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: 17 hours ago
TLE from 17 hours ago
0 STARLINK-5366
1 55499U 23015BC 25337.52045665 .00001020 00000-0 90561-4 0 9994
2 55499 43.0025 141.0129 0001162 270.8837 89.1873 15.02534680156890Epoch: 2025-12-03T12:29Z
TLE epoch observation values (Epoch: 2025-12-03T12:29:27.454Z)
Latitude
0.00003°
Longitude
-118.94153°
Altitude
558.85 km
Speed
7.584 km/s
True Right ascension
09h 24m 03s
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
03:23:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.813 km
Perigee altitude
560.201 km
Semi-major axis
6,939.144 km
Eccentricity
0.00012
Inclination
43.0025°
RAAN
141.0129°
Arg. of periapsis
270.8837°
True anomaly
89.20061°
Mean anomaly
89.1873°
Eccentric anomaly
89.19396°
Mean motion
3.75478 °/min
Orbital period
95.88 mins
BSTAR
0.000090561
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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 | 2025-12-04 14:13:12.314Z | 220.383° SW | 2025-12-04 14:17:12.314Z | 130.963° SE | 33.349° | 2025-12-04 14:20:12.314Z | 81.954° E |
| 7 mins | 2025-12-04 15:54:12.314Z | 266.827° W | 2025-12-04 15:57:12.314Z | 335.581° NNW | 42.713° | 2025-12-04 16:01:12.314Z | 71.153° E |
| 7 mins | 2025-12-04 17:35:12.314Z | 289.94° WNW | 2025-12-04 17:38:12.314Z | 1.065° NNE | 40.385° | 2025-12-04 17:42:12.314Z | 85.96° E |
| 6 mins | 2025-12-04 19:16:12.314Z | 281.814° WNW | 2025-12-04 19:19:12.314Z | 188.001° SSW | 42.022° | 2025-12-04 19:22:12.314Z | 124.81° SE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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