114 SIR THOMAS BRISBANE and MR RUMKER'S Astronomical 



Elliptic Elements of the Comet in September 1822. 



Time of passing the Perihelion, 

 Long, of Perihelion upon the Orbit, 

 Long, of descending Node, 

 Inclination, 

 Logarithm e, 

 Logarithm ^ Parameter, 

 Sidereal Revolution, 



Oct. 24.221201. Mean Time at Paramatta. 



271 36' 18.3" 

 272 42 23 



52 40 41 



9.9966440 



0.3585731 

 663554.3 Days: 



from mean Equinox. 

 1822. 



= 82 53' 11". 



The agreement between the elements and the observations 

 will be seen from the following Table : 



Transit of Mercury over the Sun's Disc, November 3. 1822. 



Immersion of preceding limb, 

 Complete Immersion, 

 Emersion of preceding limb, 

 Complete Emersion, 



23 h 20" 53".95 Apparent Time at Paramatta. 

 23 23 34 .53 



2 5 93 .03 



2 8 21 .55 



