Concerning a celestial observation,the azimuth angle is measured from the principal vertical circle to the().
A celestial body’s complete orbit around another body is().
A celestial body’s complete orbit around another body is().
The error in the measurement of the altitude of a celestial body,caused by refraction,increases as the().
A celestial body will cross the prime vertical circle when the latitude is numerically ().
A celestial body will cross the prime vertical circle when the latitude is numerically().
A time diagram is a diagram of the celestial sphere as observed from above the().
A celestial body will cross the prime vertical circle when the latitude is numerically().
A line of position from a celestial observation is a segment of a ().