STARLINK-35554, 66239
Orbit data source: Space-Track
STARLINK-35554, 66239 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Wed, 29 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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66239 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: 15 hours ago
TLE from 15 hours ago
0 STARLINK-35554
1 66239U 25245F 26171.27176757 .00010121 00000-0 33732-3 0 9999
2 66239 53.1579 167.3197 0001188 89.3111 270.8027 15.31714914 36802Epoch: 2026-06-20T06:31Z
TLE epoch observation values (Epoch: 2026-06-20T06:31:20.718Z)
Latitude
0.00004°
Longitude
160.99462°
Altitude
471.584 km
Speed
7.631 km/s
True Right ascension
11h 09m 16s
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
08:32:28
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
471.766 km
Perigee altitude
470.139 km
Semi-major axis
6,849.089 km
Eccentricity
0.00012
Inclination
53.1579°
RAAN
167.3197°
Arg. of periapsis
89.3111°
True anomaly
270.78909°
Mean anomaly
270.8027°
Eccentric anomaly
270.79589°
Mean motion
3.82908 °/min
Orbital period
94.02 mins
BSTAR
0.00033732
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Other satellites on launch #245 in the year 2025 (2025-10-29 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-35554 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 | 2026-06-21 01:28:30.407Z | 172.266° S | 2026-06-21 01:30:30.407Z | 130.576° SE | 20.712° | 2026-06-21 01:32:30.407Z | 88.135° E |
| 5 mins | 2026-06-21 03:06:30.407Z | 269.775° W | 2026-06-21 03:08:30.407Z | 343.468° N | 33.296° | 2026-06-21 03:11:30.407Z | 38.236° NE |
| 4 mins | 2026-06-21 08:03:30.407Z | 356.032° N | 2026-06-21 08:04:30.407Z | 21.001° NNE | 22.675° | 2026-06-21 08:07:30.407Z | 82.146° E |
| 5 mins | 2026-06-21 09:40:30.407Z | 291.874° WNW | 2026-06-21 09:42:30.407Z | 236.853° WSW | 36.413° | 2026-06-21 09:45:30.407Z | 153.451° 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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