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: 5 hours ago
TLE from 5 hours ago
0 STARLINK-35953
1 66637U 25271W 25355.50002315 .00014270 00000-0 36615-3 0 9999
2 66637 53.1595 145.5400 0001171 93.5910 183.7385 15.39613431 5651Epoch: 2025-12-21T12:00Z
TLE epoch observation values (Epoch: 2025-12-21T12:00:02.000Z)
Latitude
-52.69551°
Longitude
157.2986°
Altitude
466.352 km
Speed
7.632 km/s
True Right ascension
04h 30m 28s
True Declination
-52° 31' 21"
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
15:47:01
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
448.308 km
Perigee altitude
446.71 km
Semi-major axis
6,825.646 km
Eccentricity
0.00012
Inclination
53.1595°
RAAN
145.54°
Arg. of periapsis
93.591°
True anomaly
183.73763°
Mean anomaly
183.7385°
Eccentric anomaly
183.73806°
Mean motion
3.84882 °/min
Orbital period
93.54 mins
BSTAR
0.00036615
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-12-21 19:04:28.675Z | 343.833° N | 2025-12-21 19:06:28.675Z | 43.019° NE | 26.731° | 2025-12-21 19:08:28.675Z | 87.778° E |
| 5 mins | 2025-12-21 20:41:28.675Z | 278.635° WNW | 2025-12-21 20:43:28.675Z | 225.158° WSW | 27.049° | 2025-12-21 20:46:28.675Z | 164.757° S |
| 5 mins | 2025-12-22 13:30:28.675Z | 266.325° W | 2025-12-22 13:32:28.675Z | 322.493° NNW | 31.805° | 2025-12-22 13:35:28.675Z | 34.596° 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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