AT THE OBSERVATORY AT PARAMATTA. 



57 



Mean Positions of the above Stars for the Time of the Comparison, 



Stars. 



Mean JR. 



Mean Declin. 



Stars. 



Mean JR. 



Mean Declin. 



e 

 h 



i 



k 



1 



m 



n 



o H.C. 



o Mayer 



P 



q 



r 

 s 

 t 

 u 



V 



Anon. 



is P. XVI. 85 

 X Ophiuclii. 



o ' // 



243 29 28 



243 30 50.5 



243 31 10 



244 54 44 

 243 29 28 

 243 21 57 



243 20 29 

 241 15 56 



241 54 4 



242 6 30 



244 3 42 



242 14 16 



243 18 32 

 243 19 3 



241 28 8.7 



242 15 4.7 

 242 2 51.7 



25 55 S. 



16 



8 

 27 



9 

 39 

 40 

 13 

 30 

 35 

 27 



7 

 48 

 47 

 23 

 25 

 56 



16.9 S.' 



24.9 S. I 



35.2 NJ 



49.3 N. 

 9 S. 

 6 



44 

 12 

 8 

 12 

 14 

 39 

 24 

 49.3 

 47.6 

 11.2 



X 



Anon. 



X 



■a 



<P 



t 

 U 



? 



X 



U! 



A 

 B 

 C 

 D 



243 9 10.3 



241 22 22.5 

 241 39 29 



240 

 241 

 241 

 240 

 241 

 242 

 242 

 241 



49 

 1 



58 

 51 

 58 

 29 

 40 

 27 



7.8 

 2.3 

 28.5 

 37.2 

 30.2 

 50 

 19.3 

 15 



Hist. Cel. p. 472. 

 241 2 35.3 

 ra Scorpii. 

 87 Bode Scorpii. 

 2 c Scorpii. 

 1345 Coel. Aust. 

 P. XVI. 36 



16 35 24.2 S. 

 19 37 13.3 

 19 39 9.3 



19 46 30.3 



20 56 11.1 

 20 38 40.0 



22 50 32 



23 19 29.7 



22 50 32.4 



23 43 58 

 16 36.7 

 49 34 



33 

 23 



25 1 3 



Hence the following Positions of the Comet. 



1822. 



Sept. 23 



24 

 26 



27 



29 



30 

 Oct. 12 



16 



21 

 22 

 26 



Sidereal Time 

 at Paramatta. 



h 

 20 



20 

 20 



21 

 21 

 20 

 21 



21 



22 

 21 



22 



15 46 



11 28 

 8 52 



37 46 



12 30 

 17 45 



6 27 

 21 39 



8 23 

 29 26 



5 



2.3 



Mean JR. 



244 

 244 

 243 

 243 

 243 

 243 

 242 

 241 

 241 

 241 

 241 



30 8 



18 44 

 55 51 

 45 45 

 27 18 



19 30 

 6 31 



49 49 

 36 37 

 34 

 25 32 



Mean Declin, 



10 22 N. 



2 57 



6 39 S. 

 13 3 



11 51 



7 9 

 57 2 

 39 36 

 46 20 

 20 18 

 36 23 



1822. 



Oct. 27 



28 



29 



30 



Nov. 



4 



7 



8 



10 



11 



Sidereal Time 

 at Paramatta. 



h m s 



22 6 51 

 21 47 45 



21 52 34 



22 2 51 

 22 39 4 

 22 35 38 

 22 45 47 



22 54 2 



23 3 46 

 23 6 46 



Mean A\. 



Mean Declin. 



241 23 20 23 8 57 S. 

 21 58* 23 39 17 



21 

 18 45 

 14 56 

 12 43 



7 51 

 7 13 



24 10 40 

 24 41 41 



26 13 3 



27 11 15 

 10 12j 28 36 41 



9 49 29 4 26 



29 59 56 



30 26 44 



From these Observations I have calculated the following Elements. 



Parabola. Ellipsis. 



Passage over Perihelion 1824, Oct. 24''.164S53. . . .24''.221201 Mean Time Paramatta. 



Longitude of Perihelion 271° 40' 32" 271° 36' 18".3 



Longitude of Ascending Node 92 42 23 .... 9.2 42 23 



Inclination 52 40 41 .... 52 40 41 



Logarithm of Perihelion Distance .... 0.0592269. 



Logarithm of Eccentricity 9.9966440 f = 82° 53' 11" 



Logarithm of half Parameter 0.3585731 



Logarithm of half the Major Axis 2.1728525 



Sidereal Revolution 663554.3 days = 1816.71 years. 



MDCCCXXIX. I 



