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, Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 3 days ago
TLE from 3 days ago
0 STARLINK-35921
1 66640U 25271Z 26171.31670191 .00015764 00000-0 54281-3 0 9990
2 66640 53.1617 22.9319 0001505 90.7876 269.3297 15.30225677 33283Epoch: 2026-06-20T07:36Z
TLE epoch observation values (Epoch: 2026-06-20T07:36:03.045Z)
Latitude
-0.00002°
Longitude
0.38613°
Altitude
476.051 km
Speed
7.629 km/s
True Right ascension
01h 31m 43s
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
08:51:40
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
476.426 km
Perigee altitude
474.363 km
Semi-major axis
6,853.532 km
Eccentricity
0.00015
Inclination
53.1617°
RAAN
22.9319°
Arg. of periapsis
90.7876°
True anomaly
269.31246°
Mean anomaly
269.3297°
Eccentric anomaly
269.32108°
Mean motion
3.82535 °/min
Orbital period
94.11 mins
BSTAR
0.00054281
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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 | 2026-06-22 22:47:47.960Z | 316.456° NNW | 2026-06-22 22:50:47.960Z | 67.675° E | 42.297° | 2026-06-22 22:53:47.960Z | 121.434° SE |
| 5 mins | 2026-06-23 15:43:47.960Z | 216.978° SW | 2026-06-23 15:45:47.960Z | 156.408° SSE | 43.039° | 2026-06-23 15:48:47.960Z | 55.631° ENE |
| 4 mins | 2026-06-23 17:22:47.960Z | 305.668° NW | 2026-06-23 17:23:47.960Z | 327.139° NNW | 19.297° | 2026-06-23 17:26:47.960Z | 24.362° 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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