Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990pabei...8..215x&link_type=abstract
Prog. Astron., Vol. 8, No. 3, p. 215 - 221
Astronomy and Astrophysics
Astronomy
Earth Rotation
Scientific paper
The exact description of the Earth's rotation requires the choice of a reference point on the equator both in space and the Earth. Guinot has proposed a "non-rotating origin" (NRO) to serve as such a reference point. In this paper, some dynamical problems are presented, such as the dynamical definition of the NRO, its movement in inertial space, errors in the position of a celestial body with the NRO as reference point, etc. Furthermore, some discussions about the improvement of the celestial reference system on sidereal angle are put forward.
Xia Yi-Fei
Xiao Nai-Yuan
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