The modern system of apparent magnitudes uses the star Vega as its basis. In this scheme Vega is defined to have an apparent magnitude of
A) 10.
B) 1.0.
C) 0.0.
D) -1.0.

Question

Quizplus · Accepted Answer

In the modern system of apparent magnitudes, Vega is defined to have an apparent magnitude of 0.0, serving as the baseline for the scale that measures the brightness of celestial objects as seen from Earth.

The Modern System of Apparent Magnitudes Uses the Star Vega