4Q2 PHILOSOPHICAL TRANSACTIONS. [aNNO 1788. 



The following table contains in the first column the correct mean time when 

 the measures were taken. The 2d gives the quantity of these measures. In the 

 3d column are the same measures reduced to the mean distance of the Georgian 

 planet from the earth. The 4th contains the calculated positions of the satellite 

 as it would have appeared to be situated if it had moved in a circular orbit at rect- 

 angles to the visual ray; and the degrees are numbered from the first observa- 

 tion supposed to have been at zero, and are carried round the circle from right 

 to left. 



In the use of this table Dr. H. partly contents himself with the construction 

 of a figure, and only applies calculation to the most material circumstances. 

 And from the whole calculations is inferred the following snmmary of results. 



The first satellite revolves round the Georgian planet in S'* 17*^ 1"^ l9^ — Its 

 distance is 33'-'.— -And on Oct. IQ, 1787, at ig^ 11"^ 28', its position was 76° 

 43' north following the planet. 



The 2d satellite revolves round its primary planet in 13^ 11^ 5"^ 1.5'. — Its 

 greatest distance is 44^^23. — And on Oct. I9, 1787, its position at 17^ 22"^ 40% 

 was 76*^ 43' north following the planet. Last year its least distance was 34^.33 ; 

 but the orbit is so inclined, that this measure will change very considerably in a 

 few years, and by that alteration we shall know which of the double quantities 

 set down for the inclination and node of its orbit are to be used. 



The orbit of the 2d satellite is inclined to the ecliptic 



{39° 43' %'!}' it^^^<=«°<li"g "°de is in { ^l" °J Iag^°tarius }• ■^*'^" *^ P'"' 

 net passes the meridian, being in the node of this satellite, the northern part of 



{east ~i 

 west) * The situation of the orbit of the 



first satellite does not seem to differ materially from that of the 2d. We shall 



have eclipses of these satellites about the year -! ^^ k when they will appear 



to ascend through the shadow of the planet almost in a perpendicular direction 

 to the ecliptic. 



The satellites of the Georgian planet are probably not less than those of Jupiter. 



The diameter of the new planet is 34217 miles. 



The same diameter seen from the earth, at its mean distance, is 3''.90554. 



From the sun, at the mean distance of the earth, l' 14'^5246. 



Compared to that of the earth as 4.317^9 to 1 . 



