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: 6 hours ago
TLE from 6 hours ago
0 STARLINK-3821
1 52357U 22045AC 26070.73500573 -.00000029 00000-0 16259-4 0 9999
2 52357 53.2178 189.9377 0001238 99.4384 260.6748 15.08841883216092Epoch: 2026-03-11T17:38Z
TLE epoch observation values (Epoch: 2026-03-11T17:38:24.495Z)
Latitude
-0.00001°
Longitude
115.94065°
Altitude
540.774 km
Speed
7.593 km/s
True Right ascension
12h 39m 45s
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
04:18:28
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.839 km
Perigee altitude
539.126 km
Semi-major axis
6,918.12 km
Eccentricity
0.00012
Inclination
53.2178°
RAAN
189.9377°
Arg. of periapsis
99.4384°
True anomaly
260.6608°
Mean anomaly
260.6748°
Eccentric anomaly
260.6678°
Mean motion
3.77191 °/min
Orbital period
95.44 mins
BSTAR
0.000016259
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-03-12 09:41:19.733Z | 184.539° SSW | 2026-03-12 09:44:19.733Z | 128.003° SE | 24.719° | 2026-03-12 09:47:19.733Z | 74.441° E |
| 5 mins | 2026-03-12 11:21:19.733Z | 267.882° W | 2026-03-12 11:23:19.733Z | 321.779° NNW | 33.829° | 2026-03-12 11:26:19.733Z | 33.226° NE |
| 6 mins | 2026-03-12 16:22:19.733Z | 335.884° NNW | 2026-03-12 16:24:19.733Z | 16.149° NNE | 27.127° | 2026-03-12 16:28:19.733Z | 93.344° ESE |
| 5 mins | 2026-03-12 18:02:19.733Z | 280.478° WNW | 2026-03-12 18:04:19.733Z | 219.728° SW | 33.174° | 2026-03-12 18:07:19.733Z | 159.903° S |
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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