STARLINK-5475, 55661
Orbit data source: Space-Track
STARLINK-5475, 55661 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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55661 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-5475
1 55661U 23021AK 26171.43309794 .00000018 00000-0 93367-5 0 9999
2 55661 69.9995 265.4361 0003279 269.4941 90.5843 14.98331978184673Epoch: 2026-06-20T10:23Z
TLE epoch observation values (Epoch: 2026-06-20T10:23:39.662Z)
Latitude
0.00007°
Longitude
-159.12693°
Altitude
574.498 km
Speed
7.574 km/s
True Right ascension
17h 41m 44s
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
21:51:55
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
572.276 km
Perigee altitude
567.72 km
Semi-major axis
6,948.135 km
Eccentricity
0.00033
Inclination
69.9995°
RAAN
265.4361°
Arg. of periapsis
269.4941°
True anomaly
90.62187°
Mean anomaly
90.5843°
Eccentric anomaly
90.60309°
Mean motion
3.74749 °/min
Orbital period
96.06 mins
BSTAR
0.0000093367
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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-5475 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-06-22 15:48:50.625Z | 23.405° NE | 2026-06-22 15:50:50.625Z | 55.696° ENE | 15.498° | 2026-06-22 15:52:50.625Z | 86.641° E |
| 6 mins | 2026-06-22 17:26:50.625Z | 314.104° NW | 2026-06-22 17:28:50.625Z | 269.262° W | 35.315° | 2026-06-22 17:32:50.625Z | 178.381° S |
| 6 mins | 2026-06-23 07:26:50.625Z | 217.893° SW | 2026-06-23 07:28:50.625Z | 265.839° W | 42.186° | 2026-06-23 07:32:50.625Z | 18.413° 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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