STARLINK-3660, 51977
Orbit data source: Space-Track
STARLINK-3660, 51977 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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51977 intel report (Beta)
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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: 2 days ago
TLE from 2 days ago
0 STARLINK-3660
1 51977U 22025X 26171.29023772 .00000328 00000-0 38700-4 0 9994
2 51977 53.1599 278.4222 0001091 60.0538 300.0562 15.08827575236828Epoch: 2026-06-20T06:57Z
TLE epoch observation values (Epoch: 2026-06-20T06:57:56.539Z)
Latitude
0.00003°
Longitude
-94.57034°
Altitude
540.295 km
Speed
7.594 km/s
True Right ascension
18h 33m 41s
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
21:49:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.79 km
Perigee altitude
539.281 km
Semi-major axis
6,918.173 km
Eccentricity
0.00011
Inclination
53.1599°
RAAN
278.4222°
Arg. of periapsis
60.0538°
True anomaly
300.04538°
Mean anomaly
300.0562°
Eccentric anomaly
300.05079°
Mean motion
3.77186 °/min
Orbital period
95.44 mins
BSTAR
0.0000387
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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-3660 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-06-22 11:43:41.709Z | 309.43° NW | 2026-06-22 11:45:41.709Z | 339.531° N | 14.783° | 2026-06-22 11:47:41.709Z | 12.881° NNE |
| 6 mins | 2026-06-22 15:04:41.709Z | 335.592° NNW | 2026-06-22 15:07:41.709Z | 43.067° NE | 25.98° | 2026-06-22 15:10:41.709Z | 90.727° ESE |
| 5 mins | 2026-06-22 16:44:41.709Z | 284.609° WNW | 2026-06-22 16:46:41.709Z | 223.92° SW | 35.177° | 2026-06-22 16:49:41.709Z | 157.574° S |
| 5 mins | 2026-06-23 08:15:41.709Z | 183.312° SSW | 2026-06-23 08:17:41.709Z | 139.981° SSE | 27.914° | 2026-06-23 08:20:41.709Z | 74.644° E |
| 6 mins | 2026-06-23 09:54:41.709Z | 268.56° W | 2026-06-23 09:57:41.709Z | 344.921° N | 30.467° | 2026-06-23 10:00:41.709Z | 35.499° NE |
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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