79 
Satellites of the Georgium Sidus, See. 
additional satellites probably employ in revolving round their 
planet. Now, as this can only be ascertained with accuracy by 
many observations, we must of course remain in suspense, till a 
series of them can be properly instituted. But, in the mean 
time, we may admit the distance of the interior satellite to be 
^ 5", 5, as our calculation of the estimation of March 5, 1794, 
gives it; and from this we compute that its periodical revolution 
will be 5 days, 21 hours, 25 minutes. 
If we place the intermediate satellite at an equal distance 
between the two old ones, or at 38", 57, its period will be 10 
days, 23 hours, 4 minutes. 
By the figure of Feb. 9, 1790, it seems that the nearest ex- 
terior satellite is about double the distance of the farthest old 
one ; hence, its periodical time is found to be 38 days, 1 hour, 
49 minutes. 
The most distant satellite, according to the calculation of 
the observation of Feb. 28, 1794, is full four times as far from 
the planet as the old 2d satellite; it will therefore take at least 
107 days, 16' hours, 40 minutes, to complete one revolution. 
It will hardly be necessary to add, that the accuracy of these 
periods depends entirely upon the truth of the assumed dis- 
tances ; some considerable difference, therefore, may be expect- 
ed, when observations shall furnish us with proper data for 
more accurate determinations. 
Slough, near Windsor, 
September 1, 1797. 
