STARLINK-35951, 66619
Orbit data source: Space-Track
STARLINK-35951, 66619 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 23 Nov 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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66619 intel report (Beta)
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Edit Public Description
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
Expand to show TLE details & historyLast TLE update: 8 hours ago
TLE from 8 hours ago
0 STARLINK-35951
1 66619U 25271C 25355.37009779 .00086184 00000-0 17028-2 0 9994
2 66619 53.1602 145.9910 0002785 209.0656 151.0197 15.46426118 5542Epoch: 2025-12-21T08:52Z
TLE epoch observation values (Epoch: 2025-12-21T08:52:56.449Z)
Latitude
-0.00001°
Longitude
-77.42774°
Altitude
429.755 km
Speed
7.654 km/s
True Right ascension
09h 43m 57s
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
15:47:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
429.344 km
Perigee altitude
425.554 km
Semi-major axis
6,805.586 km
Eccentricity
0.00028
Inclination
53.1602°
RAAN
145.991°
Arg. of periapsis
209.0656°
True anomaly
151.03516°
Mean anomaly
151.0197°
Eccentric anomaly
151.02743°
Mean motion
3.86585 °/min
Orbital period
93.12 mins
BSTAR
0.0017028
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Other satellites on launch #271 in the year 2025 (2025-11-23 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-35951 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 | 2025-12-21 18:39:10.233Z | 348.692° N | 2025-12-21 18:41:10.233Z | 35.921° NE | 19.314° | 2025-12-21 18:43:10.233Z | 74.615° E |
| 4 mins | 2025-12-21 20:16:10.233Z | 292.27° WNW | 2025-12-21 20:18:10.233Z | 199.163° SSW | 38.386° | 2025-12-21 20:20:10.233Z | 150.017° SSE |
| 5 mins | 2025-12-22 13:00:10.233Z | 240.532° WSW | 2025-12-22 13:02:10.233Z | 324.564° NNW | 43.356° | 2025-12-22 13:05:10.233Z | 45.529° ENE |
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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