290 



THE SAYRE OBSERVATORY. 





Catalogue. 



r 



i 



No 

 Obs. 



l»" 



n 



p 



P i 



pn 



T 



pT 



pT' 



p'Pn 



V 



1 



Bradley 



1755 



53.2 



6 



+.068 



+0.03 



.6 



— 28.7 



+ .018 



—1.05 



— .630 



[ .888 



— .019 



— .28 



2 



Piazzi 



1800 



04.9 



7 





+0.24 



.3 



+ 1.5 



+ .072 



— .53 



— .159 



.084 



— .038 



+ .10 



3 



Lalande 



1800 









+1.77 



.0 



|- 0.0 



— .000 



— .58 



— .000 



.000 



— .000 



+1.62 



4 



Groombridge 



1810 



09.5 



6 





—0.82 



.6 



+ 5.7 



— .492 



— .48 



— .288 



.138 



+ .230 



— .94 



5 



Pond 



1830 



31.9 



20 





—0.13 



1.0 



+ 31.9 



— .130 



— .26 



— .260 



.068 



+ .034 



— .17 



6 



Taylor 



1835 





11 



+.02 



—0.51 



.5 



■[- 17.5 



— .255 



— .22 



— .110 



.024 



+ .050 



— .54 



7 



Rumlcer 



1830 





6 





+1.30 



.5 



f- 18.0 



+ .650 



— ,21 



— .105 



.022 



— .130 



+1.27 



8 



Edinburgh 



1840 



40.2 



3 





—0.02 



.3 



+ 12.1 



— .006 



— .17 



— .051 



.009 



+ .001 



—0.03 



9 



Armagh 



1840 



52.2 



5 





—0.48 



.5 



+ 26.1 



— .240 



— .05 



— .025 



.001 



+ .012 



— .46 



10 



Greenwich 



1840 



40.0 



21 





-[-0.66 



3.0 



+120.0 



+1.980 



— .18 



— .540 



.097 



— .856 



+ .64 



11 



0' Argelander 



1842 









+0.26 



.0 



+ 00.0 



— .000 



— .16 



— .000 



.000 



— .000 



-|- .25 



12 



Greenwich 



1845 



44.0 



32 



+.02 



1-0.24 



3.0 



[-132.0 



+ .720 



— .14 



— .420 



.059 



— .101 



+ .24 



13 



Radclilt'e 



1845 



46.8 



13 



+.06 



—0.87 



2.0 



f- 93.6 



—1.740 



— .11 



— .220 



.024 



+ .191 



— .86 



14 



Paris 



1845 



39.5 



6 





+0.41 



2.0 



+ 79.0 



+ .820 



— .18 



— .360 



.005 



— .148 



+ .39 



15 



Poulkova 



1855 



47.8 



5 



+.068 



—0.55 



2.0 



+ 95.6 



—1.100 



— .10 



— .200 



.020 



+ .110 



— .54 



16 



Greenwich 



1860 



59.5 



3 



[-.00 



0.05 



1.0 



+ 59.5 



+ .050 



+ .02 



+ .020 



.000 



+ .001 



+ .10 



17 



Yarn all 



I860 



59.7 



8 





+0.48 



1.5 



+ 89.6 



h .720 



+ .02 



f .030 



.001 



+ .014 



+ .53 



18 



PariB 



I860 



63.8 



13 





—0.81 



2.0 



-[-127.6 



—1.620 



.00 



|- .120 



.007 



— .097 



— .75 



19 



Brussels 



1865 



66.2 



4 





0.45 



1.0 



|- 66.2 



+ .450 



+ .09 



h .090 



.008 



+ .040 



+ .53 



20 



Ast. Gescllschaft, 



1875 



75.2 



2 





—0.26 



1.0 



+ 75.2 



— .260 



+ .18 



-|- .180 



.032 



— .047 



— .15 



21 



Paris 



1875 



81.2 



2 





—0.11 



1.0 



+ 81.2 



— .110 



+ .24 



+ .240 



.058 



— .020 



+ .02 



22 



Itcspighi 



1875 



76.1 



22 





—0.12 



1.5 



+114.2 



— .180 



-1- .19 



+ .285 



.054 



— .034 



— .01 



23 



Stockholm 



1875 



75.3 



1 





—0.26 



.3 



+ 23.6 



— .078 



f .18 



+ .054 



.010 



— .014 



— .10 



24 



MadraB 



1878.4 



78.0 



5 





+0.79 



1.5 



+117.9 



+1.185 



+ .21 



+ .315 



.066 



+ .249 



+ .91 



25 



Greenwich 



1880 



84.0 



7 



+.088 



—0.21 



2.0 



+168.0 



— .420 



+ .20 



+ .520 



.135 



— .109 



— .08 



26 



Kasan 



1885 





3 



+.068 



—0.23 



1.0 



+ 85.0 



— .230 



+ .28 



+ .280 



.078 



— .004 



— .09 



27 



Tucker 



1897 



97.0 



4 





—0.42 



3.0 



-1-291.0 



—1.260 



+ .40 



+1.200 



.480 



— .504 



— .24 

















:;:;. I 



1902.3 



—1.456 





— .034 



+2.202 



—0.749 



















Sp 



2pt 



2pn 





XpT 



2p 2' 2 



Iplh 





t a = at 3 = 57.5 



33.1 



Weighted mean date 1857.5 



1-456 == _ , /044 



A/J.' : 



33.1 

 0.749 



Xptf = 



+ 8.74 



~£pn 2 = 



1- 9.05 



(2pn) A(S 



— .06 



(Xpt?i) A/J,' 



— .25 



Check 



8.74 



2.202 



= — 0".34() 



A[x' is here the correction to the centennial proper motion. 



A 'W, = — 0".044 — (.0034 X (1875—1857.5)) = — 0".104 

 Assumed £ 54° 32' 11".15 



Pinal value 54° 32' 11".05 



Assumed //' = + 0.068 



Pinal value + 0.0646 



