STARLINK-36139, 66966
Orbit data source: Space-Track
STARLINK-36139, 66966 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Mon, 08 Dec 2025 UTC via an FALCON 9 launch vehicle from the Air Force Eastern Test Range (AFETR). 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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66966 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 + 2 Pan, 17.7 m
Radar Cross Section
36.964 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 STARLINK-36139
1 66966U 25288H 26177.58274966 .00015801 00000-0 58237-3 0 9991
2 66966 43.0052 128.2760 0002025 296.0266 64.0377 15.27586746 31940Epoch: 2026-06-26T13:59Z
TLE epoch observation values (Epoch: 2026-06-26T13:59:09.570Z)
Latitude
-0.00003°
Longitude
3.77691°
Altitude
482.197 km
Speed
7.627 km/s
True Right ascension
08h 33m 06s
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
08:58:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
486.363 km
Perigee altitude
483.583 km
Semi-major axis
6,863.11 km
Eccentricity
0.0002
Inclination
43.0052°
RAAN
128.276°
Arg. of periapsis
296.0266°
True anomaly
64.05857°
Mean anomaly
64.0377°
Eccentric anomaly
64.04813°
Mean motion
3.81735 °/min
Orbital period
94.31 mins
BSTAR
0.00058237
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Other satellites on launch #288 in the year 2025 (2025-12-08 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-36139 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 | 2026-06-26 23:35:27.238Z | 193.111° SSW | 2026-06-26 23:37:27.238Z | 156.823° SSE | 20.727° | 2026-06-26 23:40:27.238Z | 96.966° ESE |
| 5 mins | 2026-06-27 01:14:27.238Z | 251.215° W | 2026-06-27 01:16:27.238Z | 254.949° W | 44.906° | 2026-06-27 01:19:27.238Z | 71.783° E |
| 5 mins | 2026-06-27 02:53:27.238Z | 289.9° WNW | 2026-06-27 02:55:27.238Z | 344.428° N | 37.626° | 2026-06-27 02:58:27.238Z | 72.435° E |
| 6 mins | 2026-06-27 04:32:27.238Z | 290.173° WNW | 2026-06-27 04:34:27.238Z | 308.029° NW | 43.07° | 2026-06-27 04:38:27.238Z | 105.23° ESE |
| 5 mins | 2026-06-27 06:11:27.238Z | 259.465° W | 2026-06-27 06:13:27.238Z | 215.707° SW | 23.831° | 2026-06-27 06:16:27.238Z | 157.315° SSE |
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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