STARLINK-3291, 50175
Orbit data source: Space-Track
STARLINK-3291, 50175 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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50175 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: 3 hours ago
TLE from 3 hours ago
0 STARLINK-3291
1 50175U 21125V 26170.18619795 -.00000019 00000-0 16889-4 0 9998
2 50175 53.1598 153.3781 0001363 79.2084 280.9061 15.08830349251928Epoch: 2026-06-19T04:28Z
TLE epoch observation values (Epoch: 2026-06-19T04:28:07.502Z)
Latitude
-0.00003°
Longitude
178.92803°
Altitude
540.486 km
Speed
7.593 km/s
True Right ascension
10h 13m 30s
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
18:37:46
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.97 km
Perigee altitude
539.084 km
Semi-major axis
6,918.164 km
Eccentricity
0.00014
Inclination
53.1598°
RAAN
153.3781°
Arg. of periapsis
79.2084°
True anomaly
280.89076°
Mean anomaly
280.9061°
Eccentric anomaly
280.89843°
Mean motion
3.77187 °/min
Orbital period
95.44 mins
BSTAR
0.000016889
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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-3291 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 | 2026-06-19 08:08:01.183Z | 323.558° NNW | 2026-06-19 08:11:01.183Z | 33.654° NE | 36.504° | 2026-06-19 08:14:01.183Z | 105.211° ESE |
| 5 mins | 2026-06-19 09:48:01.183Z | 272.742° WNW | 2026-06-19 09:50:01.183Z | 234.149° WSW | 21.885° | 2026-06-19 09:53:01.183Z | 180.527° SSW |
| 6 mins | 2026-06-20 01:19:01.183Z | 212.002° SW | 2026-06-20 01:21:01.183Z | 174.738° S | 39.77° | 2026-06-20 01:25:01.183Z | 57.031° ENE |
| 5 mins | 2026-06-20 02:59:01.183Z | 291.262° WNW | 2026-06-20 03:01:01.183Z | 331.628° NNW | 22.892° | 2026-06-20 03:04:01.183Z | 26.749° NE |
| 4 mins | 2026-06-20 06:21:01.183Z | 353.606° N | 2026-06-20 06:22:01.183Z | 11.198° NNE | 16.358° | 2026-06-20 06:25:01.183Z | 59.347° ENE |
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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