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IAUC 7780: 2001io, 2001ip; 2001iq; C/2001 W2

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                                                  Circular No. 7780
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)

SUPERNOVAE 2001io AND 2001ip
     G. Altavilla, S. Benetti, A. Pastorello, M. Riello, M. Turatto,
and L. Zampieri, Osservatorio Astronomico di Padova; E. Cappellaro,
Osservatorio Astronomico di Capodimonte, A. Clocchiatti and C.
Contreras, Universidad Catolica de Chile; I. J. Danziger and P.
Mazzali, Osservatorio Astronomico di Trieste; and F. Patat,
European Southern Observatory (ESO), report the discovery of two
faint supernovae on CCD frames taken during a search performed with
the ESO/MPI 2.2-m telescope (+ Wide Field Imager).  The supernovae
were identified by comparing the images with reference images taken
(using the same equipment) on Nov. 11.  Each object is within 1" of
the nucleus of its host galaxy.  Spectra obtained on Dec. 20 with
the ESO 8.2-m MELIPAL Very Large Telescope (+ FORS1) reveal that
both of these supernovae are of type Ia; from the spectral features,
it is estimated that SN 2001io was 1-2 weeks after maximum and SN
2000ip was a few days before maximum.

SN        2001 UT      R.A. (2000.0) Decl.        V      z
2001io    Dec.  8     0 45 53.64   -29 26 11.7   23     0.19
2001ip    Dec.  8     3 31 13.03   -27 50 55.5   23.8   0.54

     G. M. Hurst, Basingstoke, England, reports the discovery by M.
Armstrong, Rolvenden, England, of an apparent supernova (mag 17.2)
on a 60-s unfiltered CCD image taken on Dec. 14.805 UT in the
course of the U.K. Nova/Supernova Patrol with a 0.35-m Schmidt-
Cassegrain reflector.  The new object was at mag 16.6 on images
obtained on Dec. 20.76, and it is located at R.A. = 22h25m10s.42,
Decl. = +42o43'04".2, (equinox 2000.0; average from two images),
which is approximately 3" southwest of a galaxy that itself is
about 87" west and 30" north of UGC 12032.  Additional estimated
magnitudes for SN 2001iq:  1989 Sept. 3, [20.8 (Palomar Observatory
Sky Survey, red); Sept. 9, [22.5 (POSS, blue); 2001 July 22, [19.0
(Armstrong); Dec. 20.76, 16.6 (Armstrong).

     Visual m_1 estimates:  Dec. 4.42 UT, 11.5 (K. Yoshimoto,
Yamaguchi, Japan, 0.25-m refl.); 9.72, 11.4 (W. Hasubick, Buchloe,
Germany, 0.44-m refl.); 16.71, 11.8 (R. J. Bouma, Groningen, The
Netherlands, 0.31-m refl.).

                      (C) Copyright 2001 CBAT
2001 December 21               (7780)            Daniel W. E. Green

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