STARLINK-3545, 51855
Orbit data source: Space-Track
STARLINK-3545, 51855 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 03 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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51855 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-3545
1 51855U 22022D 26171.44013961 .00000759 00000-0 65785-4 0 9993
2 51855 53.1589 277.6623 0001002 83.5326 276.5780 15.08840850238489Epoch: 2026-06-20T10:33Z
TLE epoch observation values (Epoch: 2026-06-20T10:33:48.062Z)
Latitude
0.00003°
Longitude
-149.44267°
Altitude
540.553 km
Speed
7.593 km/s
True Right ascension
18h 30m 38s
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
21:33:53
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.688 km
Perigee altitude
539.302 km
Semi-major axis
6,918.132 km
Eccentricity
0.0001
Inclination
53.1589°
RAAN
277.6623°
Arg. of periapsis
83.5326°
True anomaly
276.56659°
Mean anomaly
276.578°
Eccentric anomaly
276.5723°
Mean motion
3.7719 °/min
Orbital period
95.44 mins
BSTAR
0.000065785
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Other satellites on launch #22 in the year 2022 (2022-03-03 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-3545 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 | 2026-06-22 15:30:51.693Z | 328.313° NNW | 2026-06-22 15:33:51.693Z | 52.557° ENE | 34.025° | 2026-06-22 15:36:51.693Z | 104.827° ESE |
| 5 mins | 2026-06-22 17:10:51.693Z | 268.68° W | 2026-06-22 17:12:51.693Z | 223.725° SW | 23.564° | 2026-06-22 17:15:51.693Z | 174.162° S |
| 6 mins | 2026-06-23 08:41:51.693Z | 204.509° SW | 2026-06-23 08:43:51.693Z | 141.541° SSE | 39.795° | 2026-06-23 08:47:51.693Z | 57.575° ENE |
| 5 mins | 2026-06-23 10:21:51.693Z | 296.182° NW | 2026-06-23 10:23:51.693Z | 342.773° N | 23.684° | 2026-06-23 10:26:51.693Z | 31.348° NE |
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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