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: 13 hours ago
TLE from 13 hours ago
0 STARLINK-5685
1 55477U 23015AE 26125.35355205 .00000302 00000-0 21392-4 0 9999
2 55477 43.0015 1.1994 0001741 263.6415 96.4238 15.25914437179478Epoch: 2026-05-05T08:29Z
TLE epoch observation values (Epoch: 2026-05-05T08:29:06.897Z)
Latitude
0.00001°
Longitude
10.69106°
Altitude
487.951 km
Speed
7.623 km/s
True Right ascension
00h 04m 47s
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
05:38:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
491.18 km
Perigee altitude
488.789 km
Semi-major axis
6,868.121 km
Eccentricity
0.00017
Inclination
43.0015°
RAAN
1.1994°
Arg. of periapsis
263.6415°
True anomaly
96.44362°
Mean anomaly
96.4238°
Eccentric anomaly
96.43371°
Mean motion
3.81317 °/min
Orbital period
94.41 mins
BSTAR
0.000021392
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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 | 2026-05-05 23:00:55.151Z | 289.662° WNW | 2026-05-05 23:03:55.151Z | 328.336° NNW | 40.202° | 2026-05-05 23:07:55.151Z | 94.691° ESE |
| 6 mins | 2026-05-06 00:40:55.151Z | 271.315° WNW | 2026-05-06 00:42:55.151Z | 228.761° WSW | 31.614° | 2026-05-06 00:46:55.151Z | 138.753° SSE |
| 5 mins | 2026-05-06 19:17:55.151Z | 231.48° WSW | 2026-05-06 19:19:55.151Z | 143.714° SSE | 42.173° | 2026-05-06 19:22:55.151Z | 76.301° E |
| 5 mins | 2026-05-06 20:56:55.151Z | 284.641° WNW | 2026-05-06 20:58:55.151Z | 351.596° N | 39.187° | 2026-05-06 21:01:55.151Z | 69.965° E |
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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