Variety of relativistic time scales in the Solar system

Abstract

Given recent plans of several space agencies to bring high-precision atomic clocks both in space around the Moon and to the Moon surface within several years from now, it necessary to discuss and x the relativistic de nition coordinates for the Moon and in particular, to carefully discuss all aspects on the relativistic time suitable for the Moon and its surrounding. The IAU 2000 framework for relativistic reference systems establishes the fundamental principles for physically adequate reference systems and should be used to de ne the adequate relativistic reference systems for each solar system body.