What is the parallax of a star that is 12.00 light-years away in
arcseconds?
What is the parallax of a star that is 12.00 light-years away in arcseconds?
What is the parallax in arcseconds of a star that is 4.7 parsecs away? Express your answer to 2 significant figures. parallax: arcseconds The star Spica has an apparent magnitude of 1.04 and is located 80.0 parsecs away. What is Spica's absolute magnitude? Express your answer to 3 significant figures. absolute magnitude:
(a) The observed parallax of Sirius, the brightest star in the sky, is 0.375 arcseconds. How far away is it in parsecs? In light years? (b) The Hipparcos spacecraft could measure parallaxes as small as 0.001 a How distant is the furthest star for which we can measure parallax? How does this distance compare to the size of the galaxy!
The parallax of Reiltas has been measured to be 0.285 arcseconds. What is the distance to Reiltas in parsecs? in light-years? Suppose Reiltas' parallax was re-measured by the new Satellite for Parallax Accuracy Measurements (SPAM) to be 0.275 arcseconds. Is Reiltas closer or farther than previously determined? Explain your reasoning.
You measure a star to have a parallax angle of 0.14 arc-seconds. What fraction of a degree is this? Answer: /Problem 2 - Parallax to human eye 2. [3pt] By how many times would you have to magnify this effect for it to be visible to the human eye? (The limit of human vision is about 1 arc-minute) Answer: 3. [3pt] What is the distance to this star in parsecs? Answer: 4. [2pt] What is the distance to this star...
How far away is the star Spica, whose parallax is 0.013"?
The nearest star to Earth is Proxima Centauri, 4.3 light-years away. Part A At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 4.9 years, as measured by travelers on the spacecraft? b: How long does the trip take according to Earth observers? in years
Light from the star Betelgeuse takes 640 years to reach Earth. How far away is Betelgeuse in units of light-years? a. Betelgeuse is 980 light-years away. b. Betelgeuse is 640 light-years away. c. Betelgeuse is 1900 light-years away. d. Betelgeuse is 520 light-years away.
The nearest star to Earth is Proxima Centauri, 4.2 light-years away. Part A At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 3.9 years, as measured by travelers on the spacecraft? Express your answer using two significant figures. v=_____c Part B How long does the trip take according to Earth observers? Express your answer using two significant figures. t=_____ years
The nearest star to Earth is Proxima Centauri, 4.3 light-years away. At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 5.3 years, as measured by travelers on the spacecraft? Express your answer using two significant figures. C is the answers unit. How long does the trip take according to Earth observers? Express your answer using two significant figures. years is the answers unit.
Suppose you decide to travel to a star 69 light-years away at a speed that tells you the distance is only 28 light-years. Part A How many years would it take you to make the trip? Express your answer using two significant figures.