solar system coordinates in java

Hi
I am making a simulation of the inner planets of the solar system using the three-step Beeman scheme. I am confused about how to display the planets. for my starting inputs I have the data from NASA JPL website, so for the Earth I have the following:

Code:

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Planet Name        positionX                    positionY                    velocityX(km/s)            velocityY(km/s)      radius        acceleration        mass(kg)
Earth                -1.685246520883574E-01  9.687833042792607E-01        -1.723394582127405E-02        -3.007660313409631E-03          50            0                5.9736e+24

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These values are huge so how do I convert these to the cartesian coordinates that JAVA uses?

Thanks

Quote:

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These values are huge so how do I convert these to the cartesian coordinates that JAVA uses?

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You scale them to fit the display area you have available to you.

Find the largest planet coordinate (call it A), find the largest screen co-ordinate you want to use (call it B) and divide all the planet coordinates by A and multiply them by B. This will give you the screen location co-ordinates.