STARLINK-5861, 55921
Orbit data source: Space-Track
STARLINK-5861, 55921 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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55921 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
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: 3 days ago
TLE from 3 days ago
0 STARLINK-5861
1 55921U 23037H 26170.93402145 -.00000512 00000-0 -35097-4 0 9999
2 55921 69.9999 46.6142 0003012 269.2163 90.8651 14.98329922178805Epoch: 2026-06-19T22:24Z
TLE epoch observation values (Epoch: 2026-06-19T22:24:59.453Z)
Latitude
-0.00001°
Longitude
162.2106°
Altitude
574.512 km
Speed
7.574 km/s
True Right ascension
03h 06m 27s
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
21:56:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
572.097 km
Perigee altitude
567.912 km
Semi-major axis
6,948.141 km
Eccentricity
0.0003
Inclination
69.9999°
RAAN
46.6142°
Arg. of periapsis
269.2163°
True anomaly
90.89961°
Mean anomaly
90.8651°
Eccentric anomaly
90.88236°
Mean motion
3.74749 °/min
Orbital period
96.06 mins
BSTAR
-0.000035097
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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-5861 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 16:14:16.241Z | 175.214° S | 2026-06-22 16:17:16.241Z | 115.509° SE | 33.413° | 2026-06-22 16:21:16.241Z | 39.192° NE |
| 4 mins | 2026-06-22 17:54:16.241Z | 277.88° WNW | 2026-06-22 17:56:16.241Z | 312.631° NW | 16.758° | 2026-06-22 17:58:16.241Z | 343.761° N |
| 6 mins | 2026-06-23 02:17:16.241Z | 335.226° NNW | 2026-06-23 02:20:16.241Z | 161.016° S | 43.728° | 2026-06-23 02:23:16.241Z | 157.387° SSE |
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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