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: 16 hours ago
TLE from 16 hours ago
0 GGSE 1 (GGRS)
1 00728U 64001B 26095.11436164 .00000096 00000-0 10562-3 0 9998
2 00728 69.9104 0.9492 0010665 79.5077 280.7230 13.97761364169460Epoch: 2026-04-05T02:44Z
TLE epoch observation values (Epoch: 2026-04-05T02:44:40.845Z)
Latitude
-0.00004°
Longitude
126.35457°
Altitude
902.429 km
Speed
7.402 km/s
True Right ascension
00h 03m 47s
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
00:53:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
907.37 km
Perigee altitude
891.846 km
Semi-major axis
7,277.745 km
Eccentricity
0.00107
Inclination
69.9104°
RAAN
0.9492°
Arg. of periapsis
79.5077°
True anomaly
280.60289°
Mean anomaly
280.723°
Eccentric anomaly
280.66295°
Mean motion
3.49581 °/min
Orbital period
102.98 mins
BSTAR
0.00010562
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-04-05 20:04:29.727Z | 243.518° WSW | 2026-04-05 20:08:29.727Z | 294.136° NW | 29.228° | 2026-04-05 20:13:29.727Z | 4.146° NNE |
| 7 mins | 2026-04-06 03:21:29.727Z | 16.96° NNE | 2026-04-06 03:24:29.727Z | 57.531° ENE | 21.286° | 2026-04-06 03:28:29.727Z | 101.733° ESE |
| 10 mins | 2026-04-06 05:05:29.727Z | 324.431° NNW | 2026-04-06 05:09:29.727Z | 272.115° WNW | 39.796° | 2026-04-06 05:15:29.727Z | 173.232° S |
| 9 mins | 2026-04-06 18:22:29.727Z | 173.743° S | 2026-04-06 18:26:29.727Z | 105.148° ESE | 36.633° | 2026-04-06 18:31:29.727Z | 37.556° NE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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