[vsnet-alert 5758] SN 2001X discovery (IAUC 7591)

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

SN2001X  20010227.8   170:C  BAO
SN2001X  20010302.5   152:C  SCH
SN2001X  20010206.9  <175:C  BAO
SN2001X  20010217.5  <180:C  SCH

# As the reporter mentioned, SN 2001X can reach mag 13 if it is of
# type Ia.  The reference stars are given by B. Skiff as below:

>Date: Fri, 2 Mar 2001 15:04:31 -0700 (MST)
From: Brian Skiff <bas@lowell.edu>
Subject: [vsnet-alert 5757] BVRI comparison stars near NGC 5921

     Note that SN 2001X, just discovered in NGC 5921 (IAUC 7591), has the
potential of becoming relatively bright (mag. 13) if it is a type Ia event.
Harold Corwin has measured four stars near the galaxy useful as comparisons:


Name            RA  (2000) Dec         GSC       V    B-V   V-R   V-I
NGC 5921 B   15 22 06.4  +05 02 44  0344-0407  10.32  0.40  0.24  0.49 
NGC 5921 A   15 21 53.5  +05 03 22  0344-0738  12.01  1.21  0.65  1.28  SW edge
NGC 5921 C   15 21 50.2  +05 02 18  0344-0514  12.92  0.58  0.31  0.55 
NGC 5921 b   15 21 48.6  +05 04 45  0344-0330  14.07  0.5         
                                                     just off halo 2'.0 W, sl N


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

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