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SpaceXFalcon 9 Block 5Space Launch Complex 4E, Vandenberg SFB, CA, USA

Starlink Group 11-18

Launched

May 31, 2025 · 20:10 UTC

Launch Successful
Space X Starlink Mission Patch

Image: SpaceX

Summary

Starlink Group 11-18 launched on a SpaceX Falcon 9 Block 5 from Space Launch Complex 4E, Vandenberg SFB, CA, USA on May 31, 2025 at 20:10 UTC. The launch window ran from 20:10 to 23:51 UTC. It was SpaceX's 518th launch, 69th this year and humanity's 6,970th orbital launch attempt. It was the 427th Falcon 9 Block 5 flight and the 66th this year. Booster B1071 flew for the 25th time and landed at Of Course I Still Love You. The payload was bound for low Earth orbit (LEO). Starlink 33966, one of 27 catalogued objects, reached a 272 × 283 km orbit inclined 53.2°. 27 objects from this launch are catalogued, all of them payloads.

Watch
Vehicle
Falcon 9 Block 5 · SpaceXStarlink
Booster
  • B1071 · flight 25 · Autonomous Spaceport Drone Ship at Of Course I Still Love You · landed209/217 landed here · 49 days after its previous flight, NROL-192 · 574 km downrange
Mission
Communications · Low Earth Orbit (LEO)for SpX
Milestone
427th Falcon 9 Block 5 flight · 66th this yearSpaceX's 518th launch69th this yearhumanity's 6,970th orbital launch attempt121st orbital launch attempt this year

Flight preview

Simulate in Flight Club

Orbit: as tracked

53.2°Inclination
272 × 283 kmPerigee × apogeefrom mean elements
89.9 minPeriodfrom mean elements
279.2°Ascending node
502 d agoElement epoch2025-06-01 09:51 UTC · stale

Starlink 33966 · NORAD 64203 · 2025-117 · Space-Track · tracking 1 of 27 objects

Show the numbers for orbit elements
Object
STARLINK-33966
Object ID
2025-117A
Epoch
2025-06-01 09:51:42 UTC
Mean motion
16.01590748 rev/day
Eccentricity
0.0008234
Inclination
53.1603°
Ascending node
279.2344°
Arg. of perigee
244.9482°
Mean anomaly
284.5882°
Element set
999
Rev at epoch
130
B*
0.0026861

Perigee, apogee and period are Kepler figures from the catalogued mean elements, not a propagated state. Published orbit: LEO.

Flight timeline

23 steps, T−38 min to T+59 min 51 s
  1. T−38MGO for Prop Load
  2. T−35MProp Load
  3. T−35MStage 1 LOX Load
  4. T−16MStage 2 LOX Load
  5. T−7MEngine Chill
  6. T−1MStartup
  7. T−1MTank Press
  8. T−45SGO for Launch
  9. T−3SIgnition
  10. T−0Liftoff
  11. T+1M7SMax-Q
  12. T+2M25SMECO
  13. T+2M28SStage 2 Separation
  14. T+2M36SSES-1
  15. T+2M56SFairing Separation
  16. T+6M2SEntry Burn Startup
  17. T+6M28SEntry Burn Shutdown
  18. T+7M48SStage 1 Landing Burn
  19. T+8M11SStage 1 Landing
  20. T+8M40SSECO-1
  21. T+52M57SSES-2
  22. T+52M59SSECO-2
  23. T+59M51SStarlink Deployment

Catalogued objects

27 catalogued: 27 payloads; 27 still in orbit

  • Starlink 33966 · NORAD 64203 · in orbit
  • Starlink 34331 · NORAD 64204 · in orbit
  • Starlink 34251 · NORAD 64205 · in orbit
  • Starlink 34311 · NORAD 64206 · in orbit
  • Starlink 34324 · NORAD 64207 · in orbit
  • Starlink 34327 · NORAD 64208 · in orbit
  • Starlink 33944 · NORAD 64209 · in orbit
  • Starlink 34310 · NORAD 64210 · in orbit
  • Starlink 34258 · NORAD 64211 · in orbit
  • Starlink 34284 · NORAD 64212 · in orbit
  • Starlink 34332 · NORAD 64213 · in orbit
  • Starlink 34283 · NORAD 64214 · in orbit
Show 15 more payloads
  • Starlink 34349 · NORAD 64215 · in orbit
  • Starlink 34296 · NORAD 64216 · in orbit
  • Starlink 34320 · NORAD 64217 · in orbit
  • Starlink 34300 · NORAD 64218 · in orbit
  • Starlink 34323 · NORAD 64219 · in orbit
  • Starlink 34328 · NORAD 64220 · in orbit
  • Starlink 34326 · NORAD 64221 · in orbit
  • Starlink 34318 · NORAD 64222 · in orbit
  • Starlink 34337 · NORAD 64223 · in orbit
  • Starlink 34304 · NORAD 64224 · in orbit
  • Starlink 34289 · NORAD 64225 · in orbit
  • Starlink 34347 · NORAD 64226 · in orbit
  • Starlink 34330 · NORAD 64227 · in orbit
  • Starlink 34167 · NORAD 64228 · in orbit
  • Starlink 34241 · NORAD 64229 · in orbit

Data from J. McDowell, planet4589.org

About this launch

A batch of 27 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.

Official page: SpaceX

Pad

Map of Space Launch Complex 4E

Space Launch Complex 4E, Vandenberg SFB, CA, USA

196th launch from Space Launch Complex 4E, 22nd this year · 810th from Vandenberg SFB, CA, USA

Local pad time at liftoff: May 31, 1:10 PM PDT, in daylight

303 launches from this pad · 919 from Vandenberg SFB, CA, USA

4 days 3 hours after the previous launch from this pad

All launches from Vandenberg SFB, CA, USAOpen in maps

Updates

Launch success.

Cosmic_Penguin · May 31, 2025 · source

Show 5 earlier updates

  • Liftoff!

    hitura-nobad · 5/31/2025 · source

  • Unofficial Re-stream by SPACE AFFAIRS has started

    LL2 · 5/31/2025 · source

  • GO for launch.

    Cosmic_Penguin · 5/31/2025 · source

  • Now targeting May 31 at 20:01 UTC

    hitura-nobad · 5/29/2025 · source

  • Added launch.

    Cosmic_Penguin · 5/20/2025 · source

Questions

When did Starlink Group 11-18 launch?

Starlink Group 11-18 launched on May 31, 2025 at 20:10 UTC. The launch window ran from 20:10 to 23:51 UTC.

Where can I watch Starlink Group 11-18?

Coverage: SpaceX Starlink Group 11-18; SpaceX - Falcon 9 - Starlink 11-18 - SLC-4E - Vandenberg SFB - May 31, 2025; Watch live: Falcon 9 rocket launches SpaceX Starlink satellites from California. Watch the replay

What rocket launched Starlink Group 11-18?

Falcon 9 Block 5, flown by SpaceX. Falcon 9 Block 5 spec sheet

Where did Starlink Group 11-18 launch from?

Space Launch Complex 4E, Vandenberg SFB, CA, USA. Liftoff was May 31, 1:10 PM PDT local time at the pad.

Did the booster land?

Booster B1071 flew for the 25th time and landed at Of Course I Still Love You.

What orbit did Starlink Group 11-18 reach?

Starlink 33966, one of 27 catalogued objects, reached a 272 × 283 km orbit inclined 53.2°.

How many satellites did Starlink Group 11-18 launch?

27 payloads from this launch are catalogued, 27 of them still in orbit (Data from J. McDowell, planet4589.org).

Which program is Starlink Group 11-18 part of?

Starlink. About Starlink