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THE ASTRONOMER Electronic Circular No 2703      2011 Jan 02 13.36UT
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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QUADRANTIDS: MAX 2011 JAN 03d18h UT
The following notes relating to the Quadrantids meteor shower by Tony 
Markham are taken from the website of 'The Astronomer.

The Quadrantid radiant, lying at Dec +50, is circumpolar for observers 
north of latitude 40 N. The radiant is at its lowest altitude at around 
20h local time and is highest at the end of the night. The maximum is 
usually rather narrow, with the predicted time for 2010 favouring 
observers at Asian Longitudes. However it should be noted that the 2009 
peak was broader than usual with the ZHR being above 100 for nearly 12 
hours. The Moon will have been Full on Dec 31 and so will still be a 
problem from mid evening onwards by the night of maximum.

A map showing the radiant can be found at:
http://www.theastronomer.org/meteors/quadrantid_radiant.jpg

SUPERNOVA 2010kp IN 2MASX J04034059+7045116 (Itagaki)
2010kp  Dec  8.60   04 03 38.85  +70 45 15.7  17.9    8  "W,  4  "N

SUPERNOVA 2010kq IN UGC 1769 (CRTS)
2010kq  Dec  7.23   02 18 10.92  +37 05 42.4  18.3    0.3"E,  4.9"S

SUPERNOVA 2010kr IN UGC 5893 (LOSS)
2010kr  Dec  1.59   10 47 38.17  +38 55 24.9  18.1    2.3"W,  2.4"S

SUPERNOVA 2010ks IN UGC 5622 (CRTS)
2010ks  Dec 11.46   10 23 42.44  +33 46 49.0  17.0    7.8"E, 22.0"N
The presumed host galaxy, UGC 5622, has redshift z = 0.033.

SUPERNOVA 2010kt IN GALAXY CLUSTER NGC 1759 (CHASE)
2010kt  Dec 10.31   05 00 39.19  -38 40 46.1  16.8     -       -
G. Pignata, Universidad Andres Bello et. al., report on an optical 
spectrogram of Dec. 13.14 UT with the SOAR telescope suggesting it is a 
normal type-Ia supernova at about two weeks after maximum light.

SUPERNOVA 2010ku IN IC 716 (CHASE)
2010ku  Dec 16.31   11 39 04.78  -00 12 40.2  16.8   21.7"E, 19.0"S

(596) SCHEILA OUTBURST
Further to TA E-Circular 2694, L. A. Molnar, Calvin College, reports on 
CBET 2592 that photometric light curve observations of the minor planet 
(596), taken on 2010 Dec. 14.30-14.54 and 15.33-
15.53 UT with the 0.40-m f/8 Ritchey-Chretien telescope of the 
Calvin-Rehoboth Observatory, folded on the rotational period of Warner 
display a shape similar to those previous measurements with an amplitude 
that is the same (0.09 magnitude).  The average brightness was observed 
to be a full magnitude above the expected value, as it has been since 
the outburst was first observed on Dec. 3 (Warner and Harris, CBET 2590; 
Larson, IAUC 9188).  There are two models of the increased brightness:
a) reflection off material surrounding the solid object (as in a 
cometary outburst)
b) increased albedo of the object's surface (caused by a coating of 
lighter material).
The cometary outburst model suggests a light curve amplitude diminished 
by 2.5 times, and is thus disfavoured. The albedo model
predicts no large change in amplitude, as is observed; it also predicts 
that the enhanced brightness will persist indefinitely.

Guy M Hurst

(CORRECTION RE METEOR DATE)