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IAUC 7972: 2002 S1; 2002fi; V4742 Sgr = Poss. N IN Sgr

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                                                  Circular No. 7972
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 2002 S1
     B. Skiff, Lowell Observatory, reports his discovery of a comet
on images taken by him in the course of the LONEOS program, with
the available observations given below.  The object has a
moderately condensed coma of diameter 10" and a tail 30" long in
p.a. 285 deg.  At Skiff's request, M. Hayes-Gehrke obtained a
confirming 5-min CCD R frame (also on Sept. 17) with the Lowell
Observatory's Perkins 1.8-m telescope, showing a 8" coma and a tail
about 30" long in p.a. 280 or 285 deg.

     2002 UT             R.A. (2000) Decl.        m1
     Sept.17.41755    7 02 13.22   +49 41 30.4   18.0
          17.43083    7 02 14.77   +49 41 35.0
          17.44419    7 02 16.21   +49 41 38.3
          17.45753    7 02 17.87   +49 41 43.0


SUPERNOVA 2002fi IN MCG -04-7-10
     D. Weisz and W. D. Li, University of California at Berkeley,
report the LOTOSS (cf. IAUC 7906) discovery of an apparent
supernova on unfiltered KAIT CCD images taken on Sept. 13.4 (mag
about 18.5) and 17.4 UT (mag about 18.3).  SN 2002fi is located at
R.A. = 2h33m54s.40, Decl. = -21o02'29".4 (equinox 2000.0), which is
19".4 west and 6".7 north of the nucleus of MCG -04-7-10.  A KAIT
image taken on Aug. 28.4 showed nothing at this position (limiting
mag about 19.0).


V4742 SAGITTARII = POSSIBLE NOVA IN SAGITTARIUS
     N. N. Samus, Institute of Astronomy, Moscow, informs us that
the designation V4742 Sgr has been given to this object (cf. IAUC
7971).
     H. Yamaoka, Kyushu University, reports the following position
for this object from a CCD frame taken by B. Monard on Sept. 16.7
UT:  R.A. = 18h02m21s.864, Decl. = -25o20'32".22 (equinox 2000.0;
102 UCAC1 reference stars); no source is visible on Digitized Sky
Survey images within 3" of this position.  C. Buil, Ramonville St.
Agne, France, reports that a spectrum obtained on Sept. 16.806
yields an expansion velocity of 1100 +/- 150 km/s from the FWHM of
the H-alpha line, which shows a P-Cyg profile.  T. Kato, Kyoto
University, remarks that Buil's spectrum appears to be that of a
nova just prior to maximum.  Visual magnitude estimates:  Sept.
16.854, 8.0 (P. Schmeer, Bischmisheim, Germany); 17.040, 8.1 (R. Y.
Shida, Sao Paulo, Brazil); 17.496, 8.7 (A. Pearce, Nedlands, W.
Australia).

                      (C) Copyright 2002 CBAT
2002 September 17              (7972)            Daniel W. E. Green

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