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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: 11 hours ago

TLE from 11 hours ago

0 SOLRAD 7B
1  1291U 65016D   26091.17207407  .00000000  00000-0  39083-4 0  9994
2  1291  70.0806  39.9964 0023099 227.1285 132.7881 13.94965850105967

Epoch: 2026-04-01T04:07Z

TLE epoch observation values (Epoch: 2026-04-01T04:07:47.199Z)

Latitude

-0.00006°

Longitude

148.51099°

Altitude

925.057 km

Speed

7.384 km/s

True Right ascension

02h 39m 59s

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

21:16:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

926.149 km

Perigee altitude

892.483 km

Semi-major axis

7,287.453 km

Eccentricity

0.00231

Inclination

70.0806°

RAAN

39.9964°

Arg. of periapsis

227.1285°

True anomaly

132.98197°

Mean anomaly

132.7881°

Eccentric anomaly

132.88507°

Mean motion

3.48883 °/min

Orbital period

103.19 mins

BSTAR

0.000039083

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

THOR AGENA D R/B, 1245

OPS 4988 (GREB 6), 1271

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.
11 mins	2026-04-01 21:26:43.465Z	181.249° SSW	2026-04-01 21:31:43.465Z	120.549° SE	37.84°	2026-04-01 21:37:43.465Z	34.853° NE
8 mins	2026-04-01 23:14:43.465Z	262.907° W	2026-04-01 23:17:43.465Z	301.366° NW	23.93°	2026-04-01 23:22:43.465Z	0.7° NNE
8 mins	2026-04-02 06:30:43.465Z	5.154° NNE	2026-04-02 06:34:43.465Z	63.597° ENE	27.03°	2026-04-02 06:38:43.465Z	112.124° ESE
9 mins	2026-04-02 08:15:43.465Z	316.275° NNW	2026-04-02 08:19:43.465Z	262.105° W	33.302°	2026-04-02 08:24:43.465Z	188.705° SSW

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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: 11 hours ago

TLE from 11 hours ago

TLE epoch observation values (Epoch: 2026-04-01T04:07:47.199Z)

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: 11 hours ago