Denpa (satellite)

Denpa (電波, denpa; literally, "electromagnetic wave"), also known as REXS (Radiation EXperiments Satellite), was a Japanese satellite.^[3] The launch was a project of the Institute of Space and Astronautical Science of the University of Tokyo. The satellite was launched on February 19, 1972.^[4] Its objective was to conduct measurements in the magnetosphere. It failed shortly after launch; a later report concluded that the transmitter failed due to a high voltage arc.^[3]

Denpa

Operator	Institute of Space and Astronautical Science
COSPAR ID	1972-064A
SATCAT no.	06152
Start of mission
Launch date	19 August 1972, 02:40 (1972-08-19UTC02:40Z) UTC[1][2]
Rocket	M-4S
Launch site	Kagoshima Space Center, LP-M
End of mission
Decay date	19 May 1980 (1980-05-20)