Parallaxes of /a, and e Gassiopeise. 



21 



Table Y. — Parallax Equations. 

 Comparison Stars c and d. 



2,2= 19.38 



Normal Equations. 



4- 1 7 ■ oooo.r 4" 7-°5oOi/ + 2.iio07r-|- 6.2900 = 



-(-28.58S9 — 19.1220 -(- 9.9503 = 



+55-3681 —42.4082 = o 



Solution 

 In units 2d dec. place. 



IT = +0.9479 ±0.1262 

 »/ = +0.4525 d=o.i849 



In Arc. 



= — 0.6753 zt0.2I08 



w = +0.2655 ±0-0353 

 y = +0. 1267 ±0.0518 

 X = — 0.1892 ±0.0618 



Scale. Arc. 



Prob. error of one equation = 0.7935 = o".2222 



