ASCENT, 51287
Orbit data source: Space-Track
ASCENT, 51287 is a payload satellite owned by AFRL/RV (US) in GEO that was launched on Tue, 07 Dec 2021 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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51287 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Blue Canyon
Mission
Operational Defense Technology
Bus & Motor
CUBESAT 12U, Unknown motor
Mass
~25 kg wet, ~25 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box, 0.2 m
Radar Cross Section
0.080 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 5 days ago
TLE from 5 days ago
0 ASCENT
1 51287U 21118E 26253.27752049 .00000027 00000-0 00000-0 0 9999
2 51287 4.3819 76.0903 0008341 122.2288 238.2047 1.01225301 17184Epoch: 2026-09-10T06:39Z
TLE epoch observation values (Epoch: 2026-09-10T06:39:37.770Z)
Latitude
0°
Longitude
-12.78666°
Altitude
35,539.214 km
Speed
3.083 km/s
True Right ascension
05h 05m 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
09:00:51
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,557.407 km
Perigee altitude
35,487.509 km
Semi-major axis
41,900.595 km
Eccentricity
0.00083
Inclination
4.3819°
RAAN
76.0903°
Arg. of periapsis
122.2288°
True anomaly
238.12351°
Mean anomaly
238.2047°
Eccentric anomaly
238.1641°
Mean motion
0.25305 °/min
Orbital period
1,422.62 mins
BSTAR
0
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Other satellites on launch #118 in the year 2021 (2021-12-07 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.ASCENT Visibility
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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. |
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| ASCENT is likely not visible in the next few days. |
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51287 neighbors
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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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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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