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IAUC 8566: C/1981 W1; C/2005 K2

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IAUC number 

                                                  Circular No. 8566
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 C/1981 W1 (SOLWIND)
     R. Kracht, Elmshorn, Germany, reports that he has found a
previously unrecognized Kreutz sungrazing comet on Solwind
spacecraft images taken on 1981 Nov. 20.  C/1981 W1, which showed a
small tail, was fainter than the previous Solwind comets (cf. IAUC
4129, 4229, 4230) -- perhaps of mag 2-3.  The observations below
were provided by Kracht.

     1981 UT           R.A. (2000) Decl.
     Nov. 20.059      15 37.9      -21 52
          20.062      15 37.9      -21 52
          20.066      15 38.0      -21 51
          20.069      15 38.0      -21 50
          20.073      15 38.1      -21 49
          20.076      15 38.2      -21 48
          20.079      15 38.2      -21 49
          20.083      15 38.3      -21 47
          20.086      15 38.3      -21 47
          20.090      15 38.4      -21 46
          20.265      15 41.3      -21 12
          20.272      15 41.4      -21 11
          20.275      15 41.5      -21 09
          20.279      15 41.6      -21 09

The following parabolic orbital elements are by B. G. Marsden:

     T = 1981 Nov. 20.61 TT           Peri. =  97.36
                                      Node  =  24.63    2000.0
     q = 0.0048 AU                    Incl. = 135.48


COMET C/2005 K2 (LINEAR)
     Additional offsets of the secondary component from the primary
(cf. IAUC 8548) from CCD images, reported via E. Jehin, European
Southern Observatory:  June 14.932 UT, 40".0 in p.a. 47.1 deg (O.
Nielsen, Rijswijk, The Netherlands, 0.20-m reflector); 14.940,
40".2 in p.a. 47.7 deg (E. Bryssinck, Antwerp, Belgium, 0.28-m
reflector).
     Visual total-magnitude estimates:  June 11.87 UT, 9.0 (G.
Santa, Szeged, Hungary, 0.11-m reflector); 13.93, 9.6 (A. Baransky,
Bucha, Ukraine, 0.20-m reflector); 17.91, 9.2 (J. J. Gonzalez,
Leon, Spain, 0.20-m reflector); 24.35, 9.9 (D. A. J. Seargent,
Cowra, N.S.W., 0.25-m reflector).

                      (C) Copyright 2005 CBAT
2005 July 12                   (8566)            Daniel W. E. Green

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