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IAUC 8580: 2005dd, 2005de,, 2005df; Var STAR NEAR IC 1309

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IAUC number 

                                                  Circular No. 8580
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
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SUPERNOVAE 2005dd, 2005de, AND 2005df
     Further to IAUC 8570, E. Lee, N. J. Ponticello, and R. J.
Foley report the LOSS/KAIT discovery of two apparent supernovae on
unfiltered KAIT images, as tabulated below.  SN 2005de was
independently discovered by T. Puckett and J. Tigner at mag 18.0 on
an unfiltered CCD frame taken with the 0.60-m patrol telescope (cf.
IAUC 8569) on Aug. 3.13 UT.

SN      2005 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2005dd  Aug. 1.46    2 34 36.57  + 1 20 53.2  18.6   10".7 E, 1".6 N
2005de  Aug. 2.28   18 02 23.36  +26 03 07.7  18.1   17".3 W, 33".1 N

Puckett provides position end figures 23s.37, 07".9 for SN 2005de.
Additional approximate unfiltered magnitudes from the discoverers:
SN 2005dd in UGC 2062, 2004 Jan. 16 UT, [19.0; 2005 Aug. 3.50, 18.8.
SN 2005de in UGC 11097, 2002 Aug. 12, [20.0 (Puckett); 2004 Oct. 5,
[20.0 (Puckett); 2005 July 28.29, [19.0 (KAIT); Aug. 3.26, 17.6
(KAIT); 4.13, 17.3 (Puckett).
     R. Evans, Hazelbrook, N.S.W., reports his visual discovery of
an apparent supernova (mag about 13.8) with a 0.31-m reflector on
Aug. 4.625 UT.  SN 2005df, which is about 15" east and 40" north of
the center of NGC 1559, was not visible on July 29.6 (limiting mag
15.0), and nothing appears at this location to mag about 19 on the
European Southern Observatory 'B' Survey or on an image of the
galaxy in Wassilieff's CCD Atlas.  Evans also found SNe 1984J and
1986L in NGC 1559.  A. Gilmore, Mount John Observatory, reports the
new object at R = 13.7 on a 10-s CCD image taken with the 0.6-m
f/6.4 reflector on Aug. 5.44, providing the following precise
position for SN 2005df:  R.A. = 4h17m37s.85, Decl. = -62o46'09".5
(equinox 2000.0); nothing is visible at this location on a Digital
Sky Survey image.


VARIABLE STAR NEAR IC 1309
     Ponticello and Foley also report the discovery of a variable
star located at R.A. = 20h03m00s.24, Decl. = -17o12'11".4 (equinox
2000.0), which is 17".5 west and 103".4 north of the nucleus of IC
1309.  Approximate KAIT magnitudes:  July 28.32 UT, [19.0; 29.31,
18.8 (hint of the object); Aug. 2.30, 17.2; 3.31, 17.2.  J. Greaves
notes that a star is catalogued (in the GSC and USNO-B1.0) near
this position, with USNO-A2.0 end figures 00s.271, 12".10 (red mag
17.6, blue mag 20.1); he adds that the possible long-period
variable is visible on blue and red sky survey plates (1977.5483,
1982.7064, 1988.5462, 1992.3546), but not on 1987.7084 red or
1953.6194 red and blue plates.

                      (C) Copyright 2005 CBAT
2005 August 5                  (8580)            Daniel W. E. Green

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