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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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-3645
1 51986U 22025AG 26171.35733808 -.00000366 00000-0 -49317-5 0 9990
2 51986 53.1597 297.9584 0001072 80.8569 279.2544 15.08834090236564Epoch: 2026-06-20T08:34Z
TLE epoch observation values (Epoch: 2026-06-20T08:34:34.010Z)
Latitude
0.00002°
Longitude
-99.25641°
Altitude
540.534 km
Speed
7.593 km/s
True Right ascension
19h 51m 50s
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
21:38:14
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.757 km
Perigee altitude
539.274 km
Semi-major axis
6,918.153 km
Eccentricity
0.00011
Inclination
53.1597°
RAAN
297.9584°
Arg. of periapsis
80.8569°
True anomaly
279.24228°
Mean anomaly
279.2544°
Eccentric anomaly
279.24834°
Mean motion
3.77188 °/min
Orbital period
95.44 mins
BSTAR
-0.0000049317
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-22 11:40:11.767Z | 266.851° W | 2026-06-22 11:43:11.767Z | 324.116° NNW | 29.185° | 2026-06-22 11:46:11.767Z | 29.539° NE |
| 6 mins | 2026-06-22 16:42:11.767Z | 331.486° NNW | 2026-06-22 16:44:11.767Z | 13.331° NNE | 31.428° | 2026-06-22 16:48:11.767Z | 101.135° ESE |
| 5 mins | 2026-06-22 18:22:11.767Z | 271.138° WNW | 2026-06-22 18:24:11.767Z | 221.156° SW | 26.434° | 2026-06-22 18:27:11.767Z | 169.44° S |
| 5 mins | 2026-06-23 09:53:11.767Z | 197.027° SSW | 2026-06-23 09:55:11.767Z | 137.198° SSE | 36.76° | 2026-06-23 09:58:11.767Z | 64.492° ENE |
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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