STARLINK-35439, 66431
Orbit data source: Space-Track
STARLINK-35439, 66431 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Tue, 11 Nov 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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66431 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-35439
1 66431U 25259K 26150.09430198 .00023626 00000-0 86551-3 0 9998
2 66431 42.9993 174.3961 0000793 254.7600 105.3164 15.27572198 31946Epoch: 2026-05-30T02:15Z
TLE epoch observation values (Epoch: 2026-05-30T02:15:47.691Z)
Latitude
0°
Longitude
-107.16788°
Altitude
482.992 km
Speed
7.626 km/s
True Right ascension
11h 37m 35s
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
02:07:45
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.562 km
Perigee altitude
484.473 km
Semi-major axis
6,863.155 km
Eccentricity
0.00008
Inclination
42.9993°
RAAN
174.3961°
Arg. of periapsis
254.76°
True anomaly
105.32516°
Mean anomaly
105.3164°
Eccentric anomaly
105.32078°
Mean motion
3.81731 °/min
Orbital period
94.31 mins
BSTAR
0.00086551
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Other satellites on launch #259 in the year 2025 (2025-11-11 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-35439 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-05-31 05:10:24.657Z | 228.508° WSW | 2026-05-31 05:12:24.657Z | 189.164° SSW | 37.794° | 2026-05-31 05:16:24.657Z | 77.049° E |
| 6 mins | 2026-05-31 06:49:24.657Z | 277.633° WNW | 2026-05-31 06:51:24.657Z | 318.207° NNW | 38.082° | 2026-05-31 06:55:24.657Z | 71.438° E |
| 6 mins | 2026-05-31 08:28:24.657Z | 292.397° WNW | 2026-05-31 08:31:24.657Z | 36.645° NE | 40.282° | 2026-05-31 08:34:24.657Z | 90.387° ESE |
| 5 mins | 2026-05-31 10:08:24.657Z | 264.972° W | 2026-05-31 10:10:24.657Z | 186.28° SSW | 35.1° | 2026-05-31 10:13:24.657Z | 133.88° SE |
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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