Corrections to the Lunisolar Precession and the Motion of the Equinox from Proper Motions of Cepheids

Details Corrections to the Lunisolar Precession and the Motion of the Equinox from Proper Motions of Cepheids Corrections to the Lunisolar Precession and the Motion of the Equinox from Proper Motions of Cepheids

Oct 1971

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1971cemec...4..273s&link_type=abstract

IAU System of Astronomical Constants, Proceedings of IAU Colloq. 9, held in Heidelberg, August, 1970. Edited by T. Lederle and B

Astronomy and Astrophysics

Astronomy

Scientific paper

Corrections to Newcomb's lunisolar precession and to motion of the equinox are evaluated from proper motions of 77 Cepheids, employing recently determined values of their distances. Results are diverse, depending on the weighting method. If the effect of the cosmic dispersion is neglected andω 0 is imposed to be 25 km/s/kpc, thenΔp 1=1″.1±0″.2 andΔλ' +Δe = 1″.0 ± 0″.1 per century in the FK4 system.

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