Simultaneous magnetic field variations at the earth's surface and at synchronous, equatorial distance. Part I. bay-associated events

The ATS—1 spacecraft was placed in a synchronous orbit on 6 December 1966. The spin-stabilized satellite corotates with the earth in the equatorial plane at a geocentric distance of 6.6 RE and a longitude of 150° W. The satellite is maintained with a spin rate of 97 rpm and with its spin axis parallel to the earth's spin axis.