Tags: Artificialsatellite, Satellite.
OSO 3 (Orbiting Solar Observatory 3) or Third Orbiting Solar Observatory (known as OSO C before launch) was launched on March 8 1967 into a nearly circular orbit of mean altitude 550 km inclined at 33° to the equatorial plane. Its on-board tape recorder failed on June 28 1968 allowing only the acquisition of sparse real-time data during station passes thereafter; the last data were received on November 10 1969.
