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[vsnet-alert 1679] SN 1998aq



Dear SN fans,

  Another SN was discovered by English amateur astronomer M.
Armstrong. This SN is very remarkable! 

  According to IAUC 6875, discovery was made on Apr 13.05UT when SN
was 14.9 mag. The host galaxy is Sbc galaxy NGC 3982. The location of
the new star is R.A. = 11h56m26s.00, Decl. = +55o07'38".8 (2000.0), 
which is 18" west and 7" north of the center of the host. Type
definition has not been reported yet.  On Apr. 13.8 exposure, this new
star was about 14.5 mag, which indicates that this SN should be on the
brightening phase (very early phase).

  The distance module of the host galaxy NGC 3982 is m-M = 31.15
(from Turry's nearby galaxy catalog), which shows that this galaxy is
on the same distance with Virgo cluster.  NGC 3982 = UGC 6918 = IRAS
11538+5524 = PGC 37520 is Seyfert 2 galaxy, and also detected by
ROSAT.  Typical SNeIa on Virgo distance would be about 12 mag or so at
their maximum (without reddening), and a some (~2mag) dimmer if it is 
of other types.  Following photometries and spectroscopic observations
are strongly urged.  Especially it can provide the nature of SN on
very early phase.

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

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