|Manufacturer||Naval Research Laboratory|
|Launch mass||260 kilograms (570 lb)|
|Start of mission|
|Launch date||July 8, 1971, 22:58UTC|
|Rocket||Scout B S177C|
|Launch site||Wallops LA-3A|
|End of mission|
|Decay date||15 December 1979|
|Perigee altitude||204 kilometers (127 mi)|
|Apogee altitude||213 kilometers (132 mi)|
|Epoch||13 December 1979|
Solrad 10, also known Explorer 44, NRL-PL 165 and Explorer SE-C, was one of the SOLRAD series designed to provide continuous coverage of wavelength and intensity changes in solar radiation in the UV, soft and hard X-ray regions. The satellite also mapped the celestial sphere using a high-sensitivity X-ray detector.
Solrad 10 was launched on 8 July 1971 from Wallops Flight Facility, Virginia, with a Scout rocket. When it was launched, it had an orbit with 630 kilometres (390 mi) of apogee, 436 kilometres (271 mi) of perigee, 51.1 degrees of orbital inclination and 1 hour and 35 minutes of orbital period.
Solrad 10 was a 12-sided cylinder that measured 76 centimetres (30 in) in diameter and 58 centimetres (23 in) in height. Four symmetrically placed 17.8 by 53.3 centimetres (7.0 in × 21.0 in) solar cell panels, hinged at the central section of the structure, served as the elements of a turnstile antenna system. 18 solar sensors were mounted pointing parallel to the spin axis of the satellite, which pointed directly at the solar disk. The plane of rotation shifted about 1°/day so that a stellar detector mounted to point radially outward from the axis scanned the celestial sphere. Data from all detectors were stored in a 54 kbs core memory and telemetered on command to the NRL Satellite Operations Center at Blossom Point, Maryland. Data were also transmitted in real time at 137.710 MHz.
- "Solrad 10". NSSDCA. NASA Goddard Space Flight Center. Retrieved 19 June 2018. This article incorporates text from this source, which is in the public domain.
- McDowell, Jonathan. "Launch Log". Joanthan's Space Page. Retrieved 19 June 2018.
- "EXPLORER 44 (SOLRAD-10)". n2yo.com. Retrieved 19 June 2018.
- Peat, Chris. "Solrad 10 - Orbit". Heavens-Above GmbH. Retrieved 19 June 2018.
- Wade, Mark (2017). "Solrad". Encyclopedia Astronautica. Retrieved 19 June 2018.