^ 



J 



8 



M A T H E M 



AND 



Now fuchls the peculiarity of the orbit o£ Venus and her horary motion at that time, that 

 " a";^ S!^'i-'i^^^ ■■ ■■ S. ^o'. I0",49 : S, of the angle of her vifible path with the 

 "of a'sl-; v'.'Sa : T, iC. io",49 = = S, 3°. 23'. .0" : S, of theangkof hervif.bie path= 



^"oHaftlv'ffV ihould be deemed more eligible to deduce her horary motion from the foregoing 

 „,ea[ur Jani frJ:i a comparifon of it with the horary motion of the Sun, to -f"- *^ -^f; 

 of C vtfibie path, it may be done in the following manner, and wdl be icuud to be ncaily the 



"^For let A B renrefent the horary motion of 0^-V.39^375(^cc figv 2. pi. 4O 

 E A C-:thc inclination of the orbit of $ with tlie ecliptic=-3". ^3'' ^o". 

 A r-M.r horarv motion of 9:^^'.95294^■, as it may be deduced from the liud mcafures. 

 Tha7the a^igSBC w^^ P^^th of $ with the ecliptic, undmay be found 



as follows : • ^ 



I rt 1' 10'2'^7'^^^horary m.otion {£} . , ,. ^ ■ / 



3;9?z94i-horary motion ^^-237''. ly^i^whofe Log. i. a. 375- 0716 



As 6. 3453i7--fimi of their horary motions o.8o2,4534 



Isto I 56o567-=difference of their horary motions - - - o.l93,2«25 



Soiscot.ofhalfof3^.iy-^o">o^co'^-i"*4l'. 40^' - - ' 11.5^^.9451 



ToT,of half the diff.of the angles at B&C-^83'^- 8^ a7".a=-io.9i9,774i 

 To which add half the fum of do. - - 88. 18. ao 



171. 7,6 47,2andthefupl;ofthisis8°33'.ia''.8 



==the angle of die vifible path of $ 



016 65=thc difference of the femidiameters of and $ ' 

 6ioU9=-the geo. ncareft dillancc of their centers. 



Sum, i527.T4--=^3- ^83,8789 

 Diff. 306,16=^2;. 485>9484 



ternal conta^ly. 



a"669,8273 the log. of the fcparc of half the tranik line between the In^ 



%. 



17, f 1765^:^2. 



834,9i36=thelog. of half the tranfit line between int. cent. i=!»i683' 

 375,07l6=thelog. of ^. hor. mot. 



h 



o. 459,8420--ah.88298a^;ih.5:i'.j8'',7=tlici"^'»^i^"'^^^'^^'^'^"*-^'^"^'^"'^'^' 



974/^5^ 

 610,49 



the fun-, of the femidiameters of and $ 

 :the geo. nearea diflance of their centers. 



Sum, 1585,14 3- 200,0^77 

 Biff. 364,^^^ 2. 561,29^^ 



a)5. 761,3599 

 3. 880,6799^ 



a. 375,07^6= 



:the log. of half ihe tran. line between the ext. co, 

 :the log. of $ hor. mot. 



759",766 



o. 505,6o83--3h.ao338-=3Ji. i%'- 12^168^ 



external centals. 



As R: Sec. 8". 33'- ii".5 v- (iid\A9 : gco.\'.xx\i\xdc oi ^ 



10. - - - 



10. 004,857a 



a. 785,6785 



^thc femidurution between the 



3. 79O,5357=-6I7^356-I0^ i7^336-the geo. lat. of $ 



As ']%()%() AS '• 28879,55 :: geocentric htitude : heliocentric latitude of $ 



4. 861,0949 



4, 460,5904 



a. 790>5357 

 7. 251,1261 



a. 3>o,03ia=^245",4S85— 4'- 3^4885^thG heliocentric latitude of ? 



6xc,. 



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