Tags: Artificialsatellite, Satellite.
Ariel 4 also known as UK 4 was a British ionospheric research satellite which was operated by the Science and Engineering Research Council. It was built by the British Aircraft Corporation and had a mass at launch of 100 kilograms (220 lb). It was launched in 1971 aboard an American rocket.The launch of Ariel 4 occurred at 20:47:01 GMT on 11 December 1971 from Space Launch Complex 5 at the Vandenberg Air Force Base.