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: 19 hours ago
TLE from 19 hours ago
0 STARLINK-1231
1 45212U 20012AL 25321.94664734 .00029237 00000-0 16269-2 0 9994
2 45212 53.0471 165.7972 0008091 101.8414 258.3486 15.13419354318262Epoch: 2025-11-17T22:43Z
TLE epoch observation values (Epoch: 2025-11-17T22:43:10.330Z)
Latitude
0.00001°
Longitude
127.76438°
Altitude
527.795 km
Speed
7.6 km/s
True Right ascension
11h 03m 11s
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
14:38:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
531.64 km
Perigee altitude
520.468 km
Semi-major axis
6,904.191 km
Eccentricity
0.00081
Inclination
53.0471°
RAAN
165.7972°
Arg. of periapsis
101.8414°
True anomaly
258.25781°
Mean anomaly
258.3486°
Eccentric anomaly
258.3032°
Mean motion
3.78333 °/min
Orbital period
95.15 mins
BSTAR
0.0016269
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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 | 2025-11-18 17:59:32.756Z | 287.443° WNW | 2025-11-18 18:02:32.756Z | 343.729° N | 20.817° | 2025-11-18 18:04:32.756Z | 20.431° NNE |
| 6 mins | 2025-11-18 22:59:32.756Z | 316.403° NNW | 2025-11-18 23:02:32.756Z | 54.093° ENE | 42.833° | 2025-11-18 23:05:32.756Z | 120.229° SE |
| 5 mins | 2025-11-19 16:07:32.756Z | 226.499° WSW | 2025-11-19 16:09:32.756Z | 135.417° SSE | 44.928° | 2025-11-19 16:12:32.756Z | 51.317° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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