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
Spacecraft
Bus & Motor
NRL 24", Unknown motor
Mass
47 kg wet, 47 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 SOLRAD 7B
1 1291U 65016D 25304.58615983 .00000055 00000-0 79314-4 0 9998
2 1291 70.0810 2.2644 0018582 56.6203 303.6677 13.94936825 84829Epoch: 2025-10-31T14:04Z
TLE epoch observation values (Epoch: 2025-10-31T14:04:04.209Z)
Latitude
-0.00006°
Longitude
111.11837°
Altitude
906.205 km
Speed
7.403 km/s
True Right ascension
00h 09m 03s
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
11:49:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
922.959 km
Perigee altitude
895.875 km
Semi-major axis
7,287.554 km
Eccentricity
0.00186
Inclination
70.081°
RAAN
2.2644°
Arg. of periapsis
56.6203°
True anomaly
303.49025°
Mean anomaly
303.6677°
Eccentric anomaly
303.579°
Mean motion
3.48876 °/min
Orbital period
103.19 mins
BSTAR
0.000079314
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Other satellites on launch #16 in the year 1965 (1965-03-09 UTC)
Did you know?
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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-11-01 16:30:24.763Z | 293.883° NW | 2025-11-01 16:33:24.763Z | 260.997° W | 16.612° | 2025-11-01 16:36:24.763Z | 227.767° WSW |
| 7 mins | 2025-11-02 04:03:24.763Z | 143.866° SSE | 2025-11-02 04:06:24.763Z | 107.677° ESE | 21.467° | 2025-11-02 04:10:24.763Z | 58.142° ENE |
| 10 mins | 2025-11-02 05:47:24.763Z | 227.231° WSW | 2025-11-02 05:52:24.763Z | 310.874° NW | 37.469° | 2025-11-02 05:57:24.763Z | 13.557° NNE |
| 6 mins | 2025-11-02 13:05:24.763Z | 19.025° NNE | 2025-11-02 13:08:24.763Z | 52.815° ENE | 15.563° | 2025-11-02 13:11:24.763Z | 83.73° E |
| 10 mins | 2025-11-02 14:50:24.763Z | 335.215° NNW | 2025-11-02 14:54:24.763Z | 278.483° WNW | 44.984° | 2025-11-02 15:00:24.763Z | 158.142° S |
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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