revolving within the Orbit of Jtipiter. 79 



After making the investigations alluded to, M. Damoiseau 

 finds, that, by supposing the comet to have passed its perihelion 

 in 1826 on March- 18th. 9688, its return to its next perihelion 

 will take place in 1832 on November 27. 4808, being a period 

 oi Jive years and 112| days. 



Setting out, then, from the elements of 1826, he has com- 

 puted, by the aid of the variations with which the calculus has 

 furnished him for the actual revolution, the following ele- 

 ments : 



Passage of perihelion 1832, Nov. 27. 4808 

 Mean time of Paris, reckoned from midnight, 



Longitude of the perihelion, > 109°56' W 



Longitude of the ascending node, - 248 12 24 



Inclination, - - 13 13 13 



Eccentricity, - - 0.751748 



Half the greater axis, - - 3.53683 



In order to assist astronomers in finding this remarkable 

 body at its return in 1832, M. Damoiseau has computed the 

 following ephemeris. 



