Daily summary for IMS high-altitude satellites, days 1-181 1977

A description of the orbital positions is provided for a number of high altitude satellites capable of making magnetospheric measurements in the first half of 1977 as part of the International Magnetospheric Study (IMS). Six artificial satellites -- Vela 5B, IMP-H, IMP-J, Solrad 11A, Solrad 11B, and Hawkeye 1 -- have been chosen along with the moon. The daily position summary of the satellites includes data tables which provide the crossing times of the bow shock and magnetopause, as well as the entry and exit times from the cusp, the high latitude tail, the midlatitude tail, and the neutral sheet region.