Question

What is the orbital period of each of the planets? How is the orbital period found?

Answer 1

Mercury 88.8 days Venus 224.7 days.Earth 365.24 days.Mars 687.0 days.Jupiter 4332 days.Saturn 10760 days Uranus 30700 days
Neptune 60200 days.

Explanation:

Observing their position on a star map and wait till they return to that position again. and counting days elapsed..