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#1
May 9th 08, 07:51 PM
posted to uk.sci.astronomy
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Luminosity and Apparent Magnitude
Ok, so the brightness of a star is supposed to be proportional to the
luminosity / distance squared. If a star's luminosity suddenly increases by 600 then the apparent magnitude should be +600 (since the distance is unchanged), right? Yet apparently the correct answer is that the apparent magnitude decreases by 7. Can someone please 'splain? Thanks. 
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