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Q&A

How does one calculate the length of a planet's solar year?

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I have a planet with a specified sidereal day and sidereal year, and a solar day. But how can I determine the length of its solar year from this?

Sidereal day: 1d 1h 52m 11s

Solar day: 1d 1h 54m 36.45402s

Sidereal year: 379d 5h 54m

Semi-major axis: 0.9675 au (144,735,939.90225 km)

Orbital eccentricity: 0.272

Periapsis: 0.704 au (105,316,900.9728 km)

Apoapsis: 1.231 au (184,154,978.8317 km)

Axial tilt: 9.87°

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This post was sourced from https://worldbuilding.stackexchange.com/q/112738. It is licensed under CC BY-SA 4.0.

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