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Circinus(ser -să-nŭs) (Compasses) A small constellation in the southern hemisphere near Centaurus, lying in the Milky Way. The brightest star is of 3rd magnitude. Circinus X-1 is an X-ray burst source. Abbrev.: Cir; genitive form: Circini; approx. position: RA 15h, dec –60°; area: 93 sq deg.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
(Compasses), a constellation of the southern hemisphere. Its brightest star has a visual magnitude of 3.2. Circinus is not visible in the USSR. (SeeSTELLAR SKY.)
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
A constellation, right ascension 15 hours, declination 60°S. Abbreviated Cir. Also known as Compasses.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.