STARLINK-3555, 51863
Orbit data source: Space-Track
STARLINK-3555, 51863 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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51863 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-3555
1 51863U 22022M 26171.44475106 .00006483 00000-0 42496-3 0 9998
2 51863 53.1577 267.7186 0001036 82.0059 278.1049 15.08846456238623Epoch: 2026-06-20T10:40Z
TLE epoch observation values (Epoch: 2026-06-20T10:40:26.491Z)
Latitude
-0.0001°
Longitude
-161.05114°
Altitude
540.514 km
Speed
7.593 km/s
True Right ascension
17h 50m 52s
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
21:31:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.695 km
Perigee altitude
539.261 km
Semi-major axis
6,918.115 km
Eccentricity
0.0001
Inclination
53.1577°
RAAN
267.7186°
Arg. of periapsis
82.0059°
True anomaly
278.09315°
Mean anomaly
278.1049°
Eccentric anomaly
278.09902°
Mean motion
3.77191 °/min
Orbital period
95.44 mins
BSTAR
0.00042496
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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-3555 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-22 10:38:36.113Z | 299.738° NW | 2026-06-22 10:40:36.113Z | 331.858° NNW | 17.483° | 2026-06-22 10:43:36.113Z | 22.781° NE |
| 4 mins | 2026-06-22 14:00:36.113Z | 349.487° N | 2026-06-22 14:02:36.113Z | 31.038° NE | 20.78° | 2026-06-22 14:04:36.113Z | 67.07° ENE |
| 6 mins | 2026-06-22 15:39:36.113Z | 304.778° NW | 2026-06-22 15:41:36.113Z | 275.425° WNW | 42.929° | 2026-06-22 15:45:36.113Z | 136.972° SSE |
| 4 mins | 2026-06-23 07:11:36.113Z | 160.295° S | 2026-06-23 07:13:36.113Z | 123.01° SE | 18.366° | 2026-06-23 07:15:36.113Z | 88.928° E |
| 6 mins | 2026-06-23 08:49:36.113Z | 248.924° W | 2026-06-23 08:52:36.113Z | 338.776° N | 39.647° | 2026-06-23 08:55:36.113Z | 40.653° NE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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