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distance from the sun

and the age of the star

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Q: What are two factors that determine the brightness of a star?
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What two factor affect a stars apparent brightness?

Two factors that affect a star's apparent brightness are: 1.) The distance between the Earth and the star 2.) The absolute magnitude (the actual brightness) of the star Hope that helps :P


Looking at the H-R diagram what 2 factors determine the brightness of a star?

The H-R diagram graphs total brightness versus surface temperature (related to color); by itself, it doesn't tell you where those two things come from.The brightness of a star depends on its mass, and on where it is in its development history.


Which two factors determine the characteristics of a star?

Its mass and its stage of life


What two major factors determine the size of a star?

because u suck


What two factors determine the characteristics of a star?

It's mass and it's stage of life.


What are the two factors that determine how bright a star looks from earth?

proximity to the moon and distance


What two factors determine how bright a star looks from earth?

The two factors are temperature and luminosity based on the HR diagram. The stage of the star in its life cycle also plays a key part.


What two things must an astronomers find out in order to calculate a star's absolute brightness?

It's distance from Earth and the star's actual brightness


What two factors determine how bright a star looks like from earth?

It's luminosity and it's distance from Earth


What factors determine a biome?

Two factors that determine a biome are precipitation and temperature.


What 2 factors determine a star's apparent magnitude?

There are three factors, actually. The star's size and temperature determine the absolute magnitude, or how bright the star really is. Those two factors can be considered as one - the star's absolute magnitude. The absolute magnitude combined with our distance from the star determines its apparent magnitude, or how bright the star appears to be from Earth. So, a big, hot, super bright star very far away may have the same apparent magnitude as a small, cool star that's fairly close to the Earth.


What are the two factors that determine the density of materials?

The two factors that determine a material's density (such as that of wood) are its mass and volume.