The Elements of Astronomy: Designed for the Use of Students in the University

aberration angle aphelion apogee apparent place appear Astronomers atmosphere axis called Cassini catalogue circle clock comet computed conjunction consequently dark declination describe determined diameter difference discovered diurnal motion earth eclipse elongation emersion equal equator equinox excentricity fixed stars Flamstead gives greater greatest Halley happen heavenly bodies heavens hence Herschel horary motion horizon horizontal parallax hour angle inclination inferior conjunction interval Jupiter latitude libration light lunar lunar eclipse magnitude Mars mean anomaly mean distance mean motion Mercury meridian altitude moon moon's orbit nearly node observed opposition parallax parallel passes the meridian perihelion perpendicular phænomena Phil planet pole proper motion radius refraction revolve right ascension ring rotation satellite Saturn seen semidiameter shadow sidereal sine solar spectator spots sun comes sun's supposed surface telescope tion Trans transit triangle Trig true anomaly true longitude true place tude umbra Venus visible