The Rutherfurd Photographic Measures. 



127 



Table XV. — Results. 

 From Measures op Distance. 



Comp. 



Stars. 



Relative 

 Parallax 

 i of 

 61 * Cygni 



"Weights. 



Probable Error. 



Relative 



Weights. 



1 



P (p) 



»i 



r w 



C*v) 



ir„) 2 



64- 6 

 39" 6 



// 

 + 0.5211 



+ 0.4497 



26. 2675 17.5117 

 19.8822 13.2548 



±0. 1641 

 .2562 



// 

 ±0.0373 



.0429 



±0.0457 

 •0525 



479-3 

 362.7 



5-53 

 54- 5 



+ 0.3733 22.8220 15.2147 ± .2020 

 + 0.2431 21.8784 14.5856 1 -1576 



+ 0.0400 ±0.0490 

 .0409 .0500 



416.3 

 399-2 



48-14 



+ 0.3888 8.4314 8.4314+ .1840 



±0.0658 ±0.0658 



230.7 



Results 



+ 0.3999 





68.99821+0.1912 



± O.023O 



! 



1888.2 



From Measures or Position-Angle. 





Relative Weights. Probable Error. 



Relative 



Comp. 



Parallax 



Weight. 



Stars. 



of 











1 





61 l Cygni 



P 



a 2 



(rj) 



?i 



r-n- 



r 2 





// 







// 



// 



// 





37 



+ 0.3028 196 129.40 



2278. 



±15.70 



±0. 1018 



±0.0354 



796.9 



27 



+ o-3779 *57 834.62 



1471. 



29.27 



•1525 



•°395 



64I.2 



48 



+ 0.2794 no 142.84 



2580. 



25-49 



•1758 



•0473 



447-5 



43 



+ 0.3299 79259.74 



4245- 



18.52 



.1638 



•0557 



322.0 



32 



+ 0.3442 63960.30 



5921. 



12.37 



.1293 



.0620 



259-9 



23 



+ 0-3334 44 572.46 



7968. 12.33 



.1496 



•0743 



181. 



J 3 



+ 0.4401 36689.52 



9667. ±12.32 



±0.1646 



±0.0819 



149.0 



Results 



+ 0.3326 688 588.88 







±o.'i488 



±0.0189 



2797-5 



