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IAUC 8713: 2006ci, 2006cj, 2006ck; C/2006 D3-D6, C/2006 E3, C/2006 E4

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IAUC number


                                                  Circular No. 8713
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 2006ci, 2006cj, 2006ck
     Three apparent supernovae have been found on unfiltered CCD
frames:  2006ci by C. Colesanti, C. Jacques, E. Pimentel, and T.
Napoleao (cf. IAUC 8658); 2006cj by R. Quimby, P. Mondol, and F.
Castro (cf. IAUC 8622); and 2006ck by P. Luckas, O. Trondal, and M.
Schwartz (cf. IAUC 8687).

SN      2006 UT     R.A.  (2000.0)  Decl.    Mag.     Offset
2006ci  May 18.20  18 18 28.67  -54 41 45.6  15.1  24".7 W, 6".5 S
2006cj  May 17.23  12 59 24.42  +28 20 51.7  18.1  4" E, 2" N
2006ck  May 20.54  13 09 40.42  - 1 02 57.2  17.4  10".2 W, 3".0 S

Additional magnitudes for 2006ci in ESO 182-G10:  Apr. 5.39 UT,
[19.0; May 19.05, 15.2.  Nothing is visible at the location of
2006ci on a red Palomar Survey image from 1995.  Additional
approximate magnitudes for 2006cj:  2004 Dec. 15 and 2006 Jan. 10,
[19.3; May 18.24, 18.0; 19.28, 17.7 (poor conditions).
Spectroscopy by S. Blondin et al. (cf. CBET 517) on May 22.32 shows
that 2006cj is a type-Ia supernova just past maximum.  Additional
magnitudes for 2006ck in UGC 8238:  1989 Feb. 11, [21.0 (Digitized
Sky Survey, red); Mar. 29.70, [18.0 (Luckas); May 22.17, 17.4.
Blondin et al. report (cf. CBET 519) that a spectrogram taken on
May 23.21 shows 2006ck to be a type-Ic supernova near maximum.


COMETS C/2006 D3-D6, C/2006 E3, C/2006 E4 (SOHO)
     Additional Kreutz sungrazing comets have been found on SOHO
website images (cf. IAUC 8712).  C/2006 D3 and C/2006 D4 were
described by K. Battams as tiny, stellar, and extremely faint.
C/2006 D5 had a teardrop shape, reaching mag 5.2 on Feb. 26.738 UT
at 11.8 solar radii.  C/2006 D6 and C/2006 E3 appeared stellar,
both reaching mag 4.6, on Mar. 1.358 at 11.7 solar radii and Mar.
13.399 at 11.4 solar radii, respectively.  C/2006 E4 was extremely
faint (mag about 8.5) and diffuse.

 Comet        2006 UT       R.A.(2000)Decl.   Inst.  F    MPEC
 C/2006 D3    Feb. 19.738  22 27.8   -12 07   C3     SF   2006-J51
 C/2006 D4         21.138  22 32.9   -11 31   C3     HS   2006-J51
 C/2006 D5         26.279  22 58.3   - 9 59   C3     SH   2006-K09
 C/2006 D6         28.691  23 11.0   - 9 16   C3     SF   2006-K09
 C/2006 E3    Mar. 12.899  23 53.4   - 4 15   C3     HS   2006-K09
 C/2006 E4         15.133  23 47.2   - 2 27   C2     TH   2006-K09

                      (C) Copyright 2006 CBAT
2006 May 23                    (8713)            Daniel W. E. Green

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