The Selenocentric 3D model of a Solar system

General physics and astronomy discussions not directly related to Celestia
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veritaspsf
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Joined: 15.01.2011
With us: 13 years 10 months

The Selenocentric 3D model of a Solar system

Post #1by veritaspsf » 22.01.2011, 18:11

Can anybody help me to realize the following project? The center of the Moon's mass is made fixed. Let it be named "M". From M we draw a ray (R) toward the center of the Earth's mass which is located, say, to the right. Let us call it "E". The rotation axis of the Moon (or Mra for short) and the ray R which starts from M and goes through E must stay always coplanar -- they lay on the M-Mra-R-E plane.

Then, I am interested how the centers of mass of all other objects of the Solar system (eight planets, and the Sun) will change their disposition with time. The relational disposition of all the objects must be taken real. The time of revolution of all the objects around the M-R-E sytem must be made acceleratable, and changable as forth so back (in time). The moving picture must be made viewable from the all sides of the M-Mra-R-E plane; at that, R stays always perpendicular to the direction toward the observer. The proper rotation of the planets, the Moon, and the Sun around their own axes may be ignored. The rotation axis of each object should be shown as a section which is divided by half by the center of mass of the correspondent object.

I may suppose that with time, the E will periodically move to and fro the M. The tilt of rotation axis of both the Moon and the Earth will be changing periodically too. But how the centers of mass of other objects will behave? And exactly this whole picture I have to demonstrate. So, which program can be taken as a basis to realize such a project? Much thanks in advance for any advice.

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selden
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Re: The Selenocentric 3D model of a Solar system

Post #2by selden » 23.01.2011, 11:36

Celestia shows this if you use the "lock" command.: select Earth, select Moon, type a ":", change the viewpoint to whatever is appropriate, change the rate of time to whatever is appropriate, and observe the motion of other objects, perhaps MARKing them to make them visible.

Celestia doesn't draw objects' paths across the screen, but you could overlay multiple screengrabs and use a paint program to draw appropriate lines.
Selden


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