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IAUC 7808: Poss. N IN Oph; 2002J; 2002an

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                                                  Circular No. 7808
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)

     Independent discoveries of a possible nova in Ophiuchus have
been reported by Katsumi Haseda (Aichi, Japan, 0.10-m f/4 twin
patrol camera + T-Max 400 film) and by Yuji Nakamura (Suzuka, Mie,
Japan, 200-mm f/4 lens + Tri-X film; communicated by M. Soma,
National Astronomical Observatory, Tokyo).  Haseda provides the
following precise position from his discovery film (Jan. 24.838 UT,
when the new object was at mag 9.0), measured by K. Kadota, Ageo,
Saitama, Japan:  R.A. = 17h37m34s.41, Decl. = -16o23'17".9 (equinox
2000.0).  Nakamura provides the following position end figures for
the new object (from his discovery film), which was at mag 9.3 on
Jan. 24.867:  34s.8, 27" (uncertainty +/- 20" in each coordinate).
D. West, Mulvane, KS, reports the following position end figures
for the new object, which was at V = 9.19 on a CCD image taken on
Jan. 26.527:  34s.60, 23".2 (uncertainty +/- 0".6).  Haseda notes
that no object appears at the position of the new star to limiting
mag 12.5-13.1 on his patrol films taken during 1997 Aug. 23-2001
Oct. 11.  The closest star visible on the Digitized Sky Survey
(DSS) appears to be a USNO-A2.0 star at position end figures
34s.483, 26".09 (blue mag 16.6, red mag 15.0).  West adds that the
new star was at R_c = 8.67 on a CCD image taken on Jan. 26.531, and
he states that a comparison with his images indicates that the new
object was not visible on the DSS.  Visual magnitude estimate by A.
Pearce, Nedlands, W. Australia:  Jan. 26.857, 9.1.

     E. Cappellaro, Osservatorio Astronomico di Capodimonte,
Napoli, reports:  "A CCD spectrum (range 370-850 nm) of SN 2002J
(cf. IAUC 7800), obtained on Jan. 26.25 UT at the European Southern
Observatory at La Silla using the New Technology Telescope (+
EMMI), reveals that the object is a type-Ic supernova, very similar
to SN 1994I near maximum (cf. Clocchiatti et al. 1996, Ap.J. 462,

SUPERNOVA 2002an IN NGC 2575
     W. M. Wood-Vasey, University of California at Berkeley and
Lawrence Berkeley National Laboratory, reports that observations at
the location of SN 2002an (cf. IAUC 7805), taken with the Oschin
1.2-m Schmidt telescope at Palomar on Jan. 17.54 UT, show nothing
to a limiting unfiltered magnitude of 19.0, indicating that SN
2002an was caught quite soon after explosion.

                      (C) Copyright 2002 CBAT
2002 January 26                (7808)            Daniel W. E. Green

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