Academy of Sciences.] 

 No. 2.] 



(47*) 



INDIVIDUAL DETERMINATIONS. 

 9 Camelopardis, 3 h 49 m , +60° 49'. 



c= -0.0011 mm. 

 At= — .00044. 



= + .00069. 

 '.028. 



+11.80 e+ 19.03 0+0.20 ir=- 0.0212 mm. 

 +332.70 -7.07 =- .1724 

 +8.29 =+ .0086 

 Probable error for unit weight, ± .0019 mm. = ±' 

 Annual proper motion in R. A., - ".023 ±".006. 

 Relative parallax, + ".010±".010. 



The spectroscopic determination of this parallax at Mount Wilson yields +0".010. 

 gives +0".003 for the proper motion. 



There is an eighth magnitude companion at a distance of 2" with which this star forms 

 OS 67. The two have a common proper motion. 



Boss 



(473) 



55 Tauri, 4 h 14 m , +16° 17'. 



+13.00 c- 6.10 0+ 1.24 -n-=- 0.0145 mm. e=-0.0004mm. 

 +300.26 - 5.06 =+ .6151 m=+ -00209. 



+10.62 =+ .0200 t=+ .00293. 



Probable error for unit weight, ± .0013 mm. = ±".019. 

 Annual proper motion in R. A., + ".111 ±".004. 

 Relative parallax, + ".043 ±".006. 



The spectroscopic determination of this parallax at Mount Wilson is +0".023. 



There is a companion two magnitudes fainter with which this star forms OS 79. The two 

 are in moderately rapid orbital motion. 



Plate 10493, taken 1917, September 17, was rejected for discordance. The residual was 

 -0".15, weight 0.7. 



