STARLINK-5948, 55991
Orbit data source: Space-Track
STARLINK-5948, 55991 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 24 Mar 2023 UTC via an FALCON 9 launch vehicle from the Air Force Eastern Test Range (AFETR). 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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55991 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: 2 days ago
TLE from 2 days ago
0 STARLINK-5948
1 55991U 23042F 26171.37214568 .00000762 00000-0 37238-4 0 9995
2 55991 43.0015 196.2838 0001418 291.1353 68.9347 15.27570392178610Epoch: 2026-06-20T08:55Z
TLE epoch observation values (Epoch: 2026-06-20T08:55:53.386Z)
Latitude
-0.00003°
Longitude
153.72361°
Altitude
482.504 km
Speed
7.626 km/s
True Right ascension
13h 05m 08s
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
21:34:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.996 km
Perigee altitude
484.05 km
Semi-major axis
6,863.16 km
Eccentricity
0.00014
Inclination
43.0015°
RAAN
196.2838°
Arg. of periapsis
291.1353°
True anomaly
68.94986°
Mean anomaly
68.9347°
Eccentric anomaly
68.94228°
Mean motion
3.81731 °/min
Orbital period
94.31 mins
BSTAR
0.000037238
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Other satellites on launch #42 in the year 2023 (2023-03-24 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-5948 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 | 2026-06-23 03:01:03.202Z | 175.088° S | 2026-06-23 03:03:03.202Z | 142.409° SSE | 13.949° | 2026-06-23 03:05:03.202Z | 109.305° ESE |
| 6 mins | 2026-06-23 04:39:03.202Z | 234.649° WSW | 2026-06-23 04:42:03.202Z | 112.968° SE | 39.875° | 2026-06-23 04:45:03.202Z | 75.461° E |
| 6 mins | 2026-06-23 06:18:03.202Z | 280.362° WNW | 2026-06-23 06:21:03.202Z | 24.692° NE | 37.515° | 2026-06-23 06:24:03.202Z | 72.063° E |
| 5 mins | 2026-06-23 07:58:03.202Z | 297.98° NW | 2026-06-23 08:00:03.202Z | 37.581° NE | 41.575° | 2026-06-23 08:03:03.202Z | 93.62° ESE |
| 5 mins | 2026-06-23 09:37:03.202Z | 261.083° W | 2026-06-23 09:39:03.202Z | 191.926° SSW | 32.153° | 2026-06-23 09:42:03.202Z | 139.037° 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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