Luni-solar precession derived from proper motions of PPM

V.V. Vityazev, A.S. Tsvetkov

Research output

Abstract

From the proper motions of 222185 PPM stars the correction to the value of the IAU 1976 luni-solar precession was found to be ¡0:38§0:05 arcsec per century. The value is in a good agreement with the result obtained from VLBI observations of extragalactic radio sources. (Walter and C.Ma, 1994). In the magnitude ranges 6-8 and 10-13 the component ¹ cos(±) yields the correction to precession which strongly deviates from the above mentioned value. The reduction procedure to free the proper motions of the PPM of quasi-precessional magnitude equation and to make them compatible with the newest value of the luni-solar precession is proposed.
Original languageUndefined
Title of host publicationProceedings "Modern problems and methods of astrometry and geodynamics", St. Petersburg, 1996
Pages1-6
Publication statusPublished - 1996

Cite this

Vityazev, V. V., & Tsvetkov, A. S. (1996). Luni-solar precession derived from proper motions of PPM. In Proceedings "Modern problems and methods of astrometry and geodynamics", St. Petersburg, 1996 (pp. 1-6)