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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: 8 hours ago

TLE from 8 hours ago

0 SOLRAD 7B
1 01291U 65016D   25346.96456060  .00000055  00000-0  79814-4 0  9990
2 01291  70.0796 272.1688 0020938 357.4151   2.6843 13.94946890 90731

Epoch: 2025-12-12T23:08Z

TLE epoch observation values (Epoch: 2025-12-12T23:08:58.035Z)

Latitude

-0.00003°

Longitude

-156.97165°

Altitude

898.414 km

Speed

7.411 km/s

True Right ascension

18h 08m 40s

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

05:21:37

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

924.641 km

Perigee altitude

894.123 km

Semi-major axis

7,287.519 km

Eccentricity

0.00209

Inclination

70.0796°

RAAN

272.1688°

Arg. of periapsis

357.4151°

True anomaly

2.69557°

Mean anomaly

2.6843°

Eccentric anomaly

2.68993°

Mean motion

3.48878 °/min

Orbital period

103.19 mins

BSTAR

0.000079814

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

OPS 4988 DEB, 12099

GGSE 3 DEB, 44043

PORCUPINE 1, 1272

THOR AGENA D R/B, 1245

OPS 4988 (GREB 6), 1271

GGSE 3, 1292

GGSE 2, 1244

SECOR 3, 1208

SURCAL 2, 1310 (Decayed)

OSCAR 3, 1293

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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	2025-12-13 19:54:14.204Z	174.795° S	2025-12-13 19:59:14.204Z	114.463° SE	33.665°	2025-12-13 20:04:14.204Z	41.412° NE
9 mins	2025-12-13 21:41:14.204Z	250.913° W	2025-12-13 21:45:14.204Z	303.326° NW	26.668°	2025-12-13 21:50:14.204Z	4.102° NNE
8 mins	2025-12-14 04:58:14.204Z	9.976° NNE	2025-12-14 05:01:14.204Z	49.404° ENE	24.18°	2025-12-14 05:06:14.204Z	108.359° ESE
10 mins	2025-12-14 06:43:14.204Z	319.721° NNW	2025-12-14 06:47:14.204Z	258.838° W	37.558°	2025-12-14 06:53:14.204Z	178.196° S

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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: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2025-12-12T23:08:58.035Z)

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: 8 hours ago