KUIPER-00021, 63736
Orbit data source: Space-Track
KUIPER-00021, 63736 is a payload satellite owned by Kuiper Systems (US) in LEO that was launched on Mon, 28 Apr 2025 UTC via an ATLAS V 551 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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63736 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
Kuiper Systems
Mission
Operational Commercial Communications
Bus & Motor
KUIPER, Unknown motor
Mass
~490 kg wet, ~490 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 3.4 m
Radar Cross Section
2.326 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 KUIPER-00021
1 63736U 25088N 25348.36039738 .00003820 00000-0 53018-3 0 9992
2 63736 51.9012 121.4034 0007598 151.2348 208.9034 14.79902611 34848Epoch: 2025-12-14T08:38Z
TLE epoch observation values (Epoch: 2025-12-14T08:38:58.333Z)
Latitude
-0.00008°
Longitude
-91.61414°
Altitude
635.04 km
Speed
7.539 km/s
True Right ascension
08h 05m 36s
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
15:11:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
635.407 km
Perigee altitude
624.758 km
Semi-major axis
7,008.22 km
Eccentricity
0.00076
Inclination
51.9012°
RAAN
121.4034°
Arg. of periapsis
151.2348°
True anomaly
208.86135°
Mean anomaly
208.9034°
Eccentric anomaly
208.88237°
Mean motion
3.6994 °/min
Orbital period
97.31 mins
BSTAR
0.00053018
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Other satellites on launch #88 in the year 2025 (2025-04-28 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.KUIPER-00021 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-12-15 17:32:16.995Z | 319.705° NNW | 2025-12-15 17:36:16.995Z | 49.607° ENE | 35.476° | 2025-12-15 17:39:16.995Z | 101.009° ESE |
| 6 mins | 2025-12-15 19:14:16.995Z | 282.034° WNW | 2025-12-15 19:17:16.995Z | 225.035° WSW | 27.891° | 2025-12-15 19:20:16.995Z | 171.536° S |
| 7 mins | 2025-12-16 11:04:16.995Z | 212.891° SW | 2025-12-16 11:07:16.995Z | 141.017° SSE | 41.162° | 2025-12-16 11:11:16.995Z | 59.527° ENE |
| 6 mins | 2025-12-16 12:46:16.995Z | 283.023° WNW | 2025-12-16 12:49:16.995Z | 342.419° N | 27.51° | 2025-12-16 12:52:16.995Z | 33.462° NE |
| 4 mins | 2025-12-16 14:30:16.995Z | 335.178° NNW | 2025-12-16 14:31:16.995Z | 351.219° N | 17.1° | 2025-12-16 14:34:16.995Z | 35.999° NE |
| 5 mins | 2025-12-16 16:12:16.995Z | 340.2° N | 2025-12-16 16:14:16.995Z | 17.473° NNE | 23.138° | 2025-12-16 16:17:16.995Z | 68.064° E |
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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