Monday, January 30, 2012

What is the distance of this star from Earth in light years?

A star has an Apparent Magnitude of mv = 9, and an Absolute Magnitude of Mv = -4. What is the distance of this star from Earth in light years?What is the distance of this star from Earth in light years?its distance =10(apparent magnitude - absolute magnitude +5)/5



10^(9-4+5)5 =100



100 parsecs = 326 Light years.



wowsers



**edit**



i didn't see initially that the Absolute magnitude was NEGATIVE -4 so here is the corrected answer....

10^(9-(-4)+5)/5 = 3,981.0717 Parsecs

light year = 3.2615 Parsecs

so, 3,981.0717*3.2615=12984.2653 light years.

12,984 ly
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