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dastefster dastefster
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11 years ago
Star A has an apparent magnitude of 6.00 and is 10 parsecs from Earth.  Star B is just as bright as Star A but yet is located 20 parsecs from Earth.  Due to this, what is Star B's apparent Magnitude?
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wrote...
11 years ago
It's twice as far and therefore four times as dim.
The difference in apparent magnitude you get by taking the log_10 of 4, which is 0.6.
So the apparent magnitude of star B = 6.6
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