Apogee

Definition and stakes

Miscellanea Curiosa, Vol. 1

“ From the Sun's true Place, take the equated mean Motion of the Lunar Apogee, as was above shew'd, the Remainder will be the Annual Argument of the said Apogee. From whence the Eccentricity of the Moon, and the second Equation of her Apogee may be computed after the manner of the following (which takes place also in the Computation of any other intermediate Equations) . ”
Source: Gutenberg

Miscellanea Curiosa, Vol. 1

“ There is also an Equation of the Moon's mean Motion, depending on the situation of her Apogee, in respect of the Sun; which is greatest when the Moon's Apogee is in an Octant with the Sun, and is nothing at all when it is in the Quadratures or Syzygys. This Equation, when greatest, and the Sun in Perigæo, is 3 Minutes, 56 Seconds. But if the Sun be in Apogæo, it will never be above 3 Minutes, 34 Seconds. At other Distances of the Sun from the Earth, this Equation, when greatest, is reciprocally as the Cube of such Distance. ”
Source: Gutenberg

Portrait of Silvio A. Bedini Silvio A. Bedini,  The Borghesi Astronomical Clock in the Museum of History and Technology

“ Above this annual orb, the sun, in its small epicycle, gliding through the 12 signs of the anomaly, within the space of 182 terrestrial revolutions, hours 15.6.58., from left to right, falls from apogee to perigee; and, within the same time, rises from perigee to apogee, and brings with it, the index, namely its central radius, inhering to the axis of the equatorial orb and cutting the four greatest circles from the center. ”
Source: Gutenberg

Get perspective with Kwize: daily news enlightened by great literature