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Two stars having annual parallax of 0.1 and 0.02 arc seconds respectively.If they appear to have same magnitude. estimate the actual distance of these stars from us?
Wiki User
∙ 11y ago
The 'parsec' (3.26 light years) is the distance at which an object exhibits an annual
parallax of 1 arcsecond. Although the whole idea is based in the trigonometric tangent
of angles, we can assume a perfectly linear relationship for such small angles.
-- 0.1 arcsecond ==> 3.26/0.1 = 32.6 light years
-- 0.02 arcsecond ==> 3.26/0.02 = 163 light years
Their magnitude has nothing to do with the question you asked. It may be
relevant to the second part of the question from which you copied only the
first part. Thanks for including all of the given data, though.
Wiki User
∙ 11y ago
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Distance to nearby stars can be determined from?
stellar parallax
The parallax of a star is observed because?
Parallax helps because the bigger the parallax is the closer the star is. Knowing the distance helps to determine the "absolute magnitude" of a star, not just how bright it appears.
What can parallax calculate?
Distance (to an object).
If a star has a parallax of 0.20 arc seconds what is the distance to that star?
I assume you mean the parallax. If the parallax is 0.1 arc-seconds, then the distance is 1 / 0.1 = 10 parsecs.I assume you mean the parallax. If the parallax is 0.1 arc-seconds, then the distance is 1 / 0.1 = 10 parsecs.I assume you mean the parallax. If the parallax is 0.1 arc-seconds, then the distance is 1 / 0.1 = 10 parsecs.I assume you mean the parallax. If the parallax is 0.1 arc-seconds, then the distance is 1 / 0.1 = 10 parsecs.
The distance to nearby stars can be measured by using?
Parallax
What measures star distance from the Earth?
Stellar Parallax Astronomers estimate the distance of nearby objects in space by using a method called stellar parallax, or trigonometric parallax. Simply put, they measure a star's apparent movement against the background of more distant stars as Earth revolves around the sun.
What is the most reliable method that astronomers use to estimate the distance to a galaxy?
The Parallax Method. See the link for more info.
How does parallax shift varies with distance?
The closer the star, the greater the parallax angle, which is why you can't measure the distance to very distant stars using the parallax method.
Distance to nearby stars can be determined from?
stellar parallax
What is the effect of distance from an object on parallax angles?
The parallax should get smaller and harder to notice although in astronomy there are techniques used to find the parallax of stars by using the Earth's position around the sun to find the distance of the stars.
The parallax of a star is observed because?
Parallax helps because the bigger the parallax is the closer the star is. Knowing the distance helps to determine the "absolute magnitude" of a star, not just how bright it appears.
What ca parallax calculate?
Distance.
What can parallax calculate?
Distance (to an object).
Why was Galileo so interested in parallax?
He was on to a brilliant idea about how parallax can be used to estimate some astronomical distances.
How is a parallax used in astronomy?
for determining distance
If a star has a parallax of 0.20 arc seconds what is the distance to that star?
I assume you mean the parallax. If the parallax is 0.1 arc-seconds, then the distance is 1 / 0.1 = 10 parsecs.I assume you mean the parallax. If the parallax is 0.1 arc-seconds, then the distance is 1 / 0.1 = 10 parsecs.I assume you mean the parallax. If the parallax is 0.1 arc-seconds, then the distance is 1 / 0.1 = 10 parsecs.I assume you mean the parallax. If the parallax is 0.1 arc-seconds, then the distance is 1 / 0.1 = 10 parsecs.
If you determinee that a certain star displayed a large parallax what couls you say about its distance?
If a certain star displayed a large parallax, i would say its distance is not wide.
