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The distance from Earth of the red supergiant Betelgeuse is approximately 643 light-years. If it were...

The distance from Earth of the red supergiant Betelgeuse is approximately 643 light-years. If it were to explode as a supernova, it would be one of the brightest stars in the sky. Right now, the brightest star other than the Sun is Sirius, with a luminosity of 26LSun and a distance of 8.6 light-years. How much brighter in our sky than Sirius would the Betelgeuse supernova be if it reached a maximum luminosity of 1.1×1010 LSun? Express your answer using two significant figures.

A p p a r e n t b r i g h t n e s s o f B e t e l g e u s e/ A p p a r e n t b r i g h t n e s s o f S i r i u s =_________

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