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Does the star Sirius or Betelgeuse have a greater parallax angle?
Wiki User
∙ 13y ago
Sirius will have a greater angle, because it is closer to us.
Wiki User
∙ 13y ago
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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.
The star Sirius is known to be 8.6 light years away What is the parallax angle?
The parallax is 379.21 mas (Minute of arc) [See related link] or 2.64 parsecs [See related link]
If a star's parallax angle is too small to measure what can you conclude about the star's distance from earth?
It means that the distance is greater than a certain amount - depending on how precisely you can measure the parallax.
If a star's parallax angle is too small to measure what can you conclude about the star's distance from the earth?
It means that the distance is greater than a certain amount - depending on how precisely you can measure the parallax.
Why can't the parallax effect be used to measure distances to other galaxies?
The parallax angle of such distant objects is way too small to be measured. In general, the farther away an object, the smaller is its parallax angle.
What is the parallax angle of rigel?
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Parallax would be easier to measure if?
Parallax would be easier to measure if the Earth were farther from the sun. This way, there will be a wider angle to the stars using the parallax method.
Why is the uncertainty in astronomers' knowledge of a star's distance greater for stars that are farther from earth?
I believe that it is all to do with margin of error. The further away the planet, the greater the margin of error in the observations and therefore the greater the uncertainty in their distance from Earth.
Is the larger a parallax shift the closer an object is?
Yes, that's the way it works. A parallax angle of 1" (arc-second) means that the object is at a distance of 1 parsec (that's how the parsec is defined); at a parallax angle of 1/10 of an arc-second, the object would be at a distance of 10 parsec, etc. A parsec is approximately 3.26 light-years.
If a star's parallax angle is too small to measure what can you conclude about the stars distance from earth?
You can conclude that it is farther than a certain distance. How much this distance is depends, of course, on how accurately the parallax angle can be measured.
Most stars have such small parallax shifts that accurate measurement is always possible?
On the contrary, if the parallax angle is too small, it can't be measured accurately.
Why would astronomers measure the parallax angle of a planet or star?
It's distance
