STARLINK-35866, 66878
Orbit data source: Space-Track
STARLINK-35866, 66878 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Thu, 04 Dec 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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66878 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: 10 hours ago
TLE from 10 hours ago
0 STARLINK-35866
1 66878U 25283A 26171.41698760 .00011050 00000-0 38433-3 0 9994
2 66878 53.1575 266.9065 0001026 94.7520 265.3598 15.30226870 31571Epoch: 2026-06-20T10:00Z
TLE epoch observation values (Epoch: 2026-06-20T10:00:27.728Z)
Latitude
-0.00002°
Longitude
-151.84096°
Altitude
476.091 km
Speed
7.629 km/s
True Right ascension
17h 47m 37s
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
07:15:04
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
476.095 km
Perigee altitude
474.689 km
Semi-major axis
6,853.529 km
Eccentricity
0.0001
Inclination
53.1575°
RAAN
266.9065°
Arg. of periapsis
94.752°
True anomaly
265.34808°
Mean anomaly
265.3598°
Eccentric anomaly
265.35394°
Mean motion
3.82536 °/min
Orbital period
94.11 mins
BSTAR
0.00038433
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Other satellites on launch #283 in the year 2025 (2025-12-04 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-35866 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 | 2026-06-21 08:06:20.010Z | 182.106° SSW | 2026-06-21 08:09:20.010Z | 120.652° SE | 21.981° | 2026-06-21 08:11:20.010Z | 81.762° E |
| 5 mins | 2026-06-21 09:44:20.010Z | 263.071° W | 2026-06-21 09:46:20.010Z | 308.64° NW | 31.934° | 2026-06-21 09:49:20.010Z | 31.976° NE |
| 4 mins | 2026-06-21 14:42:20.010Z | 354.283° N | 2026-06-21 14:43:20.010Z | 19.631° NNE | 23.763° | 2026-06-21 14:46:20.010Z | 83.54° E |
| 5 mins | 2026-06-21 16:19:20.010Z | 290.555° WNW | 2026-06-21 16:21:20.010Z | 241.989° WSW | 34.16° | 2026-06-21 16:24:20.010Z | 157.57° 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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