(meteorobs) showers shifting through time

[Trenary, Carlos]

Thanks to Anne, Steve and Marco for their replies. 

There was a discussion on a non-astronomical list stating the meteor showers do not shift, because they reflect the tropical year.  Of course this did not sound correct and after a review of tropical vs. sidereal years I explained the error to them.


Carlos Trenary
Carlos.trenary at vanderbilt.edu
Carlos.trenary at gmail.com
Nashville Tennessee, USA





-----Original Message-----
From: meteorobs-bounces at meteorobs.org [mailto:meteorobs-bounces at meteorobs.org] On Behalf Of Marco Langbroek
Sent: Friday, October 11, 2013 8:35 AM
To: Meteor science and meteor observing
Subject: Re: (meteorobs) showers shifting through time

Op 11-10-2013 12:30, Anne van Weerden schreef:
> Hi Carlos,
>
>   From a relativistic point of view, orbits which are very elongated 
> should have more shift, due to their perihelion precession, than more 
> circular ones.
> But I guess there are also other influences such as gravity of the 
> large planets, I do not know much about the precise orbits of showers.
>
> Greetings, Anne