STARLINK-3821, 52357
Orbit data source: Space-Track
STARLINK-3821, 52357 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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52357 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: 2 days ago
TLE from 2 days ago
0 STARLINK-3821
1 52357U 22045AC 26170.95623374 -.00000185 00000-0 65067-5 0 9994
2 52357 53.1614 99.9178 0001539 93.5224 266.5944 15.08836656231224Epoch: 2026-06-19T22:56Z
TLE epoch observation values (Epoch: 2026-06-19T22:56:58.595Z)
Latitude
0.00004°
Longitude
-152.50409°
Altitude
540.709 km
Speed
7.593 km/s
True Right ascension
06h 39m 40s
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
21:47:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
541.072 km
Perigee altitude
538.943 km
Semi-major axis
6,918.145 km
Eccentricity
0.00015
Inclination
53.1614°
RAAN
99.9178°
Arg. of periapsis
93.5224°
True anomaly
266.5768°
Mean anomaly
266.5944°
Eccentric anomaly
266.5856°
Mean motion
3.77189 °/min
Orbital period
95.44 mins
BSTAR
0.0000065067
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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-3821 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 | 2026-06-22 21:03:48.886Z | 221.923° SW | 2026-06-22 21:07:48.886Z | 107.634° ESE | 43.488° | 2026-06-22 21:10:48.886Z | 54.447° ENE |
| 4 mins | 2026-06-22 22:45:48.886Z | 304.544° NW | 2026-06-22 22:46:48.886Z | 324.693° NNW | 20.894° | 2026-06-22 22:49:48.886Z | 22.157° NNE |
| 4 mins | 2026-06-23 02:06:48.886Z | 348.095° N | 2026-06-23 02:08:48.886Z | 24.414° NE | 17.361° | 2026-06-23 02:10:48.886Z | 57.496° ENE |
| 6 mins | 2026-06-23 03:45:48.886Z | 317.216° NNW | 2026-06-23 03:48:48.886Z | 74.736° E | 42.277° | 2026-06-23 03:51:48.886Z | 121.171° SE |
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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