STARLINK-5909, 55938
Orbit data source: Space-Track
STARLINK-5909, 55938 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 17 Mar 2023 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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55938 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
305 kg wet, ~290 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 10.1 m
Radar Cross Section
11.087 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 STARLINK-5909
1 55938U 23037AA 25346.86121350 -.00000510 00000-0 -34958-4 0 9992
2 55938 69.9991 143.4006 0002939 272.0357 88.0465 14.98325768150978Epoch: 2025-12-12T20:40Z
TLE epoch observation values (Epoch: 2025-12-12T20:40:08.846Z)
Latitude
-0.00006°
Longitude
111.56695°
Altitude
574.424 km
Speed
7.574 km/s
True Right ascension
09h 33m 36s
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
05:23:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
572.059 km
Perigee altitude
567.975 km
Semi-major axis
6,948.154 km
Eccentricity
0.00029
Inclination
69.9991°
RAAN
143.4006°
Arg. of periapsis
272.0357°
True anomaly
88.08016°
Mean anomaly
88.0465°
Eccentric anomaly
88.06333°
Mean motion
3.74748 °/min
Orbital period
96.06 mins
BSTAR
-0.000034958
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Other satellites on launch #37 in the year 2023 (2023-03-17 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-5909 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 | 2025-12-13 11:13:38.264Z | 147.022° SSE | 2025-12-13 11:15:38.264Z | 111.554° ESE | 21.056° | 2025-12-13 11:18:38.264Z | 58.608° ENE |
| 6 mins | 2025-12-13 12:51:38.264Z | 251.673° W | 2025-12-13 12:53:38.264Z | 290.076° WNW | 25.528° | 2025-12-13 12:57:38.264Z | 2.447° NNE |
| 6 mins | 2025-12-13 21:15:38.264Z | 354.729° N | 2025-12-13 21:18:38.264Z | 84.415° E | 36.105° | 2025-12-13 21:21:38.264Z | 135.56° 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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