0
If star A is third magnitude and star B is fifth magnitude which is brighter and by what factor?
Wiki User
∙ 14y ago
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)
Wiki User
∙ 14y ago
Wiki User
∙ 12y 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 formally as the 5th root of 100.
Earthquake magnitudes are also scaled 'logarithmically', but in the case of the 'Richter scale'
of earthquake intensity, one earthquake magnitude is a factor of 10. So a magnitude 6
earthquake releases ten times as much energy as a magnitude 5 earthquake does. (And
higher numbers indicate higher earthquake energy, whereas lower star magnitudes
indicate brighter stars.)
Wiki User
∙ 14y agoThe magnitude is different from what a star's magnitude is. First-magnitude stars are those with a magnitude less than 1.5; second-magnitude is the group between 1.5 and 2.5; third-magnitude would assumably be anything either greater than 2.5 or between 2.5 and another set value. Thus the minimum difference is of 1 degree of magnitude, which makes it around 2.5 times brighter, and can range above this.
A star of magnitude 1 would be two degrees brighter than a star of magnitude 3, so would be ~2.5 x 2.5 = 6.25 times brighter.
Another explanation. Previous answer by Nij. This answer from Peggy. Using the definition that classifies magnitude 1 as being 100 times brighter that magnitude 6. The difference between magnitudes in this system is 2.512 per magnitude. A difference of two magnitudes is 2.512 X 2.512 = 6.31. A 1st magnitude star is 6.31 times brighter than a 3rd magnitude star.
Wiki User
∙ 14y ago100 times brighter is defined as a difference of 6 magnitudes.
10,000 = (100 x 100) = 12 magnitudes brighter.
12 magnitudes brighter than (+7.2) is (- 4.8) .
Add your answer:
Earn +20 pts
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.
Are the brightest stars low or high magnitude?
The brightest stars have lower magnitude numbers. So a "First magnitude star" is one of the brightest stars there are. Some things are even brighter; the planet Venus is sometimes the third brightest thing in the sky (after the Sun and the Moon). The magnitude of Venus can be as bright as -1. Higher numbers are for dimmer stars. About the dimmest star you could see would be a seventh-magnitude star, but only if the sky were VERY dark.
Who is the second third fourth fifth person went to space?
No
05. What two parameters does the brightness of a star depend on?
The brightness of a star - or apparent magnitude [See related question] is how bright a star is as viewed from Earth. Therefore, if we have two stars of similar luminosity but one is twice as far away, then the further star would appear dimmer than the closer star. There are more luminous stars than our Sun but because the Sun is a lot closer, it is brighter. So the brightness of a star depends on it's luminosity and it's distance from the observer. A stars luminosity is a factor of how hot it is, and how big it is.
Is Jupiter the first second third fourth fifth six or seventh planet from the sun?
sixth
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 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.
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.
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.
What is the greatest common factor of 18x the the third power and 30x to the fifth power?
6x3
Is Fifth Third Bank the same as Fifth Third Auto Finance?
Fifth Third Auto Finance is a subsidiary of Fifth Third Bank Corp.
How far did jls get in the x-factor?
Jls came second in the x factor Eoghain Quigg third and Alexandra Burke first in the fifth series
Why is fifth third bank called fifth third?
It was a result of the merger of the Fifth National Band and the Third National Bank
Why is fifth third bank called fifth third bank?
It was a result of the merger of the Fifth National Band and the Third National Bank
What is a first magnitude star called?
The term magnitude is used to define the apparent brightness of an object from Earth. The scale has its origins in the Hellenistic practice of dividing stars, visible to the naked eye into six magnitudes.The brightest stars were said to be of first magnitudewhile the faintest were of sixth magnitude by visual perception.Each magnitude was considered to be twice the brightness of the following grade (a logarithmic scale).Nowadays there are more than six magnitudes and the use of negative values were introduced. So our Sun have an apparent magnitude of -26.73 whilst Uranus is 5.5See related for for information
Are the brightest stars low or high magnitude?
The brightest stars have lower magnitude numbers. So a "First magnitude star" is one of the brightest stars there are. Some things are even brighter; the planet Venus is sometimes the third brightest thing in the sky (after the Sun and the Moon). The magnitude of Venus can be as bright as -1. Higher numbers are for dimmer stars. About the dimmest star you could see would be a seventh-magnitude star, but only if the sky were VERY dark.
When was Fifth Third Ballpark created?
Fifth Third Ballpark was created in 1994.
