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: 5 hours ago
TLE from 5 hours ago
0 OPS 4988 (GREB 6)
1 01271U 65016A 25310.32770073 .00000076 00000-0 92306-4 0 9996
2 01271 70.0787 273.2261 0020898 354.4314 114.4328 13.96607699 87695Epoch: 2025-11-06T07:51Z
TLE epoch observation values (Epoch: 2025-11-06T07:51:53.343Z)
Latitude
62.79235°
Longitude
-115.06234°
Altitude
922.069 km
Speed
7.394 km/s
True Right ascension
03h 14m 47s
True Declination
62° 39' 19"
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
09:01:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
918.818 km
Perigee altitude
888.383 km
Semi-major axis
7,281.737 km
Eccentricity
0.00209
Inclination
70.0787°
RAAN
273.2261°
Arg. of periapsis
354.4314°
True anomaly
114.65059°
Mean anomaly
114.4328°
Eccentric anomaly
114.54172°
Mean motion
3.49294 °/min
Orbital period
103.07 mins
BSTAR
0.000092306
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2025-11-06 22:55:11.602Z | 195° SSW | 2025-11-06 23:01:11.602Z | 88.107° E | 43.608° | 2025-11-06 23:06:11.602Z | 28.763° NE |
| 7 mins | 2025-11-07 00:44:11.602Z | 276.307° WNW | 2025-11-07 00:47:11.602Z | 311.7° NW | 18.04° | 2025-11-07 00:51:11.602Z | 354.762° N |
| 10 mins | 2025-11-07 07:58:11.602Z | 353.758° N | 2025-11-07 08:02:11.602Z | 47.171° ENE | 33.606° | 2025-11-07 08:08:11.602Z | 129.02° SE |
| 8 mins | 2025-11-07 09:44:11.602Z | 306.151° NW | 2025-11-07 09:48:11.602Z | 252.719° W | 26.096° | 2025-11-07 09:52:11.602Z | 203.528° 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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