The asteroid Apophis will skim close to earth in 2029 but according to the animation it will be very close to the moon aswell, will this mess up the moon`s orbit?

Question

Title explains it, the animation is in this article from Iflscience
But phew that was “close” to hitting the moon.

https://www.iflscience.com/astronomers-just-updated-the-chance-infamous-god-of-chaos-asteroid-will-hit-earth-73240

In: Planetary Science

Answer 1

So the technical answer is yes – all objects with mass will affect every other object in the universe. So the asteroid will change both the orbit of the moon and the orbit of the Earth (as well as every other object).

The practical answer is no – the asteroid is _so much_ smaller than both the Earth and the Moon that the effects on orbits will likely be too small to even observe.

Answer 2

The moon is 1000000000000 times more massive than Apophis, and so will exert 1000000000000 times more gravitational disturbance on the asteroid than the asteroid can exert on the moon.

The effect on the moon’s orbit will be negligible, but the effect on the asteroid’s orbit may be significant.

Answer 3

Apophis has a mass of 61,000,000,000 kgs. Estimated.

The moon has a mass of 73,420,000,000,000,000,000,000 kgs.

That’s 0.000000000083% of the moon’s mass.

No, Apophis is not going to mess up the moon’s orbit. It will interact with it and cause extremely miniscule changes….. but they will be so absolutely tiny that you can basically ignore them.

Answer 4

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