grumble at wolfe comment made attached to guardianarticle

David Duffy · 09 Feb 2011, 07:15 · from 2011-February.txt.gz

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From: davidD at qimr.edu.au (David Duffy)
Date: Wed, 9 Feb 2011 17:15:39 +1000 (EST)
Subject: (urth) grumble at wolfe comment made attached to guardianarticle
In-Reply-To: <4D52272C.3010600 at io.com>
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	<4D52272C.3010600 at io.com>
Message-ID: <Pine.LNX.4.64.1102091715000.405 at orpheus.qimr.edu.au>

On Tue, 8 Feb 2011, Jeff Wilson wrote:

> On 2/8/2011 9:36 PM, Gerry Quinn wrote:
>> I forgot about that.
>> But one or both could have an elliptical orbit.
>> Again, I don't know whether precession would make this unrealistic or
>> not. And 35000 leagues is incredibly, dangerously close for two
>> Earth-sized planets.
>> But in terms of basic mechanics, a series of conjunctions should be
>> possible (for story purposes, I think it would probably be sufficient if
>> the series lasted a few centuries).
>
> They could be paired in a horseshoe orbit:
>
> http://curious.astro.cornell.edu/question.php?number=210

And

http://iopscience.iop.org/1538-3881/129/3/1724/204215.text.html

But these guys keep trying to make them crash into each other ;)

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