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

Published online by Cambridge University Press:  12 April 2016

A.M. Sinzi
A.M. Sinzi*
Affiliation:
Astronomical Division, Hydrographic Department, Tokyo, Japan

Abstract

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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 and ω0 is imposed to be 25 km/s/kpc, then Δp1 = 1.″1 ±0.″2 and Δλ′ + Δe = 1.″0 ±0.″1 per century in the FK4 system.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 9: The IAU System of Astronomical Constants , October 1971 , pp. 273 - 276
Copyright
Copyright © Reidel 1971

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