(meteorobs) Dust Trail of Eta Aquariids in 2013

[Mikiya Sato]

Dea all,

I am Mikiya Sato.
I found out that the old dust trails of Eta Aquariids (ETA) will 
approach the earth in 2013.

The outline is as follows.

Trail   Date(UT)        S.Lon(deg) R(au)     Ej.V(m/s) fM
 -910   May.06 05:45    45.682     -0.0018   -2.12     0.095
 -910   May.06 06:27    45.710     -0.0017   -2.11     0.017
-1197   May.06 12:37    45.959     +0.0021   +3.44     0.013
-1197   May.06 21:19    46.310     -0.0026   +3.43     0.012

In addition, -1403, -1333, -1265, -1128, -985, and -835 trail 
also tend to approach the earth.
The peak may be continuous or broader because distribution of 
the old dust has spread.

But, the increase in the number of meteors is unknown about ETA.
I expect that they are about 2 times of the usual activity at 
the maximum because this case is similar to Orionids from 2006 to 2010.
Detection of the increase is not easy since observation condition 
of ETA is not so good in the Northern Hemisphere.
However, please take notice of the appearance this year. 

Best regards,

Mikiya Sato
mail at kaicho.net