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sci.distance-modulus-parallax Calculator
Calculates distance modulus μ = m − M = 5 log₁₀(d/10 pc) from apparent magnitude m and absolute magnitude M, and stellar distance from parallax. At 10 pc (parallax = 0.1 arcsec), distance modulus = 0 — the Large Magellanic Cloud at 50 kpc has μ = 18.5.
Inputs
M Apparent
Reference formula or conversion factor shown for context.
M Absolute
Reference formula or conversion factor shown for context.
Parallax Mas
Reference formula or conversion factor shown for context.
Results
distance (parsecs)
The computed distance or separation.
distance (light-years)
The computed distance or separation.
distance modulus μ = m − M
The computed distance or separation.
d from distance modulus (pc)
The computed distance or separation.
μ = m − M = 5·log₁₀(d/10pc) | d = 1/p (parallax in arcsec)