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GGSE 1 (GGRS), 728

Orbit data source: Space-Track

GGSE 1 (GGRS), 728 is an American payload satellite in LEO that was launched on Sat, 11 Jan 1964 UTC via a THOR SLV-2A AGENA D launch vehicle from the Air Force Western Test Range (AFWTR). 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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Identifier
728, 1964-001B
Orbit
LEO
Last TLE update
2 hours ago
Origin
Manufacturer
NRL
Mission
Defense Technology
Bus & Motor
NRL 20", Unknown motor
Mass
38 kg wet, 38 kg dry
Launch date (UTC)
1964-01-11 (62 years ago)
Launch vehicle
THOR SLV-2A AGENA D
Launch site
Air Force Western Test Range (AFWTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Sphere + 1 Ant, 4.5 m
Radar Cross Section
0.623 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 2 hours ago
0 GGSE 1 (GGRS)
1   728U 64001B   25199.19442689  .00000020  00000-0  52109-4 0  9990
2   728  69.9053 202.8217 0011339  48.9732 311.2352 13.97682095133478
Epoch: 2025-07-18T04:39Z
TLE epoch observation values (Epoch: 2025-07-18T04:39:58.483Z)
Latitude
-0.00003°
Longitude
-163.42137°
Altitude
898.704 km
Speed
7.406 km/s
True Right ascension
13h 31m 17s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
38.40273°
Longitude
-0.40112°
Altitude
906.535 km
Speed
7.403 km/s
Apparent Right ascension
03h 39m 53s
Apparent Declination
4° 05' 42"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
19:47:32
Azimuth
67.969° E
Elevation
-18.321°
Doppler factor
1
Orbital elements
Apogee altitude
908.136 km
Perigee altitude
891.631 km
Semi-major axis
7,278.021 km
Eccentricity
0.00113
Inclination
69.9053°
RAAN
202.8217°
Arg. of periapsis
48.9732°
True anomaly
311.1374°
Mean anomaly
311.2352°
Eccentric anomaly
311.18631°
Mean motion
3.49561 °/min
Orbital period
102.99 mins
BSTAR
0.000052109
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Other satellites on launch #1 in the year 1964 (1964-01-11 UTC)
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