USA 61, 20691
Orbit data source: Space-Track
USA 61, 20691 is an American payload satellite in LEO that was launched on Fri, 08 Jun 1990 UTC via a TITAN 405A launch vehicle from the Air Force Eastern Test Range (AFETR). 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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20691 intel report (Beta)
USA 61 details
Identifier | |
Orbit | LEO |
Last TLE update | 19 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 19 hours ago
0 USA 61
1 20691U 90050C 25014.79406963 .00005517 00000-0 43822-3 0 9998
2 20691 63.2964 164.4002 0898331 75.2505 294.6236 13.56363551 35797
Epoch: 2025-01-14T19:03Z
Definitive object data (Epoch: 2025-01-14T19:03:27.616Z)
Latitude | -0.00002° |
Longitude | 124.03947° |
Altitude | 824.895 km |
Speed | 7.553 km/s |
True Right ascension | 10h 57m 36s |
True Declination | 0° 00' 00" |
Sunlit | Object was in full shadow at TLE epoch |
Visualization TLE readout
Latitude | -1.63808° |
Longitude | 121.05587° |
Altitude | 844.893 km |
Speed | 7.533 km/s |
Apparent Right ascension | 08h 03m 46s |
Apparent Declination | -31° 43' 07" |
Sunlit | Object is in full shadow |
Visualization observer readout
Local Sidereal Time | 15:11:28 |
Azimuth | 253.288° W |
Elevation | -31.823° |
Doppler factor | 1 |
Orbital elements
Apogee altitude | 1,714.85 km |
Perigee altitude | 380.668 km |
Semi-major axis | 7,425.896 km |
Eccentricity | 0.0898331 |
Inclination | 63.2964° |
RAAN | 164.4002° |
Arg. of periapsis | 75.2505° |
True anomaly | 284.85502° |
Mean anomaly | 294.6236° |
Eccentric anomaly | 289.78023° |
Mean motion | 3.39172 °/min |
BSTAR | 0.00043822 |
Orbital period | 106.14 mins |
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Other satellites on launch #50 in the year 1990 (1990-06-08 UTC)
USA 59, 20641 |
USA 60, 20682 |
USA 61, 20691 |
USA 62, 20692 |
TITAN 4 R/B, 20642 |
USA 59 DEB, 21916 |
USA 59 DEB, 21917 |
USA 59 DEB, 22171 |
USA 60 DEB, 27420 |
USA 59-62 DEB, 28249 |
USA 59-62 DEB, 28250 |
USA 61 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. |
---|---|---|---|---|---|---|---|
8 mins | 2025-01-15 20:20:46.223Z | 326.962° NNW | 2025-01-15 20:23:46.223Z | 0.885° NNE | 44.915° | 2025-01-15 20:28:46.223Z | 146.427° SSE |
5 mins | 2025-01-16 11:55:46.223Z | 240.046° WSW | 2025-01-16 11:57:46.223Z | 297.283° NW | 35.282° | 2025-01-16 12:00:46.223Z | 20.405° NNE |
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