10 



(474) 



PARALLAXES OF STARS— BOOTH AND SCHLESINGER. 

 02 82, 4 h 17 m , + 14° 49'. 



[Memoirs National 

 [Vol. XIX, 



+12.60 c+ 26.08 it- 1.38 tt= + 0.0002 mm. c= -0.003S mm. 

 +340.95 -16.24 =+ .5319 M = + .00194. 



+10.24 =- .0067 *•= + .00191. 



Probable error for unit weight, ± .0015 mm. = ±".021. 

 Annual proper motion in R. A., + ".103 ±".005. 

 Relative parallax, + ".028±".007. 



The spectroscopic determination of this parallax at Mount Wilson yields +0".024. 



The companion is two magnitudes fainter. Comparatively rapid orbital motion is present. 



< 475;) Piazzi 256, 5 h 48 m , +31° 41'. 



+14.20 c+ 22.50 n+ 0.49 *-=- 



+305.35 - 3.67 =- 



+11.49 = + 



Probable error for unit weight, ± 



Annual proper motion in R. A., — 



0.0214 mm. c= -0.0002 mm. 



.2673 y.= - .00084. 



.0198 ir=+ .00146. 



.0012 mm. = ±".017. 

 ".045 ±".004. 



Relative parallax, 



+ ".021 ±".005. 



No other determination of this parallax has been published, 

 the proper motion. 



Porter gives — 0".051 for 



