SN 2004dj:
This SN was discovered by K. Itagaki
(IAUC 8377) on July 31. There is no prior photometry obtained
recently, so no limit on age at discovery. At V~11 mag, this
SN is the brightest in the last decade (since 1993J).
The host galaxy
NGC 2403
is at z=0.000437 (NED).
A spectrum obtained by Patat and collaborators
(IAUC 8378) on Aug 3, 2004, indicates it is a type II-P SN
This SN is the target of an HST follow-up campaign on DD time,
PI Filippenko.
The SN has been detected in the radio
(IAUC 8379)
and has been observed in X-rays by
XMM
and Chandra
(IAUC 8390)