KUIPER-00061, 64521
Orbit data source: Space-Track
KUIPER-00061, 64521 is a payload satellite owned by Kuiper Systems (US) in LEO that was launched on Mon, 23 Jun 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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64521 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: 14 hours ago
TLE from 14 hours ago
0 KUIPER-00061
1 64521U 25134X 26171.28104022 .00000714 00000-0 12262-3 0 9997
2 64521 51.8985 134.4387 0000870 70.3038 289.8018 14.79931169 55323Epoch: 2026-06-20T06:44Z
TLE epoch observation values (Epoch: 2026-06-20T06:44:41.875Z)
Latitude
-0.00001°
Longitude
124.7663°
Altitude
630.081 km
Speed
7.545 km/s
True Right ascension
08h 57m 45s
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
07:17:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
630.603 km
Perigee altitude
629.383 km
Semi-major axis
7,008.13 km
Eccentricity
0.00009
Inclination
51.8985°
RAAN
134.4387°
Arg. of periapsis
70.3038°
True anomaly
289.79242°
Mean anomaly
289.8018°
Eccentric anomaly
289.79711°
Mean motion
3.69947 °/min
Orbital period
97.31 mins
BSTAR
0.00012262
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Other satellites on launch #134 in the year 2025 (2025-06-23 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-00061 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 | 2026-06-20 23:05:55.725Z | 171.355° S | 2026-06-20 23:08:55.725Z | 125.362° SE | 19.274° | 2026-06-20 23:11:55.725Z | 82.588° E |
| 7 mins | 2026-06-21 00:46:55.725Z | 245.267° WSW | 2026-06-21 00:49:55.725Z | 333.495° NNW | 42.858° | 2026-06-21 00:53:55.725Z | 47.701° ENE |
| 5 mins | 2026-06-21 02:29:55.725Z | 308.657° NW | 2026-06-21 02:31:55.725Z | 343.666° N | 21.056° | 2026-06-21 02:34:55.725Z | 31.057° NE |
| 5 mins | 2026-06-21 04:12:55.725Z | 337.389° NNW | 2026-06-21 04:14:55.725Z | 9.759° NNE | 17.712° | 2026-06-21 04:17:55.725Z | 51.233° ENE |
| 6 mins | 2026-06-21 05:54:55.725Z | 334.204° NNW | 2026-06-21 05:56:55.725Z | 17.819° NNE | 31.187° | 2026-06-21 06:00:55.725Z | 92.916° ESE |
| 7 mins | 2026-06-21 07:35:55.725Z | 288.505° WNW | 2026-06-21 07:38:55.725Z | 217.927° SW | 35.072° | 2026-06-21 07:42:55.725Z | 153.499° 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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