STARLINK-5473, 55663
Orbit data source: Space-Track
STARLINK-5473, 55663 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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55663 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: 10 hours ago
TLE from 10 hours ago
0 STARLINK-5473
1 55663U 23021AM 26091.37956060 -.00001025 00000-0 -78131-4 0 9991
2 55663 70.0001 107.2328 0003233 258.8462 101.2334 14.98312748172678Epoch: 2026-04-01T09:06Z
TLE epoch observation values (Epoch: 2026-04-01T09:06:34.035Z)
Latitude
-0.00002°
Longitude
140.84775°
Altitude
574.972 km
Speed
7.573 km/s
True Right ascension
07h 08m 55s
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
00:49:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
572.304 km
Perigee altitude
567.811 km
Semi-major axis
6,948.194 km
Eccentricity
0.00032
Inclination
70.0001°
RAAN
107.2328°
Arg. of periapsis
258.8462°
True anomaly
101.26973°
Mean anomaly
101.2334°
Eccentric anomaly
101.25157°
Mean motion
3.74744 °/min
Orbital period
96.07 mins
BSTAR
-0.000078131
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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-5473 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 | 2026-04-02 01:16:12.865Z | 131.798° SE | 2026-04-02 01:18:12.865Z | 102.497° ESE | 13.484° | 2026-04-02 01:20:12.865Z | 73.084° E |
| 6 mins | 2026-04-02 02:53:12.865Z | 229.402° WSW | 2026-04-02 02:56:12.865Z | 303.783° NW | 36.101° | 2026-04-02 02:59:12.865Z | 8.224° NNE |
| 5 mins | 2026-04-02 11:18:12.865Z | 12.872° NNE | 2026-04-02 11:20:12.865Z | 57.843° ENE | 26.748° | 2026-04-02 11:23:12.865Z | 115.499° SE |
| 5 mins | 2026-04-02 12:56:12.865Z | 293.994° NW | 2026-04-02 12:58:12.865Z | 258.159° W | 20.385° | 2026-04-02 13:01:12.865Z | 207.759° SW |
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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