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Celestial Mechanics and Dynamical Astronomy

, Volume 115, Issue 1, pp 81–89 | Cite as

A comparison between the precession–nutation variations in right ascension referred to the CIO and the equinox

  • Ladislav HusarEmail author
Original Article
  • 185 Downloads

Abstract

The article analyzes the precession–nutation variations in right ascension of stars after the introduction Celestial Intermediate Origin (CIO) as a new origin of the right ascensions. It points out that changes in right ascension depend not only on the motion of the origin, but also on the changes of the pole and hour circles, depending on the position of stars. This explains the apparent paradox that, for certain groups of stars, despite the almost complete elimination of the precession and nutation motion of the CIO on the equator, the magnitude of the variations in right ascension related to the CIO can exceed the magnitude of the classic variations referred to the equinox.

Keywords

Celestial intermediate origin (CIO) Equation of the origins Right ascension variations Celestial intermediate pole (CIP) 

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Copyright information

© Springer Science+Business Media Dordrecht 2012

Authors and Affiliations

  1. 1.Faculty of Civil EngineeringSlovak University of TechnologyBratislavaSlovak Republic

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