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MathGroup Archive 2004

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Re: NDSolve for Newtonian Orbits Question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg47306] Re: NDSolve for Newtonian Orbits Question
  • From: "Kevin J. McCann" <kjm at KevinMcCann.com>
  • Date: Mon, 5 Apr 2004 05:22:44 -0400 (EDT)
  • References: <c4jasf$dpk$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

David,

I did your integration to t=5.25, and I got r[5.25]=2.72076+1.25993*10^-10
i. I am not sure where the small imaginary term came from, but I believe
that it is the problem. Also, I note that this occurs when r'[5.25]=0. Hope
this helps.

Kevin

"David Park" <djmp at earthlink.net> wrote in message
news:c4jasf$dpk$1 at smc.vnet.net...
> Dear MathGroup,
>
> I am trying to obtain a numerical solution for Newtonian orbits. (I can
solve the
....




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