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IAUC 7316: 1999ga; 1999gb; C/1999 J3; HD 209458

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IAUC number

                                                  Circular No. 7316
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)

SUPERNOVA 1999ga IN NGC 2442
     S. Woodings, R. Martin, and A. Williams, Perth Observatory,
report their discovery of an apparent supernova (R about 18) on
Nov. 19.76 UT in the course of the Perth Astronomy Research Group's
automated supernova search with the Perth-Lowell 0.61-m reflector.
The last previous image of the field was taken on 1999 Apr. 30,
with no object visible at the position of SN 1999ga to mag about
19.  J. Biggs and A. Verveer provide the following position for SN
1999ga from two unfiltered CCD images obtained on Nov. 22.54 with
the 0.25-m Mike Candy Telescope at Perth Observatory:  R.A. =
7h36m16s.70 +/- 0s.03, Decl. = -69o33'21".8 +/- 0".4 (equinox
2000.0; GSC reference stars), which is about 38" west and 91"
south of the center of NGC 2442; the magnitude of the new star was
estimated as 18.5 +/- 1.

SUPERNOVA 1999gb IN NGC 2532
     A. Friedman 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 NGC
2532.  SN 1999gb was discovered and confirmed on unfiltered images
taken on Nov. 22.4 (mag about 16.1) and 23.4 UT (mag about 15.9).
SN 1999gb is located at R.A. = 8h10m13s.70, Decl. = +33o57'29".8
(equinox 2000.0), which is 18".6 west and 6".2 north of the nucleus
of NGC 2532.  At the request of Li, an image taken by T. Puckett
with the Puckett Observatory 0.60-m  automated supernova patrol
telescope on Nov. 23.4 also showed the new object.  A KAIT image of
the same field on Nov. 14.4 (limiting mag about 18.0) showed
nothing at the position of SN 1999gb.

     Visual m_1 estimates:  Oct. 31.09 UT, 8.3 (A. Amorim,
Florianopolis, Brazil, 0.14-m reflector); Nov. 3.80, 8.4 (A.
Pearce, Nedlands, W. Australia, 20x80 binoculars); 11.52, 9.6 (M.
Mattiazzo, Wallaroo, S. Australia, 0.20-m refl.); 20.40, 9.5 (S.
T. Rae, Te Awamutu, New Zealand, 0.25-m refl.).

HD 209458
     Corrigendum.  On IAUC 7315, line 26, for  G. A. Druckier,
read  G. A. Drukier,

                      (C) Copyright 1999 CBAT
1999 November 23               (7316)            Daniel W. E. Green

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