IMS/Satellite Situation Center report. Daily summary for IMS highaltitude satellites, days 182365 1977
Abstract
The orbital positions of a number of highaltitude satellites, capable of making magnetospheric measurements in the second half of 1977, are described. The following satellites are considered: Vela 5A, Vela 5B, Vela 6A, Vela 6B, Solrad 11A, Solrad 11B, Hawkeye 1, Prognoz 5, Explorer 47, Explorer 50, and ISEEA/B. The orbit elements used for generating the satellite ephemeris are shown. Complete presentations of the positions of these satellites for the second half of 1977 are given, as well as the IMS/SSC special periods. Detailed plots illustrating these periods are provided. Timeordered tables of magnetopause crossings, bow shock crossings, neutral sheet passes, midlatitude magnetotail passes, highlatitude magnetotail passes, and Hawkeye 1 northern cusp passes are presented. Bar charts covering the second half of 1977 are given which identify thirteen special periods (Nos. 1022) based upon certain conjunctions of the highaltitude satellites.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 August 1977
 Bibcode:
 1977STIN...7732195.
 Keywords:

 Earth Magnetosphere;
 Geophysical Satellites;
 Orbit Calculation;
 Satellite Orbits;
 Charts;
 Ephemeris Time;
 Geomagnetic Tail;
 Independent Variables;
 International Magnetospheric Explorer;
 Magnetopause;
 Tables (Data);
 Vela Satellites;
 Launch Vehicles and Space Vehicles