Below are possible answers for the crossword clue Orbital period.
4 letter answer(s) to orbital period
YEAR
a body of students who graduate together; "the class of '97"; "she was in my year at Hoehandle High"
a period of time containing 365 (or 366) days; "she is 4 years old"; "in the year 1920"
a period of time occupying a regular part of a calendar year that is used for some particular activity; "a school year"
the period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun; "a Martian year takes 687 of our days"
Other crossword clues with similar answers to 'Orbital period'