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IAUC 6451: 1996ao, 1996ap; C/1995 O1; 4U 0115+634

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                                                  Circular No. 6451
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
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)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVAE 1996ao AND 1996ap IN ANONYMOUS GALAXIES
     The Mount Stromlo Abell Cluster Supernova Search Team (cf.
IAUC 6418) reports the discovery of two apparent supernovae on CCD
images taken by S. Chan on the Mount Stromlo 1.27-m telescope (+
Macho Camera).  SN 1996ao is located near Abell 3128 at R.A. =
3h28m03s.60, Decl. = -52 53'53".6 (equinox 2000.0), and is offset
1".8 east and 0".8 south of the nucleus of the host galaxy.  SN
1996ao is visible at mag approximately 19 on V and R CCD images
taken on Aug. 2, and was not detected on similar frames taken on
June 24; a nearby star of mag 14 has position end figures 07s.19,
56'08".7.  SN 1996ap is located near Abell 3806 at R.A. =
21h45m53s.49, Decl. = -57 08'27".3, and is offset 8".6 east and
4".0 north of the nucleus of the host galaxy.  SN 1996ap is visible
at mag approximately 19.5 on V and R CCD images taken on Aug. 11,
and was not detected on similar frames taken on Aug. 2; a nearby
star of mag 13 has position end figures 36s.63, 03".0.  CCD Images
taken with the MSSSO 2.3-m reflector on Aug. 14 show both supernovae
at apparent brightnesses similar to those on the discovery frames.
Spectra (range 350-1000 nm) obtained on Aug. 14 with the MSSSO
2.3-m Imager + Grism show the host galaxies' redshifts for SN 1996ao
and SN 1996ap, measured from H-alpha emission at the positions of
the supernovae, to be z = 0.060 and z = 0.075, respectively.  These
are coincident with the redshifts of the host clusters, Abell 3128
(z = 0.060) and Abell 3806 (z = 0.076).


COMET C/1995 O1 (HALE-BOPP)
     Total visual magnitude and coma-diameter estimates (cf. IAUC
6436):  July 21.03 UT, 5.5, 15' (J.-C. Merlin, Le Creusot, France,
7x50 binoculars); Aug. 3.93, 5.6, 15' (M. V. Zanotta, Mt. Ponna,
Italy, 7x42 binoculars); 9.87, 5.3, 20' (K. Hornoch, Lelekovice,
Czech Republic, naked eye); 11.10, 5.5, 13' (J. E. Bortle,
Stormville, NY, 10x50 binoculars; tail 1.8 deg long in p.a. 130
deg); 12.90, 5.5, 17' (A. Pereira, Carnaxide, Portugal, 9x34
binoculars); 15.29, 5.2, 0.5 deg (S. J. O'Meara, Volcano, HI, naked
eye).


4U 0115+634
     Corrigendum.  On IAUC 6450, line 13, for  1996 Aug. 5.5 UT."
read  1996 Aug. 5.583 TDB."

                      (C) Copyright 1996 CBAT
1996 August 15                 (6451)            Daniel W. E. Green

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