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Absolute magnitude
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==== Examples ==== [[Rigel]] has a visual magnitude {{math|''m''<sub>V</sub>}} of 0.12 and distance of about 860 light-years: <math display="block">M_\mathrm{V} = 0.12 - 5 \left(\log_{10} \frac{860}{3.2616} - 1 \right) = -7.0.</math> [[Vega]] has a parallax {{mvar|p}} of 0.129β³, and an apparent magnitude {{math|''m''<sub>V</sub>}} of 0.03: <math display="block">M_\mathrm{V} = 0.03 + 5 \left(\log_{10}{0.129} + 1\right) = +0.6.</math> The [[Black Eye Galaxy]] has a visual magnitude {{math|''m''<sub>V</sub>}} of 9.36 and a distance modulus {{mvar|ΞΌ}} of 31.06: <math display="block">M_\mathrm{V} = 9.36 - 31.06 = -21.7.</math>
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