ultra low-luminosity dwarf galaxy or star cluster Willman 1 in Ursa Major) Wils - R.H.Wilson, jr. (double stars) Win - Winlock (double stars) Wirtz - Carl Wirtz (double stars) WISE — Wide-field Infrared Survey Explorer WISEA — AllWISE Source Catalog WISEP — Wide-field Infrared Survey Explorer Preliminary Release Source Catalog WNC / Winn — Winnecke Catalogue of Double Stars WNO - Washington Observations (double stars) (U.S. Naval Observatory, Washington D.C.) Wo — Woolley Nearby Star Catalogue Wolf — Catalogue of High Proper Motion Stars (Wolf) Worley - Charles E. Worley (double stars) WR — Catalog of Galactic Wolf-Rayet stars (Charles Wolf / Georges Rayet) X XBS — XMM-Newton, Bright Source XBSS — XMM-Newton Bright Serendipitous Survey XEST — XMM-Newton Extended Survey of the Taurus Molecular XEST-OM — XEST, Optical/UV Monitor XO - XO-Project (XO Telescope) (search for extrasolar planets) XTE — X-ray Timing Explorer XZ - XZ Catalogue of Zodiacal Stars (Richard Schmidt / Tom Van Flandern, 1977, U.S. Naval Observatory) Y Y - Young (double stars) YBS - Yale Bright Star Catalogue YZ — Yale Observatory Zone Catalog Z Z — Fritz Zwicky, Catalogue of galaxies and of clusters of galaxies ZC - Robertson's Zodiacal Catalogue (James Robertson's catalogue of 3539 zodiacal stars brighter than 9th magnitude) Zij — Islamic astronomical books that tabulates parameters used for astronomical calculations of the positions of the Sun, Moon, stars, and planets Book of Fixed Stars Tables of Toledo Zij-i Ilkhani Zij-i-Sultani See also Lists of astronomical objects List of astronomical objects named after people List of astronomy acronyms List of common astronomy symbols Glossary of astronomy Modern constellations Notes and references External links VizieR CDS Service for Astronomical Catalogues Dictionary of Nomenclature of Celestial Objects Astronomical catalogues