[FPSPACE] ASTROD (Astrodynamical Space Test of Relativity using Optical Devices)

[LARRY KLAES]

Deep-space laser-ranging missions ASTROD (Astrodynamical Space Test of 
Relativity using Optical Devices) and ASTROD I for astrodynamics and 
astrometry

Authors: Wei-Tou Ni

(Submitted on 30 Oct 2007)

Abstract: Deep-space laser ranging will be ideal for testing relativistic 
gravity, and mapping the solar-system to an unprecedented accuracy. ASTROD 
(Astrodynamical Space Test of Relativity using Optical Devices) and ASTROD I 
are such missions. ASTROD I is a mission with a single spacecraft; it is the 
first step of ASTROD with 3 spacecraft.

In this talk, after a brief review of ASTROD and ASTROD I, we concentrate of 
the precision of solar astrodynamics that can be achieved together with 
implications on astrometry and reference frame transformations. The 
precision planetary ephemeris derived from these missions together with 
second post-Newtonian test of relativistic gravity will serve as a 
foundation for future precise astrometry observations. Relativistic 
frameworks are discussed from these considerations.

Comments:  5 pages, 2 figures, 2 tables, presented to IAU Symposium No. 248, 
A Giant Step: from Milli- to Micro-Arcsecond Astrometry (Shanghai, October 
15-19, 2007)

Subjects:  Astrophysics (astro-ph)

Cite as:  arXiv:0710.5624v1 [astro-ph]

Submission history

From: Wei-Tou Ni [view email]

[v1] Tue, 30 Oct 2007 12:14:08 GMT (283kb)

http://arxiv.org/abs/0710.5624