144 DETERMINATION of the LATITUDE 



Determination of the Longitude of the Obfervatory at 

 Aberdeen, by the Echpfes of the Firfl and Second Sa- 

 telHtes of Jupiter. 



FIRST SATELLITE. 



Year, Month, 

 ami Day. 



2^ Jnn. 3. 1786. 

 5 Sept. 18. 



1/ Dec. 30. 



5 Jan. 31. 1787. 



2 Feb. 23. 



©Dec, 14. 1788. 

 ^ Mar. I. I 791. 

 lj Apr. 9. 



Apparent Time of Obfervatlon at 



Greenwich. 



Iranier. 

 h. ' " 



16 7 37 

 10 36 38 



8 34 55 



9 14 8 



Emer. 



h. ' " 



8 15 54 



9 45 20 

 6 15 3* 

 6 31 57 



10 4 48 



Aberdeen 

 Iinmer. 1 Emer 



h. 



15 58 57 



10 27 40 



8 27 12 



9 5 23 



" h. ■ " 

 8 7 •>9 



9 37 4.? 

 678 

 6 23 46 



9 56 49 

 Longitude, 

 Mean, 



Longitude in 

 Time, by 



Immer. 



8 40 

 8 58 



7 43 



8 45 



126 

 8 Z^S 



Emer. 



8 15 



7 37 



8 24 

 II 



7 S9 



26 



5-2 

 31-5 



SECOND SATELLITE. 



h. ' " 

 9 10 27 



J Nov. 9. 1789. ; 14 23 42 



$ Nov. 7. 1786. 

 % Mar. 8. 1787. 

 $ Dec. 21 



h. ' " 



h. ' " 



h. ' " 



7 48 3 

 5 14 30 



9 I 23 

 14 15 24 



7 4^ 14 

 5 6 27 



9 4 

 8 18 



17 22 

 Longitude, 8 41 



Mean, 

 Mean by ift Sat. 



Mean Longitude, 



7 49 



8 3 



15 5a 



7 56 



8 41 



16 37 



8 18.5 

 8 18.3 



8 X8.4 



Deter- 



