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IAUC 7731: 2001et; 2001eu; 2001ep; Poss. N IN Cen

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                                                  Circular No. 7731
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 617-495-7440/7244/7444 (for emergency use only)

SUPERNOVA 2001et IN MCG -03-51-9
     W. D. Li, University of California at Berkeley, reports the
discovery by LOTOSS (cf. IAUC 7514) of an apparent supernova in
unfiltered images taken with the Katzman Automatic Imaging
Telescope.  SN 2001et is located at R.A. = 20h19m35s.00, Decl. =
-18o09'49".3 (equinox 2000.0), which is 21".7 east and 24".3 south
of the nucleus of MCG -03-51-9.  Magnitudes for the new object:
Sept. 13.3 UT, [19.0; 23.2, 18.5; Oct. 1.2, 17.8; 9.2, 17.8; 10.2,

     G. Miknaitis, Astronomy Department, University of Washington,
reports the detection of an apparent supernova (g' about 19.4, r'
about 20.4) by the Sloan Digital Sky Survey (SDSS) in images taken
with the SDSS 2.5-m telescope on Sept. 21.9 UT.  SN 2001eu, which
was also found in images taken on Sept. 19.9 and 21.9, is located
at R.A. = 2h37m58s.80, Decl. = -1 01'40".1 (equinox 2000.0), which
is 1" west and 1" south of the nucleus of a galaxy having position
end figures 58s.89, 39".1.  This galaxy is identified in the SDSS
Early Data Release at redshift z = 0.135.  SN 2001eu is not present
in images taken by the SDSS on 1998 Sept. 19.9.  Follow-up
observations taken at the APO 3.5-m telescope on Oct. 7.7 by A.
Miceli, C. Stubbs, R. Covarrubias, and B. Lawton confirm the
existence of the supernova.

SUPERNOVA 2001ep IN NGC 1699
     T. Matheson, S. Jha, P. Challis, and R. Kirshner, Harvard-
Smithsonian Center for Astrophysics, report that a spectrum (range
370-750 nm) of SN 2001ep (cf. IAUC 7727), obtained by J. Huchra on
Oct. 10.48 UT with the F. L. Whipple Observatory 1.5-m telescope (+
FAST spectrograph), shows it to be a type-Ia supernova near maximum
light.  Adopting the NASA/IPAC Extragalactic Database recession
velocity of 3901 km/s for the host galaxy, the supernova expansion
velocity is about 11 300 km/s for Si II (rest 635.5 nm).  The
spectral-feature age of the supernova (Riess et al. 1997, A.J. 114,
722) is 1 +/- 2 days before maximum light.

     Additional visual magnitude estimates (cf. IAUC 7727):  Oct.
5.927 UT, 9.7 (R. Y. Shida, Sao Paulo, Brazil); 8.541, 10.1 (A.
Pearce, Nedlands, W. Australia); 9.509, 10.9 (Pearce); 10.523, 11.2

                      (C) Copyright 2001 CBAT
2001 October 10                (7731)            Daniel W. E. Green

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