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
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 STARLINK-36139
1 66966U 25288H 26130.11219660 .00009016 00000-0 33675-3 0 9999
2 66966 43.0047 36.3595 0001487 268.9880 91.0801 15.27580454 24685Epoch: 2026-05-10T02:41Z
TLE epoch observation values (Epoch: 2026-05-10T02:41:33.786Z)
Latitude
-0.00003°
Longitude
128.04874°
Altitude
482.843 km
Speed
7.626 km/s
True Right ascension
02h 25m 26s
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
20:35:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
486.013 km
Perigee altitude
483.972 km
Semi-major axis
6,863.129 km
Eccentricity
0.00015
Inclination
43.0047°
RAAN
36.3595°
Arg. of periapsis
268.988°
True anomaly
91.09714°
Mean anomaly
91.0801°
Eccentric anomaly
91.08862°
Mean motion
3.81733 °/min
Orbital period
94.31 mins
BSTAR
0.00033675
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2026-05-10 20:08:10.244Z | 180.935° SSW | 2026-05-10 20:10:10.244Z | 146.304° SSE | 16.363° | 2026-05-10 20:12:10.244Z | 109.519° ESE |
| 6 mins | 2026-05-10 21:46:10.244Z | 241.295° WSW | 2026-05-10 21:49:10.244Z | 113.546° SE | 42.845° | 2026-05-10 21:52:10.244Z | 74.21° E |
| 5 mins | 2026-05-10 23:26:10.244Z | 290.515° WNW | 2026-05-10 23:28:10.244Z | 11.887° NNE | 38.105° | 2026-05-10 23:31:10.244Z | 72.26° E |
| 5 mins | 2026-05-11 01:05:10.244Z | 294.871° NW | 2026-05-11 01:07:10.244Z | 19.055° NNE | 43.234° | 2026-05-11 01:10:10.244Z | 96.941° ESE |
| 5 mins | 2026-05-11 02:44:10.244Z | 259.92° W | 2026-05-11 02:46:10.244Z | 201.774° SSW | 29.308° | 2026-05-11 02:49:10.244Z | 145.305° 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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