SIMBAD references

P. Luckas, Perth, W. Australia; O. Trondal, Oslo, Norway; and M. Schwartz, Patagonia, AZ, report the discovery of an apparent supernova on unfiltered CCD frames taken with the 0.35-m Tenagra telescope at Perth on Feb. 17.54 (at mag 16.2) and 19.52 UT (mag 16.0) in the course of the Tenagra Observatory Supernova Search. SN 2006ai is located at R.A. = 7h29m52s.16, Decl. = -84o02'20".5 (equinox 2000.0), which is 2".5 west and 1".8 south of the center of ESO 5-G9 (which itself has position end figures 29m53s.77, 02'18".7). Nothing was visible at the position of 2006ai on an image taken by Luckas on 2005 Dec. 16.79 (limiting magnitude about 18.5).