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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

12 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 12 hours ago

0 SOLRAD 7B
1 01291U 65016D   25199.46345718 -.00000015  00000-0  27655-4 0  9991
2 01291  70.0768 225.7376 0022007 205.8903 154.1104 13.94917930 70169

Epoch: 2025-07-18T11:07Z

TLE epoch observation values (Epoch: 2025-07-18T11:07:22.7Z)

Latitude

0.00004°

Longitude

122.37848°

Altitude

928.204 km

Speed

7.381 km/s

True Right ascension

15h 02m 57s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

-26.61385°

Longitude

110.91531°

Altitude

930.297 km

Speed

7.381 km/s

Apparent Right ascension

17h 30m 17s

Apparent Declination

-61° 44' 55"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

11:49:34

Azimuth

146.071° SSE

Elevation

-32.324°

Doppler factor

Orbital elements

Apogee altitude

925.521 km

Perigee altitude

893.445 km

Semi-major axis

7,287.62 km

Eccentricity

0.0022

Inclination

70.0768°

RAAN

225.7376°

Arg. of periapsis

205.8903°

True anomaly

154.22024°

Mean anomaly

154.1104°

Eccentric anomaly

154.16535°

Mean motion

3.48871 °/min

Orbital period

103.19 mins

BSTAR

0.000027655

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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.
11 mins	2025-07-19 02:43:02.400Z	181.708° SSW	2025-07-19 02:48:02.400Z	122.899° SE	37.875°	2025-07-19 02:54:02.400Z	34.886° NE
8 mins	2025-07-19 04:31:02.400Z	262.475° W	2025-07-19 04:34:02.400Z	300.315° NW	23.721°	2025-07-19 04:39:02.400Z	0.199° NNE
8 mins	2025-07-19 11:47:02.400Z	4.548° NNE	2025-07-19 11:51:02.400Z	62.725° ENE	27.112°	2025-07-19 11:55:02.400Z	112.059° ESE
9 mins	2025-07-19 13:32:02.400Z	316.392° NNW	2025-07-19 13:36:02.400Z	263.273° W	32.987°	2025-07-19 13:41:02.400Z	189.176° SSW

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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