e = 

 /I = 



32 

 Whence, for Elliptic Elements II, 



o / ,; 



rt = 47 12 6.50) . ^T 1 -iQAn 



„ ^»„ 4. on oi ( mean equinox or Jan. 1, 1847. 



i = 1 46 58.97 



0.00871946 



21".5544S 



328° 32' 44".20 mean noon, Jan. 1, 1S47. 

 T = 164 .6181 tropical years. 



No. 42. I subjoin the corrections of this Ephemeris as indicated by the 

 eight day groups of meridian observations, viz., for the date and for the preceding 

 three and following four days. In forming these normal corrections, I have 

 rejected all results which differed 6" or more from the mean, believing that their 

 use would diminish rather than increase the precision of the final result. Equal 

 weights have been given to those which were retained. In this list no observa- 

 tion is used twice. 



FOURTH GEOCENTRIC NORMAL PLACES. EIGHT DAY GROUPS. 

 CORRECTION OF THE PRECEDING EPHEMERIS, FROM MERIDIAN OBSERVATIONS ONLY. 



Date 



, mean lime. 



Obs.- 



-Eph. 



No. 



Obs.- 



-Epii. 



No. 



Greenwich. 



A 



A 



Obs. 

 9 





D 



0"..55 



Obs. 



1846, 



Sept. 



26". 5 







0".17 



^9 



(.i 



Oct. 



4.5 



— 



.67 



23 



— 



.03 



20 



ii 



a 



12.5 







.14 



39 



+ 



.31 



33 



<( 



a 



20.5 



— 



.18 



23 



+ 



.54 



20 



a 



a 



28.5 



+ 



.72 



23 



+ 



1.10 



17 



iC 



Nov. 



5.5 



+ 



.75 



43 



+ 



.98 



35 



iC 



a 



13.5 



+ 



.08 



46 



+ 



.41 



37 



iC 



" 



21.5 



+ 



.26 



21 



+ 



.72 



18 



ii 



li 



29.5 





.16 



24 



+ 



.86 



20 



i( 



Dec. 



7.5 







.59 



13 



+ 



.77 



12 



1847, 



, July 



27.5 



— 



.09 



9 



+ 



.33 



8 



(( 



Aug. 



4.5 



— 



.22 



6 



— 



.48 



7 



a 



li 



12.5 



— 



.85 



16 



+ 



.35 



14 



a 



a 



20.5 



— 



1.27 



11 



— 



.13 



13 



li 



ii 



28.5 



— 



.93 



8 



+ 



.13 



8 



a 



Sept. 



5.5 



— 



.99 



10 



+ 



.83 



9 



a 



a 



13.5 



— 



.82 



8 



+ 



.83 



7 



a 



(( 



21.5 



+ 



.12 



9 



+ 



.05 



8 



a 



a 



29.5 



— 



1.29 



7 



+ 



.15 



5 



a 



Oct. 



7.5 



— 



1.03 



4 



+ 



1.98 



4 



a 



ii 



15.5 



— 



0.80 



10 



+ 



.55 



10 



a 



ii 



23.5 



— 



.95 



10 



— 



.16 



6 



a 



a 



31.5 



+ 



1.67 



8 



+ 



.71 



8 



a 



Nov. 



8.5 



+ 



.74 



6 



+ 



1.51 



9 



a 



ii 



16.5 



+ 



1.61 



6 



+ 



1.08 



4 



a 



tf 



24.5 





1.23 



9 



+ 



.53 



7 



a 



Dec. 



2.5 



+ 



.36 



3 



+ 



1.60 



2 



(C 



a 



10.5 



— 



.78 



4 



+ 



.67 



3 



K 



ii 



18.5 



+ 



0.98 



3 



— 



.05 



3 



