35(5 



ASTRONOMICAL OBSERVATIONS 



Passage of Mercury over the disk of the Sun, Novr. 1 2th, 1782. 



contact 



Philadelphia. 



Paris. 



Greenwich. • 



Cambridge in New 

 England. 



9 34 5(U 

 9 40 (W 

 10 51 30 C 

 10 57 35 J 

 58 04,5 

 04 30 

 17 40 

 54 42 

 12 10 

 23 06 

 29 14 



Mean time. 



2 



2 



4 



2 



10 



11 



11 



Apparent time. 



Apparent time 

 Apparent time. 



Difference of© and 3' s semidiameters. . . 16' 04",27 

 Difference of horizontal parallaxes. ... 4, 01 



Horary relative motion in longitude. ... 3 53, 45 

 Horary motion of $f i n latitude, N. . . . 51 91 



Appt. conjunction at Paris, by the observ. at Paris and Greenwich = 4'' 

 Apparent conjunction, by observations at Philadelphia. • . 22 



Apparent conjunction Cambridge. . ' • 23 



Longitude of Philadelphia west from Paris. . 5 h 10' 10" 

 Cambridge west from Paris . . 4 53 53 



04' 09" 

 53 59 

 10 16 



Passage of Mercury over the disk of the sun, Novr. 5th, 1 787. 



Observations. 



Apparent time 

 b / " 



Paris, interior contact at the ingress. . . . 1 19 00 



Viviers. .... do. ... 1 28 32 



Cadiz do 44 30 



Marseilles. . . do. . . . 1 31 07 



Montauban. . . do 1 15 14 



Vienna. . . .do 2 15 08 



Prague. . . .do. . . 2 07 26 



r \ . . . 20 08 00 



„, ., , , , . S II . . . . . . 20 09 30 



Philadelphia. < m 00 59 34 



MV . . . .- . 1 01 14 



I 20 24 04 



Cambridge in MI 20 25 52 



N. England. }HI 1 15 44 



MV 1 17 36 



Montevideo III 2 15 11 



IV 2 16 54 



Difference of the horizontal parallaxes. . . . = 4",I49 



Horary relative motion in longitude between the ingress and conj. 349,55 

 Between the egress and conjunction. .... 350,00 



Horarv motion in latitude, N. . . . . • • 51,40 



J diameter of ©— 1",50 irradiation. 969,28 



h / # 



Apparent conjunction at Paris, bv the observations in Europe = 3 33 16 



Philadelphia 22 23 22 



Cambridge 22 39 36 



Montevideo. . . . . 23 39 01 



Longitude of Philadelphia west from Paris. . . . 5 09 54 



Cambridge west from Paris 4 53 40 



Montevideo west from Paris. . - . 3 54 15 



