32 



PREDICTION OF OCCULTATIONS. 



Calculatio7i for a more accurate determination of the Time, etc., of Mnersion. 



h — d 



Sid. equiv. for J <a= J^^ 



h-d-t-if*^^ h'—d 



logcos(7(.' — d) 



logrcostp' 



logA 



logrcoscp'Acos(7t'— (?) = logw' 



log sin (7t' — d} 



logrooscp'A 



log sin jD 



logrcos(|)'Asin(/t'— (^)sinjD = logz/ 



v' 



d — «' wcosJV 



p — w 



log 



msin(7l!f— iV^ 



k 



log^-^ = 

 n 



— log i2 cos (M— JV") 



nsiniV 



logjisiniV 



logMCosiV 



log tan iV 



log sin iV 



log TO 



logm 



log cos (if— iV") 



log sin (if— iV") 



logmsin(Jl/ — iV) 



log^ 



log cos J/ 



log sin v/ 



log A; sin Jy 



log(0 



log (2) 



-4 18 29 



-o 18 57 

 -3 ^9 32 



- 97°°5 



■ 9-9253 

 9.4192 



■ 9.0450 



• 9-937° 



■ 9-3445 



■ 9-4479 



■ 8-7294 



■ -0536 



■ -1659 



- -2195 



• .1109 



• .5622 



• -4513 



■ 9-6545 



■ 9-3414 



■ °-3i3'' 



■ 9-9^19 



■ 9.7006 



• 9.2768 



■ 9-n(>-^ 



■ 9-nT^ 



■ 9.9188 



• 9-'i9S(> 

 9-4350 



• 9.7606 

 9.9124 

 9-3474 

 9.6468 



9-3233 



(From first determination) 



M 



jsr 

 M—jsr 



270° — iV" 



For Emersion 270° —iV+ 



J.= Q 



(2) + (I) 



(2) 



0) 



t 



logt 

 lograsiniV 





log t n sin iV" 





logracosiV 





logiracosiV" 





imcosiV 



(From first determination) 

 mcos if -1- tncosN = 



mcos if 

 (3) 





iMsiniV 



(From first determination) 



w sin if 



m sin if •+■< ra sin iV = 

 (40 + (3)" = ^' = 0-0741 



(From first determination) 

 (From first determination) 



(4) 



(4)^ 



(3)= 



Check 



logM' 



logiw' 



log^' 



logtv' 



iv' 



V 



V + tv' 

 tu' 



u + iu' — 



, u-htv! 

 log TT '■ 



l0g(M-t- til') 



log(« + <«') 

 log tan P 



351=58:5 

 115 56.0 

 236 2.5 

 270 0.0 

 154 4.0 



125 II. o 



279 15.0 



-t- .2105 



-<- -4434 



-+- -6539 



+ 9.8155 



-+- 9.6545 



-1- 9.4700 



— 9-34H 



— 9-1569 



— -1435 

 + .1873 



.0438 

 -4- .2951 



— .0264 

 .2687 

 .0722 

 .0019 

 .0741 



-1- 9.0450 



+ 8.8605 



+ 8.7294 



-+- 8.5449 



-t- .0351 



-+- -6177 

 + .6528 

 ,0725 

 .7607 



- 9-8377 

 -t- 9.8148 



— 0.0229 



Emersion : San Diego Mean Time = 



Emersion Angle from North Point ■■ 

 'Etmeixsvm. Angle from Vertex = Q- 



(Keduced) 



T — d 



t 



T-d-t-t 



P 



15 46.6 

 ■+- ° 39-2 



16 25.8 



-46°3o-5 

 279 15.0 



232 44-5 



