VOL. LXXXVIII.] PHILOSOPHICAL TRANSACTIONS. 273 



former. A glimpse of a satellite is mentioned, which was preceding the 1st, but 

 nearer the planet. The positions of the 1st satellite the same evening was, by 

 measuring, found to be 62°. 1 n. f. which is still a considerable way from its great- 

 est elongation ; but our new satellite preceded it, and was therefore more advanced 

 in its orbit, or nearer its greatest distance : and yet the observation says, that it was 

 not so far from the planet as the 1st ; though this latter was in a more contracted 

 part of its orbit. It follows therefore that this was also an interior satellite. Now, 

 since we may allow these 3 observations to belong to the same, we ought not to 

 make a distinction ; but admit, as sufficiently established, the existence of at least 

 one interior satellite of our new planet. 



An intermediate satellite. — March 26, 179 4 * A satellite was suspected, directly 

 north of the planet. At first it could not be verified, but was seen perfectly well 

 afterwards. It was supposed that probably it might be a star, but this was left un- 

 decided. The observation of March 27 th however removes all doubt on the sub- 

 ject; as it fully affirms that the small star observed the 26th, at ll h 32 m , was 

 gone from the place in which it was the day before. Such strong circumstances 

 are mentioned in confirmation, that we cannot hesitate placing this among the list of 

 existing satellites. It was not the interior satellite of Jan. 18, 1790 ; for both the 1st 

 and 2d known satellites were in full view March 26th ; and the observation places 

 this new one in a line drawn from the planet continued through the 1st ; with the 

 remark, that it was a little farther from the planet than the 1st. The 2d was then 

 near its greatest southern elongation, and we may perceive that the orbit of this 

 new satellite is situated between the orbits of the other two. 



We have a 2d observation of the same satellite March 27, 1794 ; where, among 

 the glimpses of additional satellites at ll h 41 m , is mentioned one in a place proba- 

 bly agreeing with the new satellite of March 26th, which, by its motion, must 

 have been carried forward, so as to be where the observation of the 27 th says it 

 was, namely, a little farther off and after the 1st ; that is, at a little greater dis- 

 tance from the planet than the 1st, and not so far advanced in its orbit as that 

 satellite. This amounts not only to an additional proof, but even announces the 

 recognition of the satellite, and its motion in the course of one day. 



An exterior satellite. — Feb. 9, 17Q0. A new satellite was seen, in a line with 

 the planet and the 2d satellite. To convince us that this was not a fixed star, we 

 have the observations of 2 other nights, the 11th and 12th of February, where the 

 removal of it, from the place in which it was Feb. 9, is clearly demonstrated. As 

 it was in a line continued from the planet through the 2d satellite, its orbit must 

 evidently be of a greater dimension than that of the 2d ; I shall therefore set it 

 down as an exterior satellite^ Most likely this satellite also was seen among the 

 supposed satellites south of the planet, March 27, 1794 ; where we find mention 

 made of some others south, at a good distance. In that case, this will make a 2d 

 observation. 



We have a 3d observation of the same new satellite, March 5, 1796 ; when a 



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