How to calculate absolute magnitude.mp4

This video describes how to calculate absolute magnitude if we know apparent magnitude and distance.
This is a common gcse astronomy question.

[@stephaniedeans1714]

Thank you very much I am studying GCSE astronomy and I found it very helpful.

[@piccolodiavlo]

Really helpful video. With Parsecs that have a value between 1 and 10, or have a series of numbers (eg 1.2345), you'd still multiply by the log function to get the value needed to multiply by 5? I haven't used equations of a broader sense for quite a while but am aware of the conceptual value they bring once understood. Thanks again J

[@DavidDrumm123]

hi Justin
you would need to use the log button on your calculator

[@barcan8371]

thank you! good and simple explanation.

[@xfunk1gaming]

explained this whole concept very clearly thanks!

[@murfeel1173]

VERY thorough; thank you so much!

[@Atila_Handpan_Class]

This was helpful, but what if the distance of a star is 20,000 parsecs from us, or 573,786 parsecs?

[@DavidDrumm123]

you have a log10 button on your calculator

[@malisaac6439]

If there is any confusion- yes the absolute magnitude is -15.5!!!

[@DavidDrumm123]

there was a minus sign on the video ...

[@thomassoliz3864]

the absolute value of -15.5?

[@thomassoliz3864]

15.5 or negative 15.5?

[@malisaac6439]

negative 15.5

[@maheshtapre5472]

I'm 13 yrs old and I'm studing astronomy thanks to explain me very clearly.