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

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dc.creatorNi, Wei-Tou
dc.date2007-10-30
dc.date.accessioned2026-07-07T12:12:06Z
dc.date.available2026-07-07T12:12:06Z
dc.descriptionDeep-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.
dc.description5 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)
dc.identifierhttps://arxiv.org/abs/0710.5624
dc.identifierhttp://arxiv.org/abs/0710.5624
dc.identifierA Giant Step: from Milli- to Micro-Arcsecond Astrometry ed. W. Jin. I. Platais. and M.A.C. Perryman (Cambridge University Press, 2008), pp. 379-382
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/210438
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectSpace Physics
dc.titleDeep-space laser-ranging missions ASTROD (Astrodynamical Space Test of Relativity using Optical Devices) and ASTROD I for astrodynamics and astrometry
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