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IAUC 8709: 2006cb, 2006cc, 2006cd, 2006ce; 73P

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                                                  Circular No. 8709
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 2006cb, 2006cc, 2006cd, 2006ce
     Four supernovae have been found in unfiltered images:  2006cb,
2006cc, and 2006cd by LOSS on KAIT images by N. J. Ponticello, H.
Khandrika, D. R. Madison, and W. Li (cf. IAUC 8707); 2006cd
independently by J. Newton, T. Crowley, and T. Puckett with a
0.40-m reflector at Portal, AZ, in the course of the Puckett
Observatory Supernova Search (the tabulated data below for 2006cd
is that from Puckett); and 2006ce by L. A. G. Monard, Pretoria,
South Africa (0.30-m reflector; cf. IAUC 8699).

SN      2006 UT     R.A.  (2000.0)  Decl.    Mag.     Offset
2006cb  May  5.43  14 16 31.80  +39 35 15.9  17.5  0".6 E, 5".7 S
2006cc  May  6.45  16 09 56.47  +43 07 35.9  18.3  11".1 E, 9".4 S
2006cd  May  8.27  16 05 22.06  +17 45 05.5  18.3  5".6 W, 11".4 S
2006ce  May 10.14   2 22 54.63  -21 14 29.4  12.4  136" W, 28" S

Additional magnitudes for 2006cb in NGC 5541:  Feb. 23.48 UT, [19.5;
Apr. 19.39, 18.6.  Additional magnitudes for 2006cc in UGC 10244:
Feb. 13.48, [19.5; Apr. 26.45, [18.5; May 7.43, 18.1.  SN 2006cc is
a type-Ia supernova, near maximum on May 8 (cf. CBET 506).
Additional magnitudes for 2006cd in IC 1179:  2005 Sept. 9, [19.7
(Puckett); 2006 Feb. 23.45, [19.5 (KAIT); May 8.44, 18.2 (KAIT);
May 9.23, 18.2 (A. Sehgal, 0.50-m reflector, Osoyoos, BC); 9.45,
18.1 (KAIT).  Li gives the offset for 2006cd as 3".0 west and 11".2
south of the center of IC 1179, the southwest component of Arp 272
(the northeast component being NGC 6050).  Additional magnitudes
for 2006ce in NGC 908:  Apr. 1.713, R > 16.5 (not detected); May
11.151, B = 12.9, V = 12.55, R = 12.4.  Also, nothing is visible at
the location of 2006ce on the Digitized Sky Survey (limiting red
mag 20.5) or on Monard's images taken prior to Apr. 1 (limiting mag
about 18).


COMET 73P/SCHWASSMANN-WACHMANN
     As comet 73P has neared the earth, increasingly large numbers
of fragments (some apparently very short-lived) have been observed.
The Minor Planet Center has continued to assign letter designations
to those components observed on three or more nights with precise
astrometry:  'AQ' and 'AR' announced on MPEC 2006-H37, 'AS' and 'AT'
on MPEC 2006-H48, 'AU'-'BM' on MPEC 2006-H61, and 'BN'-'BP' on MPEC
2006-J31.
     Visual total-magnitude estimates of component 'B' by J. J.
Gonzalez, Leon, Spain:  Apr. 28.91 UT, 7.6 (25x100 binoculars); May
1.02, 7.0 (7x50 binoculars); 5.12, 6.8 (0.6-deg tail in p.a. 235
deg); 11.14, 5.2 (naked eye).

                      (C) Copyright 2006 CBAT
2006 May 11                    (8709)            Daniel W. E. Green

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