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From: news@cit-vax.Caltech.Edu (Usenet netnews)
Newsgroups: sci.astro
Subject: Re: Transits of Planets
Message-ID: <1183@cit-vax.Caltech.Edu>
Date: Sat, 15-Nov-86 03:27:18 EST
Article-I.D.: cit-vax.1183
Posted: Sat Nov 15 03:27:18 1986
Date-Received: Sat, 15-Nov-86 23:52:59 EST
References: <1240@ncr-sd.UUCP> <13@spar.SPAR.SLB.COM>
Reply-To: jon@cit-vax.UUCP (Jon Leech)
Organization: California Institute of Technology
Lines: 20

Organization : California Institute of Technology
Keywords: Transits
From: jon@oddhack.Caltech.Edu (Jon Leech)
Path: oddhack!jon

In article <13@spar.SPAR.SLB.COM> freeman@spar.UUCP (Jay Freeman) writes:
>
>    Each planet should see transits of all planets inferior to itself.  Proof:
>The orbital planes of every pair of planets necessarily intersect in at least a
>line.  By happenstance, sooner or later both planets will both be on the same
>side of the Sun, "on" that line.  At that time, the superior planet will see
>a transit of the inferior.
>
	It seems to me that with the right sort of resonant orbits
this would not always be true (nitpicking admittedly). I'd be interested
in hearing more about this from someone better informed.

    -- Jon Leech (jon@csvax.caltech.edu || ...seismo!cit-vax!jon)
    Caltech Computer Science Graphics Group
    __@/