STARLINK-3955, 52561
Orbit data source: Space-Track
STARLINK-3955, 52561 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 13 May 2022 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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52561 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-3955
1 52561U 22051AE 26171.03765454 -.00000149 00000-0 87343-5 0 9995
2 52561 53.1595 34.5514 0001203 82.2482 277.8646 15.08832309226822Epoch: 2026-06-20T00:54Z
TLE epoch observation values (Epoch: 2026-06-20T00:54:13.352Z)
Latitude
-0.00001°
Longitude
112.73774°
Altitude
540.544 km
Speed
7.593 km/s
True Right ascension
02h 18m 12s
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
21:33:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.853 km
Perigee altitude
539.189 km
Semi-major axis
6,918.158 km
Eccentricity
0.00012
Inclination
53.1595°
RAAN
34.5514°
Arg. of periapsis
82.2482°
True anomaly
277.85094°
Mean anomaly
277.8646°
Eccentric anomaly
277.85777°
Mean motion
3.77188 °/min
Orbital period
95.44 mins
BSTAR
0.0000087343
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Other satellites on launch #51 in the year 2022 (2022-05-13 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-3955 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 16:39:36.034Z | 215.124° SW | 2026-06-22 16:42:36.034Z | 168.004° S | 40.177° | 2026-06-22 16:46:36.034Z | 57.014° ENE |
| 5 mins | 2026-06-22 18:20:36.034Z | 292.412° WNW | 2026-06-22 18:22:36.034Z | 334.064° NNW | 23.056° | 2026-06-22 18:25:36.034Z | 27.798° NE |
| 6 mins | 2026-06-22 23:21:36.034Z | 323.889° NNW | 2026-06-22 23:23:36.034Z | 17.545° NNE | 40.297° | 2026-06-22 23:27:36.034Z | 116.696° SE |
| 4 mins | 2026-06-23 01:01:36.034Z | 256.052° W | 2026-06-23 01:02:36.034Z | 237.487° WSW | 17.58° | 2026-06-23 01:05:36.034Z | 188.69° SSW |
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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