STARLINK-3645, 51986
Orbit data source: Space-Track
STARLINK-3645, 51986 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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51986 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: 19 hours ago
TLE from 19 hours ago
0 STARLINK-3645
1 51986U 22025AG 25346.64578405 -.00001226 00000-0 -58948-4 0 9990
2 51986 53.2180 69.7207 0001387 96.8673 263.2477 15.08832997207922Epoch: 2025-12-12T15:29Z
TLE epoch observation values (Epoch: 2025-12-12T15:29:55.741Z)
Latitude
-0.00004°
Longitude
115.65399°
Altitude
540.775 km
Speed
7.593 km/s
True Right ascension
04h 38m 52s
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
09:16:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.969 km
Perigee altitude
539.05 km
Semi-major axis
6,918.147 km
Eccentricity
0.00014
Inclination
53.218°
RAAN
69.7207°
Arg. of periapsis
96.8673°
True anomaly
263.23192°
Mean anomaly
263.2477°
Eccentric anomaly
263.23981°
Mean motion
3.77189 °/min
Orbital period
95.44 mins
BSTAR
-0.000058948
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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-3645 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 | 2025-12-13 10:52:55.886Z | 311.988° NW | 2025-12-13 10:54:55.886Z | 341.857° N | 14.242° | 2025-12-13 10:56:55.886Z | 14.305° NNE |
| 6 mins | 2025-12-13 14:13:55.886Z | 335.88° NNW | 2025-12-13 14:15:55.886Z | 16.748° NNE | 27.495° | 2025-12-13 14:19:55.886Z | 94.084° ESE |
| 5 mins | 2025-12-13 15:53:55.886Z | 279.305° WNW | 2025-12-13 15:55:55.886Z | 218.871° SW | 32.588° | 2025-12-13 15:58:55.886Z | 160.548° S |
| 5 mins | 2025-12-14 07:24:55.886Z | 185.899° SSW | 2025-12-14 07:26:55.886Z | 136.447° SSE | 30.698° | 2025-12-14 07:29:55.886Z | 70.747° E |
| 6 mins | 2025-12-14 09:03:55.886Z | 273.268° WNW | 2025-12-14 09:05:55.886Z | 314.278° NW | 28.649° | 2025-12-14 09:09:55.886Z | 34.963° 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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