The Parallax of -q Gassiopeiae. 321 



Table Y. — Parallax Equations. 

 Comparison Stars k and I. 



Normal Equations. 



+22.oooo.^• +13.4400^ + 7.870071- — 0.8600 = o 



+36.1266 — 2.1518 +13.8148 = o 



4-10.6869 — 10.3893 =^ o 



Solution. 

 In uuits of 2d dec. place. lu Arc. 



// // 



TT = +1.0603 ±0.5529 - = +0.2970 ±0.1549 



y = — 0.2493 ±0.2591 y = — 0.069S zho.0726 

 X = — 0.1879 ±0.2919 X = — 0.0526 ±0.0818 



Scale. Arc. 



Probable error of one equation = ±1.370 = ±o.^''384 



