Title, I tried converting the coordinates from here to rectangular but it seems off.
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$\begingroup$ JPL Horizons. $\endgroup$– Mark AdlerApr 29, 2017 at 23:56
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$\begingroup$ err...could you tell me how? lol $\endgroup$– display nameApr 29, 2017 at 23:59
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$\begingroup$ Explore and learn. $\endgroup$– Mark AdlerApr 30, 2017 at 0:00
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$\begingroup$ I only see Heliocentric coordinates, no options for rectangular formats $\endgroup$– display nameApr 30, 2017 at 0:42
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$\begingroup$ Give us an example of the coordinates you used and the answer you came up with. $\endgroup$– Organic MarbleApr 30, 2017 at 1:44
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2 Answers
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At the bottom of your linked web page is the sentence:
If you need really accurate data for a planet or asteroid, try the JPL HORIZONS System. (These guys were navigating spacecraft through the solar system when I was still playing with GI Joe!)
...which is indeed an excellent answer to your question!
A step-by-step example of how to obtain "rectangular coordinates of the solar system planets" using Horizons can be found in this answer.
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I could not find a good live imagery of planetary positions. Also try this question in Astronomy SE.
http://www.astrosoftware.com/cpnew/software/sirius/features/skymap.html works well.
The examples in the question and the comments are valid ways to track the planets. I do see plausibility in converting the coordinates into a visual grid.
