USA 76, 21808
Orbit data source: Space-Track
USA 76, 21808 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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21808 intel report (Beta)
USA 76 details
| Identifier | |
| Orbit | LEO |
| Last TLE update | 11 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 11 hours ago
0 USA 76
1 21808U 91076D 24361.11083228 .00005811 00000-0 54565-3 0 9996
2 21808 63.3025 148.7826 0895669 64.6375 304.4638 13.52460769 33052Epoch: 2024-12-26T02:39Z
Definitive object data (Epoch: 2024-12-26T02:39:35.908Z)
| Latitude | -0.00003° |
| Longitude | 13.78804° |
| Altitude | 731.488 km |
| Speed | 7.656 km/s |
| True Right ascension | 09h 55m 07s |
| True Declination | 0° 00' 00" |
| Sunlit | Object was in full shadow at TLE epoch |
Visualization TLE readout
| Latitude | 1.39093° |
| Longitude | 13.3073° |
| Altitude | 716.582 km |
| Speed | 7.671 km/s |
| Apparent Right ascension | 06h 59m 12s |
| Apparent Declination | -39° 24' 43" |
| Sunlit | Object is in full shadow |
Visualization observer readout
| Local Sidereal Time | 12:40:30 |
| Azimuth | 235.595° WSW |
| Elevation | -21.045° |
| Doppler factor | 1 |
Orbital elements
| Apogee altitude | 1,728.436 km |
| Perigee altitude | 395.648 km |
| Semi-major axis | 7,440.179 km |
| Eccentricity | 0.0895669 |
| Inclination | 63.3025° |
| RAAN | 148.7826° |
| Arg. of periapsis | 64.6375° |
| True anomaly | 295.46828° |
| Mean anomaly | 304.4638° |
| Eccentric anomaly | 300.02044° |
| Mean motion | 3.38196 °/min |
| BSTAR | 0.00054565 |
| Orbital period | 106.45 mins |
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Other satellites on launch #76 in the year 1991 (1991-11-08 UTC)
USA 76 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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2024-12-26 19:07:50.905Z | 26.555° NE | 2024-12-26 19:08:50.905Z | 42.256° NE | 15.639° | 2024-12-26 19:11:50.905Z | 80.661° E |
| 9 mins | 2024-12-26 20:55:50.905Z | 317.168° NNW | 2024-12-26 20:58:50.905Z | 244.691° WSW | 43.299° | 2024-12-26 21:04:50.905Z | 155.926° SSE |
| 4 mins | 2024-12-27 12:33:50.905Z | 263.183° W | 2024-12-27 12:35:50.905Z | 321.513° NNW | 23.977° | 2024-12-27 12:37:50.905Z | 6.963° NNE |
Authenticating...
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