CATALOGUE OF POLAR STARS. 



233 



The following example is given in illustration of the application of equations (G) 



the problem b 

 in equator 



m e 



d 



to 



fr 



mean equator and equinox of 1875.0 



equinox of 1867.0 and of 1883.0. G 



the 



dinates of 



Groombridge 1119 for 1875.0, to find the values for 18G7.0 and 1883 



« for 1875.0 



h. m. s. 



7 29 5.631 



d for 1875.0 



// 



+ 88 59 37.09 



« 1875.0 

 z + X 

 A 



For 1867.0. 

 t tr 



112 16 24.465 

 -0 3 5.554 

 112 13 18.911 



For 1883.0. 



o r // 



112 10 24.465 

 + 3 2.-25 

 112 19 27.290 



log tan 8 

 log cos A 



log tan 31 



1.7553949 



9.5777158w 



.1776791ft 



1.7553949 

 9.5796095m 



2.1757854n 



// 



// 



M 







31 + 



+ 90 22 50.060 

 2 40.437 

 + 90 20 9.623 



+ 90 22 56.048 

 + 02 40.431 

 + 90 25 30.479 



loc; tan A 

 log cos M 



losr tan A cos 31 



log cos (31 + 0) 

 log tan A' 



0.3887667ft 

 7. 8223112m 



8.2110779 

 7.7682224^ 



0.4428555?* 



0.3805553;* 

 7.8242051n 



8.2107604 

 7.8720975ft 



0.3386629n 



A' 



i 



V 



// 



+ 109 50 3.500 

 3 3.106 



// 



+ 114 37 52.839 

 + 03 5.852 



a ! in arc 



// 



+ 109 47 0.394 



rr 



+ 114 40 58.691 



a ! in time 



h. m. 



s. 



7 19 8.026 



h. m. 



,s. 



7 38 43.913 



log tan (M + 6) 

 log cos A' 



log tan d' 



2.2317701* 

 9.5305854ft 



2.1278903ft 

 ,6199049ft 



1.7477952 



5' 



rr 



+ 89 35.27 



// 



+ 88 58 33.76 



