STARLINK-35621, 66156
Orbit data source: Space-Track
STARLINK-35621, 66156 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 25 Oct 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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66156 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-35621
1 66156U 25240L 26171.42071867 .00324460 00000-0 10291-1 0 9992
2 66156 53.1605 305.8827 0002310 102.9587 257.1672 15.30843183 37711Epoch: 2026-06-20T10:05Z
TLE epoch observation values (Epoch: 2026-06-20T10:05:50.093Z)
Latitude
-0.00001°
Longitude
-114.21162°
Altitude
474.547 km
Speed
7.63 km/s
True Right ascension
20h 23m 31s
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
07:18:09
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
475.134 km
Perigee altitude
471.969 km
Semi-major axis
6,851.689 km
Eccentricity
0.00023
Inclination
53.1605°
RAAN
305.8827°
Arg. of periapsis
102.9587°
True anomaly
257.14139°
Mean anomaly
257.1672°
Eccentric anomaly
257.1543°
Mean motion
3.8269 °/min
Orbital period
94.07 mins
BSTAR
0.010291
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Other satellites on launch #240 in the year 2025 (2025-10-25 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-35621 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 11:19:24.378Z | 216.79° SW | 2026-06-21 11:23:24.378Z | 98.169° ESE | 39.103° | 2026-06-21 11:26:24.378Z | 56.633° ENE |
| 4 mins | 2026-06-21 12:59:24.378Z | 298.364° NW | 2026-06-21 13:01:24.378Z | 344.282° N | 20.257° | 2026-06-21 13:03:24.378Z | 21.732° NNE |
| 5 mins | 2026-06-21 17:55:24.378Z | 326.534° NNW | 2026-06-21 17:57:24.378Z | 24.253° NE | 37.675° | 2026-06-21 18:00:24.378Z | 109.968° ESE |
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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