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Re: NASA proposed project: TRIANA

Hi Roy,

I can't remember where, but I heard this orbit described as a "halo" orbit.
Its balanced between the gravitational pull of the Sun and the Earth, but it
is closer to the Earth so it must maintain a circular path  (or halo) on the
Sun side of the Earth to resist the Earth's gravity.  Kind of a combination
Sun/Earth orbit.

Isn't there a satellite monitoring solar energy that is in a similar
orbit -- provides early warning of solar radiation that might effect
satellite and terrestrial communications??

Maybe there is someone on the list that can explain this unusual orbit
better then I can?  :-)

73  Tom  n0ntx

-----Original Message-----
From: Roy Welch <rdwelch@swbell.net>
To: Gregory S. Williams <ke4hsm@icx.net>
Cc: rosenberg.eric@orbcomm.com <rosenberg.eric@orbcomm.com>;
amsat-bb@AMSAT.org <amsat-bb@AMSAT.org>
Date: Monday, April 06, 1998 10:10 PM
Subject: Re: NASA proposed project: TRIANA

>What I want to know is just how do you keep a satellite over the sunlit
>side of the earth.  Looks like it would take a one orbit per year bird.
>Isn't that going to be sorta far out there?  Lots of stuff it will be able
>to see on that bright dot called Earth, way out there among the stars.  Why
>it might even bump into the sun and give the VP a real thrill.  Is NASA
>really planning to do this or is someone getting up enough nerve to explain
>things to the VP?