The Rutherfurd Photographic Measures. 



155 



Table XXIII. — Various "Values op Parallax op 61 1 Cygni. 



Method. 



Star 



of 



Comparison. 



Parallax 



of 

 61 * Cygni. 



Probable 



error 



r 



Authority. 



Ref. 

 No. 



2 



6 



Absolute 



+o. / 349 



±0.080 



Peters 



AS 



38°435i 



•4654 



.0497 



Ball 



8 



AS 



38°435i 



.400 



.055 



Ramb.Ball 



15 



a 



Absolute ( ? ) 



•50 



.094 



Belopolsky 



10 



Aa 





.21 



•03 



Flint 



16 



Photography 



Ten Stars 



•30 



.031 



Kapteyn 



17 



Distance. 



Photography 



37°4i89 



[+0.4294] 



±0.0162 



Pritchard 



12 



<( 



38°4336 



[ .4414] 



.0222 



Pritchard 



12 



(< 



37°4i75 



[ -4448] 



.0212 



Pritchard 



12 



ii 



38°4348 



[ -4I93] 



.0182 



Pritchard 



12 



Photography 



38°4372— 37=4159 



• 52" 



•0373 



Davis 



13 



11 



38°4353— 37°4i59 



•4497 



.0429 



Davis 



13 



1 < 



3 8°4325-38 4362 



•3733 



.0400 



Davis 



13 



(< 



3 8°4363— 38°4325 



•2431 



.0409 



Davis 



13 



<« 



37°4i89-38°4336 



.3888 



.0658 



Davis 



13 



Photography 



37°4i8 9 



•405 



.026 



Wilsing 



14 



Position Angle. 



Photography 



37°4i8o 



-f-O.3028 



±o'o354 



Davis 



13 





37°4i75 



•3779 



•0395 



Davis 



13 





37°4i89 



.2794 



•0473 



Davis 



13 





37°4i85 



.3299 



•0557 



Davis 



13 





37°4i78 



•3442 



.0620 



Davis 



13 





38°434i 



•3334 



• 0743 



Davis 



13 





38°4335 



.4401 



.0819 



Davis 



13 



