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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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, Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 STARLINK-33959
1 63817U 25092P 25339.42897650 .00038647 00000-0 14053-2 0 9999
2 63817 43.0017 344.4569 0001720 285.9065 74.1597 15.27609014 34254Epoch: 2025-12-05T10:17Z
TLE epoch observation values (Epoch: 2025-12-05T10:17:43.569Z)
Latitude
-0.00003°
Longitude
115.55413°
Altitude
482.416 km
Speed
7.626 km/s
True Right ascension
22h 57m 49s
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
08:29:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
486.088 km
Perigee altitude
483.727 km
Semi-major axis
6,863.044 km
Eccentricity
0.00017
Inclination
43.0017°
RAAN
344.4569°
Arg. of periapsis
285.9065°
True anomaly
74.17866°
Mean anomaly
74.1597°
Eccentric anomaly
74.16918°
Mean motion
3.8174 °/min
Orbital period
94.3 mins
BSTAR
0.0014053
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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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-12-07 03:18:10.115Z | 212.301° SW | 2025-12-07 03:21:10.115Z | 135.715° SSE | 30.197° | 2025-12-07 03:24:10.115Z | 83.144° E |
| 6 mins | 2025-12-07 04:57:10.115Z | 266.686° W | 2025-12-07 04:59:10.115Z | 300.998° NW | 40.807° | 2025-12-07 05:03:10.115Z | 70.477° E |
| 6 mins | 2025-12-07 06:36:10.115Z | 291.254° WNW | 2025-12-07 06:39:10.115Z | 28.127° NE | 37.838° | 2025-12-07 06:42:10.115Z | 82.124° E |
| 6 mins | 2025-12-07 08:15:10.115Z | 283.731° WNW | 2025-12-07 08:18:10.115Z | 165.249° S | 42.376° | 2025-12-07 08:21:10.115Z | 119.547° 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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