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Merak is a star, not a constellation.
Merak and Dubhe are the two "pointer" stars at the lip of the Big Dipper, that point to Polaris in the northern sky. Merak is an "A1" spectral class "white" star, about 3 times more massive than the Sun, and correspondingly hotter.
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How far is merak the star from earth?
78 light years
What is it called when a star suddenly increases in brightness?
A nova is a star that suddenly increases in brightness.
List three factors that control the apparent brightness of a star as seen from earth?
Three factors that affect a star's brightness are the star's distance from earth, its age and its luminosity. The farther the star is from earth, the less bright it appears. As a star increases in age, its brightness also increases. Its brightness also depends on its luminosity, which is the amount of energy the star emits per second.
Which factor does not affect the apparent brightness of a star?
How old a star is.
Which star has the greatest brightness?
Sirius.
Temperature and radius of merak star?
the distances of the merak star
What color star is Merak?
Merak is a greenish white star
What type of star merak?
it is a white main sequence star
What type of star is Merak?
it is a white main sequence star
What are the name of the pointer star?
Merak and Dubhe
How far is merak the star from earth?
78 light years
What does the absolute brightness of the star depend on?
the brightness of a star
What is the measure of the star's brightness?
The measure of a star's brightness is its magnitude. A star's brightness as it appears from Earth is called its Apparent Magnitude.Star's brightness is measured by there magnitude.
What measures the brightness of the star?
photographs use to measure the brightness of a star
A star's brightness is the brightness seen by humans on Earth. A star's brightness is its actual brightness and does not depend on where the star is viewed from.?
The brightness as seen from Earth is called the "apparent magnitude".The real brightness (defined as the apparent brightness, as seen from a standard distance) is called the "absolute magnitude".
Where is merak located exactly?
Merak is a star located at the zodiac sign "grand bear". You can only see it by night on the nothern hemisphere. It is visible the whole year with eyes only.
What is difference between apparent brightness and absolute brightness?
Absolute Brightness: How bright a star appears at a certain distance. Apparent Brightness: The brightness of a star as seen from Earth.
