OPS 4988 (GREB 6), 1271
Orbit data source: Space-Track
OPS 4988 (GREB 6), 1271 is an American payload satellite in LEO that was launched on Tue, 09 Mar 1965 UTC via a THOR SLV-2 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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1271 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
NRL
Mission
Spacecraft
Bus & Motor
NRL 24", Unknown motor
Mass
48 kg wet, 48 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: 21 hours ago
TLE from 21 hours ago
0 OPS 4988 (GREB 6)
1 01271U 65016A 25293.79592898 .00000127 00000-0 12956-3 0 9993
2 01271 70.0790 308.4716 0019825 16.4293 156.0953 13.96602902 85386Epoch: 2025-10-20T19:06Z
TLE epoch observation values (Epoch: 2025-10-20T19:06:08.263Z)
Latitude
6.87713°
Longitude
169.952°
Altitude
920.48 km
Speed
7.386 km/s
True Right ascension
08h 23m 55s
True Declination
6° 50' 14"
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
11:02:24
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
918.053 km
Perigee altitude
889.181 km
Semi-major axis
7,281.754 km
Eccentricity
0.00198
Inclination
70.079°
RAAN
308.4716°
Arg. of periapsis
16.4293°
True anomaly
156.18715°
Mean anomaly
156.0953°
Eccentric anomaly
156.14124°
Mean motion
3.49292 °/min
Orbital period
103.07 mins
BSTAR
0.00012956
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Other satellites on launch #16 in the year 1965 (1965-03-09 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.OPS 4988 (GREB 6) 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-10-22 01:20:28.164Z | 150.93° SSE | 2025-10-22 01:24:28.164Z | 99.898° ESE | 23.663° | 2025-10-22 01:28:28.164Z | 52.394° ENE |
| 9 mins | 2025-10-22 03:05:28.164Z | 234.389° WSW | 2025-10-22 03:09:28.164Z | 298.153° NW | 35.476° | 2025-10-22 03:14:28.164Z | 10.274° NNE |
| 6 mins | 2025-10-22 10:22:28.164Z | 19.266° NNE | 2025-10-22 10:25:28.164Z | 54.46° ENE | 16.909° | 2025-10-22 10:28:28.164Z | 86.303° E |
| 10 mins | 2025-10-22 12:06:28.164Z | 332.878° NNW | 2025-10-22 12:11:28.164Z | 216.372° SW | 44.504° | 2025-10-22 12:16:28.164Z | 161.981° S |
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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