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The two factors that determine the brightness of a star are:

  1. Luminosity - How much energy it releases in a given time.
  2. Distance - How far the star is from the observer.
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โˆ™ 2011-05-31 07:35:07
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Q: What two factors determine the APPARENT brightness of a Star?
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Related questions

What factors determine the brightness of a star?

-- Its real (intrinsic) brightness depends on its size and temperature. -- Its apparent brightness to us depends on its intrinsic brightness and its distance from us.


What two factors affect a star's 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


What are three factors that control the apparent brightness of a star?

A star's apparent brightness is measured by its distance from Earth, the star's apparent magnitude, and how much the star's light is altered as it passes through the Earth's atmosphere.


What is an apparent brightness?

An apparent brightness is the brightness of a star as measured by an observer.


To determine a stars absolute brightness an astronomer must know a star's?

distance from the observer and apparent brightness.


Factors that control the apparent brightness of a star as seen from earth?

The 3 factors that affect a star's brightness as viewed from earth, are: The star's age, distance from earth, and actual magnitude (scale a star's brightness is measured in).


Do scientists use size the of the star to determine the stars brightness?

No. To determine a star's real brightness, its apparent brightness must be measured. Also, the star's distance must be determined through one of several methods.


3 factors that control the apparent brightness of a star when viewed from earth?

The 3 factors that affect a star's brightness as viewed from earth, are: The star's age, distance from earth, and actual magnitude (scale a star's brightness is measured in).


What two factors affect a star 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


What must be measured to determine distance by the Cepheid variable star method?

The apparent brightness. Also, the period of the star, which is related to its real brightness.


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


What are the factors that contribute to the brightness or a star?

Here are some factors that contribute to the brightness of a star: ~ Apparent magnitude ~ Distance from Earth ~ Size ~ Surface temperature I hope this helps!!

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