USA 325, 51281
Orbit data source: Space-Track
USA 325, 51281 is a payload satellite owned by USSF (US) in GEO that was launched on Fri, 21 Jan 2022 UTC via an ATLAS V 511 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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51281 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
NGIS SSG
Mission
Operational Defense Classified
Bus & Motor
GEOSTAR-1, AOCS
Mass
500 kg wet, 500 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 2 Pan, 2.5 m
Radar Cross Section
7.621 m²
Expand to show TLE details & historyLast TLE update: 5 days ago
TLE from 5 days ago
0 USA 325
1 51281U 22006B 26006.70962434 -.00000360 00000-0 00000+0 0 9995
2 51281 0.1656 83.9928 0022746 181.1199 218.2610 1.00266333 14512Epoch: 2026-01-06T17:01Z
TLE epoch observation values (Epoch: 2026-01-06T17:01:51.542Z)
Latitude
0.12601°
Longitude
121.48077°
Altitude
35,863.402 km
Speed
3.069 km/s
True Right ascension
08h 12m 56s
True Declination
0° 07' 33"
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
21:21:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,885.108 km
Perigee altitude
35,693.28 km
Semi-major axis
42,167.331 km
Eccentricity
0.00227
Inclination
0.1656°
RAAN
83.9928°
Arg. of periapsis
181.1199°
True anomaly
218.09995°
Mean anomaly
218.261°
Eccentric anomaly
218.18044°
Mean motion
0.25066 °/min
Orbital period
1,436.23 mins
BSTAR
0
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Other satellites on launch #6 in the year 2022 (2022-01-21 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.USA 325 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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| USA 325 is likely not visible in the next few days. |
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51281 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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