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THE ASTRONOMER Electronic Circular No 2680      2010 Oct 19 18.55UT
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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ORIONID METEORS 2010
Michael Rudenko relays on CBET 2507:
P. Jenniskens, SETI Institute, reports that the strong Orionid meteor 
shower activity of 2006-2009 may repeat this year, for a final year in 
this sequence, according to M. Sato and J.-I. Watanabe; they ascribed 
the 2006-2009 activity to dust trails of comet 1P/Halley that were 
formed by meteoroids ejected in the years 1401 BC and 12 BC.  The 
orbital evolution of the dust is affected by the 1:5 to 1:8 mean-motion 
resonances with Jupiter.  This so-called "filament" component is 
expected to be in the earth's path again around Oct. 20-25 in 2010, 
giving rise to a higher-than-normal Orionid-shower activity that is 
relatively rich in bright meteors. Sato expects a peak ZHR of 40-50 /h, 
at the same level as in 2009. As case studies, Sato calculated peak 
times of Oct. 21 9h UT for the 1266 BC dust trail and Oct. 25 4h UT for 
the 911 BC trail, both having dust survive in the 1:6 resonance with 
Jupiter.

SUPERNOVA 2010hn IN ANONYMOUS GALAXY
Discovery by La Sagra Sky Survey Supernova Search Team (LSSS) of a 
possible supernova (CBET 2444):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hn  Aug  7.01   21 43 19.14  -15 03 19.6  17.5   10.5"E,  0.5"S

SUPERNOVA 2010ho IN ANONYMOUS GALAXY
Discovery by Simone Leomini and G. Guerrini of a possible supernova 
(CBET 2445):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010ho  Sep  4.01   23 19 10.24  +09 11 54.4  16.6    3  "E, 12  "N

SUPERNOVA 2010hp IN MCG -02-01-52
Discovery by ESO Infrared Supernova Search of a possible supernova (CBET 
2446):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hp  Jly 21.26   00 18 50.01  -10 21 40.6  17.1K   2.6"W,  2.7"N

SUPERNOVA 2010hq IN UGC 3691
Discovery by Berto Monard of a possible supernova (CBET 2450):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hq  Sep  8.13   07 08 03.35  +15 11 10.0  15.2   29  "E, 25  "N

SUPERNOVA 2010hr IN MCG +07-13-6
Discovery by Grzegorz Duszanowicz, Sweden of a possible supernova (CBET 
2451):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hr  Sep  8.09   06 07 59.00  +39 15 54.4  16.8   12.5"E,  5.8"S

SUPERNOVA 2010hs IN 2MASS J02254552+2446400
Discovery by LOSS of a possible supernova (CBET 2454):
SN      2010 UT      R.A.  (2000.0)  Decl.    Mag.     Offset
2010hs  Sep 12.45   02 25 39.14  +24 45 53.6  18.6   20.3"E,  4.5"S

Guy M Hurst