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IAUC 7546: C/2000 WM_1; 2000fn; C/2000 W1

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IAUC number 

                                                  Circular No. 7546
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/2000 WM_1 (LINEAR)
     An apparently asteroidal object with unusual motion reported
by the LINEAR team on Dec. 16 was posted on the NEO Confirmation
Page.  Subsequent astrometry permitted a linkage to another set of
observations by LINEAR on Nov. 16 and 18, designated 2000 WM_1 on
MPS 22800.  The first LINEAR observations on Nov. 16 and Dec. 16
are given below.  An observation of 2000 WM_1 by T. B. Spahr
(Smithsonian Astrophysical Observatory 1.2-m reflector at Mt.
Hopkins) on Dec. 20.148 UT shows the object to have a 10" coma and
a broad, faint tail some 10"-20" long in p.a. 45 deg.  The full set
of observations, together with the parabolic orbital elements given
below and an ephemeris that indicates the comet may reach naked-eye
brightness late next year, appears on MPEC 2000-Y20.

     2000 UT             R.A. (2000) Decl.        m2
     Nov. 16.14461    0 08 34.62   +59 47 36.0   18.0
     Dec. 16.06960   23 58 17.08   +54 29 11.3   17.8

     T = 2002 Jan. 22.7781 TT         Peri. = 276.8165
                                      Node  = 237.8924  2000.0
     q = 0.554808 AU                  Incl. =  72.5589


SUPERNOVA 2000fn IN NGC 2526
     T. Puckett, Mountain Town, GA, provides his astrometry and
photometry of an apparent supernova (mag about 18.8) discovered by
B. Holmes, Charleston, IL, on an unfiltered CCD frame taken with a
0.40-m reflector on Dec. 17.20 UT:  R.A. = 8h06m57s.79, Decl. =
+8 00'19".3 (equinox 2000.0), which is 12".7 west and 4".9 north of
the center of NGC 2526.  The new object was also present (mag 18.0)
on an unfiltered CCD frame (limiting mag 19.0) taken by Holmes on
Nov. 27.20, and (via W. Li, University of California) on images
taken with the Katzman Automatic Imaging Telescope on Nov. 19 and
Dec. 3.  SN 2000fn does not appear on Palomar Sky Survey images
(limiting mag about 21.0) taken on 1997 Nov. 7 and 1988 Dec. 11.


COMET C/2000 W1 (UTSUNOMIYA-JONES)
     Visual m_1 estimates (B = binoculars):  Dec. 5.93 UT, 7.0
(J. G. S. Aguiar, Campinas, Brazil, 11x80 B); 6.97, 6.5 (A.
Amorim, Florianopolis, Brazil, 7x50 B; moonlight); 13.52, 6.7 (A.
Pearce, Nedlands, W. Australia, 20x80 B); 16.37, 5.5 (S. Yoshida,
Ibaraki, Japan, 0.25-m reflector).

                      (C) Copyright 2000 CBAT
2000 December 20               (7546)            Daniel W. E. Green

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