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, 4.4 m
Radar Cross Section
13.562 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 STARLINK-1821
1 46718U 20073BA 25258.16521778 .00014044 00000-0 70318-3 0 9992
2 46718 53.0542 319.6779 0003858 300.9233 59.1381 15.17654854270533Epoch: 2025-09-15T03:57Z
TLE epoch observation values (Epoch: 2025-09-15T03:57:54.816Z)
Latitude
-0.00004°
Longitude
-94.17432°
Altitude
512.451 km
Speed
7.61 km/s
True Right ascension
21h 18m 42s
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
04:15:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
515.861 km
Perigee altitude
510.544 km
Semi-major axis
6,891.339 km
Eccentricity
0.00039
Inclination
53.0542°
RAAN
319.6779°
Arg. of periapsis
300.9233°
True anomaly
59.17606°
Mean anomaly
59.1381°
Eccentric anomaly
59.15708°
Mean motion
3.79392 °/min
Orbital period
94.89 mins
BSTAR
0.00070318
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-09-15 12:19:10.599Z | 343.754° N | 2025-09-15 12:21:10.599Z | 21.868° NNE | 19.487° | 2025-09-15 12:24:10.599Z | 72.537° E |
| 6 mins | 2025-09-15 13:58:10.599Z | 307.598° NW | 2025-09-15 14:00:10.599Z | 280.843° WNW | 44.459° | 2025-09-15 14:04:10.599Z | 133.229° SE |
| 6 mins | 2025-09-16 07:02:10.599Z | 240.92° WSW | 2025-09-16 07:04:10.599Z | 281.015° WNW | 42.35° | 2025-09-16 07:08:10.599Z | 46.282° ENE |
| 4 mins | 2025-09-16 08:42:10.599Z | 310.098° NW | 2025-09-16 08:44:10.599Z | 347.446° N | 16.909° | 2025-09-16 08:46:10.599Z | 20.551° NNE |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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