(meteorobs) Orionids

[Mikiya Sato]

Dear all,

I am Mikiya Sato.
I calculated dust trails of Orionids in 2007. 
I am submitting this newsto CBET, but it has not been announced yet.
So, I report to this ML, meteorobs.
This year, the earth will encounter the dust trails which were ejected
 in -1265 and -1197.

Trail  Date(UT)       Time   Sol.Lon. D-r(AU)  fM
-1265  2007/10/19.95  22:52  206.067  -0.0038  0.0016
-1197  2007/10/21.71  17:05  207.815  +0.0052  0.0018
-1197  2007/10/21.71  17:02  207.813  +0.0051  0.0019
-1197  2007/10/21.84  20:06  207.940  +0.0058  0.0017

But "fM value" of this year trails is smaller than one of last year
 trails. So, an expected peak will be so weak in this year.
The details will be released in the web site at;

http://fas.kaicho.net/tenshow/meteor/1p2007/Ori2007.htm

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Our paper about Orionids 2006, can be seen as follows;

http://pasj.asj.or.jp/v59/n4/590401/590401.pdf
(Until Oct 25! )

Best regards,

Mikiya Sato (@NAOJ)