RESEARCH DIRECTED TOWARD DEVELOPMENT OF A HOMOGENEOUS MARTIAN COORDINATE SYSTEM.

The collected results of the Mars Map Project 1958-1969, with detailed results for the final two years, are presented in 6 sections 1 the new physical ephemeris of Mars and the definition, measurement and reduction of areographic coordinates, 2 derivation of areographic coordinates from visual observations in 1941 and 1958, 3 derivation of areographic coordinates from photographic observations in 1954 and 1956, 4 reduction of all published sets of areographic coordinates of the period 1877 to 1954 to the new physical ephemeris system, 5 derivation by numerical mapping techniques of mean standard areographic coordinates of the best-observed stations in this system, 6 reduction of all meridian transit observations of the period 1877 to 1958 to the new ephemeris system, a check of the rotation period of Mars and derivation of mean longitudes for the best observed stations. Author