STARLINK-33959, 63817
Orbit data source: Space-Track
STARLINK-33959, 63817 is a payload satellite owned by SpaceX/Seattle (US) in LEO that was launched on Sun, 04 May 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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63817 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: 11 hours ago
TLE from 11 hours ago
0 STARLINK-33959
1 63817U 25092P 26171.43832102 .00011478 00000-0 42580-3 0 9996
2 63817 42.9990 311.8507 0000999 258.7862 101.2878 15.27592840 64381Epoch: 2026-06-20T10:31Z
TLE epoch observation values (Epoch: 2026-06-20T10:31:10.936Z)
Latitude
0.00004°
Longitude
-114.59776°
Altitude
482.92 km
Speed
7.626 km/s
True Right ascension
20h 47m 24s
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
08:42:22
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
485.642 km
Perigee altitude
484.27 km
Semi-major axis
6,863.093 km
Eccentricity
0.0001
Inclination
42.999°
RAAN
311.8507°
Arg. of periapsis
258.7862°
True anomaly
101.29903°
Mean anomaly
101.2878°
Eccentric anomaly
101.29341°
Mean motion
3.81736 °/min
Orbital period
94.31 mins
BSTAR
0.0004258
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Other satellites on launch #92 in the year 2025 (2025-05-04 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-33959 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-06-21 11:48:23.674Z | 192.531° SSW | 2026-06-21 11:51:23.674Z | 138.526° SSE | 18.88° | 2026-06-21 11:53:23.674Z | 102.1° ESE |
| 6 mins | 2026-06-21 13:27:23.674Z | 246.572° WSW | 2026-06-21 13:29:23.674Z | 229.037° WSW | 43.559° | 2026-06-21 13:33:23.674Z | 72.649° E |
| 6 mins | 2026-06-21 15:06:23.674Z | 286.393° WNW | 2026-06-21 15:08:23.674Z | 330.106° NNW | 36.729° | 2026-06-21 15:12:23.674Z | 75.04° E |
| 6 mins | 2026-06-21 16:45:23.674Z | 290.824° WNW | 2026-06-21 16:48:23.674Z | 70.786° E | 42.715° | 2026-06-21 16:51:23.674Z | 101.811° ESE |
| 4 mins | 2026-06-21 18:25:23.674Z | 249.521° W | 2026-06-21 18:26:23.674Z | 223.704° SW | 25.748° | 2026-06-21 18:29:23.674Z | 155.868° 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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