/ 



A&TRONCMTCAL 



O 



B 



ER 





( 



^ ■'- yn" 



610,49 

 6x7,356 



I az 7,^46 



3. 089,1440 



3. 925,8478 

 I. 962,9239 



*• 375,o7l6==the log. of hor. mot. of § 



9. 587,8523—011, 387126-^2^'- I3'^6536~thc tmic between the mid* 

 d!c nnd ecllp. conjunt^tion. 



From the apparent time of the middle of the tranfit, viz. 

 5^. 28^ 29^^,7 dedud 23'. I3''>65 and the apparent tune 

 of the ecliptical conjuudion will be S^'' S^ * i^'%055 when 

 the Sun's place given in the nautical almanac was 

 2\ 13^' 2y^ .iB'^Jy making the difference of our meridian 

 from Greenwich 5^. o' ^^'^^ as found above. To his place 

 in the ecliptic add his diltance from the node of Venus, 



found above, viz. 



i^\ 8^ 20", 23, 



and the fum eives the 



place of her afcending node, 2\ 14^ ^^' . 38%g. 



From the middle of the tranfit, as feen at the center of the 



earth, viz. 5\ 28' - 29^,7, apparent time, dedud the femi- 

 duration between the internal contads, viz. 2\ 52'. 58^^,7 



and there remains 2^'. ^^' . 31'', the apparent time of the 

 firft. internal contad, without parallax. This I oblerved 

 at 2^^. 31' 26" apparent time; the difference between thefe 

 is the total effed of parallax in longitude and latitude, 

 which is 4^ 5". But upon the fuppofition that the Suu^s 

 horizontal parallax, on theday of the tranfit, was 8^S52 

 the total effed of parallax fhould have 

 Therefore fay, 



04, 

 been 4' . 4'^ 



As 4'. 4''.-244' : 4'-5"==245'' : : 8^5204 : 8^555: 

 the hor. par. of the Sun on June 3d, 1 769. 



As iooooo=:hi3 mean dili from the earth : 10 1506: 



Then 



his dift. on the day of the Tranfit, 



8 



// 



K^SS 



8",6838 



gP k^ ^^ ^# ^^^ 



his horizontal parallax at his mean diftance from the earth. 

 This is nearly the fime, with what is deduced from the 

 beft of the obfcrvations made on the tranfit of 1 761 : And 

 uccording to this parallax of tlie Sun, the mean diftances 

 of the planets from the Sun will be, as they are exhibited 



m 



rf.-. 



i 



