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: 7 hours ago
TLE from 7 hours ago
0 STARLINK-1640
1 46173U 20057BJ 26021.50002314 .00008863 00000-0 22608-3 0 9997
2 46173 53.0541 164.7200 0001709 339.7047 349.3463 15.40321221 5773Epoch: 2026-01-21T12:00Z
TLE epoch observation values (Epoch: 2026-01-21T12:00:01.999Z)
Latitude
-24.46715°
Longitude
-156.05142°
Altitude
451.086 km
Speed
7.642 km/s
True Right ascension
09h 39m 17s
True Declination
-24° 19' 55"
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
19:40:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
446.601 km
Perigee altitude
444.269 km
Semi-major axis
6,823.572 km
Eccentricity
0.00017
Inclination
53.0541°
RAAN
164.72°
Arg. of periapsis
339.7047°
True anomaly
349.34268°
Mean anomaly
349.3463°
Eccentric anomaly
349.34449°
Mean motion
3.85057 °/min
Orbital period
93.49 mins
BSTAR
0.00022608
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-01-21 18:50:59.998Z | 318.386° NNW | 2026-01-21 18:53:59.998Z | 46.573° ENE | 40.244° | 2026-01-21 18:56:59.998Z | 116.321° SE |
| 4 mins | 2026-01-22 11:40:59.998Z | 193.536° SSW | 2026-01-22 11:41:59.998Z | 161.411° S | 35.069° | 2026-01-22 11:44:59.998Z | 64.672° ENE |
| 4 mins | 2026-01-22 13:17:59.998Z | 289.766° WNW | 2026-01-22 13:19:59.998Z | 337.16° NNW | 21.785° | 2026-01-22 13:21:59.998Z | 20.174° NNE |
| 5 mins | 2026-01-22 18:12:59.998Z | 336.76° NNW | 2026-01-22 18:14:59.998Z | 49.314° ENE | 32.805° | 2026-01-22 18:17:59.998Z | 106.212° ESE |
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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