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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1291 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
NRL
Mission
Defense Science
Bus & Motor
NRL 24", Unknown motor
Mass
47 kg wet, 47 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
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 & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 SOLRAD 7B
1 01291U 65016D 25258.62207362 .00000007 00000-0 44080-4 0 9998
2 01291 70.0773 99.9781 0018731 125.5268 234.7588 13.94926271 78412Epoch: 2025-09-15T14:55Z
TLE epoch observation values (Epoch: 2025-09-15T14:55:47.16Z)
Latitude
-0.00002°
Longitude
-118.7925°
Altitude
921.631 km
Speed
7.387 km/s
True Right ascension
06h 39m 54s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
17:14:18
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
923.104 km
Perigee altitude
895.804 km
Semi-major axis
7,287.591 km
Eccentricity
0.00187
Inclination
70.0773°
RAAN
99.9781°
Arg. of periapsis
125.5268°
True anomaly
234.58373°
Mean anomaly
234.7588°
Eccentric anomaly
234.67124°
Mean motion
3.48873 °/min
Orbital period
103.19 mins
BSTAR
0.00004408
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Other satellites on launch #16 in the year 1965 (1965-03-09 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-09-16 01:51:53.867Z | 303.929° NW | 2025-09-16 01:55:53.867Z | 254.88° W | 22.33° | 2025-09-16 01:59:53.867Z | 208.743° SW |
| 5 mins | 2025-09-16 13:26:53.867Z | 123.802° SE | 2025-09-16 13:28:53.867Z | 101.218° ESE | 15.927° | 2025-09-16 13:31:53.867Z | 68.277° E |
| 10 mins | 2025-09-16 15:09:53.867Z | 215.409° SW | 2025-09-16 15:13:53.867Z | 283.086° WNW | 43.137° | 2025-09-16 15:19:53.867Z | 19.934° NNE |
| 10 mins | 2025-09-17 00:11:53.867Z | 343.012° N | 2025-09-17 00:16:53.867Z | 89.428° E | 42.31° | 2025-09-17 00:21:53.867Z | 146.007° SSE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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