Observation of Mar and Jupiter at a Wave Legth of 3.15 cm.

Abstract

A number of obseryations of Mars were made with the Naval Research Laboratory 50-foot reflector at a 3.15-cm wave length during September, 1956, when the planet was near opposition. Of these, 71 observations were selected for a quantitative reduction, which yielded a black-body temperature for Mars of 218 + 76 K (m.e.). Twenty-nine observations of Jupiter were made with the same apparatus in May, 1956. A black-body temperature of 140 + 56 K (m.e.) was found from these data. Further observations of improved accuracy were made in March 1957, when Jupiter was near opposition. A quantitative reduction of the average of 45 of these observations gave a black-body temperature for Jupiter at the 3.15-cm wave length of 145 + 26 K (m.e.).