Relation between a function of the right ascension and the angular distance to the vertex for Hyades stars |
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| Authors: | M A Sharaf M I Nouh A S Saad |
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| Institution: | 1. Department of Astronomy, Faculty of Science, King Abdul Aziz University, Jeddah, Saudi Arabia
2. Department of Astronomy, National Research Institute of Astronomy and Geophysics, Helwan, Egypt
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| Abstract: | In this paper, relation was developed for Hyades stars between a function of the right ascensions and the angular distances from the vertex. The precision criteria of this relation are very satisfactory and a correlation coefficient value of ? 1 was found which proves that the attributes are completely related linearly. The importance of this relation was illustrated through its usages as: ?a criterion for membership of the cluster, ?a generating function for evaluating some parameters of the cluster, ?a generating function for the initial values of the vertex equatorial coordinates which could then be improved iteratively using the procedure of differential corrections. |
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