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IAUC 7975: ANOTHER N IN Sgr; C/2002 S2

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IAUC number 

                                                  Circular No. 7975
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)


ANOTHER NOVA IN SAGITTARIUS
     Katsumi Haseda, Aichi, Japan, reports his discovery of a
possible nova (mag about 5.0) on Tri-X film taken with a 120-mm
f/3.5 camera lens on Sept. 20.431 UT; Haseda provided an approximate
position for the new star of R.A. = 19h01m08s.5, Decl. =
-22o00'45" (equinox 2000.0).  D. West, Mulvane, KS, reports the
following precise position end figures measured from a CCD exposure
taken on Sept. 21.07:  09s.38, 05".9 (uncertainty +/- 0".75; twenty
GSC 1.1 reference stars).  West adds that nothing is visible at
this location on a Digitized Sky Survey image from 1987.59.  H.
Yamaoka, Kyushu University, and G. Masi, Ceccano, Italy, report
that a USNO-A2.0 star is located at position end figures 09s.321,
06".17 with red mag 16.7 and blue mag 17.0.  Yamaoka adds that the
second-nearest object in the same catalogue is about 7" from West's
position.
     T. Kato, Kyoto University, forwards a report from M. Fujii
(Fujii Bisei Observatory, Okayama, Japan; (via K. Ayani, Bisei
Astronomical Observatory) that a spectrum of this new object, taken
on Sept. 21.44, shows strong Balmer and Fe II emission lines and
confirms that the object is an Fe II-class nova shortly after
maximum; the FWHM of H-alpha emission is 2400 km/s.
     Magnitude estimates, visual unless otherwise noted:  Sept.
19.424, 5.5: (T. Tanaka, Mie, Japan, FinePix S2Pro unfiltered CCD
camera; magnitude estimated by Kato); 19.427, 4.9 (H. Nishimura,
Kakegawa, Shizuoka, Japan, T-Max 400 film; communicated by Kato);
21.07, B = 6.44 (West; CCD); 21.145, 6.1 (J. Garcia, Rama Caida,
Argentina); 21.229, 5.8 (M. Linnolt, Honolulu, HI); 21.267, 5.8 (J.
Bedient, Honolulu, HI); 21.409, 5.8 (Linnolt); 21.33, 5.5 (S. J.
O'Meara, Volcano, HI).


COMET C/2002 S2 (SOHO)
     Further to IAUC 7969, M. Uzzo reports his measurements for a
Kreutz sungrazer found by S. Hoenig on SOHO website C3 coronagraph
images.  The reduced astrometry and orbital elements by B. G.
Marsden appear on MPEC 2002-S17.

     2002 UT           R.A. (2000) Decl.
     Sept.17.571      11 06.7      + 0 39

                      (C) Copyright 2002 CBAT
2002 September 21              (7975)            Daniel W. E. Green

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