108 THE ORBIT OF URANUS. 



1715, Uarrh 4. Rigid Ascension. 



li. m. s. 



Clock time of transit of Uranus, 12 27 1 



Correction for clock and instrument, — 1 4 20.8 



Right ascension of Uranus from observation, 11 22 40.2 



1715, March 4. Declination. 

 Z. D. R. Dec. Eq. point. 



(? Leonis, 46° 19' 40" -f 1' 0" -|-5° 8' 6" 51° 28' 46' 

 Uranus, 46 33 10 +11 



h Virginis, 46 13 20 -f 1 5 14 17 51 28 37 



Circle reading for Uranus, 46° 34' 11" 



Equatorial point, 51 28 42 



Observed declination of Uranus, -|-4 54 31 



1715, MircJi 5. Rigid Ascension. 



T. R. A. C. C 



h. m. s. h. m. s. h. m. s. s. 



d Leonis, 11 46 24 10 45 52.5 —1 31.5 25.5 



Uranus, 12 22 59:: 



6 Virginis, 12 45 49 11 45 23.6 —1 25.4 29.1 



h. m. 8. 



Transit of Uranus, 12 22 59 



Correction for clock and instrument, — 1 27.7 



Observed right ascension of Uranus, 11 22 31.5 



The large apparent clock rate, and the colons after the time of transit, both 

 throw doubt on this observation. 



Declination. 

 The circle readings for the stars are the same as on the day preceding, while 

 that for Uranus is 50" less. The declination is therefore 50" greater, or 



-f4° 55' 21". 



1715, March 10. Right Ascension. 



T. R. A. C. C 



h. ra. s. h. m. s. h. m. s. s. 



cZ Leonis, 11 25 58 10 45 52.5 —0 40 5.5 59.5 



f Leonis, 11 32 28 10 52 25.1 —0 40 2.9 5S.1 



Uranus, 12 1 42 



h Virginis, 12 25 18 11 45 23.6 —0 39 54.4 58.2 



h. m. a. 



Clock time of transit of Uranus, 12 1 42 



Correction for clock and instrument, — 39 58.6 



Observed right ascension of Uranus, 11 21 43.4 



