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
Orbit
Country
USRelated business
Manufacturer
NRL
Mission
Spacecraft
Bus & Motor
NRL 20", Unknown motor
Mass
38 kg wet, 38 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 GGSE 1 (GGRS)
1 00728U 64001B 26044.59182778 .00000064 00000-0 83648-4 0 9994
2 00728 69.9072 109.7541 0012137 158.5716 201.5900 13.97748484162401Epoch: 2026-02-13T14:12Z
TLE epoch observation values (Epoch: 2026-02-13T14:12:13.920Z)
Latitude
-0.00005°
Longitude
113.06905°
Altitude
912.128 km
Speed
7.392 km/s
True Right ascension
07h 19m 00s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
06:36:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
908.486 km
Perigee altitude
890.82 km
Semi-major axis
7,277.79 km
Eccentricity
0.00121
Inclination
69.9072°
RAAN
109.7541°
Arg. of periapsis
158.5716°
True anomaly
201.5389°
Mean anomaly
201.59°
Eccentric anomaly
201.56444°
Mean motion
3.49578 °/min
Orbital period
102.98 mins
BSTAR
0.000083648
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Other satellites on launch #1 in the year 1964 (1964-01-11 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.GGSE 1 (GGRS) Visibility forecast
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-02-14 04:04:56.944Z | 123.113° SE | 2026-02-14 04:06:56.944Z | 103.12° ESE | 12.665° | 2026-02-14 04:09:56.944Z | 72.405° E |
| 10 mins | 2026-02-14 05:47:56.944Z | 206.607° SW | 2026-02-14 05:51:56.944Z | 260.234° W | 44.789° | 2026-02-14 05:57:56.944Z | 23.476° NE |
| 4 mins | 2026-02-14 07:36:56.944Z | 296.712° NW | 2026-02-14 07:38:56.944Z | 319.283° NNW | 14.462° | 2026-02-14 07:40:56.944Z | 340.638° N |
| 10 mins | 2026-02-14 14:48:56.944Z | 347.401° N | 2026-02-14 14:52:56.944Z | 42.598° NE | 39.118° | 2026-02-14 14:58:56.944Z | 139.22° SSE |
| 6 mins | 2026-02-14 16:35:56.944Z | 289.938° WNW | 2026-02-14 16:37:56.944Z | 265.218° W | 19.462° | 2026-02-14 16:41:56.944Z | 217.468° SW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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