STARLINK-3504, 51881
Orbit data source: Space-Track
STARLINK-3504, 51881 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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51881 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-3504
1 51881U 22022AF 26171.44568089 .00001065 00000-0 84984-4 0 9991
2 51881 53.1615 257.7162 0001086 85.0890 275.0226 15.08846552238811Epoch: 2026-06-20T10:41Z
TLE epoch observation values (Epoch: 2026-06-20T10:41:46.828Z)
Latitude
0°
Longitude
-171.38911°
Altitude
540.549 km
Speed
7.593 km/s
True Right ascension
17h 10m 51s
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
21:30:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.729 km
Perigee altitude
539.226 km
Semi-major axis
6,918.114 km
Eccentricity
0.00011
Inclination
53.1615°
RAAN
257.7162°
Arg. of periapsis
85.089°
True anomaly
275.0102°
Mean anomaly
275.0226°
Eccentric anomaly
275.0164°
Mean motion
3.77191 °/min
Orbital period
95.44 mins
BSTAR
0.000084984
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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-3504 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 14:03:11.376Z | 332.712° NNW | 2026-06-22 14:05:11.376Z | 15.734° NNE | 30.989° | 2026-06-22 14:09:11.376Z | 100.322° ESE |
| 5 mins | 2026-06-22 15:43:11.376Z | 271.386° WNW | 2026-06-22 15:45:11.376Z | 219.312° SW | 27.231° | 2026-06-22 15:48:11.376Z | 167.795° S |
| 5 mins | 2026-06-23 07:14:11.376Z | 194.381° SSW | 2026-06-23 07:16:11.376Z | 133.868° SE | 35.845° | 2026-06-23 07:19:11.376Z | 65.087° ENE |
| 6 mins | 2026-06-23 08:53:11.376Z | 279.67° WNW | 2026-06-23 08:55:11.376Z | 318.496° NNW | 25.692° | 2026-06-23 08:59:11.376Z | 33.643° 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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