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IAUC 8123: N Sgr 2003, V2377 Sgr; 2001id

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                                                  Circular No. 8123
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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     Independent discoveries on T-Max 400 films of an apparent nova
have been reported by Nicolas J. Brown (Quinns Rocks, W.
Australia; mag 8.9 on Apr. 25.73 UT; R.A. = 18h40m, Decl. = -33o26',
equinox 2000.0) and by Minoru Yamamoto (Doi-machi, Okazaki, Japan,
200-mm f/4 camera lens; mag 9.6 on Apr. 26.735; R.A. = 18h40m08s.2,
Decl. = -33o26'37"; via S. Nakano, Sumoto, Japan).  Nothing was
visible to mag 10.5 at this location on Yamamoto's patrol films
taken during 2000 Apr. 28-2003 Apr. 5 (though with limiting mag 9.5
on 2003 Mar. 11 and 29 films); the nearby Mira-type variable V2377
Sgr was not visible on any of these films.  Nakano forwards the
following accurate position for the new star from an unfiltered CCD
exposure taken by R. Kushida (0.40-m reflector, Yatsugatake South
Base Observatory; measured by Y. Kushida) on Apr. 27.677:  R.A. =
18h40m02s.54, Decl. = -33o26'55".1, mag 9.3; she adds that nothing
is present at this position on Digitized Sky Survey (DSS) red and
blue images.  V2377 Sgr also appeared at mag 11.3 on Kushida's
exposure at R.A. = 18h40m00s.73, Decl. = -33o27'49".6.  Nakano also
forwards position end figures 02s.57, 26'55".5 (and mag 9.3) for
the nova from an unfiltered CCD frame taken by K. Kadota (Ageo,
Japan, 0.18-m reflector) on Apr. 27.688.  A. C. Gilmore and P. M.
Kilmartin, Mt. John University Observatory, report the following
position end figures for N Sgr 2003 from a CCD exposure taken on
Apr. 27 with the 0.6-m reflector:  02s.55, 55".6 (uncertainty 0".3
in each coordinate).  Kilmartin reports a possible precursor
(apparently blended with a faint companion to its southeast) on a
red DSS image at mag R = 17.9 +/- 0.4 and position end figures
02s.58, 55".3.  Gilmore adds that L. Skuljan, University of
Canterbury, obtained an echelle spectrogram of the new star with
the Mt. John 1-m telescope around Apr. 27.67, the spectrum showing
numerous broad and bright emission lines on a generally weak
continuum.  Photoelectric photometry of the nova by Gilmore with the
0.6-m reflector (reference stars Cousins E872 and E870):  Apr.
27.667, V = 9.36 +/- 0.01, U-B = -0.84 +/- 0.03, B-V = -0.14 +/-
0.03, V-R_c = +0.54 +/- 0.01, V-I_c = +0.37 +/- 0.02 (airmass 1.04).
Visual magnitude estimates for the new nova:  Apr. 26.67, 8.5
(Brown); 27.531, 9.0 (R. Stubbings, Drouin, Vic., Australia; via
E. Waagen, AAVSO); 27.543, 9.3 (Gilmore); 27.738, 9.1 (A. Jones,
Nelson, New Zealand).

SUPERNOVA 2001id IN UGC 12424
     Corrigendum.  On IAUC 7770, line 4, FOR  5".6 south  READ
5".6 north

                      (C) Copyright 2003 CBAT
2003 April 27                  (8123)            Daniel W. E. Green

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