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Group Description:	First published in 1930 as the Yale Catalog of Bright Stars, this catalog contained information on all stars in the <a href="http://hiddenphonenumbers.co.uk/sky-hidden-number/" rel="tag" >Sky</a> brighter than visual magnitude 6.5 in the Harvard Revised Photometry Catalogue. The list was revised in 1983 with the publication of a supplement that listed additional stars down to magnitude 7.1. The catalog detailed each star's coordinates, proper motions, photometric data, spectral types, and other useful information (<a href="http://www.msnhill.com/" rel="tag" rel="nofollow">source</a> : www.wikipedia.com)