Question 1662Navigation General

The correct answer is B) meridian angle. The difference (measured in degrees) between the GHA of the body and the longitude of the observer is the meridian angle. The meridian angle is the angle between the observer's meridian and the vertical circle passing through the celestial body, measured westward from the observer's meridian. The other options are incorrect because: A) Right ascension is the celestial coordinate measuring the east-west position of a celestial body. C) The SHA (Sidereal Hour Angle) of the observer is the angle between the observer's meridian and the vernal equinox, measured westward. D) Zenith distance is the angular distance of a celestial body from the observer's zenith.