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: 20 hours ago
TLE from 20 hours ago
0 STARLINK-35921
1 66640U 25271Z 26127.68642498 .00027378 00000-0 93200-3 0 9998
2 66640 53.1572 225.5895 0001063 101.4278 258.6843 15.30237967 26609Epoch: 2026-05-07T16:28Z
TLE epoch observation values (Epoch: 2026-05-07T16:28:27.118Z)
Latitude
0.00006°
Longitude
112.94755°
Altitude
476.144 km
Speed
7.629 km/s
True Right ascension
15h 02m 21s
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
20:50:16
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
476.087 km
Perigee altitude
474.63 km
Semi-major axis
6,853.496 km
Eccentricity
0.00011
Inclination
53.1572°
RAAN
225.5895°
Arg. of periapsis
101.4278°
True anomaly
258.67236°
Mean anomaly
258.6843°
Eccentric anomaly
258.67833°
Mean motion
3.82538 °/min
Orbital period
94.11 mins
BSTAR
0.000932
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-05-08 14:53:18.120Z | 341.591° N | 2026-05-08 14:55:18.120Z | 27.043° NE | 23.657° | 2026-05-08 14:58:18.120Z | 85.403° E |
| 5 mins | 2026-05-08 16:31:18.120Z | 288.823° WNW | 2026-05-08 16:33:18.120Z | 229.174° WSW | 35.402° | 2026-05-08 16:36:18.120Z | 154.886° SSE |
| 6 mins | 2026-05-09 09:26:18.120Z | 255.497° W | 2026-05-09 09:29:18.120Z | 350.944° N | 34.69° | 2026-05-09 09:32:18.120Z | 40.111° NE |
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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