Determine how many times the brightness of Sirius is greater than the brightness of Venus.

Determine how many times the brightness of Sirius is greater than the brightness of Venus. The stellar magnitude of Sirius m = -1.5, Venus mv = -4.5.

decision
E1 / E2 = 2.512 ^ (m2-m1); E1 / E2 = 2.512 ^ -1.5 + 4.5) = 2.512 ^ 3 = 15.85

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