English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Deep-space laser ranging will be ideal for testing relativistic gravity, andmapping the solar-system to an unprecedented accuracy. ASTROD (AstrodynamicalSpace 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 ASTRODwith 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 achievedtogether with implications on astrometry and reference frame transformations.The precision planetary ephemeris derived from these missions together withsecond post-Newtonian test of relativistic gravity will serve as a foundationfor future precise astrometry observations. Relativistic frameworks arediscussed from these considerations.

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