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IAUC 7382: N Sct 2000; 2000H; KL Dra

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                                                  Circular No. 7382
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 617-495-7244/7440/7444 (for emergency use only)

     Katsumi Haseda, Aichi, Japan, reports his discovery of an
apparent nova (mag 10.6) on unfiltered Kodak T-Max 400 films taken
on Mar. 5.810 UT with 0.10-m f/4 twin patrol cameras.  Exposures by
Haseda on Mar. 13.82 give mag 11.6, and an earlier image on Feb.
6.844 shows the star at mag 12.0.  An unfiltered CCD image taken by
M. Uemura and T. Kato, Kyoto University, on Mar. 14.85 yields mag
11.2 and the following position for N Sct 2000 (measured by H.
Yamaoka, Kyushu University):  R.A. = 18h34m03s.16, Decl. =
-14o45'11".5 (equinox 2000.0).  Yamaoka further reports that
spectra of the star taken on Mar. 16.81 by M. Fujii, Kurashiki,
Okayama, with a 0.28-m reflector show strong H-alpha emission (FWHM
= 940 km/s, steeper blueward), indicating that this is indeed a
nova; emission lines of H-beta and Fe II are also detected with
blueward steepness or weak absorption.  An image obtained by J.
Quinn and P. Garnavich with the 1.8-m Vatican Advanced Technology
Telescope at Mt. Graham on Mar. 16.5 shows the nova at R = 11.3
+/- 0.1, and they note that it appears to be quite blue from
UBVRI images; Garnavich adds that comparison with a IIIa-F (red)
U.K. Schmidt plate taken on 1988 Apr. 23 shows a clumping of very
faint stars near the nova's position, but that if a precursor is
present, it must be fainter than mag 18.  Additional magnitudes
(forwarded by both Haseda and Yamaoka) from T-Max 400 films taken
with 0.10-m twin patrol cameras by K. Takamizawa, Saku-machi,
Nagano:  Feb. 9.84, 12.2; 11.84, 12.0; 16.83, 11.8; Mar. 2.80, 9.9;
8.78, 12.0.  Numerous other images by Takamizawa and Haseda from
1998 Aug. 16 to 1999 Nov. 10.38 show nothing at the location of N
Sct 2000 (limiting mag 13.0-14.5).

     K. Krisciunas and A. Rest, University of Washington, report
preliminary photometry of SN 2000H obtained with the 3.5-m
telescope at Apache Point Observatory (photometric uncertainties
estimated as +/- 0.03 mag):  Feb. 10.34 UT, V = 17.30, B-V = +0.59;
14.09, V = 17.40, B-V = +0.77, V-R = +0.43; Mar. 11.11, 18.58,
+1.28, +0.67.

     N. N. Samus, Sternberg Astronomical Institute, Moscow, informs
us that the designation KL Dra has been given to this dwarf nova,
originally announced as SN 1998di (cf. IAUC 6982, 6983).

                      (C) Copyright 2000 CBAT
2000 March 17                  (7382)            Daniel W. E. Green

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