NSSDCA/COSPAR ID: 1971-067B
OV1-21 was one of two OV spacecraft simultaneously placed into orbit from a single launch vehicle. It carried two known experiments -- a velocity mass spectrometer that measured ion densities composition and temperature, and a VLF experiment that consisted of two 18.3-m-long ELF/VLF dipole antennas and a transreceiver that operated in 14 narrow bands and one broad band. The satellite also served as a launching platform for eight spherical research satellites (71-067D through 71-067K). OV1-21 was cylindrical in shape measuring approximately 2 m in length and 0.6 m in diameter.
Launch Date: 1971-08-07
Launch Vehicle: Atlas
Launch Site: Vandenberg AFB, United States
Mass: 70 kg
Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office
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