Circular No. 8723

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) BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science) URL http://cfa-www.harvard.edu/iau/cbat.html Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVAE 2006db, 2006dc, 2006dd

Three additional supernovae have been discovered on unfiltered
CCD images:  2006db by R. Quimby and P. Mondol (cf. IAUC 8622),
2006dc by W. Li (LOSS/KAIT; cf. IAUC 8721), and 2006dd by L. A.
G. Monard (cf. IAUC 8709).

SN      2006 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2006db  June 16.18  11 55 38.69  +44 23 01.4  17.2  4".6 E, 0".5 N
2006dc  June 18.36  16 16 04.04  -22 37 16.7  17.8  6".3 E, 14".6 N
2006dd  June 19.17   3 22 41.62  -37 12 13.0  15.0  0".3 W, 16" N

Additional approximate magnitudes for 2006db:  2005 Mar. 4 and Apr.
8, [18.4 (co-addition of images); 2006 June 17.17 UT, 16.8.
Additional KAIT magnitudes for 2006dc in IC 4596:  May 20.44, [19.0;
30.42, 18.0; June 19.29, 17.7.  Additional approximate magnitudes
by Monard for 2006dd in NGC 1316:  June 2.153, [17.5 (unfiltered);
20.158, B = 14.66, V = 14.41, R = 14.60, I = 14.30.  Nothing is
visible at the location of 2006dd on the Digitized Sky Survey
(limiting red mag 20.5).

Host galaxy info: vel = 7670 km/s, 1.5 x 0.5 ; 15.5; (R')SB(r)ab

SN type info: IIn

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