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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

2 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 2 hours ago

0 OPS 4988 (GREB 6)
1  1271U 65016A   25182.24881630 -.00000006  00000-0  33452-4 0  9997
2  1271  70.0776 186.2554 0020494 178.7784 193.0068 13.96577920 70375

Epoch: 2025-07-01T05:58Z

TLE epoch observation values (Epoch: 2025-07-01T05:58:17.728Z)

Latitude

10.98354°

Longitude

-178.85292°

Altitude

921.781 km

Speed

7.385 km/s

True Right ascension

12h 41m 04s

True Declination

10° 55' 15"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

26.92741°

Longitude

-13.62916°

Altitude

895.1 km

Speed

7.414 km/s

Apparent Right ascension

02h 51m 25s

Apparent Declination

-8° 13' 37"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

19:59:31

Azimuth

88.049° E

Elevation

-15.204°

Doppler factor

Orbital elements

Apogee altitude

918.627 km

Perigee altitude

888.781 km

Semi-major axis

7,281.841 km

Eccentricity

0.00205

Inclination

70.0776°

RAAN

186.2554°

Arg. of periapsis

178.7784°

True anomaly

Unknown

Mean anomaly

193.0068°

Eccentric anomaly

Unknown

Mean motion

3.49286 °/min

Orbital period

103.07 mins

BSTAR

0.000033452

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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.
7 mins	2025-07-01 09:54:25.176Z	12.646° NNE	2025-07-01 09:57:25.176Z	46.535° ENE	17.525°	2025-07-01 10:01:25.176Z	90.53° ESE
10 mins	2025-07-01 11:39:25.176Z	331.024° NNW	2025-07-01 11:43:25.176Z	286.867° WNW	43.644°	2025-07-01 11:49:25.176Z	163.883° S
8 mins	2025-07-02 00:57:25.176Z	161.209° S	2025-07-02 01:00:25.176Z	117.605° SE	31.549°	2025-07-02 01:05:25.176Z	44.42° NE
9 mins	2025-07-02 02:42:25.176Z	247.712° W	2025-07-02 02:46:25.176Z	301.97° NW	28.713°	2025-07-02 02:51:25.176Z	5.012° 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.