STARLINK-5857, 55946
Orbit data source: Space-Track
STARLINK-5857, 55946 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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55946 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-5857
1 55946U 23037AJ 26170.90876248 -.00000712 00000-0 -51849-4 0 9997
2 55946 69.9997 26.6471 0003017 266.9992 93.0822 14.98326442179284Epoch: 2026-06-19T21:48Z
TLE epoch observation values (Epoch: 2026-06-19T21:48:37.078Z)
Latitude
0°
Longitude
151.36163°
Altitude
574.604 km
Speed
7.574 km/s
True Right ascension
01h 46m 35s
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
21:39:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
572.111 km
Perigee altitude
567.919 km
Semi-major axis
6,948.152 km
Eccentricity
0.0003
Inclination
69.9997°
RAAN
26.6471°
Arg. of periapsis
266.9992°
True anomaly
93.11672°
Mean anomaly
93.0822°
Eccentric anomaly
93.09946°
Mean motion
3.74748 °/min
Orbital period
96.06 mins
BSTAR
-0.000051849
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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-5857 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 15:39:01.607Z | 219.267° SW | 2026-06-22 15:42:01.607Z | 303.382° NW | 41.158° | 2026-06-22 15:46:01.607Z | 17.435° NNE |
| 5 mins | 2026-06-23 00:04:01.607Z | 16.983° NNE | 2026-06-23 00:06:01.607Z | 56.617° ENE | 22.435° | 2026-06-23 00:09:01.607Z | 108.412° ESE |
| 5 mins | 2026-06-23 01:42:01.607Z | 299.854° NW | 2026-06-23 01:44:01.607Z | 260.548° W | 24.889° | 2026-06-23 01:47:01.607Z | 201.661° SSW |
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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