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SOLRAD 7B, 1291

Orbit data source: Space-Track

SOLRAD 7B, 1291 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 URL

https://www.satcat.com/sats-embedded/1291?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

1291, 1965-016D

Orbit

LEO

Last TLE update

17 hours ago

Origin

National Reconnaissance Office (US)

Manufacturer

NRL

Mission

Defense Science

Bus & Motor

NRL 24", Unknown motor

Mass

47 kg wet, 47 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 + 1 Ant, 0.8 m

Radar Cross Section

0.248 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 17 hours ago

0 SOLRAD 7B
1 01291U 65016D   25221.19084515 -.00000015  00000-0  27680-4 0  9990
2 01291  70.0784 179.5484 0020675 178.0729 182.0460 13.94920641 73193

Epoch: 2025-08-09T04:34Z

TLE epoch observation values (Epoch: 2025-08-09T04:34:49.02Z)

Latitude

-0.00006°

Longitude

152.91403°

Altitude

928.817 km

Speed

7.38 km/s

True Right ascension

11h 58m 11s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-68.05691°

Longitude

87.9286°

Altitude

939.715 km

Speed

7.38 km/s

Apparent Right ascension

01h 54m 01s

Apparent Declination

-68° 34' 19"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

11:38:16

Azimuth

201.437° SSW

Elevation

-56.076°

Doppler factor

Orbital elements

Apogee altitude

924.541 km

Perigee altitude

894.406 km

Semi-major axis

7,287.611 km

Eccentricity

0.00207

Inclination

70.0784°

RAAN

179.5484°

Arg. of periapsis

178.0729°

True anomaly

182.03756°

Mean anomaly

182.046°

Eccentric anomaly

182.04178°

Mean motion

3.48871 °/min

Orbital period

103.19 mins

BSTAR

0.00002768

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

OPS 4988 (GREB 6), 1271

SURCAL 2, 1310 (Decayed)

PORCUPINE 1, 1272

THOR AGENA D R/B, 1245

OPS 4988 DEB, 12099

GGSE 3 DEB, 44043

SOLRAD 7B 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	2025-08-09 21:54:15.714Z	166.398° S	2025-08-09 21:59:15.714Z	96.467° ESE	30.741°	2025-08-09 22:04:15.714Z	41.003° NE
9 mins	2025-08-09 23:40:15.714Z	245.061° WSW	2025-08-09 23:44:15.714Z	297.861° NW	29.578°	2025-08-09 23:49:15.714Z	4.544° NNE
7 mins	2025-08-10 06:57:15.714Z	9.509° NNE	2025-08-10 07:00:15.714Z	45.831° ENE	21.402°	2025-08-10 07:04:15.714Z	95.952° ESE
10 mins	2025-08-10 08:42:15.714Z	324.38° NNW	2025-08-10 08:46:15.714Z	271.6° WNW	39.656°	2025-08-10 08:52:15.714Z	173.785° 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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Check out SOLRAD 7B, 1291 on other resources

View SOLRAD 7B, 1291 on NASA - NSSDCA Website

View SOLRAD 7B, 1291 on Heavens-Above

View SOLRAD 7B, 1291 on Keep Track

View SOLRAD 7B, 1291 on Celestrak

View SOLRAD 7B, 1291 on Gunter's Space Page

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