SECT. 1.] 



THREE COMPLETE OBSERVATIONS. 



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These places are referred to the centre of the earth, and are, therefore, to be 

 reduced by applying the parallax to the place of observation, since the places of 

 the planet cannot be freed from parallax. The right ascensions of the zenith to 

 be used in this calculation agree with the right ascensions of the planet (because 

 the observations have been made in the meridian), and the declination will be 

 throughout the altitude of the pole, 45 28 . Hence are derived the following 

 numbers : 



The observed places of Pallas are to be freed from nutation and the aberra 

 tion of the fixed stars, and afterwards to be reduced, by applying the precession, 

 to the beginning of the year 1806. On these accounts it will be necessary to 

 apply the following corrections to the observed places : 



28 



