STARLINK-35729, 66837
Orbit data source: Space-Track
STARLINK-35729, 66837 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 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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66837 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-35729
1 66837U 25280S 26171.44984860 .00002112 00000-0 18473-3 0 9999
2 66837 70.0015 75.5550 0002367 266.0059 94.0829 14.98336256 31461Epoch: 2026-06-20T10:47Z
TLE epoch observation values (Epoch: 2026-06-20T10:47:46.919Z)
Latitude
-0.00005°
Longitude
4.94518°
Altitude
574.578 km
Speed
7.574 km/s
True Right ascension
05h 02m 13s
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
07:17:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
571.629 km
Perigee altitude
568.34 km
Semi-major axis
6,948.122 km
Eccentricity
0.00024
Inclination
70.0015°
RAAN
75.555°
Arg. of periapsis
266.0059°
True anomaly
94.10995°
Mean anomaly
94.0829°
Eccentric anomaly
94.09643°
Mean motion
3.7475 °/min
Orbital period
96.06 mins
BSTAR
0.00018473
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Other satellites on launch #280 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-35729 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-21 04:59:11.537Z | 324.341° NNW | 2026-06-21 05:02:11.537Z | 242.337° WSW | 40.869° | 2026-06-21 05:06:11.537Z | 169.265° S |
| 6 mins | 2026-06-21 18:59:11.537Z | 205.609° SW | 2026-06-21 19:02:11.537Z | 1.062° NNE | 44.497° | 2026-06-21 19:05:11.537Z | 22.975° 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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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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