Georgian Vianet and Its Satellites. 369 
mean of the two dark ones 4^,295; as they are given in my 
Paper on the diameter and magnitude of the Georgium fidus, 
printed in Volume LXXIII. of the Philofophical Tranfa£tions, 
p. 9. 11, 1 2, 13. Whence we obtain another mean diameter 
4", 0462 5 ; which is probably the moll accurate of any that we 
have hitherto afcertained. And let us fuppofe this meafure to be- 
long to the fituations of the earth and of the new planet as 
they were at 10 o’clock, the 25th of O&ober, 1782 ; which is 
about the middle of the feveral times when thofe meafures 
from which this is deduced were taken. Then, by the tables 
already referred to, we compute the diftance of the two pla- 
nets from the fun and the angle of commutation; whence, by 
trigonometry, we find the diftance of our new planet from 
the earth for the fuppofed 25th of October; and thence deduce 
its mean diameter, which is 3^, 90554. "1 his, when brought 
to what it would appear if it were feen from the fun at the 
earth’s mean diftance, gives T 14" ,5246; which, compared 
with 1 7 ,/ ,2 6, the earth’s mean diameter, is as 4,31769 to 1. 
The Georgium fidus, therefore, in bulk, is 80,49256 times as 
large as the earth ; and confequently its denfity lefs than that 
of the latter in the ratio of ,220401 to 1. 
To thefe particulars, though many of them may be of no 
other ufe than merely to fatisfy our curiofity, we may alfo add, 
that the force of gravity, on this planet’s furface, is fuch as 
will caufe an heavy body to fall through 18,67308 feet in one 
fecond of time. 
It remains now only, in order to complete our general idea 
of the Georgian planet, to inveftigate the fituation of the orbits 
of its fatellites. 1 have before remarked, that when I came to 
examine the diftance of the fecond, I perceived immediately 
that its orbit appeared confiderably elliptical. This induced 
me 
