COMPARISON OF CATALOGUES OF STARS. 



421 



NAME OF STAK. 



q Aquarii . . 



B. A. C. 7803 

 a Aquarii . . 

 J Aquarii raed. 

 ^ Piscis Austr. 



226 B. Cophoi . 

 g Piscis Austr. 

 8 Aquarii . . 

 a Piscis Austr. 

 Piazzi, XXII. 26 



55 Pegasi . . 



c 2 Aquarii . . 



59 Pegasi . . 



<jp Aquarii . . 



%fj s Aquarii . . 



o Cephei . . 

 b 1 Aquarii . 



6 Piscium . . 

 b 3 Aquarii . . 

 15 Andromedse 



i 1 Aquarii . . 

 ■xp Andromeda? 



S Sculptoris . 

 Piazzi, XXIII. 204 

 Groom. 4163 . 



Piazzi, XXIII. 237 

 30 Piscium . . . 



2 Ceti .... 

 33 Piscium . . . 



Right Ascensions 

 for 1875.0. 



22 13 37.255 

 22 16 41.750 

 22 18 53.569 

 22 22 23.723 

 22 24 23.653 



22 30 4.184 



22 33 44.346 



22 48 0.927 



22 50 44.396 



22 52 45.342 



23 

 23 

 23 

 23 

 23 





 2 

 5 

 7 

 12 



42.481 

 46.808 

 25.571 

 50.929 

 27.548 



23 

 23 



23 



23 26 44.012 



23 28 30.861 



13 29.972 

 16 24.228 

 21 37.677 



37 

 39 



42 



14 



is 



43.014 

 50.685 

 24.703 

 8.030 

 46.199 



23 50 50.956 



23 55 32.926 



23 57 20.130 



23 58 56.229 



Auwers 

 minus 

 II. C. O. 



-.037 

 -.014 



+.017 



+.011 



Snflbrtl 



minus 



H. C. O. 



.040 



+.061 



-.002 

 -.068 



-.117 



Newcomb 



minus 



II. C. O. 



+.010 

 -.027 



019 



017 



.016 



.02 



+ 



+.014 



Declinations 



for 1875.0. 



+ 43 



+ 

 - 

 -32 



26 

 6 

 44 

 39 

 59 



53.90 

 57.01 

 36.65 

 32.91 

 11.36 



+75 34 56.29 

 -27 41 42.81 

 29 



-16 

 -30 17 

 -30 7 



+ 8 

 -21 

 + 8 

 - 6 

 -10 



+67 

 -20 

 + 5 

 -21 

 +39 



-18 

 +45 

 -28 

 +50 

 +73 



44 



51 



2 



43 

 17 



25 

 46 

 41 

 36 

 32 



58 

 43 

 49 

 55 

 42 



6.96 



3.52 



54.46 



4.00 



2.93 



29.32 



21.32 



39.49 



40.04 

 58.52 

 33.16 

 19.16 



49.88 



14.19 

 34.22 

 17.03 

 38.07 

 51.86 



+55 36.81 



- 6 42 32.08 

 -18 1 55.09 



- 6 24 24.93 



Auwers 



minus 



H. C O. 



+0.25 

 -0.53 



+0.53 



S:ilT..nl 



minus 



II. 0. O. 



+0.04 



+0.13 



-0.59 



+0.48 

 +Y.52 



+1.25 



Boss 

 minus 

 II. O. 



+0.80 



+0.31 



-0.35 



+0.31 



-0.31 



+1.29 



Newcomb 



m in us 

 II. 0.0. 



+ 1.04 



+079 



+0.31 



-0.36 



+ 1.28 

 +0.31 



-0.32 



+1.29 



+0.10 



+0.27 



It will be seen that the deviations of the positions of both the Primary and the 

 Secondary catalogues from the system of Auwers are well distributed, whatever the 

 extent or the order of the combination of the residuals which may be chosen. This 

 distribution is not quite so well effected in the comparisons with Safford, Boss, and 

 Newcomb ; first, because it is based upon a less number of stars, and second, because 

 it involves the determination of the systematic relation between three catalogues 



instead of two. 



These relations are exhibited in the following tables : — 



vol. x. 



54 



