a^o Mifeellanea Curioja. 



will remain the Motions in reference to the 

 hVd Stars in 20 Julian Years j <vi%. the Sun's 

 19 Revol. 1 1 S. 29 degrees, 52 minutes, 24 fe- 

 conds. Of his Apogee, 4 minutes, 20 feconds. 

 And the Moon's 267 Revol. 4 S. 13 degrees, 17 

 minutes, 2£ feconds. Of her Apogee, 2 Revol. 

 3 S. 3 degrees, 33 minutes, 35- feconds. And 

 of the Node of the Moon, 1 Revol. o S. 27 de- 

 grees, 6 minutes, 5 5* feconds. 



According to this Computation, the Trepical 

 Year is 365' Days, ? Hours, 48 Minutes, 5*7 Se- 

 conds. And the Sidereal Tear is 365 Days, 6 

 Hours, 9 Minutes, 14 Seconds. 



Thefe mean Motions of the Luminaries 

 arc affected with various Inequalities : Of 

 which, 



1. There are the Annual Equations of the 

 aforefaid mean Motions of the Sun and 

 Moon, and of the Apogee and Node of the 

 Moon. 



The Annual Equation of the mean Motion of 

 the Sun, depends on the Eccentricity of the 

 Earth's Orbit round the Sun, which is 1 6ri of 

 fiich Parts, as that the Earth's mean Diftance 

 from the Sun fhall be 1000 : Whence 'tis calPd 

 the Equation of the Centre ; and is, when greateft, 

 1 degree, $6 minutes, 20 feconds. 



The greateft Annual Equation of the Moon's 

 mean Motion, is 1 1 degrees, 49 feconds ; of 

 her Apogee, 20 minutes, and of her Node, 9 

 minutes, 30 feconds. 



And thefe four Annual Equations are al- 

 ways mutually proportional one to ano- 

 ther : Wherefore when any of them is at 

 the greateft , the other three will alfb be 

 greateft 3 and when any one lefTens, the o- 



ther 



