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IAUC 8549: 2005cn; C/2005 J3-J10

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IAUC number

                                                  Circular No. 8549
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)

SUPERNOVA 2005cn IN NGC 5061
     Further to IAUC 8530, C. Jacques reports the discovery by the
Brazilian Supernovae Search Team (including also C. Colesanti, E.
Pimentel, and T. Napoleao) of an apparent supernova (mag 14.6) on
unfiltered CCD images taken on June 19.99 and 21.00 UT.  The new
object is located at R.A. = 13h18m00s.46, Decl. = -26o48'33".1
(equinox 2000.0), which is 62" west and 103" north of the center of
NGC 5061.  Nothing was visible at this location on a CCD image
taken on Apr. 15.12 (limiting mag 19.0) or on a red Digitized Sky
Survey image from 1992.

COMETS C/2005 J3-J10 (SOHO)
     Following are the initial available positions for additional
Kreutz sungrazing comets found on SOHO website images (continuation
to IAUC 8548).  K. Battams writes that C/2005 J3, J8, and J10 were
faint and diffuse -- barely above the background, adding that the
peak magnitude for each such object is approximately 9 +/- 0.5;
C/2005 J4 was stellar in appearance and also barely above the
background.  C/2005 J5 had a 'teardrop' shape, peaking in
brightness at mag about 6.8 at 6.2 solar radii (May 9.004 UT).
C/2005 J6 was fairly diffuse and reached mag about 6.8 at 6.2 solar
radii in the C2 coronagraph (May 10.621), but (like C/2005 J5) this
object was too close to the pylon for photometry in C3 images; it
also displayed a 80" tail in the C2 image from May 10.629.  C/2005
J7 appeared stellar in both C3 and C2 images, reaching mag about
6.1 at 9.0 solar radii (May 11.488, C3).  C/2005 J9 was also
extremely faint and appeared as a headless tail (230" long on May
14.078) at the edge of the field-of-view; as it neared the sun, "it
became more of a small, diffuse blob".

 Comet       2005 UT       R.A.(2000)Decl.  Inst.  F    MPEC
 C/2005 J3   May  2.893    2 46.1   +14 24   C2    CL   2005-M14
 C/2005 J4        5.746    2 56.3   +15 08   C2    MM   2005-M14
 C/2005 J5        8.863    3 10.6   +15 46   C3/2  TH   2005-M15
 C/2005 J6       10.346    3 17.1   +15 47   C3/2  BZ   2005-M15
 C/2005 J7       10.696    3 25.9   +14 36   C3/2  BZ   2005-M15
 C/2005 J8       12.724    3 22.4   +16 53   C2    HS   2005-M15
 C/2005 J9       14.078    3 28.0   +17 18   C2    JS   2005-M15
 C/2005 J10      14.536    3 29.9   +17 19   C2    BZ   2005-M15

                      (C) Copyright 2005 CBAT
2005 June 21                   (8549)            Daniel W. E. Green

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