An Elementary Treatise on Astronomy, Volume 1

aberration altitude angle angular distance aphelion apogee apparent diameter ascertained Astronomical axis body CHAP circle co-latitude computed consequently correction deduced described difference disk Draconis Earth eccentric anomaly eccentricity eclipse effect of nutation equal equinox error evection exact Example expression fixed stars former formula greatest equation Greenwich happen heliocentric Hence horizon horizontal parallax instance interval Kepler's latitude and longitude latter longitude and latitude Lunar lunar eclipses mean anomaly mean distance mean longitude mean motion mean solar meridian method of determining Moon's orbit move Nautical Almanack nearly noon north polar distance obliquity parallax perigee period perpendicular phenomena planet point of Aries pole position preceding precession quantity radius refraction result revolution right ascension semi-diameter sidereal solar inequality solstice solstitial colure spectator star's Sun and Moon Sun's longitude supposed synodic period transit Transit of Venus true anomaly true longitude variation velocity Venus zenith distance