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: 5 days ago
TLE from 5 days ago
0 GGSE 1 (GGRS)
1 00728U 64001B 26154.86775617 .00000062 00000-0 81993-4 0 9995
2 00728 69.9077 232.2634 0013526 352.5152 7.5750 13.97773329177818Epoch: 2026-06-03T20:49Z
TLE epoch observation values (Epoch: 2026-06-03T20:49:34.133Z)
Latitude
0.00002°
Longitude
27.55098°
Altitude
894.062 km
Speed
7.41 km/s
True Right ascension
15h 29m 03s
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
00:55:01
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
909.411 km
Perigee altitude
889.723 km
Semi-major axis
7,277.704 km
Eccentricity
0.00135
Inclination
69.9077°
RAAN
232.2634°
Arg. of periapsis
352.5152°
True anomaly
7.59547°
Mean anomaly
7.575°
Eccentric anomaly
7.58523°
Mean motion
3.49584 °/min
Orbital period
102.98 mins
BSTAR
0.000081993
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-06-08 14:47:29.743Z | 25.721° NE | 2026-06-08 14:48:29.743Z | 50.353° ENE | 35.083° | 2026-06-08 14:54:29.743Z | 131.632° SE |
| 8 mins | 2026-06-08 16:30:29.743Z | 302.787° NW | 2026-06-08 16:34:29.743Z | 248.797° W | 24.379° | 2026-06-08 16:38:29.743Z | 203.663° SW |
| 4 mins | 2026-06-09 04:04:29.743Z | 113.015° SE | 2026-06-09 04:05:29.743Z | 102.209° ESE | 13.196° | 2026-06-09 04:08:29.743Z | 71.009° E |
| 9 mins | 2026-06-09 05:46:29.743Z | 208.808° SW | 2026-06-09 05:50:29.743Z | 287.266° WNW | 44.624° | 2026-06-09 05:55:29.743Z | 21.943° NNE |
| 4 mins | 2026-06-09 07:35:29.743Z | 298.155° NW | 2026-06-09 07:37:29.743Z | 320.413° NNW | 13.828° | 2026-06-09 07:39:29.743Z | 341.347° N |
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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