STARLINK-5507, 55638
Orbit data source: Space-Track
STARLINK-5507, 55638 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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55638 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-5507
1 55638U 23021L 26171.39601029 .00000645 00000-0 61800-4 0 9996
2 55638 69.9995 305.4532 0003154 263.7620 96.3180 14.98343390183684Epoch: 2026-06-20T09:30Z
TLE epoch observation values (Epoch: 2026-06-20T09:30:15.289Z)
Latitude
0.00002°
Longitude
-105.72174°
Altitude
574.68 km
Speed
7.574 km/s
True Right ascension
20h 21m 48s
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
21:45:18
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
572.154 km
Perigee altitude
567.771 km
Semi-major axis
6,948.1 km
Eccentricity
0.00032
Inclination
69.9995°
RAAN
305.4532°
Arg. of periapsis
263.762°
True anomaly
96.35392°
Mean anomaly
96.318°
Eccentric anomaly
96.33596°
Mean motion
3.74752 °/min
Orbital period
96.06 mins
BSTAR
0.0000618
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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-5507 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-22 11:21:14.559Z | 268.266° W | 2026-06-22 11:24:14.559Z | 314.662° NW | 15.494° | 2026-06-22 11:26:14.559Z | 344.19° N |
| 6 mins | 2026-06-22 19:45:14.559Z | 331.541° NNW | 2026-06-22 19:47:14.559Z | 311.695° NW | 42.86° | 2026-06-22 19:51:14.559Z | 161.026° S |
| 6 mins | 2026-06-23 09:45:14.559Z | 191.858° SSW | 2026-06-23 09:47:14.559Z | 148.778° SSE | 42.855° | 2026-06-23 09:51:14.559Z | 29.253° NE |
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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