STARLINK-3678, 52121
Orbit data source: Space-Track
STARLINK-3678, 52121 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 19 Mar 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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52121 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
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 STARLINK-3678
1 52121U 22029AK 26171.17427764 -.00000197 00000-0 57327-5 0 9998
2 52121 53.1607 328.9341 0001432 84.1549 275.9606 15.08837610236393Epoch: 2026-06-20T04:10Z
TLE epoch observation values (Epoch: 2026-06-20T04:10:57.588Z)
Latitude
0.00003°
Longitude
-2.19852°
Altitude
540.539 km
Speed
7.593 km/s
True Right ascension
21h 55m 44s
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
21:25:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.995 km
Perigee altitude
539.014 km
Semi-major axis
6,918.142 km
Eccentricity
0.00014
Inclination
53.1607°
RAAN
328.9341°
Arg. of periapsis
84.1549°
True anomaly
275.94428°
Mean anomaly
275.9606°
Eccentric anomaly
275.95244°
Mean motion
3.77189 °/min
Orbital period
95.44 mins
BSTAR
0.0000057327
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Other satellites on launch #29 in the year 2022 (2022-03-19 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-3678 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 11:58:32.919Z | 197.115° SSW | 2026-06-22 12:01:32.919Z | 144.956° SSE | 30.058° | 2026-06-22 12:05:32.919Z | 65.829° ENE |
| 6 mins | 2026-06-22 13:38:32.919Z | 270.444° WNW | 2026-06-22 13:41:32.919Z | 339.869° N | 29.217° | 2026-06-22 13:44:32.919Z | 33.545° NE |
| 5 mins | 2026-06-22 18:40:32.919Z | 337.349° NNW | 2026-06-22 18:42:32.919Z | 31.371° NE | 32.078° | 2026-06-22 18:45:32.919Z | 96.951° ESE |
| 5 mins | 2026-06-22 20:19:32.919Z | 279.258° WNW | 2026-06-22 20:21:32.919Z | 237.195° WSW | 26.794° | 2026-06-22 20:24:32.919Z | 173.525° 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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