Viewed from Earth,the Sun's absolute magnitude is M = 4.8 and its apparent magnitude is m = -26.7.Viewed from Neptune,30 AU from the Sun,the Sun's absolute magnitude is:
A) 4.8.
B) 12.8.
C) -19.3.
D) -26.7.

Question

Quizplus · Accepted Answer

The absolute magnitude of a star is a measure of its intrinsic brightness, and it does not depend on its distance from the observer. Therefore, the Sun's absolute magnitude is the same when viewed from Earth or Neptune.

Viewed from Earth,the Sun's Absolute Magnitude Is M = 4