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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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<iframe src="https://www.satcat.com/sats-embedded/1271?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/1271?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

1271, 1965-016A

Orbit

LEO

Last TLE update

4 hours ago

Origin

National Reconnaissance Office (US)

Manufacturer

NRL

Mission

Defense Sigint

Bus & Motor

NRL 24", Unknown motor

Mass

48 kg wet, 48 kg dry

Launch date (UTC)

1965-03-09 (60 years ago)

Launch vehicle

THOR SLV-2 AGENA D

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Sphere, 0.5 m

Radar Cross Section

0.196 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 4 hours ago

0 OPS 4988 (GREB 6)
1  1271U 65016A   25192.20423002  .00000007  00000-0  42577-4 0  9997
2  1271  70.0784 165.0339 0019864 165.3799 205.9729 13.96579484 71765

Epoch: 2025-07-11T04:54Z

TLE epoch observation values (Epoch: 2025-07-11T04:54:05.473Z)

Latitude

10.53149°

Longitude

165.99468°

Altitude

920.247 km

Speed

7.386 km/s

True Right ascension

11h 15m 30s

True Declination

10° 28' 16"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

61.51755°

Longitude

-59.83861°

Altitude

907.104 km

Speed

7.409 km/s

Apparent Right ascension

11h 00m 08s

Apparent Declination

53° 18' 17"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

21:06:33

Azimuth

343.384° N

Elevation

6.392°

Doppler factor

Orbital elements

Apogee altitude

918.163 km

Perigee altitude

889.234 km

Semi-major axis

7,281.836 km

Eccentricity

0.00199

Inclination

70.0784°

RAAN

165.0339°

Arg. of periapsis

165.3799°

True anomaly

Unknown

Mean anomaly

205.9729°

Eccentric anomaly

Unknown

Mean motion

3.49287 °/min

Orbital period

103.07 mins

BSTAR

0.000042577

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Other satellites on launch #16 in the year 1965 (1965-03-09 UTC)

SURCAL 2, 1310 (Decayed)

PORCUPINE 1, 1272

THOR AGENA D R/B, 1245

OPS 4988 DEB, 12099

GGSE 3 DEB, 44043

OPS 4988 (GREB 6) Visibility forecast

Observer location: undefined°, undefined°

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	2025-07-11 08:49:56.837Z	346.156° N	2025-07-11 08:55:56.837Z	74.472° E	36.629°	2025-07-11 09:00:56.837Z	134.395° SE
7 mins	2025-07-11 10:37:56.837Z	294.646° NW	2025-07-11 10:40:56.837Z	254.018° W	22.112°	2025-07-11 10:44:56.837Z	208.408° SW
5 mins	2025-07-11 22:10:56.837Z	124.116° SE	2025-07-11 22:12:56.837Z	101.823° ESE	15.784°	2025-07-11 22:15:56.837Z	68.944° E
10 mins	2025-07-11 23:53:56.837Z	214.951° SW	2025-07-11 23:57:56.837Z	287.841° WNW	43.379°	2025-07-12 00:03:56.837Z	20.254° NNE

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Check out OPS 4988 (GREB 6), 1271 on other resources

View OPS 4988 (GREB 6), 1271 on NASA - NSSDCA Website

View OPS 4988 (GREB 6), 1271 on Heavens-Above

View OPS 4988 (GREB 6), 1271 on Keep Track

View OPS 4988 (GREB 6), 1271 on Celestrak

View OPS 4988 (GREB 6), 1271 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.