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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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
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 STARLINK-5366
1 55499U 23015BC 25287.66206839 -.00000160 00000-0 32009-5 0 9994
2 55499 42.9980 51.9265 0000820 289.8370 70.2384 15.02533813149392Epoch: 2025-10-14T15:53Z
TLE epoch observation values (Epoch: 2025-10-14T15:53:22.708Z)
Latitude
-0.00002°
Longitude
150.13457°
Altitude
558.672 km
Speed
7.584 km/s
True Right ascension
03h 27m 42s
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
18:46:49
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.58 km
Perigee altitude
560.442 km
Semi-major axis
6,939.148 km
Eccentricity
0.00008
Inclination
42.998°
RAAN
51.9265°
Arg. of periapsis
289.837°
True anomaly
70.24724°
Mean anomaly
70.2384°
Eccentric anomaly
70.24282°
Mean motion
3.75478 °/min
Orbital period
95.88 mins
BSTAR
0.0000032009
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-16 11:10:12.257Z | 216.325° SW | 2025-10-16 11:13:12.257Z | 159.786° S | 32.713° | 2025-10-16 11:17:12.257Z | 81.395° E |
| 6 mins | 2025-10-16 12:51:12.257Z | 266.026° W | 2025-10-16 12:54:12.257Z | 9.462° NNE | 42.931° | 2025-10-16 12:57:12.257Z | 69.463° E |
| 6 mins | 2025-10-16 14:32:12.257Z | 291.149° WNW | 2025-10-16 14:35:12.257Z | 22.041° NNE | 39.808° | 2025-10-16 14:38:12.257Z | 82.243° E |
| 6 mins | 2025-10-16 16:13:12.257Z | 281.812° WNW | 2025-10-16 16:16:12.257Z | 160.346° S | 41.458° | 2025-10-16 16:19:12.257Z | 121.692° SE |
| 4 mins | 2025-10-16 17:54:12.257Z | 247.1° WSW | 2025-10-16 17:56:12.257Z | 213.444° SW | 16.317° | 2025-10-16 17:58:12.257Z | 182.545° 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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