Astronomy - Ch. 17: The Nature of Stars (5 of 37) Distance=? given Absolute & Apparent Magnitude

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In this video I will explain how to find distances to stars given absolute and apparent magnitude.

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This is the most informative video about astronomy I’ve watched. Bravo🎉

PZK

You are great. Thank you very much for many clips about astronomy. My son is preparing for Thailand Astronomy Olympaid#16 end of this month. We mainly study from your clips. Excellent explanation, you made very difficult thing to be simple and fun.

adisakpirom

Beautiful subject. Please extend you work to Galaxy sciences and Galactic Halo. Thanks a lot

-ne

I have a problem. When I wanna calculate the distance between the Earth and the Sun I need app magnitude and abs magnitude, but when I know only app magnitude and I want calculate abs magnitude I need know distance, but I don't know that, cause distance is what I have to calculate. What should I do please?

filipspace

thank you so much. that was way more helpful than my textbook

javeer

Can I use the formula m-M=5log(d/10) to find the distance of the star away from the earth? d=214.78pc

T

Maybe in these sites the Absolute magnitude I found is -5.14 instead -6.0. What is the abs.mag of Betelgeuse?

juremadecarvalho

this distance is from that reference line or from earth?

lordlyamiga

I found the different distance for Betelgeuse in many sites (427 ly). Why?

juremadecarvalho

It's the end of October and I can't wait for Orion to rise over the horizon later in the night, so I can see in my 70mm binoculars Betelgeuse's reddish glow.

wastaggio

You just forgot to explain how you found the absolute magnitude. You just gave it a value of (-6.02) but where does that value come from?

soleilenvierge

Astronomy - Ch. 17: The Nature of Stars (5 of 37) Distance=? given Absolute & Apparent Magnitude

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Astronomy - Ch. 17: The Nature of Stars (15 of 37) Comparing Luminosity

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Astronomy - Ch. 17: The Nature of Stars (5 of 37) Distance=? given Absolute & Apparent Magnitude