A Treatise on Astronomy: In which the Elements of the Science are Deduced in a Natural Order, from the Appearances of the Heavens to an Observer on the Earth; Demonstrated on Mathematical Principles, and Explained by an Application to the Various Phenomena |
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Common terms and phrases
aberration altitude aphelion apparent motion apparent semidiameter appear ascertained astronomers axis azimuth calculation centre circle co-sine co-tang comet conjunction consequently deduced degree described determined diameter difference disc diurnal motion earth ecliptic ellipsis epicycloid equal errour excentricity eye's fixed stars given greater greatest equation Greenwich heavenly bodies heavens heliocentric hence horary motion horizon horizontal parallax hour angle inclination inferiour interval jupiter known latitude longitude lunar eclipses magnitude mean anomaly mean distance mean motion mercury meridian method moon moon's nearly node noon obliquity observations opposition orbit parallax parallel passing perihelion perpendicular planet pole PROB proportion radius ratio refraction respect revolution right ascension right-angled satellites saturn shadow shew shewn sine solar star's subtracted sun's declination superiour supposed syzygies tang tangent telescope tion triangle true anomaly true place tude velocity venus whence zenith distance