264 



Prsesepe Group; Measurement and Reduction 



Star 32. 





Right Ascension : 



Declination : 



Plate. 

















At Epoch of 



P. M. 



At Epoch 



At Epoch of 



P. M. 



At Epoch 





Plate. 





1875.0. 



Plate. 





1875.0. 



I 



i28°20 / 56 // .93 



—o".28 



56". 65 



i9 38'o6".2o 



+o".03 



6". 23 



II 



57 .02 



— .28 



•74 



•35 



+ -03 



•38 



III 



56 .98 



— .28 



.70 



• 17 



+ .03 



.20 



IV 



57 -20 



— .28 



.92 



•05 



+ -03 



.08 



V 



56 .51 



+ .14 



.65 



.28 



— .02 



.26 



VII 



56 .6r 



+ .14 



•75 



.27 



— .02 



• 25 



VIII 



56 .71 



+ .14 



.85 



.11 



— ■ .02 



.09 



IX 



56 .64 



+ -14 



• 78 



•32 



— .02 



•30 



Mean, i28°2o / 56 // .76 



Mean, ig°38/o6 // .22 



Probable Error, ±.026 



Probable Error, 



±.028 



Proper Motion, — 0.059 J-0.007 



Proper Motion, +0.005 



' ±0.008 



Star 33. 





Right Ascension : 



Declination : 



Plate. 















At Epoch of 



P. M. 



At Epoch 



At Epoch of 



P. M 



At Epoch 





Plate. 





1875.0. 



Plate. 





1875.0. 



I 



I28°22 / 30 // .50 



— o".34 



2,o' '.id 



i9°4o / o9 // .34 



+o // .o4 



9 ". 3 8 



II 



30 -37 



— -34 



30 -03 



•57 



+ -04 



.61 



III 



30 .14 



— -34 



29 .80 



•34 



+ .04 



•38 



IV 



30 -53 



— -34 



30 .19 



•32 



+ .04 



.36 



VII 



29 .92 



+ .17 



30 .09 



•50 



— .02 



.48 



VIII 



30 .02 



+ .17 



30 .19 



.29 



— ■ .02 



.27 



IX 



29 .71 



+ -17 



29 .88 



•57 



— .02 



•55 



Mean, i28°22 / 30 // .o5 



Mean, i9°4o 



'09". 43 



Probable Error, ±.048 



Probable Error, 



±.037 



Proper Motion, — 0.072 ±0.013 



Proper Motion, +0.00 



9 ±0.010 



