[amsat-bb] Re: Lanrangian points

[Ernie Howard]

I can recall that one or more of the Apollo moon missions was tasked with 
photographing the L1 Lagrangian. They were trying to see if there were any 
objects floating there. I don't remember the outcome.


Marc Vermeersch wrote:
> - The Lagrangian points L1, L2, L3 are not stable. A satellite positioned
> there would require constant positions corrections: complex satellite. L4
> and L5 are stable.
> 
> - When n L points are populated and you want to populate another L point,
> you have to solve an (n+2)-body problem. This becomes extremely complex.
>  
> - L4 and L5 are about the same distance from Earth as the moon: EME type
> complications for communications.
> 
> 
> http://www.physics.montana.edu/faculty/cornish/lagrange.pdf
> 
> http://www.physics.montana.edu/faculty/cornish/lagrange.html
> 
> http://en.wikipedia.org/wiki/Lagrangian_point
> 
> http://www.esa.int/esaSC/SEMM17XJD1E_index_0.html
> 
> 
> 
> -----Original Message-----
> From: amsat-bb-bounces at amsat.org [mailto:amsat-bb-bounces at amsat.org] On
> Behalf Of w7lrd at comcast.net
> Sent: January 12, 2007 08:07
> To: amsat-bb at amsat.org
> Subject: [amsat-bb] Lanrangian points
> 
> Hello Amsat'ers
> Is it possible or practical to have a communications satellite at the L1 or
> L2 points.
> 73 Bob W7LRD
> Seattle
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-- 

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Ernie Howard, Jr    W8EH    Middletown, Ohio
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