266 



Prassepe Group; Measurement and Reduction 



Star 36. 





Eight 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°26'25".i8 



-o" : 45 



24"; 73 



20°22 / 35 // .73 



+o".i6 



35"-89 



II 



25 -14 



- -45 



.69 





67 



+ .16 



.83 



III 



25 .17 



— -44 



•73 





59 



+ .15 



• 74 



IV 



25 .40 



— .44 



.96 





63 



+ .15 



.78 



VII 



24 -59 



+ .22 



.81 





Q6 



— .08 



.88 



VIII 



24 -54 



+ -22 



.76 





78 



— .08 



.70 



IX 



24 -54 



+ .22 



.76 





92 



— .08 



.84 



Mean, i28°26 / 24".78 



Mean, 2o°22 / 35 // .8i 



Probable Error, ±.028 



Probable Error, ±.022 



Proper Motion, —0.095 +0.007 



Proper Motion, +0.033 ±0.006 



Star 37. 





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 



l28°26 / 3i // .8i 



— o".28 



3i // -53 



2o°oi'i9".38 



+o".Q5 



i9"-43 



II 



.61 



— .28 



■33 



•56 



+ -05 



.61 



III 



.50 



— .28 



.22 



•3i 



+ .05 



.36 



IV 



.89 



— .28 



.61 



.28 



+ .05 



•33 



V 



.28 



+ .14 



.42 



• 42 



— .02 



.40 



VII 



•29 



+ -14 



•43 



•34 \ — -03 



•3i 



VIII 



•32 



+ .14 



.46 



.49 ; — .03 



.46 



IX 



• 27 



+ -14 



.41 



.58!— .03 



1 



•55 



Mean, 



i28°26 / 3i // .43 



Mean, 20°oi'i9".43 



Probable Error, 



±.032 



Probable Error, ±.029 



Proper Motion, 



— 0.059 ±0.006 



Proper Motion, +0.011 ±0.008 



