STARLINK-3281, 50183
Orbit data source: Space-Track
STARLINK-3281, 50183 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 18 Dec 2021 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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50183 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
290 kg wet, ~270 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-3281
1 50183U 21125AD 26171.20555014 .00000746 00000-0 64975-4 0 9999
2 50183 53.1606 148.7960 0001498 78.5870 281.5290 15.08839788252128Epoch: 2026-06-20T04:55Z
TLE epoch observation values (Epoch: 2026-06-20T04:55:59.532Z)
Latitude
0.00003°
Longitude
166.37446°
Altitude
540.428 km
Speed
7.593 km/s
True Right ascension
09h 55m 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
23:07:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
541.034 km
Perigee altitude
538.962 km
Semi-major axis
6,918.135 km
Eccentricity
0.00015
Inclination
53.1606°
RAAN
148.796°
Arg. of periapsis
78.587°
True anomaly
281.51218°
Mean anomaly
281.529°
Eccentric anomaly
281.52059°
Mean motion
3.7719 °/min
Orbital period
95.44 mins
BSTAR
0.000064975
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Other satellites on launch #125 in the year 2021 (2021-12-18 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-3281 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-22 23:51:22.417Z | 199.718° SSW | 2026-06-22 23:54:22.417Z | 147.38° SSE | 31.593° | 2026-06-22 23:58:22.417Z | 64.682° ENE |
| 5 mins | 2026-06-23 01:32:22.417Z | 284.896° WNW | 2026-06-23 01:34:22.417Z | 338.22° N | 28.254° | 2026-06-23 01:37:22.417Z | 32.523° NE |
| 5 mins | 2026-06-23 06:33:22.417Z | 335.429° NNW | 2026-06-23 06:35:22.417Z | 29.869° NE | 33.28° | 2026-06-23 06:38:22.417Z | 98.834° ESE |
| 5 mins | 2026-06-23 08:12:22.417Z | 277.919° WNW | 2026-06-23 08:14:22.417Z | 237.488° WSW | 25.284° | 2026-06-23 08:17:22.417Z | 176.13° S |
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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