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How much brighter does a first magnitude star appear than a 6 magnitude star?
Wiki User
∙ 12y ago
Each difference of 1m corresponds to a factor of about 2.512 (to be precise, 100.4, or the fifth root of 100 - the scale is chosen in such a way that a difference of 5m corresponds to a factor of 100). Therefore, since in this example there is a difference of 3m, you calculate 2.512 to the power 3.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoIf one star is 6.3 times brighter than another star, it's (roughly) two magnitudes
brighter.
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Answer #2:
"1 magnitude brighter" means (the 6th root of 100) times brighter.
(the 6th root of 100)X = 6.3
X log(the 6th root of 100) = log(6.3)
x = log(6.3)/log(the 6th root of 100) = 2.398 magnitudes (rounded)
Wiki User
∙ 14y ago1 is brighter than 6. Magnitude 6 is about the limit for the human eye; weaker objects, that can only be seen in telescopes, have numbers higher than 6. The brightest stars and planets have negative magnitude numbers.
Wiki User
∙ 14y agoA magnitude 1 star is 100 times brighter than a magnitude 6 star.
A magnitude 1 star is 100 times brighter than a magnitude 6 star.
A magnitude 1 star is 100 times brighter than a magnitude 6 star.
A magnitude 1 star is 100 times brighter than a magnitude 6 star.
Wiki User
∙ 14y agoThe scale is logarithmic; a difference of 5 magnitudes correspond to a factor of 100. Therefore, if the difference in magnitude is 3, the brightness ratio would be 103 x 0.4 = 101.2, or about 15.8.
The scale is logarithmic; a difference of 5 magnitudes correspond to a factor of 100. Therefore, if the difference in magnitude is 3, the brightness ratio would be 103 x 0.4 = 101.2, or about 15.8.
The scale is logarithmic; a difference of 5 magnitudes correspond to a factor of 100. Therefore, if the difference in magnitude is 3, the brightness ratio would be 103 x 0.4 = 101.2, or about 15.8.
The scale is logarithmic; a difference of 5 magnitudes correspond to a factor of 100. Therefore, if the difference in magnitude is 3, the brightness ratio would be 103 x 0.4 = 101.2, or about 15.8.
Wiki User
∙ 12y agoThe difference is 10 magnitudes.
6 magnitudes is defined as a brightness ratio of 100.
1 magnitude is the 6th root of 100.
10 magnitudes = (6th root of 100)10 = (100)5/3 = (10)10/3 = 2,154 times as bright (rounded)
Wiki User
∙ 13y agoThe lower the number, the brighter the star, so a "first magnitude star" is quite bright, while a "sixth magnitude star" is barely visible even in a DARK sky - and not visible at all from the average suburb or city.
Wiki User
∙ 14y agoThe scale is logarithmic; a difference of 5 magnitudes correspond to a factor of 100. Therefore, if the difference in magnitude is 3, the brightness ratio would be 103 x 0.4 = 101.2, or about 15.8.
Wiki User
∙ 11y ago46.4 times (rounded)
Edit: No, this is the easy one. It's 100 exactly. ("Even Homer nods".)
Wiki User
∙ 10y agoSince that is 2 magnitudes difference, the factor is 2.512. 2.512 x 2.512 = 6.3
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Which magnitude would be associated with the brighter star?
The greater a star's magnitude, the brighter it appears in the sky. Magnitude is a scale of apparent brightness as seen from Earth and says nothing about how large a star actually is or how much energy it is radiating. A small star that is closer may have a greater magnitude, as seen from Earth, than a large, active star that is much further away.
What is the actual amount of light a star gives off?
It is actually absolute magnitude, opposed to apparent magnitude which is how much light stars appear to give off.
Would the apparent magnitude of the sun increase or decrease if it were farther away from Earth?
The numeric value of the apparent magnitude would increase, since bright objects have lower magnitude values than dim objects.To give some actual numbers as an example: the Sun has an apparent magnitude of about -27. It is much, much brighter than the moon, which at its brightest has an apparent magnitude of -13 or so.
What things must an astronomer measure to calculate a star's absolute brightness?
Telescopes, combined with spectroscopy are used for the colors. The apparent brightness can be measured using a telescope with a special "CCD camera". To measure the "real" brightness ("absolute magnitude") you also need to be able to work out the distance to the star.
Is apparent magnitude an indicator of a star's temperature?
The apparent magnitude of a star is a measure of its brightness as seen from Earth, the lower the number, the brighter a star is. Ex. a star that has an apparent magnitude of -20 is WAY brighter from Earth than a star with a apparent magnitude of 20.
Star A is a first magnitude star. Star B is a sixth magnitude star. Which star is brighter and by how much?
A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.A magnitude 1 star is 100 times brighter than a magnitude 6 star.
Why do some stars appear bigger and brighter than others?
A stars brightness depends on two factors; its distance from us and its actual brightness (absolute magnitude). The actual brightness of a star depends on various factors, such as its mass, its temperature and its age.Consider two stars of the same actual brightness (absolute magnitude) - if one of them is much closer, then is will be brighter than the further one. It will appear brighter, even though it would be the same side by side - it can be said to be apparently brighter (higher apparent magnitude) due to its distance.A:They appear bigger and brighter because they really are bigger and brighter, but even if they are not bigger and brighter it could be because they are closer.
Why some stars appear bigger and brighter than others?
A stars brightness depends on two factors; its distance from us and its actual brightness (absolute magnitude). The actual brightness of a star depends on various factors, such as its mass, its temperature and its age.Consider two stars of the same actual brightness (absolute magnitude) - if one of them is much closer, then is will be brighter than the further one. It will appear brighter, even though it would be the same side by side - it can be said to be apparently brighter (higher apparent magnitude) due to its distance.A:They appear bigger and brighter because they really are bigger and brighter, but even if they are not bigger and brighter it could be because they are closer.
Is Mizar brighter than the Sun?
Yes, in "absolute magnitude", Mizar is much brighter than the Sun.
How much brighter is a star with an apparent visual magnitude of 13.4 than a star with an apparent visual magnitude of 15.4?
13.4 -15.4=2 so 2 % brighter
How would you calculate how much brighter a magnitude plus 4 star is than a magnitude plus 7 star?
The model for measuring the apparent magnitude (brightness from earth) of a star says that a magnitude 1 star will be 100 times brighter than a magnitude 6 star (just visible with the naked eye). This means that a magnitude 1 star is 2.512 times brighter than a magnitude 2 star, which is 2.512 times brighter than a magnitude 3 star. To jump two places up the scale, use 2.512 x 2.512 as a multiplier, i.e. mag 1 is 6.31 times brighter than magnitude 3 star. To jump three places use 2.512 x 2.512 x 2.512 (or 2.512 cubed) = 15.851. So a magnitude 4 star will be 15.85 times brighter than a magnitude 7 star. Working the other way, a magnitude 7 star will appear 6.3% as bright as a magnitude 4 star (1/15.85 and x 100 to get percentage).
Is a third magnitude star 10 times brighter then a 4th magnitude star?
Absolutely. When speaking of the brightness you see from earth, you are speaking of apparent magnitude. When considering the type of star, it's composition, stage, age, size, distance, etc., a star is also assigned an absolute magnitude, so the ranking of the star if seen from similar distances reveals the truth about a star. 3.26 light years away is the assumed distance in ranking stars. A star many times farther away than a second star may appear much brighter than the second star which is much closer, based partially on the various factors mentioned above. The lower the value for a magnitude, the brighter, or more correctly, the more luminous, a star. Thus, a 3.4 is brighter than a 5.1, for example. Long ago the scale was originally an arbitrary ranking based on certain stars that were considered to be the brightest. Since then, stars even brighter have been identified, thus the need to use values even less than zero. Only a handful of stars fall below zero in apparent magnitude. So then it is not significant where in the sky (in what constellation) a star lies, the magnitude value determines the brightness.
A star might be much brighter than it appears to be This is called the star's absolute magnitude The difference in apparent magnitude and absolute magnitude is due primarily to the star's?
Distance
A star might be much brighter than it appears to be. This is called the star's absolute magnitude. The difference in apparent magnitude and absolute magnitude is due primarily to the star's -?
Distance
If star A is third magnitude and star B is fifth magnitude which is brighter and by what factor?
A 3rd magnitude star is brighter than a 5th magnitude star by a factor of 6.25.Each integer difference of magnitude represents a change in apparent brightness of 2.5 times. Hence, a 3rd magnitude star is 2.5 x 2.5 = 6.25 times brighter than a 5th magnitude star.(check related links)
Which magnitude would be associated with the brighter star?
The greater a star's magnitude, the brighter it appears in the sky. Magnitude is a scale of apparent brightness as seen from Earth and says nothing about how large a star actually is or how much energy it is radiating. A small star that is closer may have a greater magnitude, as seen from Earth, than a large, active star that is much further away.
What is the actual amount of light a star gives off?
It is actually absolute magnitude, opposed to apparent magnitude which is how much light stars appear to give off.
