Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991ap%26ss.177..451s&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 177, no. 1-2, March 1991, p. 451-456.
Astronomy and Astrophysics
Astrophysics
Celestial Reference Systems, Earth-Moon System, Planet Ephemerides, Planetary Mass, Astronomical Catalogs, Astronomical Coordinates, Very Long Base Interferometry
Scientific paper
The appareant coordinates in the printed material almanacs have inconsistencies concerning the reference frame. These inconsistencies produce secular errors of about 0.001 arcsec/century in the equatorial coordinates and periodic errors of about 0.04 arcsec in the ecliptic coordinates. It is recommended that the calculation of apparent places of planets should be based on a consistent reference frame as well as on a consistent system of astronomical constants.
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