STARLINK-35908, 66639
Orbit data source: Space-Track
STARLINK-35908, 66639 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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66639 intel report (Beta)
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Edit Public Description
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: 5 hours ago
TLE from 5 hours ago
0 STARLINK-35908
1 66639U 25271Y 25355.50002315 .00013718 00000-0 35238-3 0 9997
2 66639 53.1604 145.3858 0001430 84.1101 270.4668 15.39614337 5659Epoch: 2025-12-21T12:00Z
TLE epoch observation values (Epoch: 2025-12-21T12:00:02.000Z)
Latitude
-4.45819°
Longitude
-128.26413°
Altitude
448.831 km
Speed
7.644 km/s
True Right ascension
09h 28m 13s
True Declination
-4° 25' 49"
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
15:47:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
448.482 km
Perigee altitude
446.53 km
Semi-major axis
6,825.643 km
Eccentricity
0.00014
Inclination
53.1604°
RAAN
145.3858°
Arg. of periapsis
84.1101°
True anomaly
270.45041°
Mean anomaly
270.4668°
Eccentric anomaly
270.45861°
Mean motion
3.84882 °/min
Orbital period
93.54 mins
BSTAR
0.00035238
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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-35908 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 | 2025-12-21 18:42:28.931Z | 333.888° NNW | 2025-12-21 18:45:28.931Z | 35.59° NE | 21.145° | 2025-12-21 18:47:28.931Z | 75.905° E |
| 5 mins | 2025-12-21 20:20:28.931Z | 293.333° NW | 2025-12-21 20:22:28.931Z | 235.45° WSW | 37.219° | 2025-12-21 20:25:28.931Z | 151.025° SSE |
| 5 mins | 2025-12-22 13:09:28.931Z | 248.416° W | 2025-12-22 13:11:28.931Z | 306.617° NW | 39.942° | 2025-12-22 13:14:28.931Z | 40.996° NE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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