Mail Archives: djgpp/1998/03/16/19:01:48
From: | NOSPAMsl AT psycode DOT com (Gili)
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Newsgroups: | gac.physics.astronomy,nctu.club.astronomy,relcom.fido.su.astronomy,tw.bbs.sci.astronomy,comp.os.msdos.djgpp
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Subject: | Orbits, planets, PLEASE HELP!
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Date: | 16 Mar 1998 16:51:07 GMT
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Organization: | Generation.NET
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Lines: | 26
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Message-ID: | <bWLoegW7sFse-pn2-nOBQTFs4XI88@portA01.Generation.NET>
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Reply-To: | NOSPAMsl AT psycode DOT com
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NNTP-Posting-Host: | portD25.Generation.NET
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Mime-Version: | 1.0
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To: | djgpp AT delorie DOT com
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DJ-Gateway: | from newsgroup comp.os.msdos.djgpp
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Hello,
I have a science project due next week. I am programming something
which will find the most efficient orbit given certain parameters.
However, I have been unable to find the locations of all planets (and
their moons) in our solar system at a fixed time. In order for my
program to work, I must have the positions of all planets (and their
moons) at a fixed time (so I know where they all begin off) and I also
need to know their exact velocity at that given time.
My program will launch a rocket into space where it will be totally
under the influence of gravity (which is why I need to know the
positions/velocities of those planets.) However, I have run into
another problem, how do I know the positions of the planets in the
solar system after 1 second has past? The same goes for my rocket..
I can resolve the force vectors being applied by all the
planets/moons on my rocket, and I know its position and velocity. But
where do I go from there? How do I know where it will be a second
later?
Please help me as soon as possible. Thank you,
PS: Please email your response to "sl AT psycode DOT com"
Gili
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