An inequality in the moon's march, arising from the eccentricity of the earth's orbit, whereby the diurnal motion is sometimes quicker and at other times slower than her mean motion.
See annual equation. ...
The Sailor's Word-Book
·noun A making equal; equal division; equality; equilibrium. II. Equation ·noun An expression of th...
Webster's Dictionary of the English Language
·noun Anything, especially a plant, that lasts but one year or season; an annual plant. II. Annual ...
Those astronomical motions which return or terminate every year. ...
The ship's books and papers for the year. ...
See parallax. ...
In addition to the general accounts of the year, there are three returns to be transmitted to the ad...
The change produced in the right ascension or declination of a star by the precession of the equinox...
The difference between the mean and apparent places of the equinox. ...
The difference between mean and apparent time, or the acceleration or retardation of the sun's retur...
The difference between the true and mean anomalies of a planet. ...