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IAUC 7634: C/2001 K4; C/2001 K5

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IAUC number 

                                                  Circular No. 7634
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/2001 K4 (SOHO)
     Further to IAUCs 7613 and 7631, D. A. Biesecker has reported
measurements by D. Hammer of another comet found by Biesecker on
LASCO C2 images obtained with the SOHO spacecraft.  The reduced
observations and orbital elements by B. G. Marsden appear on MPEC
2001-K27.

     2001 UT           R.A. (2000) Decl.
     May  22.436       3 58.3      +18 47


COMET C/2001 K5 (LINEAR)
     An object reported as asteroidal by the LINEAR program on May
17 (with prediscovery LINEAR observations on Apr. 30 identified by
G. V. Williams) and posted on The NEO Confirmation Page has been
found to be slightly diffuse with coma diameter 8" on CCD images
taken at Klet on May 27.0 UT by M. Tichy and J. Ticha and to be
strongly condensed with a 12" coma and a 13" tail in p.a. 210 deg
on 300-s R-band exposures taken with the 1.8-m f/1 Vatican Advanced
Technology Telescope at Mt. Graham on May 27.3 by C. W.
Hergenrother, T. B. Spahr, and M. Nelson.

     2001 UT             R.A. (2000) Decl.        m1
     May  17.27721   15 28 10.02   -24 47 39.1   16.7

All available astrometry and the following parabolic orbital
elements appear on MPEC 2001-K40.

     T = 2002 Oct. 11.586 TT          Peri. =  46.950
                                      Node  = 237.461   2000.0
     q = 5.19269 AU                   Incl. =  72.691

2001 TT     R. A. (2000) Decl.   Delta     r    Elong. Phase    m1
May  21    15 26.10   -24 20.3   5.408   6.413  172.8    1.1   14.2
     26    15 23.36   -23 43.1   5.396   6.392  168.6    1.8   14.2
     31    15 20.70   -23 05.4   5.393   6.372  163.5    2.6   14.2
June  5    15 18.16   -22 27.5   5.397   6.351  158.3    3.4   14.2
     10    15 15.78   -21 49.8   5.409   6.330  152.9    4.2   14.2
     15    15 13.57   -21 12.4   5.429   6.310  147.6    4.9   14.2
     20    15 11.57   -20 35.7   5.455   6.290  142.3    5.7   14.2
     25    15 09.79   -19 59.8   5.488   6.270  137.0    6.4   14.2
     30    15 08.26   -19 25.1   5.527   6.249  131.7    7.0   14.2

                      (C) Copyright 2001 CBAT
2001 May 28                    (7634)            Daniel W. E. Green

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