A.Prime vertical circle B.Principal vertical circle C.Parallels of altitude D.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.has a declination equal to twice that of the Sun B.comprises two stars that appear close together C.is twice as bright as a single star D.suddenly becomes much brighter and then fades
A.is nearest to the Earth B.is farthest from the Earth C.is on the opposite side of the Earth from the Moon D.and Moon and Earth are in line
A.when the declination and latitude are of different names B.when the declination is greater than and the same name as the latitude C.if the vessel is stopped or making bare steerageway D.on a fast vessel on northerly or southerly headings
A.cluster B.shower C.constellation D.galaxy
A.sunset B.civil twilight C.nautical twilight D.astronomical twilight
A.be circumpolar B.have a declination equal to or greater than your latitude C.have a GHA of 180° D.have the SHA equal to or less than the LHA
A.positive correction B.dip error C.negative correction D.semidiameter error
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