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IAUC 8310: 2004aw; V5114 Sgr; 2004 FH

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                                                  Circular No. 8310
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)


SUPERNOVA 2004aw IN NGC 3997
     Independent discovery reports have been received of an
apparent supernova in NGC 3997 from T. Boles (Coddenham, England,
0.35-m reflector) and from K. Itagaki (Teppo-cho, Yamagata, Japan,
0.60-m reflector; via S. Nakano, Sumoto).  Boles measures the
position of SN 2004aw as R.A. = 11h57m50s.24, Decl. = +25o15'55".1,
which is approximately 27".7 east and 19".8 south of the center of
NGC 3997.  Itagaki provides position end figures 50s.26, 55".1.
Unfiltered CCD magnitude estimates of SN 2004aw:  2001 Nov. 25 UT,
[18.5 (Itagaki); 2003 May 7, [19.5 (Boles); Mar. 13, [18.5
(Itagaki); 19.851, 17.1 (Boles); 20.51, 15.8 (Itagaki); 20.646, 16.2
(R. and Y. Kushida, Yatsugatake South Base Observatory).  Boles
adds that the new object is not present on 1996 Digitized Sky
Survey red and blue images.


V5114 SAGITTARII
     Further to IAUC 8307, H. Yamaoka, Kyushu University, notes
that V5114 Sgr was also not visible on an ASAS-3 image taken on
Mar. 12.38 UT (limiting mag about 13.5).  He adds that a CCD image
taken by K. Itagaki on Mar. 18.8 shows the nova at R.A. =
18h19m32s.19, Decl. = -28o36'35".0 (equinox 2000.0; about 70 UCAC-2
reference stars, uncertainty about 0".3).  Nothing is visible on a
Digitized Sky Survey red image within 2" of this position.
     B. E. Schaefer, Louisiana State University, writes that CCD
images obtained with the 0.8-m telescope at McDonald Observatory
show no visible light echo.  Reported CCD magnitudes and colors for
V5114 Sgr:  Mar. 19.336 UT, V = 8.64 +/- 0.03, B-V = +0.66 +/- 0.05
(W. Liller, Vina del Mar, Chile); 19.467, V = 8.76 (J. D. West,
Mulvane, KS); 19.471, B = 9.28 (West); 19.49, U = 8.87, B = 9.23, V
= 8.65, R = 8.01, I = 7.38 (Schaefer); 20.49, U = 9.08, B = 9.53, V
= 9.00, R = 8.19, I = 7.42 (Schaefer); 19.695, V = 8.73, U-B =
-0.50, B-V = +0.51, V-R = +0.66, V-I = +1.18 (A. C. Gilmore, Mt.
John Observatory; uncertainties about 0.02 mag).


2004 FH
     G. W. Christie, Auckland Observatory, reports that his
unfiltered CCD photometry (3-s exposures approximating the R band)
of 2004 FH (cf. MPEC 2004-F24, 2004-F26) during Mar. 18.487-18.499
shows light variations with a period of approximately 90 s (nine
clear maxima) and a variable amplitude of approximately 0.9
magnitude (ranging from mag 13.8 to 12.9).

                      (C) Copyright 2004 CBAT
2004 March 20                  (8310)            Daniel W. E. Green

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