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: 6 hours ago
TLE from 6 hours ago
0 STARLINK-5477
1 55659U 23021AH 26091.40459368 -.00001443 00000-0 -11321-3 0 9990
2 55659 69.9987 107.3211 0002404 260.5505 99.5382 14.98331899172672Epoch: 2026-04-01T09:42Z
TLE epoch observation values (Epoch: 2026-04-01T09:42:36.893Z)
Latitude
-0.00009°
Longitude
131.89944°
Altitude
574.751 km
Speed
7.574 km/s
True Right ascension
07h 09m 17s
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
21:23:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
571.669 km
Perigee altitude
568.328 km
Semi-major axis
6,948.135 km
Eccentricity
0.00024
Inclination
69.9987°
RAAN
107.3211°
Arg. of periapsis
260.5505°
True anomaly
99.56537°
Mean anomaly
99.5382°
Eccentric anomaly
99.55178°
Mean motion
3.74749 °/min
Orbital period
96.06 mins
BSTAR
-0.00011321
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-04-02 01:51:06.872Z | 171.692° S | 2026-04-02 01:55:06.872Z | 96.292° ESE | 28.614° | 2026-04-02 01:58:06.872Z | 45.83° ENE |
| 5 mins | 2026-04-02 03:31:06.872Z | 268.201° W | 2026-04-02 03:33:06.872Z | 304.414° NW | 19.574° | 2026-04-02 03:36:06.872Z | 352.574° N |
| 7 mins | 2026-04-02 11:54:06.872Z | 340.926° N | 2026-04-02 11:57:06.872Z | 57.668° ENE | 43.974° | 2026-04-02 12:01:06.872Z | 150.69° 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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