## distance modulusThe difference between the apparent magnitude ( m) of an astronomical object, such as star, and its absolute
magnitude (M). The distance modulus is given bym - M = 5 log d - 5
where d is the distance in parsecs.
Rearranging this enables d to be calculated from the formula d = 10^{(m - M + 5)/5}
## Related category• ASTRONOMICAL QUANTITIES | |||||

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