STARLINK-5685, 55477
Orbit data source: Space-Track
STARLINK-5685, 55477 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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55477 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, 4.4 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 18 hours ago
TLE from 18 hours ago
0 STARLINK-5685
1 55477U 23015AE 25255.56721388 .00000290 00000-0 36535-4 0 9995
2 55477 43.0024 201.3713 0001145 272.6259 87.4452 15.02538241144105Epoch: 2025-09-12T13:36Z
TLE epoch observation values (Epoch: 2025-09-12T13:36:47.279Z)
Latitude
-0.00003°
Longitude
5.3612°
Altitude
558.815 km
Speed
7.584 km/s
True Right ascension
13h 25m 29s
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
23:53:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.791 km
Perigee altitude
560.202 km
Semi-major axis
6,939.133 km
Eccentricity
0.00011
Inclination
43.0024°
RAAN
201.3713°
Arg. of periapsis
272.6259°
True anomaly
87.45831°
Mean anomaly
87.4452°
Eccentric anomaly
87.45175°
Mean motion
3.75479 °/min
Orbital period
95.88 mins
BSTAR
0.000036535
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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-5685 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 | 2025-09-13 23:18:39.502Z | 215.444° SW | 2025-09-13 23:22:39.502Z | 134.104° SE | 30.584° | 2025-09-13 23:25:39.502Z | 84.306° E |
| 7 mins | 2025-09-14 00:59:39.502Z | 262.871° W | 2025-09-14 01:02:39.502Z | 331.992° NNW | 43.594° | 2025-09-14 01:06:39.502Z | 71.055° E |
| 7 mins | 2025-09-14 02:40:39.502Z | 289.054° WNW | 2025-09-14 02:43:39.502Z | 1.331° NNE | 39.88° | 2025-09-14 02:47:39.502Z | 83.457° E |
| 7 mins | 2025-09-14 04:21:39.502Z | 284.23° WNW | 2025-09-14 04:24:39.502Z | 180.619° SSW | 43.617° | 2025-09-14 04:28:39.502Z | 117.95° SE |
| 4 mins | 2025-09-14 06:03:39.502Z | 237.443° WSW | 2025-09-14 06:04:39.502Z | 219.023° SW | 17.772° | 2025-09-14 06:07:39.502Z | 172.954° S |
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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