- #1

- 1

- 0

I need the derivation and analytic calculation.

If we assume the plane of rotation is different for earth and mars, the problem become to complicated. So the orbits may be assumed co-planner.Please provide me some useful links...

- #1

- 1

- 0

I need the derivation and analytic calculation.

If we assume the plane of rotation is different for earth and mars, the problem become to complicated. So the orbits may be assumed co-planner.Please provide me some useful links...

- #2

mfb

Mentor

- 34,987

- 11,185

The minimal distance when? Within the next 100 years, or within geological timescales?

55.7 million km

You get a rough approximation by subtracting mars' perihelion and earth's semi-major axis:

Earth 149,598,261 km

Mars 206,669,000 km

Difference 57 million km.

A better value would require to look at earth's eccentricity and the relative orientation of the ellipses.

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