Books Sky Catalogue 2000, Volume 2 (2nd Edition) Softcover, Double Stars, Variable Stars, Nonstellar Objects, By Alan Hirshfeld & Roger W. Sinnott

If you're into deep-sky hunting, this is your book. Volume 2 catalogs 15 different classes of celestial objects, including tabular data for 8,000 double and multiple stars of 8th magnitude or brighter.

Ephemerides and orbits of 500 visual binaries; variables that reach or exceed magnitude 9.0; 750 open clusters; more than 120 globular clusters; nebulae; galaxies; quasars; radio andX-ray sources.

Additional tables include the Messier objects, OB star associations, and the Local Group of galaxies. Copublished by Sky Publishing and Cambridge University Press.