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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
7 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, 9 m
Radar Cross Section
0.623 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 7 hours ago
0 GGSE 1 (GGRS)
1   728U 64001B   25192.18102231  .00000010  00000-0  45012-4 0  9992
2   728  69.9056 217.9239 0011072  59.9097 300.3105 13.97681030132496
Epoch: 2025-07-11T04:20Z
TLE epoch observation values (Epoch: 2025-07-11T04:20:40.327Z)
Latitude
-0.00005°
Longitude
-136.58079°
Altitude
900.082 km
Speed
7.404 km/s
True Right ascension
14h 31m 41s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
68.89384°
Longitude
-66.70252°
Altitude
905.749 km
Speed
7.41 km/s
Apparent Right ascension
14h 01m 06s
Apparent Declination
29° 41' 04"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
23:54:39
Azimuth
331.95° NNW
Elevation
-14.46°
Doppler factor
1
Orbital elements
Apogee altitude
907.946 km
Perigee altitude
891.829 km
Semi-major axis
7,278.025 km
Eccentricity
0.00111
Inclination
69.9056°
RAAN
217.9239°
Arg. of periapsis
59.9097°
True anomaly
Unknown
Mean anomaly
300.3105°
Eccentric anomaly
Unknown
Mean motion
3.49561 °/min
Orbital period
102.99 mins
BSTAR
0.000045012
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Other satellites on launch #1 in the year 1964 (1964-01-11 UTC)

GGSE 1 (GGRS) 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.
9 mins2025-07-11 11:45:35.688Z359.126° N2025-07-11 11:49:35.688Z45.864° ENE24.969°2025-07-11 11:54:35.688Z109.301° ESE
9 mins2025-07-11 13:31:35.688Z317.568° NNW2025-07-11 13:35:35.688Z257.014° W35.719°2025-07-11 13:40:35.688Z183.623° SSW
10 mins2025-07-12 02:47:35.688Z186.259° SSW2025-07-12 02:52:35.688Z91.069° ESE40.789°2025-07-12 02:57:35.688Z32.395° NE
7 mins2025-07-12 04:35:35.688Z275.409° WNW2025-07-12 04:38:35.688Z315.369° NNW20.534°2025-07-12 04:42:35.688Z358.646° N
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