USA 74, 21799
Orbit data source: Space-Track
USA 74, 21799 is an American payload satellite in LEO that was launched on Fri, 08 Nov 1991 UTC via a TITAN 403A launch vehicle from the Air Force Western Test Range (AFWTR). Payloads include a variety of satellites, spacecraft, and rockets 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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21799 intel report (Beta)
USA 74 details
| Identifier | |
| Orbit | LEO |
| Last TLE update | 10 hours ago |
| Origin | |
| Manufacturer | NRL |
| Mission | Defense Sigint |
| Bus & Motor | NOSS B SSU, Unknown motor |
| Mass | ~400 kg wet, ~400 kg dry |
| Launch date (UTC) | |
| Launch vehicle | |
| Launch site | |
| Object type | Payload Rocket body Debris |
| Shape & HBR | Cyl, 1 m |
| Radar Cross Section | 1.178 m², Large (>1 m²) |
Expand to show TLE details & history
TLE from 10 hours ago
0 USA 74
1 21799U 91076C 24361.14637254 .00006341 00000-0 57097-3 0 9994
2 21799 63.3000 143.0658 0896878 62.9541 306.0140 13.53256900 30553Epoch: 2024-12-26T03:30Z
Definitive object data (Epoch: 2024-12-26T03:30:46.587Z)
| Latitude | -0.00006° |
| Longitude | -4.7583° |
| Altitude | 712.065 km |
| Speed | 7.674 km/s |
| True Right ascension | 09h 32m 15s |
| True Declination | 0° 00' 00" |
| Sunlit | Object was in full shadow at TLE epoch |
Visualization TLE readout
| Latitude | -62.97168° |
| Longitude | -106.98985° |
| Altitude | 1,692.869 km |
| Speed | 6.734 km/s |
| Apparent Right ascension | 01h 44m 59s |
| Apparent Declination | -53° 19' 43" |
| Sunlit | Object is in daylight |
Visualization observer readout
| Local Sidereal Time | 13:01:24 |
| Azimuth | 205.291° SW |
| Elevation | -74.681° |
| Doppler factor | 1 |
Orbital elements
| Apogee altitude | 1,726.154 km |
| Perigee altitude | 392.091 km |
| Semi-major axis | 7,437.26 km |
| Eccentricity | 0.0896878 |
| Inclination | 63.3° |
| RAAN | 143.0658° |
| Arg. of periapsis | 62.9541° |
| True anomaly | 297.15171° |
| Mean anomaly | 306.014° |
| Eccentric anomaly | 301.63904° |
| Mean motion | 3.38395 °/min |
| BSTAR | 0.00057097 |
| Orbital period | 106.38 mins |
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Other satellites on launch #76 in the year 1991 (1991-11-08 UTC)
USA 74 Visibility forecast
Observer location: undefined°, undefined
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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2024-12-26 19:57:41.807Z | 333.632° NNW | 2024-12-26 20:01:41.807Z | 34.195° NE | 41.082° | 2024-12-26 20:07:41.807Z | 135.217° SSE |
| 6 mins | 2024-12-26 21:49:41.807Z | 269.537° W | 2024-12-26 21:51:41.807Z | 243.524° WSW | 17.834° | 2024-12-26 21:55:41.807Z | 204.437° SW |
| 5 mins | 2024-12-27 11:35:41.807Z | 219.938° SW | 2024-12-27 11:37:41.807Z | 248.955° W | 42.143° | 2024-12-27 11:40:41.807Z | 29.947° NE |
Authenticating...
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