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How often are the effects of proper motion on nearby stars noticed?

Answer 1

It will take thousands of years to see nay changein constellation patterns.

The nearest star with the highest proper motion is called Barnard's star, and it moves at a rate of 10.3 arc seconds per year. An arc second is equivalent to 1/3600 of a degree. The stars are so far away that we cannot observe changes in their patterns for thousands of years.

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Answer 2

Olivia Aldridge

Because stars move slowly across the sky, the effects of proper motion on nearby stars are usually observed over long epochs, ranging from decades to centuries.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.