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IAUC 7558: 2001F; COMET C/1999 T1 (McNAUGHT-HARTLEY); SUNGRAZING COMETS

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                                                  Circular No. 7558
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)


SUPERNOVA 2001F IN IC 867
     M. Modjaz and W. D. Li, University of California at Berkeley,
on behalf of LOTOSS (cf. IAUC 7514), report the discovery of an
apparent supernova (mag about 16.5) on an unfiltered image taken
with the 0.8-m Katzman Automatic Imaging Telescope (KAIT) on Jan.
6.5 UT (confirmed on several images taken on Jan. 9.5 under poor
weather conditions).  The new object is located at R.A.  =
13h17m20s.05, Decl. = +20o38'09".8 (equinox 2000.0), which is 4".3
east and 7".7 south of the nucleus of IC 867.  A KAIT image of the
same field taken on 2000 June 20.2 showed nothing at this position
(limiting mag about 19.0).


COMET C/1999 T1 (McNAUGHT-HARTLEY)
     D. Schleicher, Lowell Observatory, reports that he obtained
eight sets of narrowband photometry of comet C/1999 T1 on 2000 Dec.
28 and 2001 Jan. 2 with the Hall 1.1-m telescope at Lowell
Observatory, yielding the following averaged results:  log Q(OH) =
28.67;  log Q(CN) = 26.10; log Af(rho) = 3.06 (cf. IAUC 7342).  The
equivalent log Q(water; vectorial) is 28.76.  No significant
temporal or aperture variations were observed.


SUNGRAZING COMETS
     Further to IAUC 7548, D. Hammer reports his measurements for
additional Kreutz sungrazing comets found by J. Danaher (C/1998
B2), X. Leprette (Nov. comets), and M. Oates (Dec. comets) on SOHO
website images taken with the C2 coronograph; C/1998 B2 was also
visible in C3 data.  The reduced observations and orbital elements
by B. G. Marsden are given on the MPECs cited below.

  Comet         1998 UT           R.A. (2000) Decl.       MPEC
  C/1998 B2     Jan. 25.588      20 48.0   -20 20       2001-A32
  C/1998 V2     Nov.  7.309      14 44.0   -17 35       2001-A31
  C/1998 V3           7.309      14 44.7   -17 37       2001-A31
  C/1998 V4           9.121      14 50.8   -18 07       2001-A35
  C/1998 W4          24.188      15 58.2   -22 11       2001-A31
  C/1998 W5          24.692      16 01.4   -22 22       2001-A31
  C/1998 W6          25.564      16 04.4   -22 30       2001-A35
  C/1998 X9     Dec. 14.246      17 30.8   -25 03       2001-A32
  C/1998 X10         14.271      17 30.3   -25 04       2001-A32

                      (C) Copyright 2001 CBAT
2001 January 9                 (7558)            Daniel W. E. Green

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