Academy of Sciences.] 

 No. 2.] 



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INDIVIDUAL DETERMINATIONS. 

 Weisse 1196, 19 h 49 m , +1°41'. 



25 



+14.30 c+ 26.19 ju-3.74 tt=+ 0.0040 mm. c=+0.0013 mm. 

 +424.31 +8.20 =+ .0234 M =- .00009. 



+8.38 =+ .0226 7T=+ .00338. 



Probable error for unit weight, ± .0027 mm. = ±".039. 

 Annual proper motion in R. A., — ".005 ±".008. 

 Relative parallax, + ".049 ±".015. 



No other determination of this parallax has been published. Porter gives 0".000 for the 

 proper motion. 



This star, as explained in connection with Weisse 1190, was referred to three comparison 

 stars not originally intended for this purpose and not very well suited to it. This accounts 

 for the unusually large probable errors. Weisse 1190 and Weisse 1196 have the same large 

 proper motion. See Astronomical Journal No. 776. Adopting +0". 032 as the mean absolute 

 parallax of the two, their linear separation must be at least 5,000 times that between the earth 

 and the sun. 



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r, Cygni, 19 h 53 m , +34° 49'. 



+13.30 c- 6.79 n- 2.65 ir=- 0.0087 mm. c= -0.0007 mm. 

 +202.54 +13.37 =- .0425 m=- .00027. 



+ 9.05 =+ .0029 ir=+ .00051. 



Probable error for unit weight, ± .0009= ±".014. 

 Annual proper motion in R. A., — ".014 ±".004. 



Relative parallax, 



+ ".007 ±".005. 



