Timelapse of Falcon 9’s flight as seen from Veteran’s Park in Titusville this morning. Photo: Charles Boyer / Talk of Titusville
SpaceX launched a Falcon 9 carrying the Starlink 10-6 mission from Pad LC-39A at Kennedy Space Center aboard a Falcon 9 Rocket. Liftoff was at 01:01 AM EDT.
After a nominal ascent, around 8.5 minutes after liftoff, the first-stage booster used for the mission, tail number B1078, touched down safely on ASDS ‘A Shortfall of Gravitas’, stationed downrange in the Atlantic Ocean east of the Carolinas.
B1078 has now flown twelve successful missions, after previously launching Crew-6, O3b mPOWER, USSF-124, and now nine Starlink missions.
Falcon 9’s second-stage two burns were also right on the money, and the Starlink Group 10-6 of 23 Starlink Mini v2 satellites were placed into their intended initial orbit.
With Booster B1078 safely aboard, ‘A Shortfall of Gravitas’ will now return to Port Canaveral, where the booster will be unloaded, transported to SpaceX’s Hangar X facility at Kennedy Space Center and prepared for its next flight after inspection and refurbishment.
Starlink 10-6 rising Photo: Richard Gallagher, Florida Media Now
At 02:07 AM EDT, SpaceX confirmed deployment of tonight’s payload, marking another successful mission for the company and for Falcon 9.
Today’s payload was another 23 Starlink satellites that will join SpaceX’s constellation in low-Earth orbit. Now under their own power, the satellites will move into the final orbital positions before being commissioned and beginning operation.
Next Launch
SpaceX will launch the NG-21 ISS resupply for Northrup Grumman and NASA aboard a Falcon 9 from SLC-40 at Cape Canaveral Space Station on Saturday morning.
Date: NET August 3, 2024
Organization: SpaceX / NASA and Northrup Grumman
Mission: NG-21
Rocket: Falcon 9
Launch Site: SLC-40, Cape Canaveral Space Force Station
Launch Window: 11:28 AM – instantaneous window
Payload: Northrup Grumman Cygnus
SpaceX Falcon 9 carrying NG-20 for Northrup Grumman in January 2024 Photo: Charles Boyer / Talk of Titusvill
Keep in mind that launch dates and times change often. Launch attempts can be scrubbed anytime due to weather, technical reasons, or range conditions.
NASA’s SpaceX Crew-10 members (pictured from left to right) NASA astronaut Nichole Ayers, Roscosmos cosmonaut Kirill Peskov, NASA astronaut Anne McClain, and JAXA (Japan Aerospace Exploration Agency) astronaut Takuya Onishi. Photo: NASA
NASA announced the members of the Crew-10 mission to ISS today. They slated to fly to ISS no earlier than February of next year aboard a SpaceX Crew Dragon and Falcon 9.
NASA astronauts Commander Anne McClain and Pilot Nichole Ayers, JAXA (Japan Aerospace Exploration Agency) astronaut Mission Specialist Takuya Onishi, and Roscosmos cosmonaut Mission Specialist Kirill Peskov will join astronauts at the orbiting laboratory next year.
Anne McClain
Anne McClain Photo: NASA
This will be McClain’s second spaceflight. She was selected as an astronaut in 2013 and is a colonel in the U.S. Army. McClain earned her bachelor’s degree in Mechanical Engineering from the U.S. Military Academy at West Point, New York, and holds master’s degrees in Aerospace Engineering, International Security, and Strategic Studies.
The Spokane, Washington, native is a graduate of the U.S. Naval Test Pilot School in Patuxent River, Maryland. She has more than 2,300 flight hours in 24 rotary and fixed-wing aircraft, including more than 800 in combat, and was a member of the U.S. Women’s National Rugby Team.
On her first spaceflight, McClain spent 204 days as a flight engineer during Expeditions 58 and 59 and was the lead on two spacewalks, totaling 13 hours and 8 minutes. Since then, she has served in various roles, including branch chief and space station assistant to the chief of NASA’s Astronaut Office.
Nichole Ayers
Nichole Ayers Photo: NASA
Ayers is a major in the U.S. Air Force and the first member of NASA’s 2021 astronaut class set to fly to space. The Colorado native graduated from the Air Force Academy in Colorado Springs with a bachelor’s degree in Mathematics and a minor in Russian.
She later earned a master’s in Computational and Applied Mathematics from Rice University in Houston. Ayers served as an instructor pilot and mission commander in the T-38 ADAIR and F-22 Raptor, leading multinational and multiservice missions worldwide. She has more than 1,400 total flight hours, including more than 200 in combat.
Ayers is also a former athlete, and was a member of the academy’s varsity volleyball team.
Takuya Onishi
Takuya Onishi Photo: JAXA
The Crew 10 flight will be Onishi’s second trip to the International Space Station. After being selected by JAXA in 2009, he flew as a flight engineer for Expeditions 48 and 49 became the first Japanese astronaut to robotically capture the Cygnus spacecraft. He has spent 113 days in space. He holds a bachelor’s degree in Aeronautics and Astronautics from the University of Tokyo and was a pilot for All Nippon Airways, flying more than 3,700 flight hours in the Boeing 767.
He also constructed a new experimental environment aboard Kibo, the station’s Japanese experiment module. Since his spaceflight, Onishi became certified as a JAXA flight director, leading the team responsible for operating Kibo from JAXA Mission Control in Tsukuba, Japan.
Kirill Peskov
Kirill Peskov Photo: Roscosmos
NASA’s SpaceX Crew-10 mission also will be Peskov’s first spaceflight. Before his selection as a cosmonaut in 2018, he earned a degree in Engineering from the Ulyanovsk Civil Aviation School and was a co-pilot on the Boeing 757 and 767 aircraft for airlines Nordwind and Ikar. Assigned as a test-cosmonaut in 2020, he has additional experience in skydiving, zero-gravity training, scuba diving, and wilderness survival.
Falcon 9 late in first stage flight. Photo: Charles Boyer / Talk of Titusville
Lather, Rinse, Repeat: SpaceX plans to launch another set of twenty-three Starlink satellites, this time from Pad LC-39A at Kennedy Space Center.
The launch window is similar to last week’s Starlink 10-9 launch — it opens at 12:19 AM EDT and extends until 05:02 AM EDT the same day. Should weather or technical reasons arise and cause a delay, the company has a similar launch window Saturday, August 3.
After it completes its portion of the mission, the booster will land offshore on ASDS ‘A Shortfall Of Gravitas’, which is stationed offshore downrange on the Atlantic Ocean near the Carolinas. Since this is not a Return To Launch Site mission, no sonic booms will be heard on the Space Coast.
The launch will be SpaceX’s 76th of 2024 and its 15th launch from LC-39A this year. Overall, it will be the 386th SpaceX launch of all time.
At A Glance
Mission: Starlink 10-6
Date: NET August 2, 2024
Launch Window: 12:19 AM – 05:02 AM EDT*
Weather: 95% Go during the primary launch window
Organization: SpaceX
Rocket: Falcon 9
Trajectory: Northeastward
Launch Site: LC-39A, Kennedy Space Center
Booster Landing: Offshore on ASDS A Shortfall of Gravitas
Payload: Communications satellite to geosynchronous orbit.
Destination: Low-Earth Orbit
* consult SpaceX website for the specific target for T-0.
Payload
The payload for this mission is a familiar one: twenty-three Starlink satellites. Starlink provides low-latency, high-bandwidth Internet connectivity to its customers.
Starlink orbital rendering by FetchCFD
Weather
General Forecast
Generally speaking, the threat of the usual afternoon and evening storms have died away for the evening by midnight, and tonight is no exception.
Temperature
~81° F / 26.9°C
Humidity
~90%
Precipitation
None, Probably
Cloud cover
~1% estimated
Windspeed (at ground level)
12-14 MPH / 5.5 m/s
Visibility
~8.7 miles / 14.0 km
As shown below, the 45th’s forecast states, “Storms will meander the Space Coast area but will subside in advance of the launch windows each day leaving just lingering dissipating clouds. Additionally, during the launch windows there is a small chance for nocturnal storms to develop over the water near the coastline, especially on Saturday morning. Primary concerns for each day would be the Cumulus Cloud Rule.”
That in mind, the 45th is forecasting only a 5% Probability of Violations for weather conditions, meaning that they rate chances for acceptable conditions at 95%. They also have rated the probability of a problem at the booster landing area as “low.”
The official forecast from the 45th Weather Squadron:
45th Weather Squadron’s forecast on August 1, 2024 Retrieved 11am 08/01/2024
Trajectory
The trajectory for the Starlink 10-6 mission is a familiar path: northeastward, the customary direction for SpaceX’s Group 10 Starlink launches. The rocket right-to-left if you are on the Space Coast and facing in the direction of the Atlantic Ocean.
Landing
After completing its part of the mission, the first stage booster will land offshore on the Automated Spaceport Drone Ship ‘A Shortfall Of Gravitas.’
As such, there will be no sonic boom on the Space Coast.
SpaceX will have a livestream of the launch on their website: Starlink 10-6. This will also be available on the X platform. Coverage starts about five minutes before liftoff.
Spaceflight Now will have coverage of the launch starting about one hour before liftoff on Youtube: link
For official updates regarding launch times, SpaceX.com is the best source of information. Starlink launch times change from time to time, and the company generally updates their website within minutes of the decision to change the launch time. This is very handy if none of the streaming options on YouTube have started their broadcasts.
Remember that there is a delay between a launch stream and the actual countdown clock. That is simply because of physics: it takes time for the signal to travel from the launch site, through the Internet, and back down to your phone, resulting in a five to fifteen-second delay.
Next Space Flight an app for iOS and Android phones, has a real-time countdown clock that is accurate to a second, give or take. The app is free. Search the App Store or Google Play. They are also on the web: nextspaceflight.com.
Launch Viewing: In Person
This morning’s planned launch is from LC-39A of the Eastern Range (KSC and Cape Canaveral Space Force Station combined.) The northern parks in Titusville on Washington Avenue and FL-528/A1A in Cape Canaveral are the best spots to watch liftoff directly.
There are several excellent viewing spots for LC-39A launches that offer indirect views — meaning you won’t see the rocket until it clears obstructions such as trees, buildings, even a storm berm in one case.
Parking fees (probably). Pay with your smartphone on the parking app. There are signs everywhere telling you how.
Further away, but still good views.
Southern Titusville Parks
Further away, but really nice views.
Restaurants With Good Launch Views
Given that the launch window opens after midnight and closes before dawn, local restaurants will be closed before liftoff and will not re-open before the end of the window.
Booster: unknown
SpaceX states “This is the 12th flight for the first stage booster supporting this mission, which previously launched Crew-6, O3b mPOWER, USSF-124, and eight Starlink missions.”
That’s Booster B1078, which last flew forty days ago as part of the Starlink 10-2 mission.
Booster B1078
Flight Number
Payload
Date
1
Crew-6
March 2, 2023
2
O3b mPOWER 3 & 4
April 28, 2023
3
Starlink 6-4
June 4, 2023
4
Starlink 6-8
August 7, 2023
5
Starlink 6-16
September 16, 2023
6
Starlink 6-31
December 3, 2023
7
USSF-124
February 14, 2024
8
Starlink 6-46
March 25, 2024
9
Starlink 6-53
April 23, 2024
10
Starlink 6-60
May 28, 2024
11
Starlink 10-2
June 23, 2024
Booster B1078 as of 06/23/2024
Liftoff of a Falcon 9 as seen from Cocoa Beach. Photo: Charles Boyer / Talk of Titusville
Countdown Timeline
There are key events in the countdown that you may hear called out in launch coverage.
Remember that once Propellant Loading (T-minus thirty-eight minutes) starts, Falcon 9 is committed to the launch attempt. Because of the nature of the cryogenic fuels used to power the rockets, any hold precludes a later launch attempt the same day. While it only rarely happens, there have been occasions where that has happened, and a launch scrub is called for the day’s attempt.
SpaceX provides the following countdown milestones on their mission information page:
Hours:Minutes:Seconds
Event
00:38:00
SpaceX Launch Director verifies go for propellant load
00:35:00*
RP-1 (rocket grade kerosene) loading begins
00:35:00
1st stage LOX (liquid oxygen) loading begins
00:16:00
2nd stage LOX loading begins
00:07:00
Falcon 9 begins engine chill prior to launch
00:01:00
Command flight computer to begin final prelaunch checks
00:01:00
Propellant tank pressurization to flight pressure begins
00:00:45
SpaceX Launch Director verifies go for launch
00:00:03
Engine controller commands engine ignition sequence to start
00:00:00
Falcon 9 liftoff
* after propellant loading begins, SpaceX is committed, and any holds until liftoff results in a scrub for the day. This is important if the weather is marginal. Via SpaceX. SpaceX countdown timeline is presented for information purposes only and can be changed by the launch provider without notice.
Timeline of Falcon 9 Flight
SpaceX has published a timeline of expected events during the mission:
Hours:Minutes:Seconds
Event
00:00:00
Liftoff
00:01:10
Max-Q (Moment of peak mechanical stress on the rocket)
00:02:26
1st stage main engine cutoff (MECO)
00:02:30
1st and 2nd stages separate
00:02:36
2nd stage engine starts (SES-1)
00:02:57
Fairing deployment
00:06:05
1st stage entry burn begins
00:06:28
1st stage entry burn ends
00:07:46
1st stage landing burn begins
00:08:14
1st stage landing
00:08:39
2nd stage engine cutoff (SECO-1)
00:54:40
2nd stage engine starts (SES-2)
00:54:42
2nd stage engine cutoff (SECO-2)
01:03:34
Starlink satellites deploy
via: SpaceX. SpaceX flight timeline is presented for information purposes only and can be changed by the launch provider without notice.
All events up to the end of the 1st stage entry burn should be visible for launch spectators watching the launch in person, so long as clouds are not blocking the viewer’s line of sight.
Keep Up To Date With Space News
Keep up with launch news and other space events that affect the local area by subscribing to alerts when we publish a new article by entering your email at the link at the bottom of this page, or by visiting Space Talk here on the website. It’s free, and you can cancel at any time.
Atlas V rising Tuesday morning Photo: Ed Cordero / ERC Photos
United Launch Alliance launched an Atlas V 551 from Space Launch Complex 41 this morning carrying the USSF-51 classified national defense payload for the US Space Force. Liftoff was at 06:45 AM EDT, just as the sun was rising.
Today’s launch was the last national security payload for Atlas V, but the rocket will continue to fly until 2030 when it will loft astronauts aboard Starliner to the ISS. The next Atlas V scheduled to launch will be for Amazon’s Project Kuiper sometime in the fourth quarter of this year, carrying the first of its production satellites to orbit for the company’s planned LEO-based Internet service.
Atlas V left its tell-tale exhaust plume, brightly lit by the rising sun. Photo: Charles Boyer / Talk of Titusville
Liftoff was nominal, and the rocket soared to orbit with no apparent issues. Tory Bruno, ULA’s CEO, called the flight “Hot, straight, and normal” six minutes after liftoff, and moments later announced that Atlas V was in orbit. Presumably, pending an announcement of payload deployment, the flight was a success.
Launch Replay
Payload
Today’s payload was a classified national defense asset for the US Space Force. No other information was given.
Atlas V rising. Photo: Ed Cordero / ERC Photos
Remaining Atlas V Launches From Cape Canaveral
Despite some reports in the media, today’s flight was not the last-ever Atlas V launch from Cape Canaveral, instead, it was the final national security mission from the workhorse rocket. The last Atlas V won’t launch until 2030 if the current manifest plays out as planned:
Next Launch
SpaceX will launch another tranche of Starlink satellites overnight on Friday morning.
Date: NET August 2, 2024
Organization: SpaceX
Mission: Starlink 10-6
Rocket: Falcon 9
Launch Site: SLC-40, Cape Canaveral Space Force Station
Launch Window: 12:19 AM – 05:02 AM EDT
Payload: Starlink satellites
Atlas V lifting off. Photo: Charles Boyer / Talk of Titusville
Atlas V and USSF-51 sitting on its launch pad on July 29, 2024 Photo: Charles Boyer / Talk of Titusville
United Launch Alliance is planning to launch an Atlas V tomorrow morning from Space Launch Complex 41 at Cape Canaveral Space Force Station. The launch window opens at 06:45 AM EDT and extends to 11:45 AM the same day.
The payload for this mission is classified and is for the United States Space Force’s Space Systems Command (SSC). No other information is publicly available.
In their press materials, ULA notes that “The Atlas V USSF-51 mission on Tuesday is the 100th ULA launch dedicated to national security.” They also note that this is the last national security mission for Atlas V, and that future missions will be aboard the company’s new rocket, Vulcan.
Atlas V sitting on its launch pad on July 29, 2024 Photo: Charles Boyer / Talk of Titusville
At A Glance
Mission: USSF-51
Date: NET July 30, 2024
Launch Window: 06:45 AM – 11:45 AM EDT*
Weather: 80% Go during the primary launch window
Organization: United Launch Alliance
Rocket: Atlas V 551
Trajectory: Easterward
Launch Site: SLC-41, Cape Canaveral Space Force Station
The 45th Weather Squadron has released their weather forecast, and it’s a good one as far as launches go: only a 20% probability of violation, meaning the forecasters expect an 80% chance of acceptable weather during the launch window.
The 45th’s main concerns are, “The possibility of showers and an isolated thunderstorm near or just off the Spaceport coast in the mornings Tuesday and Wednesday. The Cumulus Cloud Rule and Anvil Cloud Rules are the concerns for the primary launch window and Cumulus Cloud Rule is the concern for the backup launch window.”
via 45th Weather Squadron Retrieved July 29, 2024
Trajectory
The rocket’s trajectory will be East-Southeast as it rises, effectively straight away from the coast if you are facing the Atlantic Ocean in Florida.
Online Viewing
United Launch Alliance will have a live feed of the launch beginning at 06:25 AM EDT
Spaceflight Now will have coverage of the launch starting about one hour before liftoff on Youtube: link
For official updates regarding launch times, ULALaunch.com is the best source of information.
Remember that there is a delay between a launch stream and the actual countdown clock. That is simply because of physics: it takes time for the signal to travel from the launch site, through the Internet, and back down to your phone, resulting in a five to fifteen-second delay.
Next Space Launch an app for iOS and Android phones, has a real-time countdown clock that is accurate to a second, give or take. The app is free. Search the App Store or Google Play.
Launch Viewing: In Person
This morning’s planned launch is from SLC-41, on the south side of the Eastern Range (KSC and Cape Canaveral Space Force Station combined.) The southern parks in Titusville on Washington Avenue and FL-528/A1A in Cape Canaveral are the best spots to watch liftoff directly.
Given the early hours of the launch window (0:645AM – 11:45AM EDT) these restaurants may not be open for launch viewing. Later in the day, all three may well be, so if you are interested, be sure to call ahead to make sure they’ll be ready to serve you.
The Space Bar ($$$) – atop the Courtyard Marriott near Kennedy Parkway
New York New York ($$) – on the Indian River with an outdoor seating area. Is family-friendly.
Shiloh’s ($$$) — located on the Indian River with an outdoor deck overlooking KSC/CCSFS
Indirect Views
There are several excellent viewing spots for SLC-41 launches that offer indirect views — meaning you won’t see the rocket until it clears obstructions such as trees, buildings, even a storm berm in one case.
Parking fees (probably). Pay with your smartphone on the parking app. There are signs everywhere telling you how.
Further away, but still good views.
Northern Titusville Parks
Further away, but really nice views.
Playalinda Beach
Playalinda Beach out on the Cape Canaveral National Seashore will be open to spectators at 6:00 AM EDT, that is if KSC Security and the National Park Service allow viewers for the launch. That’s a bit tight for a 06:45 AM launch, but this may be an option available to you. I cannot stress this enough: Call ahead to be sure.
Cape Canaveral National Seashore • Playalinda Beach Phone: (386) 428-3384 x0 Current operating hours: 6:00 AM–8:00 PM
If you are going to Playalinda, and if it is open, remember these general tips. Some may not apply to this particular launch.
Get there at least two hours early, or better, earlier than that. Lines are long at the entry gate and they will only allow as many spectator vehicles as there are parking space available.
If the launch L-0 time is moved to after 8PM, you must leave Playalinda, as the National Park Service is very strict about closing hours.
Cape Canaveral National Seashore has a fee to get in and cash is not accepted. Debit and credit cards are okay, or if you have one of the National Park Service’s passes for the Seashore or the National Parks, that will work as well.
Cellphone service is spotty at best and often non-existent at Playalinda. Don’t count on your cellphone to keep up with the launch; you might get a signal, or you might not.
You are not allowed to view from the pullouts on Beach Road. Stanchions will block them. You’ll have to park and go to the beach.
Refreshments are not available. There are no stores at Cape Canaveral National Seashore, so you’ll need to bring drinks and food if you want any while you’re there.
Rangers will keep you back a certain distance from the launch area on the beach. Even if the beach is open, you’ll still be unable to go down to the fence that demarcates the normal security zone. There’s a line that spectators can’t go past somewhat north of the fence. That’s for safety and security.
Be prepared for potential changes or pushbacks in the launch schedule, and keep up by monitoring the live stream links mentioned above.
Keep up with launch news and other space events that affect the local area by subscribing to alerts when we publish a new article by entering your email at the link at the bottom of this page, or by visiting Space Talk here on the website. It’s free, and you
Beyond the Cocoa Beach Pier, Falcon 9 rose to orbit this evening. Photo: Charles Boyer, Talk of Titusville
SpaceX launched a Falcon 9 carrying the Starlink 10-4 mission from Space Launch Complex 40 at Cape Canaveral Space Force Station. Liftoff was at 01:09 AM EDT.
After a nominal ascent, around 8.5 minutes after liftoff, the first-stage booster used for the mission, tail number B1077, touched down safely on ASDS ‘A Shortfall of Gravitas’, stationed downrange in the Atlantic Ocean east of the Carolinas. B1077 has now flown fourteen successful missions.
According to SpaceX, tonight’s mission marks the 300th time the company has re-flown a booster after its initial flight.
Falcon 9’s second-stage two burns were also right on the money, and the Starlink Group 10-4 of 23 Starlink Mini v2 satellites were placed into their intended initial orbit.
SpaceX confirmed a successful satellite deployment at 02:13 AM EDT, concluding the mission successfully.
With Booster B1077 safely aboard, ‘A Shortfall of Gravitas’ will now return to Port Canaveral, where the booster will be unloaded, transported to SpaceX’s Hangar X facility at Kennedy Space Center and prepared for its next flight after inspection and refurbishment.
Launch Replay
Payload
Today’s payload was another 23 Starlink satellites that will join SpaceX’s constellation in low-Earth orbit. Over 1,000 of these satellites have been launched this year alone. There are well over 6,000 Starlink satellites in orbit, providing Internet connectivity to the company’s customers.
Next Launch
United Launch Alliance will launch a classified payload for the US Space Force aboard an Atlas V 551 from SLC-41 at Cape Canaveral Space Station on Tuesday morning.
Date: NET June 25, 2024
Organization: NASA / SpaceX
Mission: USSF-51
Rocket: Atlas V 551
Launch Site: SLC-41, Cape Canaveral Space Force Station
Launch Window: 06:45 AM – 11:45 AM EDT
Payload: You don’t meet the criteria for need to know.
Representative Atlas V lifting off from SLC-41. Photo: Charles Boyer / Talk of Titusville
Keep in mind that launch dates and times change often. Launch attempts can be scrubbed anytime due to weather, technical reasons, or range conditions.
Typical Falcon 9 on its launch pad at Space Launch Complex 40. Photo: Charles Boyer / Talk of Titusville
Fresh on the heels of a successful Return to Flight mission of Falcon 9 this morning, SpaceX plans to launch another set of twenty-three Starlink satellites, this time from Space Launch Complex 40 at Cape Canaveral Space Force Station early Sunday morning.
The launch window is similar to this morning’s Starlink 10-9 launch as well: it opens at 12:13 AM EDT and extends until 04:43 AM EDT the same day. Should weather or technical reasons arise and cause a delay, the company has a similar launch window Monday, July 29.
After it completes its portion of the mission, the booster will land offshore on ASDS ‘A Shortfall Of Gravitas’, which is stationed offshore downrange on the Atlantic Ocean near the Carolinas. Since this is not a Return To Launch Site mission, no sonic booms will be heard on the Space Coast.
The launch will be SpaceX’s 74th of 2024 and its 35th from SLC-40 this year. Overall, it will be the 386th SpaceX launch of all time.
At A Glance
Mission: Starlink 10-4
Date: NET July 28, 2024
Launch Window: 12:13 AM – 04:43 AM EDT*
Weather: 85% Go during the primary launch window
Organization: SpaceX
Rocket: Falcon 9
Trajectory: Northeastward
Launch Site: SLC-40, Cape Canaveral Space Force Station
Booster Landing: Offshore on ASDS A Shortfall of Gravitas
Payload: Communications satellite to geosynchronous orbit.
Destination: Low-Earth Orbit
* consult SpaceX website for the specific target for T-0.
Payload
The payload for this mission is the same as this morning: twenty-three Starlink satellites. Starlink provides low-latency, high-bandwidth Interet connectivity to its customers and began serving its first users in the Autumn of 2020. Currently, there are over 6,000 active Starlink satellites in low Earth orbit, serving over three million customers in over 100 countries worldwide.
Rendering of Starlink satellites in orbit. Graphic: SpaceX
Weather
General Forecast
Once again, the weather looks good for a launch tonight, especially given the season. The 45th Weather Squadron of the US Space Force — the group that produces the official launch forecast and provides range weather services — has not ruled out the possibility of a shower or an anvil cloud entering the launch region and causing a delay.
Temperature
80° F / 26.7°C
Humidity
~80%
Precipitation
None, Probably
Cloud cover
~65%
Windspeed (at ground level)
12 MPH / 5.5 m/s
Visibillity
~10.6 miles / 17.0 km
As shown below, the 45th’s forecast states, “Models are divided on development of any late evening convection nearby, but persistence suggests there will be enough instability that a few popups can’t be ruled out even late night if outflows do move through. Anvil level flow will remain out of the north-northeast, bringing a messy mix of frontal cloudiness, convective debris, and remnant anvils across the Spaceport for both launch windows. These will present the main forecast concern, with a smaller threat for locally developing showers with any outflows. There are currently no clear trends throughout the windows as the front and mid-level trough digging into the east coast will likely keep any convection to the north going into the late evening.”
Despite these concerns the 45th is rating the chances of acceptable weather at 85% GO, with only a 15% Probability of Violation.
The official forecast from the 45th Weather Squadron:
45th Weather Squadron Starlink 10-4 Forecast issued July 27. Retrieved 11:00 AM EDT, 27 July 2024 A cumulonimbusincus — an Anvil Cloud. Photo: Wikimedia Commons
Trajectory
The trajectory for the Starlink 10-4 mission is northeastward, the customary direction for SpaceX’s Group 10 Starlink launches. The rocket right-to-left if you are on the Space Coast and facing in the direction of the Atlantic Ocean.
Landing
After completing its part of the mission, the first stage booster will land offshore on the Automated Spaceport Drone Ship ‘A Shortfall Of Gravitas.’
As such, there will be no sonic boom on the Space Coast.
SpaceX will have a livestream of the launch on their website: Starlink 10-4. This will also be available on the X platform. Coverage starts about five minutes before liftoff.
Spaceflight Now will have coverage of the launch starting about one hour before liftoff on Youtube: link
For official updates regarding launch times, SpaceX.com is the best source of information. Starlink launch times change from time to time, and the company generally updates their website within minutes of the decision to change the launch time. This is very handy if none of the streaming options on YouTube have started their broadcasts.
Remember that there is a delay between a launch stream and the actual countdown clock. That is simply because of physics: it takes time for the signal to travel from the launch site, through the Internet, and back down to your phone, resulting in a five to fifteen-second delay.
Next Space Launch an app for iOS and Android phones, has a real-time countdown clock that is accurate to a second, give or take. The app is free. Search the App Store or Google Play.
Launch Viewing: In Person
This morning’s planned launch is from SLC-40, on the south side of the Eastern Range (KSC and Cape Canaveral Space Force Station combined.) The southern parks in Titusville on Washington Avenue and FL-528/A1A in Cape Canaveral are the best spots to watch liftoff directly.
There are several excellent viewing spots for SLC-40 launches that offer indirect views — meaning you won’t see the rocket until it clears obstructions such as trees, buildings, even a storm berm in one case.
Parking fees (probably). Pay with your smartphone on the parking app. There are signs everywhere telling you how.
Further away, but still good views.
Northern Titusville Parks
Further away, but really nice views.
Restaurants With Good Launch Views
Given that the launch window opens after midnight and closes before dawn, local restaurants will be closed before liftoff and will not re-open before the end of the window.
Booster: B1077
According to SpaceX, “This is the 14th flight for the first stage booster supporting this mission, which previously launched Crew-5, GPS III Space Vehicle 06, Inmarsat I6-F2, CRS-28, Intelsat G-37, NG-20, and seven Starlink missions.” That’s Booster B1077.
SpaceXBooster B1077
Flight
Mission
Date
1
Crew-5
10/15/2023
2
GPS III SV06
01/18/2023
3
Inmarsat-6 F2
02/18/2023
4
Starlink Group 5-10
03/29/2023
5
Dragon CRS-2 SpX-28
06/05/2023
6
Galaxy 37
08/03/2023
7
Starlink Group 6-13
09/01/2023
8
Starlink Group 6-25
10/30/2023
9
Starlink Group 6-33
12/07/2023
10
Northrup Grumman NG-20
01/30/2024
11
Starlink Group 6-43
03/10/2024
12
Starlink Group 6-51
04/17/2024
13
Starlink Group 6-63
06/05/2024
Booster 1077 flight record as of June 5, 2024
SpaceX has not yet announced which Falcon 9 booster will fly tonight’s mission.
A time-lapse “launch streak” shot of a Falcon 9’s flight as seen from Cocoa Beach. While ignition and liftoff will not be directly visible, the majority of the flight will be clear to observers, clouds permitting. Photo: Charles Boyer / Talk of Titusville
Countdown Timeline
There are key events in the countdown that you may hear called out in launch coverage.
Remember that once Propellant Loading (T-minus thirty-eight minutes) starts, Falcon 9 is committed to the launch attempt. Because of the nature of the cryogenic fuels used to power the rockets, any hold precludes a later launch attempt the same day. While it only rarely happens, there have been occasions where that has happened, and a launch scrub is called for the day’s attempt.
SpaceX provides the following countdown milestones on their mission information page:
Hours:Minutes:Seconds
Event
00:38:00
SpaceX Launch Director verifies go for propellant load
00:35:00*
RP-1 (rocket grade kerosene) loading begins
00:35:00
1st stage LOX (liquid oxygen) loading begins
00:16:00
2nd stage LOX loading begins
00:07:00
Falcon 9 begins engine chill prior to launch
00:01:00
Command flight computer to begin final prelaunch checks
00:01:00
Propellant tank pressurization to flight pressure begins
00:00:45
SpaceX Launch Director verifies go for launch
00:00:03
Engine controller commands engine ignition sequence to start
00:00:00
Falcon 9 liftoff
* after propellant loading begins, SpaceX is committed, and any holds until liftoff results in a scrub for the day. This is important if the weather is marginal. Via SpaceX. SpaceX countdown timeline is presented for information purposes only and can be changed by the launch provider without notice.
Timeline of Falcon 9 Flight
SpaceX has published a timeline of expected events during the mission:
Hours:Minutes:Seconds
Event
00:00:00
Liftoff
00:01:10
Max-Q (Moment of peak mechanical stress on the rocket)
00:02:26
1st stage main engine cutoff (MECO)
00:02:30
1st and 2nd stages separate
00:02:36
2nd stage engine starts (SES-1)
00:02:57
Fairing deployment
00:06:05
1st stage entry burn begins
00:06:28
1st stage entry burn ends
00:07:46
1st stage landing burn begins
00:08:14
1st stage landing
00:08:39
2nd stage engine cutoff (SECO-1)
00:54:40
2nd stage engine starts (SES-2)
00:54:42
2nd stage engine cutoff (SECO-2)
01:03:34
Starlink satellites deploy
via: SpaceX. SpaceX flight timeline is presented for information purposes only and can be changed by the launch provider without notice.
All events up to the end of the 1st stage entry burn should be visible for launch spectators watching the launch in person, so long as clouds are not blocking the viewer’s line of sight.
Keep Up To Date With Space News
Keep up with launch news and other space events that affect the local area by subscribing to alerts when we publish a new article by entering your email at the link at the bottom of this page, or by visiting Space Talk here on the website. It’s free, and you can cancel at any time.
The Mid-Course Tracking Station keeping a watching electronic eye on Falcon 9 as it tracks the launch Saturday morning. Photo: Charles Boyer / Talk of Titusville
SpaceX launched the Starlink 10-9 mission early Saturday morning from Pad LC-39A at Kennedy Space Center aboard a Falcon 9 rocket. Liftoff was at 01:45 AM EDT, and Booster B1069 completed its 17th flight by successfully landing on the Automated Spaceport Drone Ship ‘Just Read The Instructions’ roughly 8.25 minutes after lifting off and lofting the payload towards orbit.
SpaceX announced a successful payload deployment at 02:49 AM EDT.
Falcon 9’s upper stage has completed its second engine burn to place it in the final deploy orbit
This was a Return To Flight mission after the Starlink 9-3 mishap, one that the company stated Friday was the result of “a crack in a sense line for a pressure sensor attached to the vehicle’s oxygen system.”
SpaceX devised and tested a fix quickly after identifying the root cause of the problem, allowing them to fly this morning’s mission a mere 15 days after that issue caused a rare failure in Falcon 9’s second stage. Earlier today, Sarah Walker, the Director of Dragon Mission Management at SpaceX said in a Crew 9 update that the company had removed the faulty sense line and tested the repair at the company’s engine facility in Macgregor, Texas. The fix was also successful in Falcon 9’s Return To Flight mission this morning.
Launch Replay
Payload
Twenty-three Starlink Mini V2 satellites. Once fully operational, the satellites will join the burgeoning Starlink constellation, which serves over three million customers in around one hundred countries worldwide.
A Starlink satellites being deployed in an earlier mission. Photo via SpaceX
Next Launch
SpaceX is scheduled to launch another set of Starlink satellites early on Sunday morning, this time from Space Launch Complex 40.
Date: NET July 28, 2024
Organization: SpaceX
Mission: Starlink Group 10-4
Rocket: Falcon 9
Launch Site: SLC-40, Cape Canaveral Space Force Station
Launch Window: 12:13 – 04:43 AM EDT
Payload: Starlink Mini v2 satellites
Keep in mind that launch dates and times change often. Launch attempts can be scrubbed anytime due to weather, technical reasons, or range conditions.
Keep up with launch news and other space events that affect the local area by subscribing to alerts when we publish a new article by entering your email at the link at the bottom of this page, or by visiting Space Talk here on the website. It’s free, and you can cancel at any time.
A SpaceX Falcon 9 lifts off in August of last year to start a Starlink mission from Florida. Photo: Charles Boyer / Talk of Titusville
SpaceX plans to launch a Falcon 9 carrying twenty-three Starlink satellites from Kennedy Space Center’s Pad LC-39A early Saturday morning. The launch window opens at 12:21 AM EDT on July 27 and extends until 04:21 AM the same day. If needed, the company has a backup launch window at the same time, twenty-four hours later, on July 28.
After it completes its portion of the mission, the booster will land offshore on ASDS ‘Just Read The Instructions’, which is stationed offshore.
SpaceX is targeting Saturday, July 27 for a Falcon 9 launch of 23 Starlink satellites to low-Earth orbit from Launch Complex 39A (LC-39A) at NASA’s Kennedy Space Center in Florida. Liftoff is targeted for 12:21 a.m. ET, with backup opportunities available until 4:21 a.m. ET. If needed, additional opportunities are also available on Sunday, July 28 starting at the same time.
The launch will be SpaceX’s 73rd launch of 2024, and its 14th launch from LC-39A this year. Overall, it will 384th SpaceX launch all time. This flight will be the first since the Starlink 9-3 mishap on July 11.
At A Glance
Mission: Starlink 10-9
Date: NET July 27, 2024
Launch Window: 12:21 AM – 04:21 AM EDT*
Weather: 85% Go during the primary launch window
Organization: SpaceX
Rocket: Falcon 9
Trajectory: Northeastward
Launch Site: LC-39A, Kennedy Space Center
Booster Landing: Offshore on ASDS Just Read The Instructions
Payload: Communications satellite to geosynchronous orbit.
Destination: Low-Earth Orbit
* consult SpaceX website for the specific target for T-0.
Payload
The payload for this mission is a familiar one: twenty-three Starlink satellites. Once deployed and operational, the satellites will join SpaceX’s Starlink constellation that provides Internet connectivity to over three million subscribers in over 100 countries globally.
Starlink Mini V2 satellites being deployed in orbit. Photo: SpaceX
Weather
Weather is looking good, considering that it is the Dog Days of summer in Florida, which means that inclement weather is a threat anywhere at any time.
As such, the 45th Weather Squadron states, “The western Atlantic ridge axis is north of the Spaceport with deep onshore flow continuing to drive the east coast seabreeze quickly inland each afternoon. Lingering effects from Saharan dust will keep conditions drier than normal, with lower chances for overnight coastal showers. The primary weather concern for an attempt early Saturday morning is the Cumulus Cloud Rule associated with a stray coastal shower.”
They are rating the chances of a weather-related scrub at 15% in the primary launch window, meaning there is an 85% chance of acceptable conditions during the launch window.
Trajectory
The trajectory for the Starlink 10-9 mission is northeastward, or right-to-left if you are on the Space Coast and facing in the direction of the Atlantic Ocean.
Landing
After completing its part of the mission, the first stage booster will land offshore on the Automated Spaceport Drone Ship ‘Just Read The Instructions.’
As such, there will be no sonic boom on the Space Coast.
SpaceX will have a livestream of the launch on their website: Starlink 10-9. This will also be available on the X platform. Coverage starts about five minutes before liftoff.
Spaceflight Now will have coverage of the launch starting about one hour before liftoff on Youtube: link
For official updates regarding launch times, SpaceX.com is the best source of information. Starlink launch times change from time to time, and the company generally updates their website within minutes of the decision to change the launch time. This is very handy if none of the streaming options on YouTube have started their broadcasts.
Remember that there is a delay between a launch stream and the actual countdown clock. That is simply because of physics: it takes time for the signal to travel from the launch site, through the Internet, and back down to your phone, resulting in a five to fifteen-second delay.
Next Space Launch an app for iOS and Android phones, has a real-time countdown clock that is accurate to a second, give or take. The app is free. Search the App Store or Google Play.
Launch Viewing: In Person
Late-night/early morning launches from LC-39A have somewhat limited viewing options, meaning that Playalinda Beach, the Merritt Island National Seashore, and most restaurants will be closed during the launch window.
That does not mean that good views are not available there are some excellent options, albeit from a slightly further distance than day or early evening liftoffs.
The best direct views of liftoff are the northern Titusville riverfront parks, one of the local businesses or Playalinda Beach:
If you plan to view launches, don’t forget the bug spray and possibly a flashlight to light your way to the viewing area.
Booster B1069
According to SpaceX, tonight’s booster previously launched “This is the 17th flight for the first stage booster supporting this mission, which previously launched CRS-24, Eutelsat HOTBIRD 13F, OneWeb 1, SES-18 and SES-19, and 12 Starlink missions.”
B1069’s last flight was June 8, 2024, when it launched the Starlink 10-1 mission from Space Launch Complex 40 at Cape Canaveral Space Force Station.
B1069
May 5, 2024
Flight
Mission
Launch Date
1
CRS-24
December 21, 2021
2
Starlink 4-23
August 28, 2022
3
Hotbird 13F
October 15, 2022
4
OneWeb 15
December 8, 2022
5
Starlink 5-3
February 2, 2023
6
SES 18 & 19
March 17, 2023
7
Starlink 5-6
May 4, 2023
8
Starlink 5-12
June 23, 2023
9
Starlink 6-9
August 11, 2023
10
Starlink 6-19
September 30, 2023
11
Starlink 6-28
November 18, 2023
12
Starlink 6-36
December 29, 2023
13
Starlink 6-39
February 25, 2024
14
Starlink 6-47
April 5, 2024
15
Starlink 6-57
May 6, 2024
16
Starlink 10-1
June 8, 2024
As of June 8, 2024
Booster B1069 launching the Starlink 6-57 mission in May 2024. This view was from the Banana River Bridge in Cape Canaveral. Photo: Charles Boyer / Talk of Titusville
Countdown Timeline
There are key events in the countdown that you may hear called out in launch coverage.
Remember that once Propellant Loading (T-minus thirty-eight minutes) starts, Falcon 9 is committed to the launch attempt. Because of the nature of the cryogenic fuels used to power the rockets, any hold precludes a later launch attempt the same day. While it only rarely happens, there have been occasions where that has happened, and a launch scrub is called for the day’s attempt.
SpaceX provides the following countdown milestones on their mission information page:
Hours:Minutes:Seconds
Event
00:38:00
SpaceX Launch Director verifies go for propellant load
00:35:00*
RP-1 (rocket grade kerosene) loading begins
00:35:00
1st stage LOX (liquid oxygen) loading begins
00:16:00
2nd stage LOX loading begins
00:07:00
Falcon 9 begins engine chill prior to launch
00:01:00
Command flight computer to begin final prelaunch checks
00:01:00
Propellant tank pressurization to flight pressure begins
00:00:45
SpaceX Launch Director verifies go for launch
00:00:03
Engine controller commands engine ignition sequence to start
00:00:00
Falcon 9 liftoff
* after propellant loading begins, SpaceX is committed, and any holds until liftoff results in a scrub for the day. This is important if the weather is marginal. Via SpaceX. SpaceX countdown timeline is presented for information purposes only and can be changed by the launch provider without notice.
Timeline of Falcon 9 Flight
SpaceX has published a timeline of expected events during the mission:
Hours:Minutes:Seconds
Event
00:00:00
Liftoff
00:01:10
Max-Q (Moment of peak mechanical stress on the rocket)
00:02:26
1st stage main engine cutoff (MECO)
00:02:30
1st and 2nd stages separate
00:02:36
2nd stage engine starts (SES-1)
00:02:57
Fairing deployment
00:06:05
1st stage entry burn begins
00:06:28
1st stage entry burn ends
00:07:46
1st stage landing burn begins
00:08:14
1st stage landing
00:08:39
2nd stage engine cutoff (SECO-1)
00:54:40
2nd stage engine starts (SES-2)
00:54:42
2nd stage engine cutoff (SECO-2)
01:03:34
Starlink satellites deploy
via: SpaceX. SpaceX flight timeline is presented for information purposes only and can be changed by the launch provider without notice.
All events up to the end of the 1st stage entry burn should be visible for launch spectators watching the launch in person, so long as clouds are not blocking the viewer’s line of sight.
Keep Up To Date With Space News
Keep up with launch news and other space events that affect the local area by subscribing to alerts when we publish a new article by entering your email at the link at the bottom of this page, or by visiting Space Talk here on the website. It’s free, and you can cancel at any time.
Falcon 9 launching from Pad LC-39A Photo: Charles Boyer / Talk of Titusville
SpaceX has been cleared to resume launching Falcon 9 by the FAA. Almost immediately afterward, the company announced a launch of the venerable rocket from Pad LC-39A at Kennedy Space Center early Sunday morning.
The company stated that the Starlink 9-3 mishap in a statement on their website “The cause of the leak was identified as a crack in a sense line for a pressure sensor attached to the vehicle’s oxygen system. This line cracked due to fatigue caused by high loading from engine vibration and looseness in the clamp that normally constrains the line,” SpaceX said.
In turn, “The liquid oxygen leak on the upper stage led to the excessive cooling of engine components, most importantly those associated with delivery of ignition fluid to the engine. As a result, the engine experienced a hard start rather than a controlled burn, which damaged the engine hardware and caused the upper stage to subsequently lose attitude control,” said SpaceX today.
SpaceX then outlined the fix that they will employ in the short-term future, “For near term Falcon launches, the failed sense line and sensor on the second stage engine will be removed. The sensor is not used by the flight safety system and can be covered by alternate sensors already present on the engine. The design change has been tested at SpaceX’s rocket development facility in McGregor, Texas, with enhanced qualification analysis and oversight by the FAA and involvement from the SpaceX investigation team.”
That presumes that they will be looking for a permanent fix but, in the meantime, will employ the method outlined above. It is unknown whether that will be sufficient for crewed flights — either to SpaceX, NASA, or the FAA.
FAA Statement
The FAA released the following statement:
“The FAA is responsible for and committed to protecting the public during commercial space transportation launch and reentry operations.
After a comprehensive review, the FAA determined no public safety issues were involved in the anomaly that occurred during the SpaceX Starlink Group 9-3 launch on July 11. The public safety determination means the Falcon 9 vehicle may return to flight operations while the overall investigation remains open, provided all other license requirements are met.”
SpaceX submitted its mishap report to the Federal Aviation Administration (FAA) regarding Falcon 9’s launch anomaly on July 11, 2024. SpaceX’s investigation team, with oversight from the FAA, was able to identify the most probable cause of the mishap and associated corrective actions to ensure the success of future missions.
Post-flight data reviews confirmed Falcon 9’s first stage booster performed nominally through ascent, stage separation, and a successful droneship landing. During the first burn of Falcon 9’s second stage engine, a liquid oxygen leak developed within the insulation around the upper stage engine. The cause of the leak was identified as a crack in a sense line for a pressure sensor attached to the vehicle’s oxygen system. This line cracked due to fatigue caused by high loading from engine vibration and looseness in the clamp that normally constrains the line. Despite the leak, the second stage engine continued to operate through the duration of its first burn, and completed its engine shutdown, where it entered the coast phase of the mission in the intended elliptical parking orbit.
A second burn of the upper stage engine was planned to circularize the orbit ahead of satellite deployment. However, the liquid oxygen leak on the upper stage led to the excessive cooling of engine components, most importantly those associated with delivery of ignition fluid to the engine. As a result, the engine experienced a hard start rather than a controlled burn, which damaged the engine hardware and caused the upper stage to subsequently lose attitude control. Even so, the second stage continued to operate as designed, deploying the Starlink satellites and successfully completing stage passivation, a process of venting down stored energy on the stage, which occurs at the conclusion of every Falcon mission.
Following deployment, the Starlink team made contact with 10 of the satellites to send early burn commands in an attempt to raise their altitude. Unfortunately, the satellites were in an enormously high-drag environment with a very low perigee of only 135 km above the Earth. As a result, all 20 Starlink satellites from this launch re-entered the Earth’s atmosphere. By design, Starlink satellites fully demise upon reentry, posing no threat to public safety. To-date, no debris has been reported after the successful deorbit of Starlink satellites.
SpaceX engineering teams have performed a comprehensive and thorough review of all SpaceX vehicles and ground systems to ensure we are putting our best foot forward as we return to flight. For near term Falcon launches, the failed sense line and sensor on the second stage engine will be removed. The sensor is not used by the flight safety system and can be covered by alternate sensors already present on the engine. The design change has been tested at SpaceX’s rocket development facility in McGregor, Texas, with enhanced qualification analysis and oversight by the FAA and involvement from the SpaceX investigation team. An additional qualification review, inspection, and scrub of all sense lines and clamps on the active booster fleet led to a proactive replacement in select locations.
Safety and reliability are at the core of SpaceX’s operations. It would not have been possible to achieve our current cadence without this focus, and thanks to the pace we’ve been able to launch, we’re able to gather unprecedented levels of flight data and are poised to rapidly return to flight, safely and with increased reliability. Our missions are of critical importance – safely carrying astronauts, customer payloads, and thousands of Starlink satellites to orbit – and they rely on the Falcon family of rockets being one of the most reliable in the world. We thank the FAA and our customers for their ongoing work and support.
Falcon 9 nears staging Photo: Charles Boyer / Talk of Titusville
Starlink 10-9 Launch Scheduled
Also on SpaceX’s website, a Falcon 9 launch was announced:
SpaceX is targeting Saturday, July 27 for a Falcon 9 launch of 23 Starlink satellites to low-Earth orbit from Launch Complex 39A (LC-39A) at NASA’s Kennedy Space Center in Florida. Liftoff is targeted for 12:21 a.m. ET, with backup opportunities available until 4:21 a.m. ET. If needed, additional opportunities are also available on Sunday, July 28 starting at the same time.
Talk of Titusville will publish a comprehensive launch preview tomorrow, Friday 26.
You must be logged in to post a comment.