If star B is a 5th magnitude star and star C is 9th magnitude, what is their brightness ratio? Light from Sirius has 24.2 times as much flux as the light from Polaris. What is their magnitude difference? If the apparent magnitude of Polaris is 2, what is the apparent magnitude of Sirius?
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If star B is a 5th magnitude star and star C is 9th magnitude, what is their brightness ratio? Light from Sirius has 24.2 times as much flux as the light from Polaris. What is their magnitude difference?
If the apparent magnitude of Polaris is 2, what is the apparent magnitude of Sirius?
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