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
SPHERE + ANT, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 GGSE 1 (GGRS)
1 00728U 64001B 26275.58974343 .00000024 00000-0 54991-4 0 9991
2 00728 69.9093 332.2735 0014984 218.7690 141.2342 13.97792710194680Epoch: 2026-10-02T14:09Z
TLE epoch observation values (Epoch: 2026-10-02T14:09:13.832Z)
Latitude
-0.00001°
Longitude
108.65635°
Altitude
912.269 km
Speed
7.392 km/s
True Right ascension
22h 09m 05s
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
13:08:29
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
910.404 km
Perigee altitude
888.595 km
Semi-major axis
7,277.636 km
Eccentricity
0.0015
Inclination
69.9093°
RAAN
332.2735°
Arg. of periapsis
218.769°
True anomaly
141.34155°
Mean anomaly
141.2342°
Eccentric anomaly
141.28789°
Mean motion
3.49589 °/min
Orbital period
102.98 mins
BSTAR
0.000054991
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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 | 2026-10-03 04:00:52.102Z | 141.054° SSE | 2026-10-03 04:04:52.102Z | 96.508° ESE | 19.37° | 2026-10-03 04:07:52.102Z | 63.244° ENE |
| 10 mins | 2026-10-03 05:44:52.102Z | 219.976° SW | 2026-10-03 05:49:52.102Z | 316.189° NNW | 60.445° | 2026-10-03 05:54:52.102Z | 17.01° NNE |
| 4 mins | 2026-10-03 13:02:52.102Z | 28.056° NE | 2026-10-03 13:04:52.102Z | 49.771° ENE | 13.788° | 2026-10-03 13:06:52.102Z | 70.354° E |
| 9 mins | 2026-10-03 14:46:52.102Z | 340.696° N | 2026-10-03 14:50:52.102Z | 58.629° ENE | 76.916° | 2026-10-03 14:55:52.102Z | 150.103° SSE |
| 4 mins | 2026-10-03 16:33:52.102Z | 280.932° WNW | 2026-10-03 16:35:52.102Z | 258.851° W | 14.639° | 2026-10-03 16:37:52.102Z | 237.397° WSW |
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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