STARLINK-5551
NORAD 56359· COSPAR 2023-058AU· Starlink· SSO
Launch
Launched on Apr 27, 2023 from Space Launch Complex 4E, United States of America aboard a Falcon 9 Block 5.
Falcon 9 Block 5 | Starlink Group 3-5 →
Live · TLE epoch 2026-09-08 13:04 UTC
Orbit class
SSO — Sun-Synchronous (LEO at 96–102° inclination)
Operator
SpaceX
Country
United States
Manufacturer
SpaceX
Launched
Apr 27, 2023
Mass
—
Apogee
555 km
Perigee
552 km
Inclination
97.28°
Period
1.59 h
Part of the Starlink constellation · this satellite is one of 10,866 (planned: 42,000)
SpaceX broadband mega-constellation in LEO. Currently the largest constellation ever flown.
Altitude history
Apogee and perigee for STARLINK-5551 across 103 days of archived orbital elements (105 element sets, one per day).
Trend
Stable
Change
-0.0 km
Rate
-0.00 km/day
Now
552 × 555 km
Apogee Perigee
Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.
Launched with
44 other catalogued objects still in orbit from launch 2023-058 (Falcon 9 Block 5 | Starlink Group 3-5).
- STARLINK-6038 · 56317
- STARLINK-5543 · 56341
- STARLINK-5955 · 56342
- STARLINK-5976 · 56343
- STARLINK-5974 · 56344
- STARLINK-5979 · 56345
- STARLINK-5837 · 56346
- STARLINK-5829 · 56347
- STARLINK-5888 · 56348
- STARLINK-5887 · 56349
- STARLINK-5886 · 56350
- STARLINK-5891 · 56351
- STARLINK-5885 · 56352
- STARLINK-5874 · 56353
- STARLINK-5877 · 56354
- STARLINK-5533 · 56355
- STARLINK-5535 · 56356
- STARLINK-5538 · 56357
- STARLINK-5482 · 56358
- STARLINK-5549 · 56360
- STARLINK-5550 · 56361
- STARLINK-5972 · 56362
- STARLINK-5954 · 56318
- STARLINK-6039 · 56319
…and 20 more from this launch.
Sources & further reading
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