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Absolute to Apparent Magnitude Calculator

Absolute to Apparent Magnitude

m = M + 5 * log10(d/10)

Apparent to Absolute Magnitude

M = m - 5 * log10(d/10)

Formula

m - M = 5 * log10(d / 10)

Frequently Asked Questions

What is the distance modulus?
The distance modulus is m - M = 5 log10(d/10), relating apparent magnitude, absolute magnitude, and distance in parsecs.
What is absolute magnitude?
Absolute magnitude is the brightness a star would have at 10 parsecs. The Sun has M = 4.83.

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