STARLINK-3520, 51741
Orbit data source: Space-Track
STARLINK-3520, 51741 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Mon, 21 Feb 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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51741 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-3520
1 51741U 22016AD 26171.44664066 -.00001070 00000-0 -49149-4 0 9993
2 51741 53.1595 217.7211 0001200 77.0600 283.0525 15.08823468239073Epoch: 2026-06-20T10:43Z
TLE epoch observation values (Epoch: 2026-06-20T10:43:09.753Z)
Latitude
-0.00003°
Longitude
148.2693°
Altitude
540.498 km
Speed
7.593 km/s
True Right ascension
14h 30m 53s
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
21:30:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.878 km
Perigee altitude
539.218 km
Semi-major axis
6,918.185 km
Eccentricity
0.00012
Inclination
53.1595°
RAAN
217.7211°
Arg. of periapsis
77.06°
True anomaly
283.0391°
Mean anomaly
283.0525°
Eccentric anomaly
283.0458°
Mean motion
3.77185 °/min
Orbital period
95.44 mins
BSTAR
-0.000049149
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Other satellites on launch #16 in the year 2022 (2022-02-21 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-3520 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 10:51:24.633Z | 329.088° NNW | 2026-06-22 10:54:24.633Z | 16.914° NNE | 22.577° | 2026-06-22 10:57:24.633Z | 75.252° E |
| 6 mins | 2026-06-22 12:31:24.633Z | 301.471° NW | 2026-06-22 12:34:24.633Z | 220.108° SW | 41.754° | 2026-06-22 12:37:24.633Z | 145.234° SSE |
| 4 mins | 2026-06-23 04:04:24.633Z | 158.139° S | 2026-06-23 04:05:24.633Z | 136.991° SSE | 21.53° | 2026-06-23 04:08:24.633Z | 81.083° E |
| 6 mins | 2026-06-23 05:42:24.633Z | 258.462° W | 2026-06-23 05:44:24.633Z | 302.524° NW | 35.576° | 2026-06-23 05:48:24.633Z | 39.501° 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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