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, 10.1 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 STARLINK-5685
1 55477U 23015AE 25340.39295731 -.00000274 00000-0 -51888-5 0 9992
2 55477 43.0034 100.4501 0001321 268.5465 91.5226 15.02538452156864Epoch: 2025-12-06T09:25Z
TLE epoch observation values (Epoch: 2025-12-06T09:25:51.511Z)
Latitude
-0.00003°
Longitude
-116.4359°
Altitude
558.875 km
Speed
7.584 km/s
True Right ascension
06h 41m 48s
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
18:31:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.912 km
Perigee altitude
560.079 km
Semi-major axis
6,939.132 km
Eccentricity
0.00013
Inclination
43.0034°
RAAN
100.4501°
Arg. of periapsis
268.5465°
True anomaly
91.53773°
Mean anomaly
91.5226°
Eccentric anomaly
91.53017°
Mean motion
3.75479 °/min
Orbital period
95.88 mins
BSTAR
-0.0000051888
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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 | 2025-12-07 11:08:54.739Z | 216.475° SW | 2025-12-07 11:12:54.739Z | 140.295° SSE | 31.028° | 2025-12-07 11:15:54.739Z | 85.482° E |
| 6 mins | 2025-12-07 12:50:54.739Z | 265.642° W | 2025-12-07 12:52:54.739Z | 311.085° NW | 43.059° | 2025-12-07 12:56:54.739Z | 70.732° E |
| 6 mins | 2025-12-07 14:31:54.739Z | 294.491° NW | 2025-12-07 14:33:54.739Z | 349.29° N | 39.576° | 2025-12-07 14:37:54.739Z | 82.862° E |
| 7 mins | 2025-12-07 16:11:54.739Z | 284.654° WNW | 2025-12-07 16:14:54.739Z | 206.733° SW | 43.791° | 2025-12-07 16:18:54.739Z | 118.167° SE |
| 4 mins | 2025-12-07 17:53:54.739Z | 240.461° WSW | 2025-12-07 17:54:54.739Z | 222.486° SW | 17.697° | 2025-12-07 17:57:54.739Z | 174.799° S |
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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