STARLINK-3657, 51990
Orbit data source: Space-Track
STARLINK-3657, 51990 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 09 Mar 2022 UTC via an FALCON 9 launch vehicle from the Air Force Eastern Test Range (AFETR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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51990 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
297 kg wet, ~275 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 10.1 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 9 hours ago
TLE from 9 hours ago
0 STARLINK-3657
1 51990U 22025AL 25346.90524833 .00001286 00000-0 98885-4 0 9998
2 51990 53.2184 48.7130 0001359 74.5239 285.5903 15.08843315208235Epoch: 2025-12-12T21:43Z
TLE epoch observation values (Epoch: 2025-12-12T21:43:33.455Z)
Latitude
-0.00005°
Longitude
0.9834°
Altitude
540.378 km
Speed
7.594 km/s
True Right ascension
03h 14m 51s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
05:22:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.918 km
Perigee altitude
539.038 km
Semi-major axis
6,918.115 km
Eccentricity
0.00014
Inclination
53.2184°
RAAN
48.713°
Arg. of periapsis
74.5239°
True anomaly
285.5753°
Mean anomaly
285.5903°
Eccentric anomaly
285.5828°
Mean motion
3.77191 °/min
Orbital period
95.44 mins
BSTAR
0.000098885
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Other satellites on launch #25 in the year 2022 (2022-03-09 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.STARLINK-3657 Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-12-13 07:27:03.118Z | 240.35° WSW | 2025-12-13 07:31:03.118Z | 1.317° NNE | 40.815° | 2025-12-13 07:34:03.118Z | 43.912° NE |
| 4 mins | 2025-12-13 09:09:03.118Z | 314.189° NW | 2025-12-13 09:11:03.118Z | 350.709° N | 16.698° | 2025-12-13 09:13:03.118Z | 21.869° NNE |
| 5 mins | 2025-12-13 12:30:03.118Z | 348.271° N | 2025-12-13 12:32:03.118Z | 30.405° NE | 21.619° | 2025-12-13 12:35:03.118Z | 78.832° E |
| 6 mins | 2025-12-13 14:09:03.118Z | 302.21° NW | 2025-12-13 14:11:03.118Z | 266.452° W | 41.833° | 2025-12-13 14:15:03.118Z | 140.18° SSE |
| 4 mins | 2025-12-14 05:41:03.118Z | 163.365° S | 2025-12-14 05:43:03.118Z | 123.937° SE | 20.092° | 2025-12-14 05:45:03.118Z | 87.84° E |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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