STARLINK-5366, 55499
Orbit data source: Space-Track
STARLINK-5366, 55499 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 02 Feb 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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55499 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
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 13 hours ago
TLE from 13 hours ago
0 STARLINK-5366
1 55499U 23015BC 26244.87080536 .00000422 00000-0 24844-4 0 9992
2 55499 43.0022 64.4209 0001074 272.3573 87.7156 15.27576140198292Epoch: 2026-09-01T20:53Z
TLE epoch observation values (Epoch: 2026-09-01T20:53:57.583Z)
Latitude
0.00002°
Longitude
129.89952°
Altitude
482.807 km
Speed
7.626 km/s
True Right ascension
04h 17m 41s
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
01:48:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.743 km
Perigee altitude
484.268 km
Semi-major axis
6,863.142 km
Eccentricity
0.00011
Inclination
43.0022°
RAAN
64.4209°
Arg. of periapsis
272.3573°
True anomaly
87.7279°
Mean anomaly
87.7156°
Eccentric anomaly
87.72175°
Mean motion
3.81732 °/min
Orbital period
94.31 mins
BSTAR
0.000024844
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Other satellites on launch #15 in the year 2023 (2023-02-02 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-5366 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 | 2026-09-02 14:20:18.353Z | 177.135° S | 2026-09-02 14:22:18.353Z | 144.19° SSE | 14.567° | 2026-09-02 14:24:18.353Z | 109.955° ESE |
| 6 mins | 2026-09-02 15:58:18.353Z | 236.642° WSW | 2026-09-02 16:01:18.353Z | 116.013° SE | 41.082° | 2026-09-02 16:04:18.353Z | 75.232° E |
| 6 mins | 2026-09-02 17:37:18.353Z | 280.494° WNW | 2026-09-02 17:40:18.353Z | 18.846° NNE | 37.97° | 2026-09-02 17:43:18.353Z | 71.933° E |
| 5 mins | 2026-09-02 19:17:18.353Z | 296.764° NW | 2026-09-02 19:19:18.353Z | 29.282° NE | 42.236° | 2026-09-02 19:22:18.353Z | 94.319° ESE |
| 5 mins | 2026-09-02 20:56:18.353Z | 261.47° W | 2026-09-02 20:58:18.353Z | 196.614° SSW | 31.571° | 2026-09-02 21:01:18.353Z | 140.923° 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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