STARLINK-3617, 51780
Orbit data source: Space-Track
STARLINK-3617, 51780 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Fri, 25 Feb 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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51780 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-3617
1 51780U 22017N 26171.44754032 -.00001737 00000-0 -91129-4 0 9995
2 51780 53.1579 237.6958 0000896 73.8205 286.2885 15.08814319237934Epoch: 2026-06-20T10:44Z
TLE epoch observation values (Epoch: 2026-06-20T10:44:27.483Z)
Latitude
-0.00003°
Longitude
167.91924°
Altitude
540.539 km
Speed
7.593 km/s
True Right ascension
15h 50m 46s
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
00:39:37
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
540.696 km
Perigee altitude
539.456 km
Semi-major axis
6,918.213 km
Eccentricity
0.00009
Inclination
53.1579°
RAAN
237.6958°
Arg. of periapsis
73.8205°
True anomaly
286.27864°
Mean anomaly
286.2885°
Eccentric anomaly
286.28357°
Mean motion
3.77183 °/min
Orbital period
95.44 mins
BSTAR
-0.000091129
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Other satellites on launch #17 in the year 2022 (2022-02-25 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-3617 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 14:08:05.941Z | 296.798° NW | 2026-06-22 14:12:05.941Z | 211.82° SW | 33.374° | 2026-06-22 14:15:05.941Z | 157.831° S |
| 5 mins | 2026-06-23 05:41:05.941Z | 181.71° SSW | 2026-06-23 05:43:05.941Z | 131.304° SE | 29.364° | 2026-06-23 05:46:05.941Z | 71.04° E |
| 6 mins | 2026-06-23 07:20:05.941Z | 273.148° WNW | 2026-06-23 07:22:05.941Z | 318.333° NNW | 30.038° | 2026-06-23 07:26:05.941Z | 36.594° NE |
| 6 mins | 2026-06-23 12:21:05.941Z | 330.983° NNW | 2026-06-23 12:24:05.941Z | 45.271° ENE | 30.749° | 2026-06-23 12:27:05.941Z | 98.234° ESE |
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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