1903.] DOOLIZ TLE—ORBIT OF DOUBLE STAR 2 518. "75 
P = 180,084 years | 
Ti) NOA 2.7.2 | 
é= 0.129 | 
= 61.78 , Elements of the 
8 First Approximation. 
Q = 148.76 
° 
A ==)321.22 | 
df 
a = 4.681 J 
‘For the purpose of effecting a least square solution, twelve 
normal places were next formed from the observations of the pre- 
ceding table, as follows : 
4 
Date. é. Ai ed p. n 
° ° 4] 
1852.48 156.89 157.13 3.95 9-8 
1857.31 152.95 153-17 4.45 2 
1867.95 143.54 143-70 4.42 7-6 
1874.83 134.55 134.67 4.12 4 
1879.03 124.89 124.99 3.56 31 
1882.54 118.35 118.44 2537 13 
1887.71 108.53 108.59 2.93 31 
1891.13 99.01 99.05 2.46 18 
1894.06 90.60 90.62 2.25 2 
1898.54. 75.81 75.82 2.50 5 
1899.80 68.35 68.35 2.30 3 
1900.92 63.41 63.41 2.40 2 
From these there resulted twelve equations between the six 
unknown quantities, the residuals in angle only being employed. 
These equations were weighted and solved for the corrections to 
the elements, the results being as follows: 
P = 180.039 years. } 
Le GAG 22 | 
é = 0.133 | 
ene 62.96 \ Elements of the 
2 | Second Approximation. 
Q = 150.01 
° 
A = 320.24 | 
41 
a= 4.681 J 
