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: 16 hours ago
TLE from 16 hours ago
0 STARLINK-1640
1 46173U 20057BJ 25287.20635814 .00000508 00000-0 52951-4 0 9997
2 46173 53.0546 254.2083 0001349 97.6338 262.4805 15.06408620283982Epoch: 2025-10-14T04:57Z
TLE epoch observation values (Epoch: 2025-10-14T04:57:09.343Z)
Latitude
0.00005°
Longitude
156.9213°
Altitude
548.187 km
Speed
7.589 km/s
True Right ascension
16h 56m 50s
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
15:27:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
548.39 km
Perigee altitude
546.522 km
Semi-major axis
6,925.593 km
Eccentricity
0.00013
Inclination
53.0546°
RAAN
254.2083°
Arg. of periapsis
97.6338°
True anomaly
262.46517°
Mean anomaly
262.4805°
Eccentric anomaly
262.47284°
Mean motion
3.7658 °/min
Orbital period
95.6 mins
BSTAR
0.000052951
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-15 00:13:37.366Z | 208.913° SW | 2025-10-15 00:16:37.366Z | 143.715° SSE | 38.606° | 2025-10-15 00:20:37.366Z | 58.932° ENE |
| 5 mins | 2025-10-15 01:54:37.366Z | 291.562° WNW | 2025-10-15 01:56:37.366Z | 337.405° NNW | 24.94° | 2025-10-15 01:59:37.366Z | 30.194° NE |
| 4 mins | 2025-10-15 05:16:37.366Z | 352.096° N | 2025-10-15 05:17:37.366Z | 9.231° NNE | 16.044° | 2025-10-15 05:20:37.366Z | 56.802° ENE |
| 6 mins | 2025-10-15 06:55:37.366Z | 323.437° NNW | 2025-10-15 06:58:37.366Z | 59.476° ENE | 38.251° | 2025-10-15 07:01:37.366Z | 111.928° ESE |
| 4 mins | 2025-10-15 08:35:37.366Z | 266.308° W | 2025-10-15 08:37:37.366Z | 228.277° WSW | 19.584° | 2025-10-15 08:39:37.366Z | 192.672° SSW |
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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