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https://skyandtelescope.org/astronomy-resources/right-ascension-declination-celestial-coordinates/
The sky can be treated as a clock, since it wheels by as Earth rotates, so the zero point of right ascension is called "0 h" for "zero hours." Unlike longitude, right ascension is measured in just one direction — east. Because there are 24 hours in a day, each hour of right ascension measured along the equator equals 1/24th of a circle (360 ...
http://www.physics.csbsju.edu/astro/CS/CS.10.html
The zero point for right ascension is the vernal equinox. To find the right ascension of a star follow an hour circle "straight down" from the star to the celestial equator. The angle from the vernal equinox eastward to the foot of that hour circle is the star's right ascension.
https://planetfacts.org/right-ascension/
Right ascension or RA is also the celestial equivalent of a terrestrial longitude. Both of them, the right ascension and the terrestrial longitude actually measure an angle that increases towards the east when measured from a zero point on an equator. For terrestrial longitude, the zero point would be the Prime Meridian on the geographic equator.
https://www.go-astronomy.com/articles/coordinate-system.htm
For example, the constellation Orion has a Right Ascension (RA) of 4 hours, which is where the center of the constellation appears directly overhead. The constellation Cancer has a RA of 9h (9 hrs). If you wait 5 hours, Cancer will be directly overhead (9 hrs - 4 hrs). 0 hours RA is by convention the right ascention of the Sun on March 21, the ...
http://ircamera.as.arizona.edu/astr_250/Lectures/LECTURE_01.HTM
Right ascension is analogous to longitude, is usually measured in units of time: hours, minutes, seconds. The zero-point for right ascension is the Vernal Equinox (also called the Aries Point in the text), location on the celestial equator of sunrise on the first day of spring. The total range of right ascension is 24 hrs = 360 deg / 15 deg/hr.
https://estudyassistant.com/physics/question19290529
A star has right ascension of 5 hours. Which of these statements is correct about the star? A. It is five hours to the west of zero hours right ascension. B. It is five hours to the east of zero hours right ascension. C. It is five hours to the north of zero hours right ascension. D. It is five hours to the south of zero hours right ascension.
https://brainly.com/question/18503044
Answer now for branliest. i need within 5 min A star has right ascension of 5 hours. Which of these statements is correct about the star? It is 5 hours to the west of zero hours right ascension. It is 5 hours to the east of zero hours right ascension. It is 5 hours north of the celestial equator. It is 5 hours south of the celestial equator.
https://lisbdnet.com/what-is-defined-as-being-zero-degrees-altitude-2/
right ascension, in astronomy, the east–west coordinate by which the position of a celestial body is ordinarily measured; more precisely, it is the angular distance of a body’s hour circle east of the vernal equinox, measured along the celestial equator. …. The symbol for right ascension is the Greek letter α (alpha).
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