Gliese 832 is a star with an absolute magnitude of 10.2. The star is located 16.2 light-years away from Earth. What is the apparent magnitude of Gliese 832? Give your answer to 3 significant figures.
Alpha Centauri B is a star with an apparent magnitude of 1.34, as viewed from Earth. Epsilon Eridani is a star with an apparent magnitude of 3.73, as viewed from Earth. Which star appears brighter as viewed by an astronomer on Earth?
Luyten 726-8 B is a star located 2.70 pc away from Earth with an apparent magnitude of 13.0. What would the star’s apparent magnitude be if it were located 5.00 pc away? Give your answer to 3 significant figures.