156 



DETLRMINA'TION of the LATITUDE 



Computation of the Apparent Times of Conjun(5lion in the 

 Spheroidal Hypothefis, at Greenwich. 



o / H 



Moon's true long, at im. 2 29 50 23 

 Eft. parallax in longitude, + 22 57 



Appt. longitude nearly, 3 13 20 

 Moon's true latitude, 20 35 



Eft. parallax in latitude, 32 5 5 



Appt. latitude nearly, 

 Horizontal parallax, 

 Reduction, 



Reduced parallax. 

 Latitude of Greenwich, 

 Redudlion, 



Reduced latitude, 

 Alt. nonagefimal. 

 Longitude nonagefimal. 

 Par. in longitude, 

 Par. in latitude. 

 Moon's true mot. in long. 

 DifF. of par. in long. 



Appt. mot. in longitude, 

 Appt. inclination. 

 Central angle at immer. 

 Arch firft, 

 Arch third, 

 Parallax in longitude. 



52 9- 

 61 11.3 

 9.8 



61 1.5 



51 28 40 



14 37 



51 14 3 

 59 3 56 

 64 14 2 

 22 56.2 



32 4.8 

 43 8.4 



9 36.9 



33 315 



3 23 8 



4 44 16 

 8 7 24 



16 40.2 

 22 56.2 



At emerfion, 



3 o 33 3^ 

 13 19 



3 



46 51 

 24 1.8 

 30 5-» 





54 7- 



61 IC.S 



9.8 



61 o.S 



Moon's true mot. in latitude, 

 Dift*. par. in latitude, 



Appt. mot. in latitude, 

 Appt. mot. in orbit, 

 At emerfion. 

 Arch fecond, 

 Arch fourth, 



61 19 24 



76 32 15 

 13 193 



30 5-5 

 3 58.3 

 I 59-3 



I 59,0 

 Si 35-0 

 43 54 

 20 46 



16 5»-3 

 13 19-3 



Sum, - '39 3^'4 Difference, 3 32.0 



Hence the interval between h» ' " Interval between the emer. 



the immer. and conj, i 3 14,8 and conjun£lion, 5 38.5 



App'. time of immer, 11 22 51.7 Appt. time of emer. 12 31 45. 



Appt, time of conj. 



12 26 6.5 



12 26 6.$ 



At 



