SIMBAD references

T. Boles, Coddenham, England, reports the discovery of an apparent supernova (mag 15.2) on unfiltered CCD images taken on July 6.099 and 7.031 UT with a 0.35-m reflector. The new object is located at R.A. = 20h22m21s.24, Decl. = +6o25'50".3, which is approximately 5".4 west and 2".3 north of the center of NGC 6901. SN 2004da is not present on Boles' images from May 5 (limiting mag 19.5) and June 14, and it is not present on Digitized Sky Survey red (1990 Aug. 19) or blue (1988 July 8) plates.