STARLINK-1821, 46718
Orbit data source: Space-Track
STARLINK-1821, 46718 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 18 Oct 2020 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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46718 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Partially operational Commercial Communications
Bus & Motor
STARLINK, Unknown motor
Mass
260 kg wet, ~248 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: 11 hours ago
TLE from 11 hours ago
0 STARLINK-1821
1 46718U 20073BA 25341.90507341 .00077418 00000-0 29776-2 0 9992
2 46718 53.0525 294.7649 0003149 80.7798 279.3556 15.25728407283286Epoch: 2025-12-07T21:43Z
TLE epoch observation values (Epoch: 2025-12-07T21:43:18.342Z)
Latitude
0.00001°
Longitude
-107.97327°
Altitude
489.135 km
Speed
7.622 km/s
True Right ascension
19h 39m 03s
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
06:50:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
491.035 km
Perigee altitude
486.71 km
Semi-major axis
6,867.009 km
Eccentricity
0.00031
Inclination
53.0525°
RAAN
294.7649°
Arg. of periapsis
80.7798°
True anomaly
279.31999°
Mean anomaly
279.3556°
Eccentric anomaly
279.3378°
Mean motion
3.8141 °/min
Orbital period
94.39 mins
BSTAR
0.0029776
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Other satellites on launch #73 in the year 2020 (2020-10-18 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-1821 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 | 2025-12-08 23:01:55.580Z | 199.901° SSW | 2025-12-08 23:04:55.580Z | 137.013° SSE | 31.606° | 2025-12-08 23:07:55.580Z | 68.213° E |
| 4 mins | 2025-12-09 00:41:55.580Z | 293.082° NW | 2025-12-09 00:42:55.580Z | 319.768° NNW | 26.115° | 2025-12-09 00:45:55.580Z | 27.801° NE |
| 5 mins | 2025-12-09 05:38:55.580Z | 334.545° NNW | 2025-12-09 05:40:55.580Z | 27.551° NE | 31.42° | 2025-12-09 05:43:55.580Z | 98.012° ESE |
| 4 mins | 2025-12-09 07:17:55.580Z | 261.076° W | 2025-12-09 07:18:55.580Z | 234.984° WSW | 24.492° | 2025-12-09 07:21:55.580Z | 173.277° S |
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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