Central Bureau for Astronomical Telegrams

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IAUC 8469: 2005L; C/2004 X10, X11, Y2, Y3, Y4; C/2005 B1 = 2004 FS_101

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IAUC number 

                                                  Circular No. 8469
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 2005L IN MCG +07-33-5
     T. Boles, Coddenham, Suffolk, England, reports the discovery
of an apparent supernova (mag 18.2) on unfiltered CCD images taken
on Jan. 15.141 and 19.073 UT with a 0.35-m reflector.  The new
object is located at R.A. = 15h53m25s.92, Decl. = +39o23'08".1,
which is approximately 5".1 east and 2".7 south of the center of
MCG +07-33-5.  Nothing is present at this position on Boles'
images from 2004 June 5 and Sept. 5 (limiting mag 19.5) or on
Digitized Sky Survey plates from 1991 (limiting red mag 21.0) and
1988 (limiting blue mag 20.5).


COMETS C/2004 X10, X11, Y2, Y3, Y4 (SOHO)
     Further to IAUC 8466, following are the initial observations
of additional comets found on SOHO website images (GG = G. Gallina;
HO = H. Otterstedt); all are Kreutz sungrazers except for C/2004 Y4,
which has no known group membership and reached mag 5-6 on Dec. 26
(but showed no tail).

 Comet        2004 UT      R.A.(2000)Decl.   Inst.  F    MPEC
 C/2004 X10   Dec. 13.292  17 27.9  -25 05   C2     KB   2005-A41
 C/2004 X11        13.883  17 30.1  -25 03   C2     GG   2005-A41
 C/2004 Y2         18.975  17 53.7  -25 18   C2     HS   2005-A41
 C/2004 Y3         24.279  18 22.1  -28 37   C3     TS   2005-A41
 C/2004 Y4         24.679  18 14.6  -17 32   C3     HO   2005-A41


COMET C/2005 B1 = 2004 FS_101 (CHRISTENSEN)
     An object reported as asteroidal by LINEAR (2004 Mar. 23) and
by Spacewatch (2004 Mar. 18 and 26), and published as 2004 FS_101
(MPS 104028, 110712; initial orbit on MPEC 2004-O45 and MPO 66351)
has been identified with C/2005 B1.  The following revised orbital
elements are taken from MPEC 2005-B25:

                    Epoch = 2006 Mar.  6.0 TT
     T = 2006 Feb. 23.4751 TT         Peri. = 103.1841
     e = 1.000709                     Node  = 195.5570  2000.0
     q = 3.204423 AU                  Incl. =  92.5535

                      (C) Copyright 2005 CBAT
2005 January 19                (8469)            Daniel W. E. Green

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