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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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: 1 day ago
TLE from 1 day ago
0 STARLINK-3660
1 51977U 22025X 25346.44619875 -.00001393 00000-0 -69453-4 0 9993
2 51977 53.2177 50.7841 0001240 89.6985 270.4149 15.08836298208167Epoch: 2025-12-12T10:42Z
TLE epoch observation values (Epoch: 2025-12-12T10:42:31.571Z)
Latitude
-0.00007°
Longitude
168.7648°
Altitude
540.646 km
Speed
7.593 km/s
True Right ascension
03h 23m 08s
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
09:14:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.857 km
Perigee altitude
539.142 km
Semi-major axis
6,918.137 km
Eccentricity
0.00012
Inclination
53.2177°
RAAN
50.7841°
Arg. of periapsis
89.6985°
True anomaly
270.40069°
Mean anomaly
270.4149°
Eccentric anomaly
270.4078°
Mean motion
3.77189 °/min
Orbital period
95.44 mins
BSTAR
-0.000069453
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-12-13 12:36:36.802Z | 341.303° N | 2025-12-13 12:38:36.802Z | 20.887° NNE | 23.086° | 2025-12-13 12:41:36.802Z | 77.745° E |
| 6 mins | 2025-12-13 14:15:36.802Z | 299.88° NW | 2025-12-13 14:18:36.802Z | 207.015° SW | 40.754° | 2025-12-13 14:21:36.802Z | 146.235° SSE |
| 5 mins | 2025-12-14 05:47:36.802Z | 172.45° S | 2025-12-14 05:49:36.802Z | 133.05° SE | 22.656° | 2025-12-14 05:52:36.802Z | 78.265° E |
| 6 mins | 2025-12-14 07:26:36.802Z | 262.007° W | 2025-12-14 07:28:36.802Z | 311.823° NW | 35.283° | 2025-12-14 07:32:36.802Z | 39.523° NE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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