Occultation of Aldebaran by the Moon, 



Vol. VI. to face page 219 



Observed in the Capital of Porto-Rico and different places of Europe : October 21st, 1793. 



PARIS MARINE OBSERVATORY 



FICVERAS. 



PORTO-RIfO. 



MARSEILLES. DANTZICK. 



Apparent times observed. 

 Long, from Paris (national observy.) 

 Apparent times in Paris. 

 Equation of time. 



Latitude Vertical angle. 



Logarithm of the earth's radius. 



The sun's right ascension. 



Moon's longitude by the tables. 



Moon's latitude. 



Moon's polar horizontal parallax. 



Moon's horizontal semidiameter. 



Altitude of nonagesime. 



Moon's true distance from the nonag. 



Parallax in longitude. 



Parallax in latitude. 



Apparent semidiameter — 1" inflection 



Conjunction, apparent time. 



True diff. of lat. at conjunction. 



Conjunct, by the immersion's^ 



Allowing 22' 57" difference > inflect. 



of latitude at conjunction andj inflect. 



Latitude of Gotha. 



Paris marine observatory 



Figueras. 



Ferrol. 



Porto-Rico. 



Berlin. 



Marseilles. 



Dantzick. 



50 57 46 

 48 51 04 



42 16 00 



43 29 30 

 18 28 45 

 52 31 30 

 43 17 49 

 54 21 05 



Mean conjunction by the immersion and emersion at Paris.— - 



b • if 



Conjunction observed in Gotha — diff long.=true conjunction in Paris. =18 06 30 6 

 Do. do. in Paris— diff. long.= . . do. 18 06 36 9 



Do. do. in Figueras. . . . . do. 18 06 35 5 



Mean conjunction, apparent time in the national observatory of Paris 18 06 34 3 



Difference of latitude at conjunction 



[ 



Conjunction by the immersion's allowing 22' 57" difference of latitude at 

 conjunction and inflection. = 1" inflection 2" 



By the immersion of Gotha. 

 do. Paris, 



do. Figueras. 



do. Berlin, 



do. Marseilles. 



do. Dantzick. 



Mean conjunction in apparent time 

 By observations of Gotha and Porto-Rico. 



