USA 59, 20641
Orbit data source: Space-Track
USA 59, 20641 is an American payload satellite in HEO that was launched on Fri, 08 Jun 1990 UTC via a TITAN 405A 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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20641 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Last TLE update
2 days ago
Origin
Manufacturer
NRL
Mission
Defense Sigint
Bus & Motor
NOSS B, Unknown motor
Mass
~3,000 kg wet, ~3,000 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, 1 m
Radar Cross Section
1.178 m²
Expand to show TLE details & history
TLE from 2 days ago
0 USA 59
1 20641U 90050A 25165.43185259 -.00000012 00000-0 00000+0 0 9996
2 20641 63.3951 290.5933 4065234 266.1360 47.8391 6.02576204 24179Epoch: 2025-06-14T10:21Z
TLE epoch observation values (Epoch: 2025-06-14T10:21:52.063Z)
Latitude
-0.00005°
Longitude
-127.85512°
Altitude
4,576.397 km
Speed
6.445 km/s
True Right ascension
19h 22m 19s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
-17.15276°
Longitude
59.70282°
Altitude
2,820.87 km
Speed
7.446 km/s
Apparent Right ascension
10h 07m 49s
Apparent Declination
-41° 54' 09"
Sunlit
Visualization observer readout
Local Sidereal Time
03:56:29
Azimuth
123.318° SE
Elevation
-27.179°
Doppler factor
1
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Other satellites on launch #50 in the year 1990 (1990-06-08 UTC)
USA 59 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. |
|---|---|---|---|---|---|---|---|
| 103 mins | 2025-06-16 19:24:03.541Z | 325.9° NNW | 2025-06-16 20:39:03.541Z | 266.719° W | 40.407° | 2025-06-16 21:07:03.541Z | 191.788° SSW |
| 84 mins | 2025-06-17 06:11:03.541Z | 118.068° SE | 2025-06-17 06:41:03.541Z | 70.632° E | 25.619° | 2025-06-17 07:35:03.541Z | 30.882° NE |
| 129 mins | 2025-06-17 10:05:03.541Z | 213.637° SW | 2025-06-17 10:42:03.541Z | 302.782° NW | 44.728° | 2025-06-17 12:14:03.541Z | 47.156° ENE |
| 140 mins | 2025-06-17 14:32:03.541Z | 288.772° WNW | 2025-06-17 16:03:03.541Z | 25.734° NE | 40.452° | 2025-06-17 16:52:03.541Z | 107.154° ESE |
Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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