What is the distance between a planet and a star if the planet's orbital period is 405.40 earth days?

2016-02-17 07:12
 
(a comparison to Earth's distance to our star would be appreciated)
1#
2016-02-17
Although the formula for geosynchronous orbits is not linear, this should be close, since there is not a big difference. 405.4/365.25 = approx. 1.11 Multiply that by 93,000,000, and you get about 103,000,000. That assumes the mass of the star and planet are similar to ours
2#
2016-02-17
1.108 au
3#
2016-02-17
I believe it would also be necessary to know the mass of the star before you can calculate the distance of the planet.

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