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: 14 hours ago
TLE from 14 hours ago
0 STARLINK-5685
1 55477U 23015AE 25259.15701467 .00001004 00000-0 89383-4 0 9993
2 55477 43.0015 181.8636 0001118 273.0173 87.0541 15.02540240144647Epoch: 2025-09-16T03:46Z
TLE epoch observation values (Epoch: 2025-09-16T03:46:06.067Z)
Latitude
-0.00004°
Longitude
129.98692°
Altitude
558.805 km
Speed
7.584 km/s
True Right ascension
12h 07m 27s
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
10:28:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
561.766 km
Perigee altitude
560.214 km
Semi-major axis
6,939.127 km
Eccentricity
0.00011
Inclination
43.0015°
RAAN
181.8636°
Arg. of periapsis
273.0173°
True anomaly
87.06689°
Mean anomaly
87.0541°
Eccentric anomaly
87.0605°
Mean motion
3.75479 °/min
Orbital period
95.88 mins
BSTAR
0.000089383
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-09-16 21:30:20.950Z | 188.34° SSW | 2025-09-16 21:32:20.950Z | 154.174° SSE | 21.137° | 2025-09-16 21:35:20.950Z | 99.066° ESE |
| 6 mins | 2025-09-16 23:10:20.950Z | 247.51° W | 2025-09-16 23:13:20.950Z | 94.677° ESE | 44.389° | 2025-09-16 23:16:20.950Z | 72.707° E |
| 6 mins | 2025-09-17 00:51:20.950Z | 286.104° WNW | 2025-09-17 00:54:20.950Z | 22.06° NNE | 38.574° | 2025-09-17 00:57:20.950Z | 74.521° E |
| 6 mins | 2025-09-17 02:32:20.950Z | 290.541° WNW | 2025-09-17 02:35:20.950Z | 83.107° E | 42.882° | 2025-09-17 02:38:20.950Z | 103.683° ESE |
| 5 mins | 2025-09-17 04:13:20.950Z | 257.74° W | 2025-09-17 04:15:20.950Z | 212.044° SW | 26.932° | 2025-09-17 04:18:20.950Z | 155.857° 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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