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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Edit Public Description
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 hours ago
TLE from 5 hours ago
0 GGSE 1 (GGRS)
1 728U 64001B 25308.47355789 .00000108 00000-0 11444-3 0 9990
2 728 69.9077 327.5079 0016666 275.5015 84.4189 13.97714107148276Epoch: 2025-11-04T11:21Z
TLE epoch observation values (Epoch: 2025-11-04T11:21:55.401Z)
Latitude
-0.00011°
Longitude
113.06695°
Altitude
902.869 km
Speed
7.401 km/s
True Right ascension
21h 50m 01s
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
11:57:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
911.902 km
Perigee altitude
887.643 km
Semi-major axis
7,277.909 km
Eccentricity
0.00167
Inclination
69.9077°
RAAN
327.5079°
Arg. of periapsis
275.5015°
True anomaly
84.60901°
Mean anomaly
84.4189°
Eccentric anomaly
84.51395°
Mean motion
3.49569 °/min
Orbital period
102.98 mins
BSTAR
0.00011444
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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. |
|---|---|---|---|---|---|---|---|
| 4 mins | 2025-11-05 01:15:03.797Z | 119.301° SE | 2025-11-05 01:17:03.797Z | 98.665° ESE | 12.818° | 2025-11-05 01:19:03.797Z | 77.862° E |
| 10 mins | 2025-11-05 02:57:03.797Z | 206.175° SW | 2025-11-05 03:02:03.797Z | 345.893° N | 44.628° | 2025-11-05 03:07:03.797Z | 23.097° NE |
| 5 mins | 2025-11-05 04:46:03.797Z | 290.596° WNW | 2025-11-05 04:48:03.797Z | 312.39° NW | 14.689° | 2025-11-05 04:51:03.797Z | 344.297° N |
| 10 mins | 2025-11-05 11:59:03.797Z | 348.647° N | 2025-11-05 12:03:03.797Z | 54.375° ENE | 39.778° | 2025-11-05 12:09:03.797Z | 139.993° SSE |
| 7 mins | 2025-11-05 13:45:03.797Z | 296.636° NW | 2025-11-05 13:48:03.797Z | 261.259° W | 19.897° | 2025-11-05 13:52:03.797Z | 215.436° 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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