Starlink Group 12-21
Falcon 9 Block 5
SpaceX
Rocket Launch Videos
Weather Forecast During Launch
According to weather officials, there's a 99% chance of favorable weather conditions at the time of the launch. The forecast calls for a temperature of 67°F, clear skies, 0% cloud cover and a wind speed of 13mph.
Trajectory
View comprehensive details including the rocket's trajectory, velocity, altitude, thrust, and more at FlightClub.io.
Rocket Launch Timeline
Enhance your rocket launch experience with a detailed timeline! From pre-launch preparations to post-launch milestones, a well-structured schedule ensures every step—payload prep, safety checks, and liftoff—runs smoothly. Stay informed and follow the action with precision.
| T- 00 : 38 : 00 | GO for Prop Load Launch director verifies go for propellant load |
| T- 00 : 35 : 00 | Stage 1 LOX Load Start of liquid oxygen loading in the first stage |
| T- 00 : 35 : 00 | Prop Load Start of propelland loading |
| T- 00 : 16 : 00 | Stage 2 LOX Load Start of liquid oxygen loading in the second stage |
| T- 00 : 07 : 00 | Engine Chill Start of engine chilling |
| T- 00 : 01 : 00 | Tank Press Fuel tanks are pressurized to flight levels |
| T- 00 : 01 : 00 | Startup The onboard computer takes control over the countdown and runs last checks |
| T- 00 : 00 : 45 | GO for Launch Launch director verifies go for launch |
| T- 00 : 00 : 03 | Ignition Start of the engine ignition sequence |
| T+ 00 : 00 : 00 | Liftoff First upwards movement of the rocket |
| T+ 00 : 01 : 13 | Max-Q Maximum dynamic pressure |
| T+ 00 : 02 : 27 | MECO Cut-off of the main engine |
| T+ 00 : 02 : 31 | Stage 2 Separation Separation of the second stage from the first |
| T+ 00 : 02 : 38 | SES-1 First start of the second engine |
| T+ 00 : 03 : 00 | Fairing Separation Separation of the payload fairing |
| T+ 00 : 06 : 20 | Entry Burn Startup Start of the atmospheric entry burn |
| T+ 00 : 06 : 42 | Entry Burn Shutdown End of the atmospheric entry burn |
| T+ 00 : 08 : 01 | Stage 1 Landing Burn Start of the first stage landing burn |
| T+ 00 : 08 : 25 | Stage 1 Landing Landing of the first stage |
| T+ 00 : 08 : 40 | SECO-1 First cut-off of the second engine |
| T+ 00 : 53 : 58 | SES-2 Second start of the second engine |
| T+ 00 : 54 : 00 | SECO-2 Second cut-off of the second engine |
| T+ 01 : 05 : 07 | Starlink Deployment Deployment of the Starlink stack from the rocket |
Mission
Starlink Group 12-21
- Type: Communications
- Orbit: Low Earth Orbit
- Launch Cost: $52,000,000
Learn more about the Starlink mission
A batch of 21 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Location
Space Launch Complex 40
Cape Canaveral SFS, FL, USA
Find the best place to watch the launch from Florida
Space Launch Complex 40 has witnessed the launch of 296 rockets, including 296 orbital launch attempts. While Cape Canaveral SFS, FL, USA, has been the site for 1011 rocket launches.
Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
Rocket
SpaceX Falcon 9 Block 5
Falcon 9 is a two-stage rocket designed and manufactured by SpaceX for the reliable and safe transport of satellites and the Dragon spacecraft into orbit. The Block 5 variant is the fifth major interval aimed at improving upon the ability for rapid reusability.
Landing
Core B1069
The Falcon 9 1st stage B1069 has landed on ASDS ASOG after its 22nd flight. Booster B1069 last launched 03/13/2025 and has seen 22 successful launches and landings. Falcon 9 Block 5 booster first used for the CRS-24 mission.
A Shortfall of Gravitas - ASOG
The fourth ASDS barge, A Shortfall of Gravitas (ASOG) is currently used to recover Falcon 9 and Heavy boosters in the Altantic Ocean.
Autonomous Spaceport Drone Ship - ASDS
An autonomous spaceport drone ship (ASDS) is an ocean-going vessel derived from a deck barge, outfitted with station-keeping engines and a large landing platform. Construction of such ships was commissioned by aerospace company SpaceX to allow for recovery of rocket first-stages at sea for high-velocity missions which do not carry enough fuel to return to the launch site after lofting spacecraft onto an orbital trajectory.
Agency
SpaceX
Space Exploration Technologies Corp., known as SpaceX, is an American aerospace manufacturer and space transport services company headquartered in Hawthorne, California. It was founded in 2002 by entrepreneur Elon Musk with the goal of reducing space transportation costs and enabling the colonization of Mars. SpaceX operates from many pads, on the East Coast of the US they operate from SLC-40 at Cape Canaveral Space Force Station and historic LC-39A at Kennedy Space Center. They also operate from SLC-4E at Vandenberg Space Force Base, California, usually for polar launches. Another launch site is being developed at Boca Chica, Texas.
Can’t wait to see!!
God bless
Thank you for all you do!!
CONNECTIVITY IS A WONDERFUL THING ….GO SPACEX.!
Been chasin’ this one for a bit lol. Hope tonight’s the night!
Will there be a sonic boom with this launch?
Not likely, this article gives more information on when a sonic boom may occur: Understanding Sonic Booms
at last …… after several launch eternity cancellations ….. another second stage that is seen with the naked eye from my town …. north coast of eastern Cuba. Holguin Province. An orange comet, small but very clearly. stop seeing it on the horizon, in the east a few seconds before… Read more »