4e52 



MEMOIRS OF THE AMERICAN ACADEMY. 



Computations for the Error of the Clock and for Instrumental Correcti 



January 3, 1873. 



Hur. 



Ump. 



(«o) 



H Piscina 



u I'imrium 



(I Arietfo 



50 < !>. 



w. 



\\\ 

 w. 



m 



1 57 - 

 1 7.60 



1 57.76 



1 59.527 



A 



5 lire. M. (L. (•) K. 1 54.3-1 



r < eti 



lira. M. (I* C) 



{ Arietta 



K. 1 57.570 



ij I iri 



J Persei 

 a Camelop. 



I A ii rig 



I I Orioni9 



« Awrigas 

 fl Ononis 



(I Tauri 



Groomb. 966 

 d Orionta 

 a Le porta 



r < Irionis 



oi Draco. (L. C.) 



I 

 1 

 E. 



a Per-.-i 



vMIiv M. (L. C.)| E. 



K. 



E. 



E. 



E. 



E. 



W. 



\V. 



W. 



W. 

 W. 

 W. 



W. 



1 55.197 

 I ;.7.676 

 1 57.887 

 1 55.18" 

 1 57.922 



1 57.781 

 1 57.907 



1 58.629 



1 57.735 



1 57.753 



1 57.943 



1 57.570 



W. 1 57.982 

 W. 1 59.72 2 



l 57.590 



1 57.319 



1 57.586 



1 55.620 



.481 



.403 

 1.572 



3.697 



.639 

 3.371 

 .397 

 .188 

 2.988 

 .128 

 .350 

 .223 

 .994 

 .195 

 .473 

 .087 

 .783 

 .273 

 2.074 



.67 I 



.913 

 .691 



2.580 



+14.757 



M 



.0 1 2 

 .291 

 .134 

 1.627 

 3.558 

 .330 

 2.70: ; 



.224 

 .013 



2.720 

 .022 

 .119 

 .007 

 .929 

 .165 

 .147 

 .043 

 .330 

 .082 



1.822 

 .310 

 .581 

 .314 



2.280 



9.699 



A 2 



.231 



.318 



.162 



2.470 



13.669 

 .409 



11.361 



.157 

 .035 



8.927 

 .016 

 .122 

 .049 

 .989 

 .038 

 .224 

 .006 

 .612 

 .075 



4.300 

 .461 

 .833 

 .477 



6.656 

 -f52.610 



(Aa o) 



.006 

 .164 

 .058 



2.558 



13.134 



.211 

 9.112 



— .149 

 + .002 

 8.127 

 .003 

 .042 



+ .002 



.923 

 .032 

 .070 

 .004 

 .026 

 -|- .022 



3.779 

 .210 

 .530 

 .217 



5.884 

 45.445 



Ace 



AT, 



.436 

 .511 

 .366 



1.425 



3.352 

 .580 



3.057 

 .261 

 .171 



2.710 

 .115 

 .317 

 .201 

 .900 

 .176 

 .429 

 .078 

 .709 

 .248 



1.821 

 .615 

 .828 

 .626 



2.340 



m 



s 



Residuals. (Residuals)? 



1 58.324 

 1 58.120 

 1 58.132 

 1 58.102 

 1 57.695 

 1 58.150 

 1 58.254 

 1 57.937 

 1 57.716 

 1 57.890 

 1 57.807 

 1 58.098 

 1 58.108 

 1 57.929 

 1 57.911 

 1 58.182 

 1 57.865 

 1 58.279 

 1 58.230 



1 57.901 



1 58.205 



1 58.147 



1 58.212 



1 57.969 



.275 

 .071 

 .083 

 .053 

 .354 

 .101 

 .185 

 .112 

 .333 

 .159 

 .242 

 .049 

 .059 

 .120 

 .138 

 .133 

 .184 

 .230 

 .181 

 .148 

 .156 

 .098 

 .163 

 ,080 



.076 

 .005 



.007 

 .003 

 .125 

 .010 

 .034 

 .013 

 .111 

 .025 

 .059 

 .002 

 .003 

 .001 

 .019 

 .018 

 .034 

 .053 

 .033 

 .022 

 .024 

 .010 

 .027 

 .006 



Collimation Constant. 



Star. 



t 



I 



Lamp 



2 Cc 



c 



% Cassiopeaj 20™ 22'.290 West +1.200 +.236 



20 23.490 East 



t e 



t 



w 



C 



w 



I 



W 



t 



W 



w 



2 G 



2 Oc 



Hourly rate of clock 



0».007 



Normal Equations for the weight of A 6. 



J0 + .616 a 



1 



11.757 J0 + 52.610a 

 p (or weight of A 6) 



(Residuals) 3 



22 

 .6745 



r 



o 



SlP 





 



6.41 



.181 



• 



.122 



.043 



Normal Equations. 



2 A 6 + sAa-\- 2<0 O 

 UA6+ 14.757 a — 9.699 



A6-\- .616a 



.404 



2AA6 + 2A 2 a+ 2 A W 

 14.757 A 6 + 52.610 a — 45.445 



14.757 A6+ 9.076a 



43.534 a 



a 



5.965 

 39.480 

 + .907 



The probable error of A 6 and of A T is ± g .043. 







| 









 

 







a 



A6 



A T 







T« 



+ .907 

 .150 



l m 58'.050 

 l m 57V900 



3 h 30 



m 



