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: 20 hours ago
TLE from 20 hours ago
0 STARLINK-35921
1 66640U 25271Z 26218.14740036 .00008088 00000-0 28495-3 0 9998
2 66640 53.1566 165.4053 0001312 80.3196 279.7953 15.30194271 40456Epoch: 2026-08-06T03:32Z
TLE epoch observation values (Epoch: 2026-08-06T03:32:15.391Z)
Latitude
0.00001°
Longitude
157.64955°
Altitude
475.979 km
Speed
7.629 km/s
True Right ascension
11h 01m 37s
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
13:48:44
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
476.388 km
Perigee altitude
474.59 km
Semi-major axis
6,853.626 km
Eccentricity
0.00013
Inclination
53.1566°
RAAN
165.4053°
Arg. of periapsis
80.3196°
True anomaly
279.78048°
Mean anomaly
279.7953°
Eccentric anomaly
279.78789°
Mean motion
3.82527 °/min
Orbital period
94.11 mins
BSTAR
0.00028495
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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 | 2026-08-07 00:08:07.294Z | 266.464° W | 2026-08-07 00:11:07.294Z | 335.355° NNW | 28.571° | 2026-08-07 00:14:07.294Z | 33.735° NE |
| 5 mins | 2026-08-07 05:06:07.294Z | 343.501° N | 2026-08-07 05:08:07.294Z | 39.304° NE | 27.06° | 2026-08-07 05:11:07.294Z | 94.544° ESE |
| 4 mins | 2026-08-07 06:44:07.294Z | 275.314° WNW | 2026-08-07 06:46:07.294Z | 214.325° SW | 28.688° | 2026-08-07 06:48:07.294Z | 169.851° S |
| 4 mins | 2026-08-07 22:02:07.294Z | 168.438° S | 2026-08-07 22:03:07.294Z | 144.983° SSE | 23.253° | 2026-08-07 22:06:07.294Z | 78.385° E |
| 5 mins | 2026-08-07 23:39:07.294Z | 267.151° W | 2026-08-07 23:41:07.294Z | 315.619° NNW | 30.909° | 2026-08-07 23:44:07.294Z | 31.839° 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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