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Will a very bright star on the HR diagram most likely have positive or negative magnitude?
Wiki User
∙ 6y ago
Positive - most of them are far away.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoIt will be negative.
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Will a bright star have a negative number for its magnitude?
Magnitude is the degree of brightness of a star. In 1856, British astronomer Norman Pogson proposed a quantitative scale of stellar magnitudes, which was adopted by the astronomical community. Pogson's proposal was that one increment in magnitude be the fifth root of 100. This means that each increment in magnitude corresponds to an increase in the amount of energy by 2.512, approximately.A fifth magnitude star is 2.512 times as bright as a sixth, and a fourth magnitude star is 6.310 times as bright as a sixth, and so on. The naked eye, upon optimum conditions, can see down to around the sixth magnitude, that is, +6. Under Pogson's system. Very bright objects have negative magnitudes. For example, Sirius, the brightest star of the has an apparent magnitude of −1.4 and the full Moon has an apparent magnitude of −12.6 and the Sun has an apparent magnitude of −26.73.
Bright is a positive or negative?
If you are talking about stars then the lower the number the brighter it is.If you are talking about the luminosity then it is a positive number.
How bright is Arcturus?
Arcturus has an absolute magnitude of -0.29 and an apparent magnitude of -0.04
How bright is Gomeisa?
Apparent magnitude: +2.9Absolute magnitude: -0.7See related question.
What are the relationships between apparent magnitude and absolute magnitude?
Apparent magnitude is the brightness of an object as seen from Earth without any atmosphere.Absolute magnitude is the brightness of an object as seen from a predetermined distance, depending on the object.For planets, the distance used is 1 AU (Astronomical Units). Stars and galaxies use 10 parsecs which is about 32.616 light years.The dimmer an object is the higher the positive value. The brighter an object is the higher the negative value.Examples:The Sun has an apparent magnitude of -26.74 but an absolute magnitude of 4.83Sirius has an apparent magnitude of -1.46 but an absolute magnitude of -1.42This means that from Earth, the Sun is a lot brighter, but if the Sun was replaced by Sirius, Sirius would be 25 times more luminous.See related links for more information
What are the brightness of stars?
magnitude, dim stars have positive magnitudes and bright stars have negative magnitudes
Will a bright star have a negative number for its magnitude?
Magnitude is the degree of brightness of a star. In 1856, British astronomer Norman Pogson proposed a quantitative scale of stellar magnitudes, which was adopted by the astronomical community. Pogson's proposal was that one increment in magnitude be the fifth root of 100. This means that each increment in magnitude corresponds to an increase in the amount of energy by 2.512, approximately.A fifth magnitude star is 2.512 times as bright as a sixth, and a fourth magnitude star is 6.310 times as bright as a sixth, and so on. The naked eye, upon optimum conditions, can see down to around the sixth magnitude, that is, +6. Under Pogson's system. Very bright objects have negative magnitudes. For example, Sirius, the brightest star of the has an apparent magnitude of −1.4 and the full Moon has an apparent magnitude of −12.6 and the Sun has an apparent magnitude of −26.73.
Bright is a positive or negative?
If you are talking about stars then the lower the number the brighter it is.If you are talking about the luminosity then it is a positive number.
Is the brightness of a star compared to other stars called its magnitude.?
No; the "magnitude" is how bright the star is. It can either mean:* The apparent magnitude = how bright it seems to us, * The absolute magnitude = how bright the star really is (i.e., how bright it would seem at a standard distance).
How does the apparent-magnituede of a star differ from it absolute magnitude?
Absolute magnitude is how bright a star is. Apparent magnitude is how bright it looks to us (on Earth).
Which stars always have large positive absolute magnitude?
Does it mean that the star is a main sequesnce star? ( . Y . ) The above isn't true. A star can be a blue supergiant and be on the main sequence but still not be even visible to us, therefore the apparent and absolute magnitude wouldn't be the same. But to answer your question, I don't think it has a name, it just means that you are seeing the star's absolute and apparent magnitude at the same time, so if you placed the star at 32.6 light years away(the absolute magnitude scale)then the star would not appear to change in brightness
What star is called its magnitude?
The magnitude of a star means how bright it is.
What is a bright star?
Magnitude
Is magnitude and and apprent magnitude the same thing?
apparent magnitude is how bright a stars seems from earth. magnitude (i think called actual magnitude [I cant remember]) is how bright a star ACTUALLY is.Have a nice day.
What is a synonym for absolute magnitude and apparent magnitude?
Apparent magnitude: How bright something looks to us. Absolute magnitude: How bright something really is - expressed as the apparent magnitude it would have at a standard distance.
What is the apparent magnitude of the star Deneb?
The apparent magnitude of Deneb is +1.25, a fairly bright bright star from Earth.
What the relationship between magnitude and size of the star?
The brightness of a star depends on its temperature, size and distance from the earth. The measure of a star's brightness is called its magnitude. Bright stars are first magnitude stars. Second magnitude stars are dimmer. The larger the magnitude number, the dimmer is the star.The magnitude of stars may be apparent or absolute.
