Testing Einstein's Theory of Gravity by Analyzing Lunar Laser Ranging Data
Abstract
Lunar Laser Ranging data of more than 20 years have been used to accurately determine parameters of the earth-moon system (e.g., the mass of the system, the lunar tidal acceleration etc.), the station-reflector geometry, and other physical parameters like the solar quadrupole moment. In addition to these, parameters suitable for testing metric theories of gravity in the first post-Newtonian approximation have been determined with great accuracy. These are the parameterized post-Newtonian parameters gamma and beta, the Nordtvedt parameter, the geodetic precession of the lunar orbit, as well as a possible time variation of the gravitational constant.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 1991
- DOI:
- 10.1086/186222
- Bibcode:
- 1991ApJ...382L.101M
- Keywords:
-
- Earth-Moon System;
- Einstein Equations;
- Gravitation Theory;
- Laser Range Finders;
- Lunar Rangefinding;
- Ephemeris Time;
- Geodesy;
- Precession;
- Relativistic Theory;
- Tides;
- Astronomy;
- EARTH: GENERAL;
- FUNDAMENTAL CONSTANTS;
- MOON;
- RELATIVITY;
- SOLAR SYSTEM: GENERAL;
- SUN: INTERIOR