MILLER— PARALLAXES OF FIFTY STARS. 



133 



No. 39. B.D. + 6°.4357. /? Aquilae = 02 532. (19'' 5o"'.4; 

 + 6° 9'.) Mag. 3.90. /x = + o^oo23 ; — o".483. 



Spectrum K, 



The measures are in longitude. This star is B. G. C. 9724. The 

 distance between the components is i2".o8 and their magnitudes are 

 3.4 and 1 1.3 respectively. The brighter component only was re- 

 corded. Burnham says, " But little change in either angle or dis- 

 tance but components have a large common proper motion." 

 Other published parallaxes are : 



Mitchell, (Photographic), + o".o66 ± o".oii. 

 Adams, (Spectroscopic), -\-Q".oy2. 

 Russell, (Hypothetical), -|- o"-053. 



Solution: 



c^ + o".ioo. 



{1 = — 0".0I2 ± o".003. 



7r = + o".o67 dz o".oii. 

 p. e. unit weight, ± o".022. 



PROC. AMER. PHIL. SOC, VOL. LIX, I, MARCH 3I, I92O. 



