IAU Central Bureau for Astronomical Telegrams

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IAUC 7866: 2002bz; 2002ca; 2002by

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                                                  Circular No. 7866
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


SUPERNOVA 2002bz IN MCG +05-34-33
     T. Puckett, Mountain Town, GA; and S. Gauthier, London, ON,
report the discovery of an apparent supernova (mag 16.9) on an
unfiltered CCD frame (limiting mag 19.0) taken with the Puckett
Observatory 0.35-m automated supernova patrol telescope on Apr.
3.39 UT.  SN 2002bz is located at R.A. = 14h24m40s.52, Decl. =
+26o37'34".7 (equinox 2000.0), which is 0".1 west and 3".7 north of
the center of MCG +05-34-33.  The new object was also present and
confirmed on unfiltered CCD frames taken on Apr. 4.17, but it does
not appear on unfiltered images taken by Puckett on Feb. 19 and
Mar. 14 (limiting mag about 20.5) or on Palomar Sky Survey images
taken on 1950 Apr. 12 (limiting mag about 20.0) and on 1993 Mar. 30
and 1996 Apr. 19 (limiting mag about 21.0).


SUPERNOVA 2002ca IN UGC 8521
     Independent discoveries of an apparent supernova in UGC 8521
have been reported from unfiltered CCD images taken by Puckett and
B. Kerns, Stanton, ND, with the 0.35-m telescope (as above) on Apr.
3.29 and 4.41 UT (mag 17.3) and by W. D. Li, University of
California at Berkeley, and LOTOSS (cf. IAUC 7514) with the 0.8-m
Katzman Automatic Imaging Telescope (KAIT) on Apr. 3.3 and 4.3 (mag
about 17.3).  Puckett reports the new object at R.A. = 13h32m31s.51,
Decl. = +1 50'42".5 (equinox 2000.0), which is 11".5 east and 9".8
south of the center of UGC 8521; Li provides position end figures
31s.51, 41".7.  Approximate limiting magnitudes for images showing
nothing at this position:  1984 Mar. 7, 20.0 (Palomar Sky Survey,
reported by Puckett); 1996 Mar. 25 and 1997 Apr. 8, 21.0 (ibid.);
2002 Feb. 17 and 23, 20.0 (Puckett, CCD); Mar. 5.3, 19.0 (KAIT).


SUPERNOVA 2002by IN ESO 139-G34
     N. Suntzeff, Cerro Tololo Interamerican Observatory (CTIO),
reports that spectra (range 380-540 nm) of SN 2002by (cf. IAUC 7865)
were obtained by C. Gronwall and H. Ford (Johns Hopkins University)
with the CTIO 1.5-m telescope (+ facility spectrograph) on Apr. 3.4
UT.  The reduced spectrophotometry shows that this object is a
supernova, but the small wavelength coverage and the weakness of
the features do not allow a specific classification.  The spectrum
is possibly consistent with a type-I supernova, but redder spectra
will be needed to give an definitive classification.

                      (C) Copyright 2002 CBAT
2002 April 4                   (7866)            Daniel W. E. Green

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