what is the average annual proper motion of Bergards Star

Question

Stellar Evolution

Answer 1

I assume you meant Barnard's Star?

 

Not many people know the answer by heart, but I was able to find it on the internet:  10.3 arc-seconds per year.

 

You should get used to using the internet as a reference source for answering questions like this.  There's a lot of stuff on the internet that you don't want to trust, but when it comes to questions of fact like this, you can generally rely on what you find.