Answer to Question #202855 in Other for sanjeewa

Question #202855

Astronomers need to identify the position of objects in the sky with very high precision. For that,

it is essential to have coordinate systems that specify the position of an object at a given time.

One of them is the equatorial coordinate system that is widely used in astronomy.

(a) Explain how the equatorial coordinate system works.

(b) What is the meaning of J2000 that oen occurs together with equatorial coordinates?

The object NGC 4440 is a galaxy located in the Virgo Cluster at the following equatorial coordinates

(J2000): 12h 27m 53.6s (right ascension), 12 170 3600 (declination). The Calar Alto Observatory

is located in Spain at the geographical coordinates 37.23N and 2.55W.

(c) Is the NGC 4440 galaxy observable from the Calar Alto Observatory?


1
Expert's answer
2021-06-03T18:32:46-0400
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