STARLINK-3289, 50173
Orbit data source: Space-Track
STARLINK-3289, 50173 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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50173 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: 21 hours ago
TLE from 21 hours ago
0 STARLINK-3289
1 50173U 21125T 26169.30917439 .00015600 00000-0 86409-3 0 9999
2 50173 53.2134 144.9889 0001349 43.7089 316.4012 15.13997285251978Epoch: 2026-06-18T07:25Z
TLE epoch observation values (Epoch: 2026-06-18T07:25:12.667Z)
Latitude
-0.00001°
Longitude
127.13176°
Altitude
524.249 km
Speed
7.603 km/s
True Right ascension
09h 39m 57s
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
15:35:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
525.202 km
Perigee altitude
523.339 km
Semi-major axis
6,902.408 km
Eccentricity
0.00013
Inclination
53.2134°
RAAN
144.9889°
Arg. of periapsis
43.7089°
True anomaly
316.39054°
Mean anomaly
316.4012°
Eccentric anomaly
316.39587°
Mean motion
3.78479 °/min
Orbital period
95.12 mins
BSTAR
0.00086409
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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-3289 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-06-19 06:02:34.641Z | 345.97° N | 2026-06-19 06:04:34.641Z | 21.664° NNE | 16.996° | 2026-06-19 06:06:34.641Z | 55.935° ENE |
| 6 mins | 2026-06-19 07:41:34.641Z | 317.859° NNW | 2026-06-19 07:43:34.641Z | 351.879° N | 41.464° | 2026-06-19 07:47:34.641Z | 122.122° SE |
| 6 mins | 2026-06-20 00:48:34.641Z | 229.166° WSW | 2026-06-20 00:50:34.641Z | 230.98° WSW | 44.69° | 2026-06-20 00:54:34.641Z | 49.971° ENE |
| 4 mins | 2026-06-20 02:28:34.641Z | 306.457° NW | 2026-06-20 02:30:34.641Z | 346.276° N | 18.696° | 2026-06-20 02:32:34.641Z | 20.39° NNE |
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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