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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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: 4 hours ago
TLE from 4 hours ago
0 STARLINK-35953
1 66637U 25271W 26037.12438088 .00019982 00000-0 68503-3 0 9991
2 66637 53.1564 286.5711 0000905 91.9151 268.1953 15.30196074 12737Epoch: 2026-02-06T02:59Z
TLE epoch observation values (Epoch: 2026-02-06T02:59:06.508Z)
Latitude
-0.00003°
Longitude
105.5272°
Altitude
476.146 km
Speed
7.629 km/s
True Right ascension
19h 06m 17s
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
09:05:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
476.104 km
Perigee altitude
474.864 km
Semi-major axis
6,853.621 km
Eccentricity
0.00009
Inclination
53.1564°
RAAN
286.5711°
Arg. of periapsis
91.9151°
True anomaly
268.18493°
Mean anomaly
268.1953°
Eccentric anomaly
268.19012°
Mean motion
3.82528 °/min
Orbital period
94.11 mins
BSTAR
0.00068503
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-02-06 18:48:56.055Z | 208.698° SW | 2026-02-06 18:52:56.055Z | 108.43° ESE | 34.307° | 2026-02-06 18:55:56.055Z | 60.939° ENE |
| 4 mins | 2026-02-06 20:28:56.055Z | 293.708° NW | 2026-02-06 20:30:56.055Z | 344.815° N | 22.914° | 2026-02-06 20:32:56.055Z | 23.632° NE |
| 5 mins | 2026-02-07 01:24:56.055Z | 328.658° NNW | 2026-02-07 01:26:56.055Z | 12.578° NNE | 32.479° | 2026-02-07 01:29:56.055Z | 99.953° ESE |
| 4 mins | 2026-02-07 03:03:56.055Z | 258.58° W | 2026-02-07 03:04:56.055Z | 234.753° WSW | 21.331° | 2026-02-07 03:07:56.055Z | 177.55° S |
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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