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 + 2 Pan, 17.7 m
Radar Cross Section
36.964 m²
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 STARLINK-35921
1 66640U 25271Z 26082.22735872 .00017037 00000-0 58629-3 0 9994
2 66640 53.1592 76.7439 0001395 91.8663 268.2498 15.30185270 19647Epoch: 2026-03-23T05:27Z
TLE epoch observation values (Epoch: 2026-03-23T05:27:23.793Z)
Latitude
0.00002°
Longitude
174.17239°
Altitude
476.188 km
Speed
7.629 km/s
True Right ascension
05h 06m 58s
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
22:48:36
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
476.472 km
Perigee altitude
474.56 km
Semi-major axis
6,853.653 km
Eccentricity
0.00014
Inclination
53.1592°
RAAN
76.7439°
Arg. of periapsis
91.8663°
True anomaly
268.23382°
Mean anomaly
268.2498°
Eccentric anomaly
268.24181°
Mean motion
3.82525 °/min
Orbital period
94.11 mins
BSTAR
0.00058629
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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 | 2026-03-24 02:00:10.291Z | 216.404° SW | 2026-03-24 02:03:10.291Z | 153.492° SSE | 41.247° | 2026-03-24 02:06:10.291Z | 58.233° ENE |
| 4 mins | 2026-03-24 03:40:10.291Z | 303.661° NW | 2026-03-24 03:41:10.291Z | 325.928° NNW | 20.308° | 2026-03-24 03:44:10.291Z | 24.749° NE |
| 5 mins | 2026-03-24 08:36:10.291Z | 325.83° NNW | 2026-03-24 08:38:10.291Z | 23.219° NE | 38.241° | 2026-03-24 08:41:10.291Z | 110.793° 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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