P’wo Satellites of the Georgian Planet . i 27 
pretty well affured was alio a fatellite, efpecially as I had, on 
the night of the 14th of January, obferved two fmall Stars 
which were wanting the 17th, and again miffed other two the 
24th which had been noticed the 18th; but, whether owing 
to my great attention to the former fatellite, or to the clofenefs 
of this latter, which was nearly hidden in the rays of the planet, 
I could not be well allured of its motion. Indeed, towards 
morning, when a change of place, in fo considerable an in- 
terval as nine hours, would have been moll confpicuous, the 
moon interfered with the faint light of this Satellite, fo that I. 
could no longer perceive it. 
The SirSt moment that offered for continuing thefe observa- 
tions was on February the 9th, when I faw my firSb difco- 
vered fatellite nearly in the place where I expefled to find it. 
I perceived alfo, that the next luppofed fatellite was not in the 
Situation where I had left it on the 7th, and could now diStin- 
guilh very plainly that it had advanced in its orbit. Since that 
day, in the fame direction with the other fatellite, but at a 
quicker rate. Hence it is evident, that it moves in a more con- 
tra61ed orbit ; and I Shall therefore call it in future the firSt 
Satellite, though lall difcovered, or rather lall afcertained ; Since 
I do not doubt but that I faw them both, for the firfl time, on 
the fame day, which was January the nth, 1 787. 
I now directed all my attention to the firft fatellite, and had 
an opportunity to fee it for about three hours and a quarter ; 
during which time, as far as one might judge, it preferved its 
courfe. The interval which the cloudy weather had afforded 
was, however, rather too Short for feeing its motion Suffi- 
ciently, fo that I deferred a final judgment till the 10th ; 
and, in order to put my theory of thefe two Satellites to a 
trial, I made a Sketch on paper, to point out before-hand their 
Situation 
