Earth orbit vs. changing mass of Sun

Dorje

What effect does the rate of decrease of mass of the Sun (-6 x 10^11 kg/s) have on Earth orbit? Will the orbit become significantly more elliptical over, say, a billion years? And if so, what effect would this have on climate?

russ_watters

Since the sun's mass is roughly 2x10^30 kg, it will lose roughly .07% of its mass in its lifetime. Not enough to make a noticeable difference.

Phobos

Welcome to PF, Dorje!

...and then there's the 100 tons of meteoroids that enter the Earth's atmosphere each day...still only a millionth of a percent increase to the Earth's total mass over the next few billion years

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Dorje	Earth orbit vs. changing mass of Sun What effect does the rate of decrease of mass of the Sun (-6 x 10^11 kg/s) have on Earth orbit? Will the orbit become significantly more elliptical over, say, a billion years? And if so, what effect would this have on climate?

russ_watters Mentor	Since the sun's mass is roughly 2x10^30 kg, it will lose roughly .07% of its mass in its lifetime. Not enough to make a noticeable difference.

Phobos Recognitions: Gold Member Science Advisor Staff Emeritus	Welcome to PF, Dorje! ...and then there's the 100 tons of meteoroids that enter the Earth's atmosphere each day...still only a millionth of a percent increase to the Earth's total mass over the next few billion years