What is the measured parallax of stars used for? Which is brighter, magnitude 5 or magnitude 0? What two things does a star’s apparent magnitude depend on?

Part 1 Study Questions

1. What is the measured parallax of stars used for?
2. Which is brighter, magnitude 5 or magnitude 0?
3. What two things does a star’s apparent magnitude depend on?
4. What one thing does a star’s absolute magnitude depend on?
5. What is a star’s luminosity?