STARLINK-5477, 55659
Orbit data source: Space-Track
STARLINK-5477, 55659 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 17 Feb 2023 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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55659 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: 2 days ago
TLE from 2 days ago
0 STARLINK-5477
1 55659U 23021AH 26171.44979866 -.00002008 00000-0 -16045-3 0 9999
2 55659 69.9992 265.4919 0002877 267.8953 92.1877 14.98345000184669Epoch: 2026-06-20T10:47Z
TLE epoch observation values (Epoch: 2026-06-20T10:47:42.604Z)
Latitude
0.00003°
Longitude
-165.09986°
Altitude
574.51 km
Speed
7.574 km/s
True Right ascension
17h 41m 58s
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
21:44:38
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
571.957 km
Perigee altitude
567.959 km
Semi-major axis
6,948.095 km
Eccentricity
0.00029
Inclination
69.9992°
RAAN
265.4919°
Arg. of periapsis
267.8953°
True anomaly
92.22064°
Mean anomaly
92.1877°
Eccentric anomaly
92.20417°
Mean motion
3.74753 °/min
Orbital period
96.06 mins
BSTAR
-0.00016045
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Other satellites on launch #21 in the year 2023 (2023-02-17 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-5477 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-22 16:12:35.576Z | 5.28° NNE | 2026-06-22 16:15:35.576Z | 61.067° ENE | 24.008° | 2026-06-22 16:18:35.576Z | 112.536° SE |
| 5 mins | 2026-06-22 17:51:35.576Z | 295.322° NW | 2026-06-22 17:53:35.576Z | 255.611° W | 23.154° | 2026-06-22 17:56:35.576Z | 202.613° SW |
| 6 mins | 2026-06-23 07:51:35.576Z | 246.263° WSW | 2026-06-23 07:53:35.576Z | 294.075° NW | 30.746° | 2026-06-23 07:57:35.576Z | 7.857° NNE |
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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