SpaceXFalcon 9 Block 5Space Launch Complex 40, Cape Canaveral SFS, FL, USA
Starlink Group 12-23
Launched
April 28, 2025 · 02:09 UTC
Image: SpaceX
Summary
Starlink Group 12-23 launched on a SpaceX Falcon 9 Block 5 from Space Launch Complex 40, Cape Canaveral SFS, FL, USA on April 28, 2025 at 02:09 UTC. The launch window ran from 02:09 to 05:49 UTC. It was SpaceX's 499th launch, 50th this year and humanity's 6,936th orbital launch attempt. It was the 409th Falcon 9 Block 5 flight and the 48th this year. Booster B1077 flew for the 20th time and landed at Just Read the Instructions. The payload was bound for low Earth orbit (LEO). The tracked orbit of Starlink 11651, one of 23 catalogued objects, from May 5, 2025, was 319 × 322 km inclined 43.0°. 23 objects from this launch are catalogued, all of them payloads.
- Watch
- Vehicle
- Falcon 9 Block 5 · SpaceXStarlink
- Booster
- B1077 · flight 20 · Autonomous Spaceport Drone Ship at Just Read the Instructions · landed156/157 landed here · 40 days after its previous flight, Starlink Group 12-25 · 600 km downrange
- Mission
- Communications · Low Earth Orbit (LEO)for SpX
- Milestone
- 409th Falcon 9 Block 5 flight · 48th this yearSpaceX's 499th launch50th this yearhumanity's 6,936th orbital launch attempt87th orbital launch attempt this year
Flight preview
Simulate in Flight ClubOrbit: as tracked
Starlink 11651 · NORAD 63664 · 2025-085 · Space-Track · tracking 1 of 23 objects
Show the numbers for orbit elements
- Object
- STARLINK-11651
- Object ID
- 2025-085A
- Epoch
- 2025-05-05 18:00:02 UTC
- Mean motion
- 15.86082657 rev/day
- Eccentricity
- 0.0001734
- Inclination
- 43.0074°
- Ascending node
- 338.4019°
- Arg. of perigee
- 258.1529°
- Mean anomaly
- 273.1186°
- Element set
- 999
- Rev at epoch
- 177
- B*
- -0.004523
Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO.
Flight timeline
- T−38MGO for Prop Load
- T−35MStage 1 LOX Load
- T−35MProp Load
- T−16MStage 2 LOX Load
- T−7MEngine Chill
- T−1MStartup
- T−1MTank Press
- T−45SGO for Launch
- T−3SIgnition
- T−0Liftoff
- T+1M11SMax-Q
- T+2M25SMECO
- T+2M29SStage 2 Separation
- T+2M36SSES-1
- T+3M5SFairing Separation
- T+6M2SEntry Burn Startup
- T+6M27SEntry Burn Shutdown
- T+7M42SStage 1 Landing Burn
- T+8M12SStage 1 Landing
- T+8M39SSECO-1
- T+54M2SSES-2
- T+54M4SSECO-2
- T+1H5M11SStarlink Deployment
Catalogued objects
23 catalogued: 23 payloads; 21 still in orbit
- Starlink 11651 · NORAD 63664 · in orbit
- Starlink 11672 · NORAD 63665 · in orbit
- Starlink 11664 · NORAD 63666 · re-entered May 26, 2026
- Starlink 11666 · NORAD 63667 · in orbit
- Starlink 11663 · NORAD 63668 · in orbit
- Starlink 11595 · NORAD 63669 · in orbit
- Starlink 11599 · NORAD 63670 · in orbit
- Starlink 11603 · NORAD 63671 · in orbit
- Starlink 11644 · NORAD 63672 · in orbit
- Starlink 11634 · NORAD 63673 · in orbit
- Starlink 11656 · NORAD 63674 · in orbit
- Starlink 11655 · NORAD 63675 · in orbit
Show 11 more payloads
- Starlink 11661 · NORAD 63676 · in orbit
- Starlink 33816 · NORAD 63677 · in orbit
- Starlink 33861 · NORAD 63678 · in orbit
- Starlink 33850 · NORAD 63679 · in orbit
- Starlink 33887 · NORAD 63680 · in orbit
- Starlink 33886 · NORAD 63681 · in orbit
- Starlink 33840 · NORAD 63682 · in orbit
- Starlink 33851 · NORAD 63683 · re-entered April 30, 2026
- Starlink 33853 · NORAD 63684 · in orbit
- Starlink 33847 · NORAD 63685 · in orbit
- Starlink 33880 · NORAD 63686 · in orbit
Data from J. McDowell, planet4589.org
About this launch
A batch of 23 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.
Pad
Space Launch Complex 40, Cape Canaveral SFS, FL, USA
303rd launch from Space Launch Complex 40, 23rd this year · 1,018th from Cape Canaveral SFS, FL, USA
Local pad time at liftoff: Apr 27, 10:09 PM EDT, at night
403 launches from this pad · 1,131 from Cape Canaveral SFS, FL, USA
3 days after the previous launch from this pad
Updates
Launch success.
Show 7 earlier updates
Unofficial Re-stream by SPACE AFFAIRS has started
LL2 · 4/28/2025 · source
Liftoff
SwGustav · 4/28/2025 · source
New T-0.
Cosmic_Penguin · 4/27/2025 · source
Weather 90% GO.
hitura-nobad · 4/27/2025 · source
GO for launch.
Cosmic_Penguin · 4/26/2025 · source
Changed launch pad.
Cosmic_Penguin · 4/21/2025 · source
Added launch.
Cosmic_Penguin · 4/21/2025 · source
Questions
When did Starlink Group 12-23 launch?
Starlink Group 12-23 launched on April 28, 2025 at 02:09 UTC. The launch window ran from 02:09 to 05:49 UTC.
Where can I watch Starlink Group 12-23?
Coverage: SpaceX Starlink Group 12-23; SpaceX - Falcon 9 - Starlink 12-23 - SLC-40 - Cape Canaveral SFS - April 27, 2024; Watch live: SpaceX launches 23 Starlink satellites from Cape Canaveral on Falcon 9 rocket. Watch the replay
What rocket launched Starlink Group 12-23?
Falcon 9 Block 5, flown by SpaceX. Falcon 9 Block 5 spec sheet
Where did Starlink Group 12-23 launch from?
Space Launch Complex 40, Cape Canaveral SFS, FL, USA. Liftoff was Apr 27, 10:09 PM EDT local time at the pad.
Did the booster land?
Booster B1077 flew for the 20th time and landed at Just Read the Instructions.
What orbit did Starlink Group 12-23 reach?
The tracked orbit of Starlink 11651, one of 23 catalogued objects, from May 5, 2025, was 319 × 322 km inclined 43.0°.
How many satellites did Starlink Group 12-23 launch?
23 payloads from this launch are catalogued, 21 of them still in orbit (Data from J. McDowell, planet4589.org).
Which program is Starlink Group 12-23 part of?
Starlink. About Starlink