STARLINK-3546, 51718
Orbit data source: Space-Track
STARLINK-3546, 51718 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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51718 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-3546
1 51718U 22016E 26171.40287456 .00017722 00000-0 82667-3 0 9997
2 51718 53.2091 218.9906 0001727 302.9970 57.0861 15.19947096240189Epoch: 2026-06-20T09:40Z
TLE epoch observation values (Epoch: 2026-06-20T09:40:08.361Z)
Latitude
-0.00003°
Longitude
165.33773°
Altitude
506.255 km
Speed
7.613 km/s
True Right ascension
14h 35m 57s
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
21:31:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
507.437 km
Perigee altitude
505.059 km
Semi-major axis
6,884.385 km
Eccentricity
0.00017
Inclination
53.2091°
RAAN
218.9906°
Arg. of periapsis
302.997°
True anomaly
57.10272°
Mean anomaly
57.0861°
Eccentric anomaly
57.09441°
Mean motion
3.79967 °/min
Orbital period
94.75 mins
BSTAR
0.00082667
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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-3546 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-22 11:02:57.584Z | 336.155° NNW | 2026-06-22 11:05:57.584Z | 38.622° NE | 22.731° | 2026-06-22 11:07:57.584Z | 76.315° E |
| 6 mins | 2026-06-22 12:41:57.584Z | 294.974° NW | 2026-06-22 12:43:57.584Z | 247.149° WSW | 38.099° | 2026-06-22 12:47:57.584Z | 147.529° SSE |
| 4 mins | 2026-06-23 04:06:57.584Z | 162.28° S | 2026-06-23 04:08:57.584Z | 118.945° SE | 20.104° | 2026-06-23 04:10:57.584Z | 83.665° E |
| 5 mins | 2026-06-23 05:44:57.584Z | 263.012° W | 2026-06-23 05:46:57.584Z | 329.449° NNW | 36.253° | 2026-06-23 05:49:57.584Z | 37.317° 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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