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IAUC 6523: 1996bq, 1996br, 1996bs, 1996bz; 1996ca; 1996by

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IAUC number

                                                  Circular No. 6523
Central Bureau for Astronomical Telegrams
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVAE 1996bq, 1996br, 1996bs, 1996bz
     Christian Pollas, Observatoire de la Cote d'Azur (OCA),
reports his discovery of another apparent supernova in the field of
SNe 1996bq, 1996br, and 1996bs (cf. IAUC 6502):  SN 1996bz appears
at R.A. = 2h31m24s.13, Decl. = +39o43'51".3 (equinox 2000.0), which
is 2".4 west and 4".6 north of the anonymous host galaxy.
Estimated V magnitudes for SN 1996bz:  Oct. 12 UT, 21.0: (faintly
visible at limit of photograph); Nov. 3.9, about 19.3; Dec. 15.87,
20.1: (faintly visible near limit of photograph).  Nothing is
present at the location of SN 1996bz on the original Palomar Sky
Survey prints, on a recent Palomar Sky Survey B film, or on a 1995
OCA film (limiting mag about 22.0); a nearby star of mag 20.0 is
has position end figures 23s.99, 48".4, and a second nearby star (V
about 15.5) has end figures 21s.86, 53".9.
     Pollas further notes that the Dec. 15.87 film also shows SN
1996bs at V about 19.5 and SN 1996bq near the limit at V about
20.0; SN 1996br is no longer visible.

SUPERNOVA 1996ca IN NGC 7300
     S. Nakano, Sumoto, Japan, reports the discovery by Masakatsu
Aoki, Tsukioka Cho, Toyama, of a supernova (mag 16.5) on unfiltered
CCD frames taken on Dec. 15.462 UT with a 0.43-m f/6 reflector.  SN
1996ca is located at R.A. = 22h30m59s.26, Decl. = -13o59'50".9
(equinox 2000.0), which is 8".7 west and 20".5 north of the center
of NGC 7300.  No star appears at this location on numerous patrol
frames up through Dec. 3.
     P. Garnavich and R. Kirshner, Harvard-Smithsonian Center for
Astrophysics, report that P. Berlind obtained a spectrogram of SN
1996ca on Dec. 17.1 UT with the 1.5-m Tillinghast telescope at the
F. L. Whipple Observatory on Mount Hopkins; the spectrum shows this
to be a type-Ia supernova, 3-5 days past maximum.  Narrow emission
lines from the host galaxy indicate a recession velocity of 5100

SUPERNOVA 1996by IN UGC 3379
     Weidong Li, Beijing Astronomical Observatory, reports the
following precise position for SN 1996by (cf. IAUC 6522):  R.A. =
5h58m24s.96, Decl. = +68o27'12".1 (equinox 2000.0).

                      (C) Copyright 1996 CBAT
1996 December 17               (6523)            Daniel W. E. Green

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