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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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-5685
1 55477U 23015AE 26077.23596348 .00080050 00000-0 57547-2 0 9994
2 55477 43.0011 267.0515 0001725 211.3830 148.6910 15.03306209172185Epoch: 2026-03-18T05:39Z
TLE epoch observation values (Epoch: 2026-03-18T05:39:47.244Z)
Latitude
-0.00002°
Longitude
6.302°
Altitude
557.51 km
Speed
7.584 km/s
True Right ascension
17h 48m 12s
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
22:23:34
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
559.831 km
Perigee altitude
557.438 km
Semi-major axis
6,936.771 km
Eccentricity
0.00017
Inclination
43.0011°
RAAN
267.0515°
Arg. of periapsis
211.383°
True anomaly
148.70127°
Mean anomaly
148.691°
Eccentric anomaly
148.69614°
Mean motion
3.75671 °/min
Orbital period
95.83 mins
BSTAR
0.0057547
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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 | 2026-03-19 18:41:55.973Z | 287.735° WNW | 2026-03-19 18:44:55.973Z | 351.447° N | 39.446° | 2026-03-19 18:48:55.973Z | 81.807° E |
| 7 mins | 2026-03-19 20:22:55.973Z | 285.483° WNW | 2026-03-19 20:25:55.973Z | 188.072° SSW | 44.301° | 2026-03-19 20:29:55.973Z | 115.775° SE |
| 4 mins | 2026-03-19 22:04:55.973Z | 238.628° WSW | 2026-03-19 22:05:55.973Z | 219.337° SW | 18.962° | 2026-03-19 22:08:55.973Z | 171.033° S |
| 6 mins | 2026-03-20 15:16:55.973Z | 218.491° SW | 2026-03-20 15:19:55.973Z | 138.813° SSE | 35.571° | 2026-03-20 15:22:55.973Z | 81.896° E |
| 6 mins | 2026-03-20 16:57:55.973Z | 272.803° WNW | 2026-03-20 16:59:55.973Z | 323.693° NNW | 41.762° | 2026-03-20 17:03:55.973Z | 70.954° E |
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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