MINOR PLANETS DISCOVERED BY WATSON— LEUSCHNER. 



PERTURBATIONS. 



207 



The perturbations are: 



a u 



n&=+0?7759; log(l +v) =o log r= +0.00025; ^ = 573cos i = -0.00023 



and 



M = nz=g + ndz = 354° 9100 



As an example for the computation of a geocentric position with the aid of I/, log(l +v) =51og 

 ?-, and 5/9, the geocentric right ascension and declination of this planet, referred to the mean 

 equinox and ecliptic 1907.0, are derived for the date of the perturbations on page 215. 



