Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 8652: 71P; C/2005 Y2; SNe

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 8651 SEARCH Read IAUC 8653

View IAUC 8652 in .dvi, .ps or .PDF format.
IAUC number 

                                                  Circular No. 8652
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)


COMET 71P/CLARK
     This comet has been recovered at total mag about 17.5-18 via
observations at several observatories during Dec. 22-30, with the
astrometry, the following orbital elements by B. G. Marsden (from
78 observations, 2000-2005; mean residual 0".7; nongravitational
parameters A_1 = +1.05 +/- 0.19, A_2 = -0.7600 +/- 0.1056), and an
ephemeris appearing on MPEC 2005-Y59.  The correction to the
prediction by S. Nakano (MPC 48382; 2006 Comet Handbook) is
Delta(T) = -0.42 day.

                    Epoch = 2006 May  25.0 TT
     T = 2006 June  6.79246 TT        Peri. = 208.74552
     e = 0.4997464                    Node  =  59.65809 2000.0
     q = 1.5620858 AU                 Incl. =   9.48790
       a =  3.1225878 AU   n = 0.17862083   P =   5.52 years


COMET C/2005 Y2 (McNAUGHT)
     R. H. McNaught reports his discovery of a diffuse comet on CCD
survey exposures obtained with the 0.5-m Uppsala Schmidt telescope
at Siding Spring (discovery observation tabulated below).  Better
exposures taken on Dec. 31.44-31.46 UT confirm a coma diameter of
about 10".

     2005 UT             R.A. (2000) Decl.       Mag.
     Dec. 30.45574   23 07 04.58   -24 09 24.7   17.8

The available astrometry, the following preliminary parabolic
orbital elements, and an ephemeris appear on MPEC 2006-A01.

     T = 2006 July 25.690 TT          Peri. = 295.386
                                      Node  =  93.331   2000.0
     q = 3.72356 AU                   Incl. =  19.076


SUPERNOVAE
     Several recently discovered supernovae have been found to be
of type II:  2005kk (details on CBET 312), 2005kx (CBET 311),
2005lx (CBET 342), 2005mb (CBET 345), 2005me (CBET 345), 2005mg
(CBET 342).  Type-Ia supernovae:  2005iq (CBET 278), 2005kc (CBET
286), 2005ls (CBET 324), 2005lt (CBET 319, 321), 2005lu (CBET 321),
2005ms (CBET 345).  Type-Ic supernovae:  2005kf (CBET 301), 2005lr
(CBET 321).

                      (C) Copyright 2005 CBAT
2005 December 31               (8652)            Daniel W. E. Green

Read IAUC 8651 SEARCH Read IAUC 8653

View IAUC 8652 in .dvi, .ps or .PDF format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!