Absolute Magnitude and Distance Modulus Calculator
Calculate the absolute magnitude from apparent magnitude and distance.
parsec
Result
0 kadir
Absolute magnitude (M): 0
Result in all units
Step-by-step solution
M = m − 5·log₁₀(d/10)
What Is Absolute Magnitude?
Absolute magnitude is the brightness a star would have if seen from a distance of 10 parsecs. It lets you compare stars by their true luminous power.
How is it calculated?
How Is It Calculated?
M = m − 5 × log(d ÷ 10)
m: apparent magnitude, d: distance (parsecs).
- Enter the apparent brightness and the distance.
Frequently Asked Questions
What does a small magnitude number mean?
A small (even negative) magnitude means a brighter star; the scale is reversed.