STARLINK-35921, 66640
Orbit data source: Space-Track
STARLINK-35921, 66640 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 23 Nov 2025 UTC via an FALCON 9 launch vehicle from the Air Force Western Test Range (AFWTR). 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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66640 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
SpaceX/Seattle
Mission
Operational Commercial Communications
Bus & Motor
STARLINK V2MO, Unknown motor
Mass
575 kg wet, ~530 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 1 Pan, 17.7 m
Radar Cross Section
41.120 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 STARLINK-35921
1 66640U 25271Z 26313.06484288 .00048971 00000-0 14503-2 0 9998
2 66640 53.1561 81.8534 0003164 83.2272 276.9091 15.34413788 55022Epoch: 2026-11-09T01:33Z
TLE epoch observation values (Epoch: 2026-11-09T01:33:22.424Z)
Latitude
0°
Longitude
10.26322°
Altitude
463.304 km
Speed
7.636 km/s
True Right ascension
05h 27m 24s
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
13:54:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
465.084 km
Perigee altitude
460.755 km
Semi-major axis
6,841.057 km
Eccentricity
0.00032
Inclination
53.1561°
RAAN
81.8534°
Arg. of periapsis
83.2272°
True anomaly
276.8731°
Mean anomaly
276.9091°
Eccentric anomaly
276.8911°
Mean motion
3.83582 °/min
Orbital period
93.85 mins
BSTAR
0.0014503
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Other satellites on launch #271 in the year 2025 (2025-11-23 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-35921 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 | 2026-11-09 17:39:41.081Z | 326.22° NNW | 2026-11-09 17:42:41.081Z | 36.873° NE | 37.958° | 2026-11-09 17:45:41.081Z | 101.315° ESE |
| 4 mins | 2026-11-09 19:18:41.081Z | 264.682° W | 2026-11-09 19:19:41.081Z | 240.965° WSW | 24.333° | 2026-11-09 19:22:41.081Z | 176.923° S |
| 4 mins | 2026-11-10 10:33:41.081Z | 178.715° S | 2026-11-10 10:35:41.081Z | 115.697° SE | 32.075° | 2026-11-10 10:37:41.081Z | 73.879° E |
| 5 mins | 2026-11-10 12:10:41.081Z | 275.991° WNW | 2026-11-10 12:12:41.081Z | 323.503° NNW | 30.428° | 2026-11-10 12:15:41.081Z | 29.929° NE |
| 5 mins | 2026-11-10 17:06:41.081Z | 336.019° NNW | 2026-11-10 17:08:41.081Z | 22.731° NE | 31.231° | 2026-11-10 17:11:41.081Z | 91.865° ESE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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