SN 2004ex:

This SN was discovered by TOSS (Odd Trondal and Michael Schwartz) (IAUC 8418) on October 11, 2004, and was absent on September 24, 2004, so discovered rather young. LOSS data by Li et al. show this is a very young SNe, not seen on Oct. 10.

The host galaxy NGC 182 is at z=0.017549 (NED).

Fillipenko et al. (IAUC 8420) report this is a type II SN, within a few weeks of maximum.