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XXII. On the Georgian Planet and its Satellites . 
By William Herfchel, LL.D. F. R. S. 
Read May 22, 1 788. 
I N a Paper, containing an account of the difcovery of two 
fatellites revolving round the Georgian planet, I have given 
' the periodical times of thefe fatellites in a general way, and 
added that their orbits made a confiderable angle with the 
ecliptic. It is hardly necedary to mention, that it requires a 
much longer feries of obfervations, to fettle the mean motions 
of fecondary planets with accuracy, than I can hitherto have 
had an opportunity of making ; but fince it will be fome fatif- 
fa£tion to aflronomers to be acquainted with feveral of the 
mod: interefting particulars, as far as they can as yet be afcer- 
tained, I (hall communicate the refult of my pad; obfervations ; 
and believe that, coniidering the difficulty of meafuring ob- 
jefts which require the utmoft attention even to be at all per- 
ceived, the elements here delivered will be found to be full as 
accurate as we can at this time expefl to have them fettled. 
The mod: convenient way of determining the revolution of 
a fatellite round its primary planet, which is that of obferv- 
ing its eclipfes, cannot now be ufed with the Georgian fatel- 
lites, as will be fhewn when I come to give the pofition of 
their orbits ; and as to taking their fituations in many fuccel- 
five oppofitions of the planet, which is like wife another very 
eligible method, that mud: of courfe remain to be done at pro- 
per 
