STARLINK-3553, 51866
Orbit data source: Space-Track
STARLINK-3553, 51866 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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51866 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-3553
1 51866U 22022Q 26171.43465666 .00001515 00000-0 11329-3 0 9992
2 51866 53.1588 267.6183 0001153 98.7045 261.4077 15.08820785238626Epoch: 2026-06-20T10:25Z
TLE epoch observation values (Epoch: 2026-06-20T10:25:54.335Z)
Latitude
-0.00002°
Longitude
-157.50744°
Altitude
540.813 km
Speed
7.593 km/s
True Right ascension
17h 50m 28s
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
21:33:35
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.854 km
Perigee altitude
539.259 km
Semi-major axis
6,918.193 km
Eccentricity
0.00012
Inclination
53.1588°
RAAN
267.6183°
Arg. of periapsis
98.7045°
True anomaly
261.39464°
Mean anomaly
261.4077°
Eccentric anomaly
261.40117°
Mean motion
3.77185 °/min
Orbital period
95.44 mins
BSTAR
0.00011329
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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-3553 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-06-22 13:45:34.376Z | 351.585° N | 2026-06-22 13:47:34.376Z | 30.296° NE | 18.238° | 2026-06-22 13:49:34.376Z | 62.853° ENE |
| 6 mins | 2026-06-22 15:24:34.376Z | 313.868° NW | 2026-06-22 15:26:34.376Z | 336.444° NNW | 43.248° | 2026-06-22 15:30:34.376Z | 126.97° SE |
| 6 mins | 2026-06-23 08:34:34.376Z | 237.499° WSW | 2026-06-23 08:37:34.376Z | 351.747° N | 43.621° | 2026-06-23 08:40:34.376Z | 45.831° ENE |
| 4 mins | 2026-06-23 10:15:34.376Z | 309.009° NW | 2026-06-23 10:17:34.376Z | 346.088° N | 17.836° | 2026-06-23 10:19:34.376Z | 19.47° NNE |
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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