A.the departure B.the polar arc C.longitude D.Greenwich hour angle
A.is most accurate before sunrise B.is most accurate after sunset C.should only be observed when the Sun's lower limb is above the horizon D.is most accurate when the Sun's center is observed on the visible horizon
A.motion of the Earth in its orbit B.rotation of the Earth on its axis C.the body's orbital motion during the time required for its light to reach the Earth D.a false horizon
A.superior conjunction B.inferior conjunction C.opposition D.None of the above; the elongation will never be zero
A.the declination is the opposite name to the latitude B.the algebraic sum of the colatitude and declination exceeds 90 C.the observer is in high latitudes above either polar circle D.the body is circumpolar
