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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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: 3 days ago
TLE from 3 days ago
0 KUIPER-00021
1 63736U 25088N 26154.98920868 .00000763 00000-0 12914-3 0 9992
2 63736 51.9013 81.4421 0001128 110.2469 249.8615 14.79938398 60272Epoch: 2026-06-03T23:44Z
TLE epoch observation values (Epoch: 2026-06-03T23:44:27.629Z)
Latitude
-0.00002°
Longitude
-167.11295°
Altitude
630.538 km
Speed
7.544 km/s
True Right ascension
05h 25m 46s
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
12:32:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
630.76 km
Perigee altitude
629.179 km
Semi-major axis
7,008.107 km
Eccentricity
0.00011
Inclination
51.9013°
RAAN
81.4421°
Arg. of periapsis
110.2469°
True anomaly
249.84936°
Mean anomaly
249.8615°
Eccentric anomaly
249.85543°
Mean motion
3.69949 °/min
Orbital period
97.31 mins
BSTAR
0.00012914
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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 | 2026-06-07 02:45:26.125Z | 321.621° NNW | 2026-06-07 02:49:26.125Z | 43.12° NE | 32.442° | 2026-06-07 02:52:26.125Z | 94.179° ESE |
| 7 mins | 2026-06-07 04:27:26.125Z | 287.733° WNW | 2026-06-07 04:30:26.125Z | 227.732° WSW | 32.732° | 2026-06-07 04:34:26.125Z | 158.255° S |
| 7 mins | 2026-06-07 20:17:26.125Z | 204.303° SW | 2026-06-07 20:20:26.125Z | 142.255° SSE | 36.845° | 2026-06-07 20:24:26.125Z | 63.743° ENE |
| 6 mins | 2026-06-07 21:59:26.125Z | 277.316° WNW | 2026-06-07 22:02:26.125Z | 342.074° N | 30.123° | 2026-06-07 22:05:26.125Z | 34.849° NE |
| 4 mins | 2026-06-07 23:43:26.125Z | 334.014° NNW | 2026-06-07 23:44:26.125Z | 350.469° N | 17.512° | 2026-06-07 23:47:26.125Z | 34.953° NE |
| 5 mins | 2026-06-08 01:25:26.125Z | 340.73° N | 2026-06-08 01:27:26.125Z | 16.612° NNE | 21.579° | 2026-06-08 01:30:26.125Z | 64.239° ENE |
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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