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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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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 (61 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

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 18 hours ago

TLE from 18 hours ago

0 SOLRAD 7B
1 01291U 65016D   26136.84815746 -.00000028  00000-0  18239-4 0  9990
2 01291  70.0789 302.8905 0020521 169.1070 191.0485 13.94971818112336

Epoch: 2026-05-16T20:21Z

TLE epoch observation values (Epoch: 2026-05-16T20:21:20.804Z)

Latitude

0.00004°

Longitude

122.99459°

Altitude

928.26 km

Speed

7.381 km/s

True Right ascension

20h 11m 33s

True Declination

0° 00' 00"

Sunlit

Object was in daylight 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

22:57:26

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

924.25 km

Perigee altitude

894.341 km

Semi-major axis

7,287.432 km

Eccentricity

0.00205

Inclination

70.0789°

RAAN

302.8905°

Arg. of periapsis

169.107°

True anomaly

191.00355°

Mean anomaly

191.0485°

Eccentric anomaly

191.02601°

Mean motion

3.48884 °/min

Orbital period

103.19 mins

BSTAR

0.000018239

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

GGSE 3 DEB, 44043

SURCAL 2, 1310 (Decayed)

OPS 4988 (GREB 6), 1271

SECOR 3, 1208

OSCAR 3, 1293

PORCUPINE 1, 1272

THOR AGENA D R/B, 1245

GGSE 3, 1292

GGSE 2, 1244

OPS 4988 DEB, 12099

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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.
9 mins	2026-05-17 20:59:43.487Z	357.468° N	2026-05-17 21:04:43.487Z	60.76° ENE	26.158°	2026-05-17 21:08:43.487Z	110.124° ESE
9 mins	2026-05-17 22:45:43.487Z	317.955° NNW	2026-05-17 22:49:43.487Z	266.203° W	33.786°	2026-05-17 22:54:43.487Z	187.835° SSW
10 mins	2026-05-18 12:03:43.487Z	190.681° SSW	2026-05-18 12:08:43.487Z	79.361° E	42.475°	2026-05-18 12:13:43.487Z	29.77° NE
7 mins	2026-05-18 13:51:43.487Z	276.295° WNW	2026-05-18 13:54:43.487Z	312.975° NW	19.255°	2026-05-18 13:58:43.487Z	355.928° N

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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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Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

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: 18 hours ago

TLE from 18 hours ago

TLE epoch observation values (Epoch: 2026-05-16T20:21:20.804Z)

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: 18 hours ago