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                                                  Circular No. 8512
                                                  
                                                  
                                                  
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 2005bk IN MCG +07-33-27
     R. A. Jansen and K. Tamura, Arizona State University; and N.
A. Grogin, Johns Hopkins University, report their discovery of an
apparent supernova in UBVRI CCD images obtained with the 1.8-m
Vatican Advanced Technology Telescope atop Mt. Graham.  Jansen
first found the conspicuous point-like object at R = 17.95 +/- 0.05
on two 300-s R-band images taken on Apr. 2.46 UT, it and was
confirmed on images taken by Jansen and Tamura on Apr. 4.4, 5.4,
6.4, and 7.5.  The new object is located at R.A. = 16h02m17s.04,
Decl. = +42o54'55".3 (equinox 2000.0), which is 4".5 east and 5".6
south of the center of the nucleus of MCG +07-33-27.  Nothing is
visible at this location on a Sloan Digital Sky Survey image or on
an R-band CCD image obtained by Grogin on 1995 May 31.4 with the
F. L. Whipple Observatory 1.2-m telescope (limiting mag R
approximately 21.3).  There is a nearby bright (red mag about 11,
blue mag about 13) foreground star with position end figures
09s.94, 04".6.



SUPERNOVA 2005bl IN NGC 4059
     Further to IAUC 8507, K. Shimasaki and W. Li report the LOSS
discovery of an apparent supernova on unfiltered KAIT images taken
on Apr. 14.34 (at mag 18.8) and 15.36 UT (mag 18.3).  SN 2005bl is
located at R.A. = 12h04m12s.26, Decl. = +20o24'24".8 (equinox
2000.0), which is 13".2 east and 11".4 south of the nucleus of NGC
4059.  A KAIT image taken on Mar. 11.33 showed nothing at this
position (limiting mag 19.5).



COMET 9P/TEMPEL
     J. Crovisier, P. Colom, N. Biver, D. Bockelee-Morvan, and A.
Lecacheux, Observatoire de Paris, report:  "The OH lines at 18 cm
were observed in comet 9P/Tempel (the target of the 'Deep Impact'
mission) with the Nancay radio telescope.  The average spectrum
from Mar. 20 to Apr. 14 shows detection of the 1667-MHz line with
an area of 12 +/- 2 mJy km/s, corresponding to an OH production
rate of 4 x 27 molecules/s."
     Visual total-magnitude estimates:  Mar. 8.57 UT, 12.7 (S.
Yoshida, Ibaraki, Japan, 0.40-m reflector); 11.83, 12.9 (A. Pearce,
Noble Falls, W. Australia, 0.20-m reflector); 20.18, 12.6 (N.
Biver, Poigny-la-foret, France, 0.26-m reflector); 29.87, 11.8 (A.
Baransky, Pylypovychi, Ukraine, 0.36-m reflector); Apr. 4.57, 11.5
(K. Yoshimoto, Yamaguchi, Japan, 0.25-m reflector); 10.86, 11.4 (A.
Diepvens, Balen, Belgium, 0.15-m refractor); 12.14, 11.6 (J. J.
Gonzalez, Leon, Spain, 0.20-m reflector).


                      (C) Copyright 2005 CBAT
2005 April 15                  (8512)            Daniel W. E. Green