STARLINK-1640, 46173
Orbit data source: Space-Track
STARLINK-1640, 46173 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Tue, 18 Aug 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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46173 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
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: 21 hours ago
TLE from 21 hours ago
0 STARLINK-1640
1 46173U 20057BJ 25337.43097957 .00003119 00000-0 22821-3 0 9991
2 46173 53.0547 28.7396 0001317 92.9295 267.1845 15.06390564291554Epoch: 2025-12-03T10:20Z
TLE epoch observation values (Epoch: 2025-12-03T10:20:36.634Z)
Latitude
-0.00002°
Longitude
161.08507°
Altitude
548.165 km
Speed
7.589 km/s
True Right ascension
01h 54m 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
05:14:57
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.423 km
Perigee altitude
546.599 km
Semi-major axis
6,925.648 km
Eccentricity
0.00013
Inclination
53.0547°
RAAN
28.7396°
Arg. of periapsis
92.9295°
True anomaly
267.16943°
Mean anomaly
267.1845°
Eccentric anomaly
267.17696°
Mean motion
3.76576 °/min
Orbital period
95.6 mins
BSTAR
0.00022821
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Other satellites on launch #57 in the year 2020 (2020-08-18 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-1640 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 | 2025-12-04 12:18:58.409Z | 336.409° NNW | 2025-12-04 12:20:58.409Z | 32.591° NE | 33.315° | 2025-12-04 12:23:58.409Z | 98.768° ESE |
| 5 mins | 2025-12-04 13:57:58.409Z | 279.388° WNW | 2025-12-04 13:59:58.409Z | 240.489° WSW | 25.638° | 2025-12-04 14:02:58.409Z | 176.691° S |
| 6 mins | 2025-12-05 05:30:58.409Z | 201.673° SSW | 2025-12-05 05:32:58.409Z | 150.699° SSE | 37.519° | 2025-12-05 05:36:58.409Z | 60.028° ENE |
| 5 mins | 2025-12-05 07:10:58.409Z | 288.775° WNW | 2025-12-05 07:12:58.409Z | 333.786° NNW | 25.431° | 2025-12-05 07:15:58.409Z | 29.297° 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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