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THE ASTRONOMER Electronic Circular No 3025      2014 Sep 20 19.11UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
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DUST TRAIL OF COMET 17P/HOLMES
E. Lyytinen et. al, Helsinki, Finland, report that the convergence of dust
ejected by comet 17P/Holmes in 2007 is now detected at the position in the
orbit where it was originally released.

The dust trail was centred at R.A. = 4h57m28s, Decl. = +41d39'02" (2000) on
Aug. 27d 11h 00mUT and oriented toward position angle 90.7 deg. The
detection was made with the Californian iTelescope T24, after subtracting
stacked images taken on Aug. 25 and 26 from those taken on Aug. 27.  The
peak surface brightness is 5.8 mag per square arcsecond fainter than the sky
background (assumed to be 21.0 mag per square arcsec).  This convergence is
expected to be visible during the coming year, even when the earth is not in
the plane of the comet orbit.  The surface brightness of the dust trail is
expected to increase until about Sept. 15.54, when the comet approaches the
point of its orbit where maximum dust outflow happened in 2007, and will
only gradually decrease in the months thereafter, with predicted coordinates
for the position of the trail given by Lyytinen et al. (2013, JIMO 41,
77-83).

SUPERNOVA 2014cb IN PGC 53008 (PARKER)
2014cb  Aug 18.30   14 50 49.90  -13 31 03.7  16.4r 25  "E   27  "N 
An image of the variable is available via http://tinyurl.com/kwkejhg
L. Tartaglia: spectrum Aug 18 European Southern Observatory's New Technology
Telescope at La Silla suggests a good match to several type-Ia supernovae at
B-band maximum light.

SUPERNOVA 2014cc IN NGC 2255 (PARKER)
2014cc  Aug  9.76   06 33 57.76  -34 48 27.6  15.9r 10  "W   17  "N  
An image of the variable can be seen via website URL
http://tinyurl.com/phb5zvv
N. Elias-Rosa: spectrum Aug 15 with the European Southern Observatory's New
Technology Telescope at La Silla shows that this is a normal type-Ia
supernova at about three weeks after B-band maximum light.

SUPERNOVA 2014cd IN NGC 1578 (PARKER)
2014cd  Aug  9.76   04 23 47.19  -51 36 02.9  15.9r  5  "E    5  "S
An image can be seen via website URL http://tinyurl.com/nf35auk
N. Morrell: spectrum Aug 14 with the LCO 6.5-m Magellan Baade telescope
indicates it is a type-Ia supernova a few days before maximum.

SUPERNOVA 2014ce IN NGC 7673 (LOSS)
2014ce  Aug  9.52   23 27 40.86  +23 35 21.4  17.0   2.9"W    1.4"N
S. T. Hodgkin: spectrum Aug 20 using the EFOSC2 spectrograph shows a blue
continuum, Balmer lines with P-Cyg profiles, and He I, consistent with a
type-II supernova around seven to ten days after explosion and at a redshift
of 0.011.

Guy M Hurst