The PPM Star Catalogue is the successor of the SAO Catalogue. It conta
ins precise positions and proper motions of 378 910 stars on the whole
sky in the J2000 / FK5 coordinate system. The 90 000 Stars Supplement
presented here provides astrometric data of similar quality for about
90 000 additional stars on the southern hemisphere. Magnetic tapes co
ntaining PPM and its Supplement can be obtained from the Centre de Don
nees Astronomiques de Strasbourg (CDS), France and the Astronomical Da
ta Centre at Goddard Space Flight Centre, Greenbelt, U.S.A.