[vsnet-alert 1725] SN 1998bn

[Yamaoka Hitoshi <yamaoka@rc.kyushu-u.ac.jp>]

Dear SN observers,

  According to IAUC 6886, Lick group has discovered another SN named
1998bn in NGC 4462. It was appeared on CCD image obtained on Apr.
17.3, but it has not been recognized until new image was taken on Apr.
27.3. It is very unfortunate situation. 

  The magnitude was about 17.4 on Apr 17.3, and has remarkably rised
to 13.7 on Apr 27.3. The location of the new star is R.A. =
12h29m18s.88, Decl. = -23o09'49".2 (2000.0), which is about 32" west
and 10" north of the core of NGC 4462. 

  The host galaxy is of SBab type and, as Taichi mentioned, is a
nearby one. Turry's catalog gives that m-M = 32.21, which indicates
that typical SN Ia on this distance will shine at 13.4 mag on its
maximum. Spectroscopy was not reported, but it should be very likely
to be of type Ia, SN locates on the west arm of the host, slightly
near side to the center. 

  Though it is a great regret that we have missed the early phase of
this SN, the followup photometry and spectroscopy are doubtlessly 
encouraged. The preliminary comparison star chart was broadcasted on
vsnet and isn.

Sincerely,
Hitoshi Yamaoka, Kyushu Univ., Japan
yamaoka@rc.kyushu-u.ac.jp

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