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IAUC 7334: 1999gm; 1999gi; 141P

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                                                  Circular No. 7334
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)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVA 1999gm IN PGC 24106
     M. Papenkova and W. D. Li, University of California at
Berkeley, on behalf of the Lick Observatory Supernova Search (cf.
IAUC 6627, 7126), report the discovery with the 0.8-m Katzman
Automatic Imaging Telescope (KAIT) of an apparent supernova in PGC
24106.  SN 1999gm was discovered and confirmed on unfiltered images
taken on Dec. 15.4 and 16.4 UT, both showing mag about 17.3.  The
new object is located at R.A. = 8h35m11s.73, Decl. = -8 23'15".4
(equinox 2000.0), which is 12".1 east and 1".5 south of the nucleus
of PGC 24106.  A KAIT image of the same field taken on Dec. 5.4
already showed a hint of the supernova.  A KAIT image taken on Nov.
24.4 (limiting mag about 19.0) showed nothing at the position of SN
1999gm.
     D. C. Leonard, R. Chornock, A. L. Coil, and A. V. Filippenko,
University of California at Berkeley, report that preliminary
reduction of CCD spectra (range 330--1000 nm), obtained on Dec. 17
UT with the Shane 3-m reflector at Lick Observatory, shows that SN
1999gm is a type-Ia supernova near maximum light.


SUPERNOVA 1999gi IN NGC 3184
     Unfiltered CCD magnitudes:  Dec. 3.18 UT, [18.5 (O. Trondal,
Oslo, Norway; communicated by B. H. Granslo); 10.73, 14.3 (R.
Kushida, Yatsugatake South Base Observatory; communicated by S.
Nakano); 11.794, 14.6 (S. Yoshida and K. Kadota, Ageo, Saitama,
Japan).


COMET 141P/MACHHOLZ 2
     Total m_1 estimates of components A and D, respectively
(visual unless otherwise noted):  Nov. 12.70 UT, 13.3, 12.0 (M.
Jaeger, near Vienna, Austria, 0.25-m Schmidt camera + Kodalith
orthochromatic film); 26.68, 11.8, 12.3 (Jaeger); 27.22, 11.6, 12.3
(N. Biver, Oahu, HI, 0.26-m reflector); 27.73, 12.8, 12.9 (W.
Hasubick, Buchloe, Germany, 0.44-m reflector); 28.22, 12.1, 12.6
(Biver); 29.71, 11.8, 12.0: (M. Meyer, Frauenstein, Germany, 0.25-m
reflector); 30.40, 13.1, 14.4: (A. Nakamura, Kuma, Ehime, Japan,
0.60-m reflector + CCD); Dec. 2.45, 11.4, 12: (D. A. J. Seargent,
Cowra, N.S.W., 0.25-m reflector); 3.40, 12.5, 13.6: (Nakamura);
4.70, 10.6, 11.8: (Meyer); 5.48, 12.0:, [12.0 (M. Mattiazzo,
Wallaroo, S. Australia, 0.20-m reflector); 6.79, 11.8, 13.0 (J.
Carvajal, Avila, Spain, 0.45-m reflector); 8.40, 11.9, 14.0:
(Nakamura).

                      (C) Copyright 1999 CBAT
1999 December 17               (7334)            Daniel W. E. Green

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