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: 14 hours ago
TLE from 14 hours ago
0 STARLINK-35921
1 66640U 25271Z 26265.38526951 .00017388 00000-0 52445-3 0 9999
2 66640 53.1601 304.7456 0001320 86.5324 273.5830 15.34406519 47707Epoch: 2026-09-22T09:14Z
TLE epoch observation values (Epoch: 2026-09-22T09:14:47.285Z)
Latitude
0°
Longitude
164.79708°
Altitude
463.529 km
Speed
7.636 km/s
True Right ascension
20h 18m 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
16:25:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
463.844 km
Perigee altitude
462.038 km
Semi-major axis
6,841.078 km
Eccentricity
0.00013
Inclination
53.1601°
RAAN
304.7456°
Arg. of periapsis
86.5324°
True anomaly
273.5679°
Mean anomaly
273.583°
Eccentric anomaly
273.57545°
Mean motion
3.8358 °/min
Orbital period
93.85 mins
BSTAR
0.00052445
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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 | 2026-09-23 05:46:36.387Z | 248.75° W | 2026-09-23 05:48:36.387Z | 317.019° NNW | 59.615° | 2026-09-23 05:51:36.387Z | 41.574° NE |
| 4 mins | 2026-09-23 10:42:36.387Z | 343.858° N | 2026-09-23 10:44:36.387Z | 23.298° NE | 19.623° | 2026-09-23 10:46:36.387Z | 63.265° ENE |
| 5 mins | 2026-09-23 12:20:36.387Z | 304.155° NW | 2026-09-23 12:22:36.387Z | 222.533° SW | 75.936° | 2026-09-23 12:25:36.387Z | 137.362° SSE |
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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