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: 23 hours ago
TLE from 23 hours ago
0 SOLRAD 7B
1 01291U 65016D 25260.98840956 .00000021 00000-0 54266-4 0 9995
2 01291 70.0769 94.9469 0018658 122.0043 238.2879 13.94926562 78747Epoch: 2025-09-17T23:43Z
TLE epoch observation values (Epoch: 2025-09-17T23:43:18.585Z)
Latitude
-0.00003°
Longitude
101.96299°
Altitude
920.902 km
Speed
7.388 km/s
True Right ascension
06h 19m 47s
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
15:12:33
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
923.05 km
Perigee altitude
895.856 km
Semi-major axis
7,287.59 km
Eccentricity
0.00187
Inclination
70.0769°
RAAN
94.9469°
Arg. of periapsis
122.0043°
True anomaly
238.10624°
Mean anomaly
238.2879°
Eccentric anomaly
238.19705°
Mean motion
3.48873 °/min
Orbital period
103.19 mins
BSTAR
0.000054266
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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 | 2025-09-18 22:38:41.520Z | 7.768° NNE | 2025-09-18 22:42:41.520Z | 55.724° ENE | 20.086° | 2025-09-18 22:46:41.520Z | 99.263° ESE |
| 9 mins | 2025-09-19 00:24:41.520Z | 324.42° NNW | 2025-09-19 00:28:41.520Z | 240.424° WSW | 41.682° | 2025-09-19 00:33:41.520Z | 171.387° S |
| 9 mins | 2025-09-19 13:42:41.520Z | 172.558° S | 2025-09-19 13:46:41.520Z | 105.433° ESE | 36.307° | 2025-09-19 13:51:41.520Z | 37.883° NE |
| 8 mins | 2025-09-19 15:28:41.520Z | 256.329° W | 2025-09-19 15:32:41.520Z | 308.942° NW | 24.835° | 2025-09-19 15:36:41.520Z | 358.241° N |
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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