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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

14 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 14 hours ago

0 OPS 4988 (GREB 6)
1  1271U 65016A   25118.02351839  .00000138  00000-0  13749-3 0  9996
2  1271  70.0801 323.1635 0023207 257.1393 216.2541 13.96564539 61410

Epoch: 2025-04-28T00:33Z

Definitive object data (Epoch: 2025-04-28T00:33:51.988Z)

Latitude

59.86779°

Longitude

-119.94164°

Altitude

928.935 km

Speed

7.386 km/s

True Right ascension

06h 59m 04s

True Declination

59° 43' 18"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

34.01009°

Longitude

-96.85861°

Altitude

916.104 km

Speed

7.394 km/s

Apparent Right ascension

09h 08m 30s

Apparent Declination

0° 03' 32"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

21:54:27

Azimuth

17.595° NNE

Elevation

-48.788°

Doppler factor

Orbital elements

Apogee altitude

920.649 km

Perigee altitude

886.851 km

Semi-major axis

7,281.887 km

Eccentricity

0.0023207

Inclination

70.0801°

RAAN

323.1635°

Arg. of periapsis

257.1393°

True anomaly

216.0972°

Mean anomaly

216.2541°

Eccentric anomaly

216.17562°

Mean motion

3.49283 °/min

BSTAR

0.00013749

Orbital period

103.07 mins

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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.
10 mins	2025-04-28 15:37:40.869Z	225.152° WSW	2025-04-28 15:42:40.869Z	298.906° NW	38.411°	2025-04-28 15:47:40.869Z	12.633° NNE
6 mins	2025-04-28 22:55:40.869Z	19.431° NNE	2025-04-28 22:57:40.869Z	41.06° NE	15.39°	2025-04-28 23:01:40.869Z	83.262° E
10 mins	2025-04-29 00:39:40.869Z	335.916° NNW	2025-04-29 00:44:40.869Z	137.611° SSE	44.974°	2025-04-29 00:49:40.869Z	156.888° SSE
9 mins	2025-04-29 13:57:40.869Z	157.553° S	2025-04-29 14:01:40.869Z	103.926° ESE	27.783°	2025-04-29 14:06:40.869Z	45.051° ENE

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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.