Question

Define one parrallactic​

Answer 1

❥︎In spherical astronomy, the parallactic angle is the angle between the great circle through a celestial object and the zenith, and the hour circle of the object. ... In the triangle zenith—object—celestial pole, the parallactic angle will be the position angle of the zenith at the celestial object.

Answer 2

Answer:

the parrallactic angle is the angle between the great circle through a celestial object and the zenith