SIMBAD references

L. A. G. Monard, Pretoria, South Africa, reports his discovery of a supernova (mag 14.7) on unfiltered CCD images taken on Feb. 21.979 UT. The new object is located at R.A. = 13h16m58s.18, Decl. = -16o37'52".7 (equinox 2000.0), which is 2" west and 11" north of the center of the galaxy NGC 5054. Nothing was visible at this location on images taken by Monard on 2003 Dec. 29.10 (limiting mag 18.5) and 2004 Feb. 1.15 (limiting mag 18.0) or on Digitized Sky Survey images. A confirming unfiltered CCD image taken by T. Vanmunster (Landen, Belgium) with a 0.35-m reflector on Feb. 24.13 shows SN 2004ab at mag 14.5.