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: 18 hours ago
TLE from 18 hours ago
0 KUIPER-00021
1 63736U 25088N 26090.49009197 .00008814 00000-0 10853-2 0 9994
2 63736 51.9026 7.2691 0003021 140.7145 219.4038 14.83579753 50715Epoch: 2026-03-31T11:45Z
TLE epoch observation values (Epoch: 2026-03-31T11:45:43.946Z)
Latitude
-0.00005°
Longitude
1.96942°
Altitude
620.429 km
Speed
7.549 km/s
True Right ascension
00h 29m 04s
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
11:03:21
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
620.612 km
Perigee altitude
616.385 km
Semi-major axis
6,996.636 km
Eccentricity
0.0003
Inclination
51.9026°
RAAN
7.2691°
Arg. of periapsis
140.7145°
True anomaly
219.38183°
Mean anomaly
219.4038°
Eccentric anomaly
219.39282°
Mean motion
3.70859 °/min
Orbital period
97.07 mins
BSTAR
0.0010853
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-04-01 20:14:27.708Z | 200.967° SSW | 2026-04-01 20:18:27.708Z | 137.472° SSE | 31.343° | 2026-04-01 20:22:27.708Z | 67.774° E |
| 6 mins | 2026-04-01 21:57:27.708Z | 274.056° WNW | 2026-04-01 21:59:27.708Z | 320.005° NNW | 33.257° | 2026-04-01 22:03:27.708Z | 39.615° NE |
| 4 mins | 2026-04-01 23:40:27.708Z | 327.289° NNW | 2026-04-01 23:41:27.708Z | 343.706° N | 17.652° | 2026-04-01 23:44:27.708Z | 30.503° NE |
| 5 mins | 2026-04-02 01:22:27.708Z | 339.957° N | 2026-04-02 01:24:27.708Z | 14.325° NNE | 19.664° | 2026-04-02 01:27:27.708Z | 59.786° ENE |
| 7 mins | 2026-04-02 03:03:27.708Z | 319.385° NNW | 2026-04-02 03:06:27.708Z | 39.573° NE | 40.296° | 2026-04-02 03:10:27.708Z | 112.417° ESE |
| 5 mins | 2026-04-02 04:45:27.708Z | 264.575° W | 2026-04-02 04:47:27.708Z | 226.367° WSW | 22.245° | 2026-04-02 04:50:27.708Z | 179.751° S |
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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