Central Bureau for Astronomical Telegrams

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IAUC 7667: 2001df; C/2001 M11, C/2001 N1, C/2001 O1; 2001cm

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                                                  Circular No. 7667
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 2001df IN MCG -04-51-5
     P. Martin, M. Modjaz, and W. D. Li, University of California
at Berkeley, report the discovery by LOTOSS (cf. IAUC 7514) of an
apparent supernova (mag about 18.0) in unfiltered images taken with
the Katzman Automatic Imaging Telescope (KAIT) on June 25.4, July
11.4, and July 18.4 UT.  An image taken on June 16.5 under poor
conditions also showed a hint of the new object.  SN 2001df is
located at R.A. = 21h39m18s.15, Decl. = -25o29'36".0 (equinox
2000.0), which is 5".0 east and 3".4 north of the nucleus of MCG
-04-51-5.  A KAIT image taken on 2000 Nov. 27.2 showed nothing at
this position (limiting mag about 19.0).
     T. Matheson, S. Jha, P. Challis, and R. Kirshner, Harvard-
Smithsonian Center for Astrophysics, report that a spectrum of SN
2001df, obtained by P. Berlind on July 19.38 UT with the F. L.
Whipple Observatory 1.5-m telescope (+ FAST spectrograph), shows it
to be a type-II supernova past maximum light.  The spectrum
exhibits a flat continuum with P-Cyg lines of hydrogen.


COMETS C/2001 M11, C/2001 N1, C/2001 O1 (SOHO)
     Further to IAUC 7655, D. Hammer reports measurements of three
additional comets found by M. Oates, X. Leprette, and S. Hoenig on
SOHO website images.  All three objects were visible with the C2
coronagraph, and C/2001 O1 was also visible in C3 images.  The
reduced astrometry and orbital elements by B. G. Marsden appear on
the MPECs cited below; C/2001 N1 does not seem to be a Kreutz
sungrazer, whereas the other two comets do.

  Comet         2001 UT          R.A. (2000) Decl.       MPEC
  C/2001 M11    June 27.254       6 18.6   +22 03       2001-N24
  C/2001 N1     July  5.896       6 55.7   +21 07       2001-N24
  C/2001 O1          16.221       7 29.8   +19 15       2001-O03


SUPERNOVA 2001cm IN NGC 5965
     CCD R magnitudes obtained by K. Hornoch, Lelekovice, Czech
Republic: June 12.997 UT, 16.2; 15.949, 16.3; 20.998, 16.3; 24.962,
16.4; 25.997, 16.4; 27.925, 16.4; July 12.931, 16.8; 14.901, 16.7.
Unfiltered CCD (red) magnitudes by E. Prosperi, Larciano, Italy:
June 21.885, 16.7; 24.845, 16.5.

                      (C) Copyright 2001 CBAT
2001 July 19                   (7667)            Daniel W. E. Green

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