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Is a third magnitude star 10 times brighter then a 4th magnitude star?
Wiki User
∙ 11y ago
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.
Wiki User
∙ 16y ago
Wiki User
∙ 12y agoWhen it comes to objects in the sky, lower-number magnitudes are brighter than
higher-number magnitudes.
(-3) is a lower number than zero, so an object with a magnitude of -3 is brighter
than an object of zero.
The [mean apparent visual] magnitude of the sun is -26.7. For the full moon it's -12.7,
and for the maximumn brightness of Mars it's -2.9 .
Wiki User
∙ 15y agoEach unit of change of magnitude is a factor of ten. A Magnitude Zero star is 10 times brighter than a 1st Magnitude star, and a 1st magnitude star is 10 times brighter than a 2nd magnitude star.
So a Magnitude Zero star is 1,000 times brighter than a magnitude 3 star.
Wiki User
∙ 11y agoNo. One stellar magnitude corresponds to a brightness ratio of about 2.512** .
A 3rd magnitude star is about 2.512 times as bright as a 4th magnitude star.
** Defined as the 5th root of 100.
Wiki User
∙ 13y agoThe way this is defined, a difference of 5m means the brighter star (in this case, the one with 3.0m) is exactly 100 times brighter.
Wiki User
∙ 8y agoNo. The difference in 1 magnitude is the 5th root of 100 which is about 2.512. So a 3rd magnitude star is 2.512 times as bright as a 4th magnitude star.
Wiki User
∙ 11y agoNo. A magnitude 1 star is 100 times brighter than a magnitude 6 star. A star that is one magnitude brighter than another on this scale works out to be around 2.5 times brighter.
Wiki User
∙ 12y agoOf those choices, zero is the brightest, 6 is the dimmest.
Wiki User
∙ 12y agoBrighter. Smaller numbers mean brighter stars.
Wiki User
∙ 13y ago2.154 (rounded)
(Actually the 6th root of 100.)
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How many times brighter is a magnitude 1 star than a magnitude 2 star?
Good, a nice question with a definite answer. The magnitude1 star is 2.512 times brighter (near enough).
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)
A first magnitude star is times brighter than a 5th magnitude star?
For apparent magnitudes, a magnitude of zero has the same magnitude as Vega. A first magnitude star is 40 percent as bright and a fifth magnitude star is one percent. So, a first magnitude star is 40 times as bright as a fifth.
Which star is brighter one with magnitude of 6.3 or one whit a magnitude of 14?
The lower the magnitude, the brighter it appears.
Which star is brighter a star with a magnitude of 3.2 or 4.6?
A star with an apparent visual magnitude of 3.2 appears 1.4 magnitudes brighter than another one whose apparent visual magnitude is 4.6 .
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.
How many times brighter is a first magnitude star than a third magnitude?
2 magnitudes brighter means it's about 2.512 x 2.512 times brighter. So that's about 6.31 times brighter.
What is the distance between an eighth magnitude star and a 9th magnitude star?
The 8th magnitude star is about 2.5 times brighter.
How many times brighter is a magnitude 1 star than a magnitude 2 star?
Good, a nice question with a definite answer. The magnitude1 star is 2.512 times brighter (near enough).
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)
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).
What is brighter a second or a third magnitude star?
2nd magnitude is brighter than 3rd. 6th magnitude is the dimmest that can be seen with the naked eye; many more can be seen in binoculars, telescopes etc.
A first magnitude star is times brighter than a 5th magnitude star?
For apparent magnitudes, a magnitude of zero has the same magnitude as Vega. A first magnitude star is 40 percent as bright and a fifth magnitude star is one percent. So, a first magnitude star is 40 times as bright as a fifth.
What is the magnitude of Bellatrix?
Gamma Orionis (Bellatrix) is the third brightest star in the constellation Orion.It has an apparent magnitude of 1.64 and an absolute magnitude of -2.72.This makes it the 27th brightest star in the nighttime sky.
Which star is brighter one with magnitude of 6.3 or one whit a magnitude of 14?
The lower the magnitude, the brighter it appears.
What is the difference between a twelfth magnitude and fifteenth magnitude star?
Three magnitudes, and the 12th magnitude star is the brighter star. Mathematically it means the brightness difference is about: 2.512 x 2.512 x 2.512. That's about 15.85 times brighter.
Is a third-magnitude star ten times as bright as a fourth-magnitude star?
No. The difference in 1 magnitude is the 5th root of 100 which is about 2.512. So a 3rd magnitude star is 2.512 times as bright as a 4th magnitude star.
