STARLINK-35991, 66861
Orbit data source: Space-Track
STARLINK-35991, 66861 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Tue, 02 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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66861 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: 14 hours ago
TLE from 14 hours ago
0 STARLINK-35991
1 66861U 25281P 26171.24654244 .00017609 00000-0 64731-3 0 9990
2 66861 43.0023 123.9964 0001509 270.7332 89.3346 15.27608896 31878Epoch: 2026-06-20T05:55Z
TLE epoch observation values (Epoch: 2026-06-20T05:55:01.266Z)
Latitude
-0.00009°
Longitude
126.77712°
Altitude
482.726 km
Speed
7.626 km/s
True Right ascension
08h 15m 59s
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
07:18:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.943 km
Perigee altitude
483.872 km
Semi-major axis
6,863.044 km
Eccentricity
0.00015
Inclination
43.0023°
RAAN
123.9964°
Arg. of periapsis
270.7332°
True anomaly
89.35189°
Mean anomaly
89.3346°
Eccentric anomaly
89.34325°
Mean motion
3.8174 °/min
Orbital period
94.3 mins
BSTAR
0.00064731
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Other satellites on launch #281 in the year 2025 (2025-12-02 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-35991 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 | 2026-06-20 23:21:24.996Z | 188.177° SSW | 2026-06-20 23:24:24.996Z | 134.297° SE | 17.384° | 2026-06-20 23:26:24.996Z | 100.855° ESE |
| 5 mins | 2026-06-21 01:00:24.996Z | 243.02° WSW | 2026-06-21 01:02:24.996Z | 188.25° SSW | 44.283° | 2026-06-21 01:05:24.996Z | 73.967° E |
| 5 mins | 2026-06-21 02:39:24.996Z | 287.096° WNW | 2026-06-21 02:41:24.996Z | 342.534° N | 37.975° | 2026-06-21 02:44:24.996Z | 70.599° E |
| 6 mins | 2026-06-21 04:18:24.996Z | 292.113° WNW | 2026-06-21 04:20:24.996Z | 324.146° NNW | 42.099° | 2026-06-21 04:24:24.996Z | 100.15° ESE |
| 5 mins | 2026-06-21 05:57:24.996Z | 264.047° W | 2026-06-21 05:59:24.996Z | 217.342° SW | 27.71° | 2026-06-21 06:02:24.996Z | 151.237° 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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