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A star who's brightness changes is called a variable star.
Examples are:
- Algol
- Polaris
- Betelgeuse.
See related link for more information.
Wiki User
∙ 13y ago
Wiki User
∙ 8y agoA variable star is one whose brightness changes.
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What is an apparent brightness?
An apparent brightness is the brightness of a star as measured by an observer.
WHAT IS THE BRIGHTNESS OF A STAR KNOWN AS?
Its magnitude.
What is a stars brightness as if it were a standard distance?
Theres `Absolute Magnitude` which is the brightness of a star at a set distance. Then there is `Apparent Magnitude` which is the apparent brightness from earth, regardless of distance.
What does measurement of the brightness of a star call?
Brightness of stars (apparent and absolute magnitude) is measured by convention, taking an another star as a standard.
What part of a star is called magnitude?
The magnitude of a star refers to its brightness.
How do you describe a variable star?
A variable star is a star whose brightness as seen from Earth that fluctuates.
Which changes would changes would correspond to a decrease in a star's absolute brightness?
A decrease in the star's temperature
How do you describe a variable?
A variable star is a star whose brightness as seen from Earth that fluctuates.
How do you describe variable stars?
A variable star is a star whose brightness as seen from Earth that fluctuates.
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".
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.
What space words start with the letter v?
Well, I got a couple that I can think of off the top of my head Venus - Planet Virgo - Constellation Variable Star - A star whose brightness changes periodically Van Allen Belts - Radiation/Groups of charged particles that surround the Earth
What is the purpose of a star's brightness?
There is no purpose of a star's brightness. They just exist and shine.
How are the brightness and temperature related?
brightness and temperature are both related because brightness is actually tempature. However the system has become more refined. Instead of just looking at the star and determining magnitude one or magnitude two, an astronomer measures the brightness of the star using a device called a photometer. The photometer counts the number of photons coming from the star. This photon count is then compared to the photon count from a star whose magnitude is known. An accurate magnitude can then be calculated.
