Magnitude Distance
Distance modulus relation between apparent magnitude m , absolute magnitude M and distance d : m − M = 5 log₁₀(d / 10 pc) + A A is line-of-sight extinction in magnitudes (set to 0 if none).
About this tool
Distance modulus relation between apparent magnitude m,
absolute magnitude M and distance d:
m − M = 5 log₁₀(d / 10 pc) + A
A is line-of-sight extinction in magnitudes (set to 0 if
none). Leave any one of {m, M, d} empty and it is solved.
Conventions
- Absolute magnitude is the apparent magnitude an object would have at 10 pc.
- The Sun has absolute V magnitude M_V ≈ 4.83.
- One magnitude difference corresponds to a factor of
10^(0.4) ≈ 2.512in flux.