1-49.The correction for parallax, whichmust be made for precise computa-tions, accounts for the1.refraction of the raysof the sun2.gravitational differentialcreated by the directionof the plumb line3.displacement of the horizonplane4.elliptical variation of thesurface of the earth1-50.The side of the astronomicaltriangle between the pole andthe star is known as the1.colatitude2.coaltitude3.parallactic4.codeclinationLearning Objective: Determine thecelestial coordinate when givenmeridian altitude observation.IN ANSWERING QUESTIONS 1-51 AND 1-52,REFER TO TABLES 15-1 AND 15-2 IN YOURTEXTBOOK.1-51.What was the GHA of the sun at zone1-521-531-54time 09^{h}22^{m}14^{s }on 16 May 1986 inlongitude 79°37’12"W?1.293°51.9´2.97°47.6´3.94°51.2´4.36°28.7´What was the declination of the sunat the time and place in question1-51?1.S 8°59.2’2.N 19°07.1’3.N 19°07.9’4.N 19°08.1’What is the polar distance,measured from the elevated northpole of the celestial body whosedeclination is 20°S?1.20°2.70°3.110°4.200°In a time diagram, the observeris located at what point?1.Over the north celestial pole2.On the celestial equator3.On the Greenwich meridian4.Over the south celestial pole1-55.The GHA of a star is measured inwhat manner?1.Counterclockwise from Greenwichto the star only2.Clockwise from Greenwich to thestar only3.The same direction fromGreenwich to the star4.The same direction from thestar to Greenwich1-56.LHA is always measured from thelocal meridian in what direction?1.Northward2.Southward3.Eastward4.Westward1-57.What method is used to obtain the1-581-59LHA when the GHA and longitude areknown?1.Always add the longitude tothe GHA2.Always subtract the longitudefrom the GHA3.Subtract an eastern longitudefrom the GHA and add a westernlongitude to the GHA4.Add an eastern longitude tothe GHA and subtract a westernlongitude from the GHAWhat is the polar distance of aheavenly body?1.The declination at that instant2.90° minus the declination3.180° minus the declination4.270° minus the declinationThe difference between the surface-plane altitude value and thecenter-of-the-earth-plane altitudevalue is what type of correction?1.Semidiameter2.Refraction3.Parallax4.Upper limbLearning Objective: Identifymethods, procedures, andcalculations required to determinelatitude and azimuth.5