STARLINK-35953, 66637
Orbit data source: Space-Track
STARLINK-35953, 66637 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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66637 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: 11 hours ago
TLE from 11 hours ago
0 STARLINK-35953
1 66637U 25271W 26265.51716656 .00017132 00000-0 51689-3 0 9999
2 66637 53.1608 300.5991 0000831 116.4097 243.6991 15.34408242 47772Epoch: 2026-09-22T12:24Z
TLE epoch observation values (Epoch: 2026-09-22T12:24:43.190Z)
Latitude
-0.00003°
Longitude
113.03761°
Altitude
463.832 km
Speed
7.636 km/s
True Right ascension
20h 02m 23s
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
16:26:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
463.504 km
Perigee altitude
462.367 km
Semi-major axis
6,841.073 km
Eccentricity
0.00008
Inclination
53.1608°
RAAN
300.5991°
Arg. of periapsis
116.4097°
True anomaly
243.69056°
Mean anomaly
243.6991°
Eccentric anomaly
243.69483°
Mean motion
3.83581 °/min
Orbital period
93.85 mins
BSTAR
0.00051689
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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-35953 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 04:11:41.113Z | 179.101° S | 2026-09-23 04:14:41.113Z | 119.382° SE | 21.48° | 2026-09-23 04:16:41.113Z | 82.402° E |
| 5 mins | 2026-09-23 05:49:41.113Z | 264.016° W | 2026-09-23 05:51:41.113Z | 324.189° NNW | 42.493° | 2026-09-23 05:54:41.113Z | 35.864° NE |
| 4 mins | 2026-09-23 10:46:41.113Z | 359.374° N | 2026-09-23 10:47:41.113Z | 24.748° NE | 24.017° | 2026-09-23 10:50:41.113Z | 82.588° E |
| 5 mins | 2026-09-23 12:23:41.113Z | 290.351° WNW | 2026-09-23 12:25:41.113Z | 217.793° SW | 50.216° | 2026-09-23 12:28:41.113Z | 150.287° SSE |
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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