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

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Identifier

1291, 1965-016D

Orbit

LEO

Country

Related business

National Reconnaissance Office (US)

Manufacturer

NRL

Mission

Spacecraft

Bus & Motor

NRL 24", Unknown motor

Mass

47 kg wet, 47 kg dry

Launch date (UTC)

1965-03-09 (62 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 + ANT, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 14 hours ago

TLE from 14 hours ago

0 SOLRAD 7B
1 01291U 65016D   26271.07876994 -.00000003  00000-0  36762-4 0  9991
2 01291  70.0816  17.5123 0022021 339.1548  20.8657 13.94985421131050

Epoch: 2026-09-28T01:53Z

TLE epoch observation values (Epoch: 2026-09-28T01:53:25.722Z)

Latitude

-0.00008°

Longitude

-17.70819°

Altitude

898.532 km

Speed

7.411 km/s

True Right ascension

01h 10m 02s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

09:43:48

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

925.295 km

Perigee altitude

893.2 km

Semi-major axis

7,287.385 km

Eccentricity

0.0022

Inclination

70.0816°

RAAN

17.5123°

Arg. of periapsis

339.1548°

True anomaly

20.95581°

Mean anomaly

20.8657°

Eccentric anomaly

20.91073°

Mean motion

3.48888 °/min

Orbital period

103.19 mins

BSTAR

0.000036762

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

GGSE 3 DEB, 44043

THOR AGENA D R/B, 1245

OPS 4988 (GREB 6), 1271

GGSE 3, 1292

OSCAR 3, 1293

SURCAL 2, 1310 (Decayed)

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SOLRAD 7B 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.
10 mins	2026-09-28 17:56:28.496Z	344.554° N	2026-09-28 18:01:28.496Z	64.107° ENE	61.436°	2026-09-28 18:06:28.496Z	140.962° SSE
7 mins	2026-09-28 19:43:28.496Z	295.177° NW	2026-09-28 19:46:28.496Z	260.987° W	19.871°	2026-09-28 19:50:28.496Z	217.569° SW
7 mins	2026-09-29 07:16:28.496Z	139.7° SSE	2026-09-29 07:19:28.496Z	104.441° ESE	21.138°	2026-09-29 07:23:28.496Z	58.313° ENE
10 mins	2026-09-29 09:00:28.496Z	224.28° SW	2026-09-29 09:04:28.496Z	280.606° WNW	54.738°	2026-09-29 09:10:28.496Z	15.664° NNE

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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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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

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

SOLRAD 7B, 1291

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 14 hours ago

TLE from 14 hours ago

TLE epoch observation values (Epoch: 2026-09-28T01:53:25.722Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

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

SOLRAD 7B Visibility forecast

Co-orbital & Co-planar RSOs

Check out SOLRAD 7B, 1291 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 14 hours ago