501) An azimuth angle for a body is measured from the __________. observer's meridian
502) As observed from the Earth, the angle between lines from the Earth to the Sun and the Earth to an inferior planet is known as __________. elongation
503) If the Sun's observed altitude is 47°50', the zenith distance is __________. 42°10'
504) In the navigational triangle, the angle at the elevated pole is the __________. meridian angle
505) Inferior conjunction is possible for __________. Mercury
506) Mars is only seen at two phases, one of which __________. is the full phase
507) The arc of a great circle which passes through the body and celestial poles is part of the __________. hour circle
508) The equator is __________. the primary great circle of the Earth perpendicular to the axis
509) The radius of a circle of equal altitude of a body is equal to the __________. coaltitude of the body
510) What is NOT a side of the navigational triangle used in sight reduction? Altitude
511) What is the geographic longitude of a body whose GHA is 232°27'? 127°33'E
512) Which of the following Meridian figures is correct? Approx. Pos: N30°00' W15°00'. Declination: 15°00'S. Figure 4 is correct.
513) Which of the four calculations below is correct set up, if you want to find observed latitude when the sun is on the meridian? Calculation 3 is correct.
514) What is the azimuth of the body when it is on the observer's meridian? 000 degrees/ 180 degrees
515) One parsec is equal to __________.__ 3.26 light year
516) What is the altitude of the body when it is on the observer's zenith? 090 degrees
517) The difference of latitude between the geographic position of a celestial body and your position, at the time of upper transit, is represented by ____________? zenith distance
518) The arc of the horizon measured from the true north to the vertical circle passing through the celestial body to a maximum of 360 degrees. True Azimuth
519) The arc of a great circle which passes through the body and celestial poles is part of _____? hour circle
520) The angular distance of the body north and south are ecliptic measured along a secondary to the ecliptic. Celestial latitude
521) The angular distance of the body North or South of ecliptic measured along a secondary to the ecliptic celestial latitude
522) The radius of the almucantar is equal to the co-altitude
523) The radius of the almucantar is equal to the__________. co-altitude
524) The axis from which this coordinate is measured is a semi-great circle which runs between the two poles of the earth and passes through an arbitrary point in Greenwich. This line is a secondary to the equator and is called the prime meridian. longitude
525) The azimuth of the body at the meridian transit is north or south
526) The azimuth of the body at the meridian transit is _________ north or south
527) The radius of a circle of equal altitude of the body is equal to __________.___ Zenith distance
528) The angular distance measured from vernal equinox eastward and usually expressed in units of time. right ascension
529) The angular distance measured from vernal equinox eastward and usually expressed in units of time Right Ascension
530) This axis from which this coordinate is measured is the equator, the plane of the perpendicular to the Earth's axis of rotation is referred to as. Latitude
531) The great circle that passes through the zenith and nadir vertical circle
532) The point of celestial sphere directly overhead zenith
533) The point of the celestial sphere directly overhead zenith
534) The earth's rotation causes the sun and other celestial bodies to appear to cross the sky, from_______ east to west
535) The earth's rotation causes the Sun and other celestial bodies to appear to cross the sky, from ________ east to west
536) The arc of rational horizon contained between the north point of the horizon and the vertical circle through the body measured clockwise from the north point __________.___ Azimuth or bearing
537) What is NOT a side of the navigational triangle used in sight reduction? Altitude
538) Vertical circle with passes through the east and west point of the horizon. Prime vertical circle
539) Vertical circle with passes through the east and west point of horizon prime vertical circle
540) The line joining the points of zenith and nadir__________. prime vertical circle
541) The line joining the points of zenith and nadir. Prime vertical
542) What should be indicated as the label for azimuth angle with an East meridian angle of the body for the observer in the North latitudes? N -E
543) The altitude correction that compensates the equivalent reading at the center of the earth referred to as __________._ parallax
544) The correction determined by a line drawn from the center of the earth to the center of the moon and a line drawn from the surface of the earth to the center of the moon is __________. parallax
545) The Azimuth of the Body at meridian transit is ________ North or South
546) What should be indicated as the label for azimuth angle with an east meridian angle of the body for the observer in the north latitudes N-E
547) In navigation, the Vernal Equinox is otherwise known as ____________. first point of Aries
548) This point is moving directly along the force and line at any given instant where the angle of drift is zero, otherwise known as. pivoting point
549) In celestial navigation the angle measured westward from the first point of Aries to the hour circle of the Body along the celestial equator is known as__________. sidereal hour angle
550) In working out a local apparent noon sight for your latitude, you subtract the Ho from 90°. The 90° represents the angular distance from __________. your horizon to your zenith
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