STARLINK-1231, 45212
Orbit data source: Space-Track
STARLINK-1231, 45212 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Mon, 17 Feb 2020 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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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Partially operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
260 kg wet, ~248 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-1231
1 45212U 20012AL 25352.50141499 .00011793 00000-0 63252-3 0 9991
2 45212 53.0508 26.8996 0002118 176.3741 183.7267 15.15382536322895Epoch: 2025-12-18T12:02Z
TLE epoch observation values (Epoch: 2025-12-18T12:02:02.255Z)
Latitude
-0.00005°
Longitude
119.03415°
Altitude
522.158 km
Speed
7.603 km/s
True Right ascension
01h 47m 35s
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
14:19:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
521.551 km
Perigee altitude
518.629 km
Semi-major axis
6,898.227 km
Eccentricity
0.00021
Inclination
53.0508°
RAAN
26.8996°
Arg. of periapsis
176.3741°
True anomaly
183.72512°
Mean anomaly
183.7267°
Eccentric anomaly
183.72591°
Mean motion
3.78824 °/min
Orbital period
95.03 mins
BSTAR
0.00063252
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Other satellites on launch #12 in the year 2020 (2020-02-17 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-1231 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 | 2025-12-20 03:45:49.928Z | 168.46° S | 2025-12-20 03:47:49.928Z | 130.782° SE | 19.92° | 2025-12-20 03:50:49.928Z | 79.625° E |
| 6 mins | 2025-12-20 05:23:49.928Z | 253.413° W | 2025-12-20 05:26:49.928Z | 340.648° N | 37.288° | 2025-12-20 05:29:49.928Z | 39.506° NE |
| 5 mins | 2025-12-20 10:24:49.928Z | 348.401° N | 2025-12-20 10:26:49.928Z | 36.93° NE | 24.014° | 2025-12-20 10:29:49.928Z | 86.364° E |
| 6 mins | 2025-12-20 12:02:49.928Z | 295.862° NW | 2025-12-20 12:05:49.928Z | 207.98° SW | 37.541° | 2025-12-20 12:08:49.928Z | 150.594° SSE |
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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