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THE ASTRONOMER Electronic Circular No 1476      1999 Dec 04 16.54UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK             GMH at AST.STAR.RL.AC.UK
WORLD WIDE WEB                    http://www.demon.co.uk/astronomer
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SUPERNOVA 1999gg IN MCG +7-8-11
Guy M. Hurst, Basingstoke, England, reports the discovery by
Tom Boles, Wellingborough, of a supernova (mag about 16.8) on an
unfiltered CCD frame taken on Nov. 6.965 UT in the course of the
U.K. Nova/Supernova Patrol with a 0.36-m reflector; the new object
is lcoated at  R.A. = 3h27m58s.9, Decl. = +39o54'18".4 (2000.0).
M. Schwartz, Cottage Grove, OR, obtained a CCD image showing
SN 1999gg on Nov. 23, but the new object is not visible to
mag about 18 on an image taken by Schwartz on 1998 Nov. 1.

S. Jha, P. Garnavich, P. Challis, and R. Kirshner, Harvard-
Smithsonian Center for Astrophysics, report that spectra of SN
1999gg, obtained by E. Falco on Dec. 2.28 and 3.25 UT with the F.
L. Whipple Observatory (FLWO) 1.5-m telescope (+ FAST
spectrograph), show it to be a type-II supernova.  The spectrum is
heavily contaminated by the host galaxy, but a broad P-Cyg H-alpha
profile is visible, as well as broad H-beta absorption.  The
photospheric expansion velocity of the supernova, measured from the
H-alpha absorption minimum, is 5100 km/s.  Cross-correlation of the
host galaxy spectrum with an emission-line template yields a
recession velocity of 4350 +/- 20 km/s.  An image of SN 1999gg,
taken by A.Bragg on Nov. 30.29 with the FLWO 1.2-m telescope
(+ 4Shooter), yields precise position end figures for the
supernova:  58s.84, 19".0 (equinox 2000.0, uncertainty +/- 0".2),
which is 4".7 west and 3".3 north of the galaxy nucleus.
IAUC 7326

Our sincere congratulations to Tom on this further success!:Editor

Guy M Hurst