STARLINK-35691, 66404
Orbit data source: Space-Track
STARLINK-35691, 66404 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sat, 08 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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66404 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-35691
1 66404U 25257AA 26171.21176138 .00024821 00000-0 74283-3 0 9991
2 66404 53.1582 99.1463 0000885 84.1844 275.9260 15.34420162 35454Epoch: 2026-06-20T05:04Z
TLE epoch observation values (Epoch: 2026-06-20T05:04:56.183Z)
Latitude
0.00003°
Longitude
114.4826°
Altitude
463.482 km
Speed
7.636 km/s
True Right ascension
06h 36m 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
07:16:24
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
463.506 km
Perigee altitude
462.295 km
Semi-major axis
6,841.037 km
Eccentricity
0.00009
Inclination
53.1582°
RAAN
99.1463°
Arg. of periapsis
84.1844°
True anomaly
275.91591°
Mean anomaly
275.926°
Eccentric anomaly
275.92096°
Mean motion
3.83584 °/min
Orbital period
93.85 mins
BSTAR
0.00074283
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Other satellites on launch #257 in the year 2025 (2025-11-08 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-35691 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 | 2026-06-20 20:52:39.388Z | 162.661° S | 2026-06-20 20:54:39.388Z | 120.909° SE | 17.779° | 2026-06-20 20:56:39.388Z | 85.259° E |
| 5 mins | 2026-06-20 22:29:39.388Z | 258.647° W | 2026-06-20 22:31:39.388Z | 323.039° NNW | 36.587° | 2026-06-20 22:34:39.388Z | 38.123° NE |
| 4 mins | 2026-06-21 03:25:39.388Z | 342.807° N | 2026-06-21 03:27:39.388Z | 25.286° NE | 20.774° | 2026-06-21 03:29:39.388Z | 68.542° E |
| 5 mins | 2026-06-21 05:03:39.388Z | 294.292° NW | 2026-06-21 05:05:39.388Z | 214.24° SW | 39.995° | 2026-06-21 05:08:39.388Z | 146.01° 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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