How much fainter is a 30th magnitude star than Alpha Centauri?

Please include it in scientific notation. Bonus points awarded for correct answer! =] <3

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  • Zardoz
    Lv 7
    9 years ago
    Favorite Answer

    Alpha Centauri has a composite magnitude of -0.27; therefore, it is 2.512^(30 + 0.27) times dimmer than a 30 magnitude star. That's 1.28(10¹²) times dimmer.

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