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IAUC 7524: P/2000 SO_253; 2000em, 2000en, 2000eo, 2000ep, 2000eq

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                                                  Circular No. 7524
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)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7440/7244/7444 (for emergency use only)


COMET P/2000 SO_253 (LINEAR)
     An apparently asteroidal object discovered by LINEAR (MPS
20197, 21370; discovery observation below) has been found to be
cometary (highly condensed 5" coma and a 15" tail in p.a. 45 deg)
on 300-s R-band CCD exposures taken on Nov. 24.3 UT by C. W.
Hergenrother and A. E. Gleason with the Steward Observatory 1.54-m
reflector.  Additional observations and orbital elements (T = 2001
May 2.1 TT, q = 1.694 AU, i = 3.7 deg, P = 7.04 yr) are given on
MPEC 2000-W39.

     2000 UT             R.A. (2000) Decl.        m2
     Sept.24.34851    0 51 19.53   - 0 55 59.0   19.8


SUPERNOVAE 2000em, 2000en, 2000eo, 2000ep, 2000eq
     L.-G. Strolger, University of Michigan and Cerro Tololo
Interamerican Observatory (CTIO), reports the discovery by the
Nearby Galaxies Supernova Search team (cf. IAUC 7297, 7416; plus
J. C. Seguel, J. Krick, and A. Block) of several supernovae with
the Kitt Peak 0.9-m telescope (+ Mosaic camera; limiting mag R
about 21).  Search frames were compared to template frames obtained
a year or more previously.

SN      2000 UT      R.A.  (2000.0)  Decl.     R       Offset
2000em  Nov. 16    0 35 29.82   - 2 39 27.4   18.3   4".5 W, 2".5 N
2000en  Nov. 16    0 43 08.37   - 0 23 17.6   20.2   1".8 W, 2".5 N
2000eo  Nov. 16    3 09 08.17   -10 17 55.3   19.2  12".0 W, 20".9 S
2000ep  Nov. 16    9 19 49.86   - 4 43 28.2   18.7   2".8 E, 4".5 S
2000eq  Nov. 17   21 03 57.97   - 9 41 31.8   20.5   7".3 W, 7".3 N

Direct confirmation of each object was made by P. Candia using the
CTIO 0.9-m telescope on Nov. 18 and 19.  Spectra (range 400-900 nm)
were obtained by R. C. Smith and Strolger using the Mayall 4-m
telescope on Nov. 20-22.  From the spectra, N. B. Suntzeff and M.
M. Phillips identify SN 2000em as most likely a peculiar type-II
event at z = 0.019, resembling SN 1997D.  The spectra of SN 2000en
indicate that it is a type-Ia event, a few days past maximum light.
SN 2000eo in MCG -2-9-3 is a type-IIn supernova with Wolf-Rayet-
like He II and N III/C III emission, similar to SN 1998S, at z =
0.010.  SN 2000ep has spectra consistent with a normal type-II
supernova within a few weeks of maximum, at z = 0.024.  SN 2000eq
appears to be a type-Ia supernova, 2-3 weeks past maximum light.

                      (C) Copyright 2000 CBAT
2000 November 25               (7524)            Daniel W. E. Green

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