Absolute Magnitude13.2 - Understand the term absolute magnitude
Absolute magnitude is a useful way of finding out how bright a star would appear from a certain point in space. By doing this we understand each star's true magnitude.
The true absolute magnitude for the Sun is 4.2 whereas to us on Earth it is -27.
It is the brightness of a star at a distance of 10 parsecs which is 32.6 light years.
In calculations apparent magnitude is represented by M.