Circular No. 8766

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                                                  Circular No. 8766




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)



SUPERNOVAE 2006jf-2006ld
     J. Frieman, on behalf of the Sloan Digital Sky Survey II
collaboration, reports the discovery of 48 new supernovae (2006jf-
2006kd and 2006kg-2006lc; magnitude range g = 19.8-23.3) on images taken
during Sept. 11-Oct. 21 (details on CBETs 680 and 688).  All appear to
be apparent or possible type-Ia supernovae except for 2006jo and 2006jx
(apparent or possible type Ib); 2006kg, 2006kh, 2006kn, and 2006kv
(apparent or possible type II); 2006jl (IIn); and 2006lc (probable
type-Ic).
     In addition, three additional apparent supernovae have been
discovered on unfiltered CCD images:  2006ke and 2006kf by J. Schwehr,
D. Madison, and W. Li (LOSS/KAIT; cf. IAUC 8762); and 2006ld by the
"Nearby Supernova Factory" collaboration (details on CBET 689).


SN      2006 UT       R.A.  (2000.0)  Decl.   Mag.     Offset
2006ke  Oct. 19.51   5 52 37.38  +66 49 00.5  18.7  7".0 E, 2".6 N
2006kf  Oct. 21.46   3 41 50.48  + 8 09 25.0  17.4  5".5 W, 10".6 S
2006ld  Oct. 19.3    0 35 27.81  + 2 55 50.7  16.0     --


Additional magnitudes for 2006ke in UGC 3365:  Oct. 13.52 UT, [19.0;
20.49, 18.3.  SN 2006ke appears to be a subluminous type-Ia supernova
around maximum light (details on CBET 684).  Additional magnitudes for
2006kf in UGC 2829:  Sept. 26.53, [18.8; Oct. 23.45, 17.6.  SN 2006kf is
a type-Ia supernova before maximum B brightness (details on CBET 691).
SN 2006ld in UGC 348 is a type-Ib supernova some 1-2 weeks past maximum
(details on CBET 689); nothing was visible at the location of 2006ld on
a NEAT image taken on Sept. 20 (limiting mag approximately 20.0).



COMET C/2006 M4 (SWAN)
     This comet appears to have undergone an outburst, as indicated by
the following visual total-magnitude and coma-diameter estimates: Oct.
20.75 UT, 5.6, 6' (A. Diepvens, Balen, Belgium, 20x50 binoculars);
20.79, 5.9, 10' (J. J. Gonzalez, Asturias, Spain, 7x50 binoculars);
23.75, 5.9, 7' (R. J. Bouma, Groningen, The Netherlands, 15x80
binoculars); 24.04, 5.4, -- (B. King, Duluth, MN, naked eye); 24.77,
4.0, 7' (Diepvens); 24.77, 4.4, 8' (Bouma, 7x50 binoculars); 24.81, 4.5,
8' (Gonzalez; 1.8-deg tail in p.a. 25 deg; total mag 4.3 via naked eye).


                      (C) Copyright 2006 CBAT
2006 October 25                (8766)            Daniel W. E. Green