STARLINK-3550, 52373
Orbit data source: Space-Track
STARLINK-3550, 52373 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 29 Apr 2022 UTC via an FALCON 9 launch vehicle from the Air Force Eastern Test Range (AFETR). 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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52373 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
297 kg wet, ~275 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 10.1 m
Radar Cross Section
11.087 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 STARLINK-3550
1 52373U 22045AU 26119.95231486 .00000721 00000-0 63358-4 0 9999
2 52373 53.2173 318.9904 0001358 66.7808 293.3327 15.08837903223661Epoch: 2026-04-29T22:51Z
TLE epoch observation values (Epoch: 2026-04-29T22:51:20.003Z)
Latitude
-0.00005°
Longitude
118.25112°
Altitude
540.275 km
Speed
7.594 km/s
True Right ascension
21h 15m 57s
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
11:13:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.934 km
Perigee altitude
539.055 km
Semi-major axis
6,918.132 km
Eccentricity
0.00014
Inclination
53.2173°
RAAN
318.9904°
Arg. of periapsis
66.7808°
True anomaly
293.31841°
Mean anomaly
293.3327°
Eccentric anomaly
293.32556°
Mean motion
3.7719 °/min
Orbital period
95.44 mins
BSTAR
0.000063358
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Other satellites on launch #45 in the year 2022 (2022-04-29 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-3550 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 | 2026-04-30 14:53:43.021Z | 180.759° SSW | 2026-04-30 14:56:43.021Z | 132.19° SE | 21.059° | 2026-04-30 14:59:43.021Z | 79.62° E |
| 6 mins | 2026-04-30 16:33:43.021Z | 259.098° W | 2026-04-30 16:35:43.021Z | 311.732° NW | 36.885° | 2026-04-30 16:39:43.021Z | 40.689° NE |
| 5 mins | 2026-04-30 21:35:43.021Z | 350.801° N | 2026-04-30 21:37:43.021Z | 40.479° NE | 24.657° | 2026-04-30 21:40:43.021Z | 87.886° E |
| 5 mins | 2026-04-30 23:14:43.021Z | 289.118° WNW | 2026-04-30 23:16:43.021Z | 227.234° WSW | 37.578° | 2026-04-30 23:19:43.021Z | 154.009° SSE |
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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