148 



IDENTITY OF THE PLANET LEVERRIER 



heavens. I furnished Prof. Hubbard with the list of guide-stars from Hussey's XlVth 

 Hour of the Akademischen Sternkarten, as follows: 



Mag. 9 , R. A. 1800, 14h. 8m. Is., Dec. 1800, — U°39'.2, Authority B, 



9 , 

 8 , 



8 , 



9 , 



8 , 



9 , 



8 , 



7.8, 



, 



9 , 



7 , 



9 , 



8.9, 



• 11 27.5 

 11 8.0 

 11 26.5 

 10 55.1 

 10 28.4 



10 53.3 



11 8 .3 



11 21.0 



10 47.6 



11 25.8 

 10 45.2 

 10 42.9 

 10 58.4 



B, 

 B, 

 L, 

 B, 

 L, 

 L, 

 L, 



L, 



B, 

 B, 

 B, 

 B. 



B, 

 B, 

 B, 



P 

 P 

 B 



, Expected to be missing 

 as being Leverrier. 



The first clear night after detecting this coincidence was the fourth of February. 

 Prof. Hubbard examined the region with the Equatorial, and reported to Lieut. Maury 

 the next morning, February 5th, that he had found all the guide-stars in this list; but that 

 the star that was designated as expected to be missing, was indeed missing. 



Prof. Hubbard reviewed the region several times. The star which should have pre- 

 ceded the missing star by 1° was in place. It was brought to the middle transit wire and 

 to the bottom of the field. The Lalande star should have been in the upper portion of 

 the field. It was not there. Nor was there in the vicinity any star that could be reason- 

 ably supposed to have been erroneously recorded as in the place of the missing star. I 

 may add, that this region has since been examined by Lieut. Maury and Prof. Hubbard. 

 The star is certainly missing. 



On the hypothesis that this missing star was Leverrier, I have computed the (III.) 

 Elements below. They show that on this supposition Leverrier is now approaching the 

 perihelion, or, in other words, is in the fourth quadrant of true anomaly. 



I submit the three sets of elements above referred to : 



