SIMBAD references

Further to IAUC 8341, T. Boles reports his discovery of an apparent supernova (mag 17.1) on unfiltered CCD images taken on May 18.981 and 19.896 UT with a 0.35-m reflector. The new object is located at R.A. = 15h54m52s.03, Decl. = +21o07'11".0 (equinox 2000.0), which is approximately 1".2 west and 10".5 north of the center of UGC 10089. SN 2004bu is not present on Boles' images from Mar. 20 and Jan. 29 (limiting mag 19.5) or on Digitized Sky Survey red (1992) or blue (1993) plates.