154 
THE MASS-LUMINOSITY RELATION 
Table 17. 
Ordinary Binary Stars—First Class Determinations. 
Star 
Type 
Te 
Parallax 
Mass 
TO (vis.) 
to (bol.) 
to (calc.) 
O-C 
Capella, b 
G 0 
' 5200 
// 
•063 
4-18 
m 
- 0-26 
m 
- 0-36 
m 
- 0-34 
m 
- -02 
» / 
F 0 
7400 
— 
3-32 
0-24 
0-22 
0-02 
+ -20 
Sirius, b 
A 0 
10500 
•373 
2-45 
1-28 
0-97 
0-67 
+ -30 
a Centauri, b 
G 5 
5000 
•748 
1-14 
4-70 
4-53 
4-16 
+ -37 
f 
K 5 
3700 
— 
0-97 
6-07 
5-24 
5-09 
+ -15 
Sun 
GO 
5740 
1-00 
4-9 
4-85 
4-56 
+ -29 
Krueger 60, b 
Ma 
3100 
•260 
0-27 
11-35 
9-82 
11-07 \ 
- 1-24 
» f 
Ma 
3100 
— 
0-16 
13-85 
12-32 
13-55 J 
Table 18. 
Ordinary Binary Stars—Second Class Determinations. 
Star 
Type 
T e 
Parallax 
Mass 
TO (vis.) 
to (bol.) 
to (calc.) 
O-C 
// 
m 
m 
m 
m 
e Hydrae, b 
F 9 
5500 
•0206 
3-64 
0-27 
0-22 
0-00 ) 
+ 0-24 
. >> f 
5500 
— 
2-29 
1-77 
1-72 
1-46 j 
/3 Aurigae, b 
A 0 p 
10500 
•025 
2-38 
- 0-19 
- 0-50 
0-77 
- 1-27 
” f 
A Op 
10500 
— 
2-34 
- 0-19 
- 0-50 
0-82 
- 1-32 
Procyon, b 
F 5 
6800 
•308 
113 
2-92 
2-92 
3-92 
- 1-00 
S Equulei, b 
F 5 
6800 
•067 
1-01 
4-43 
4-43 
4-39 
+ 0-04 
» / 
F 5 
6800 
— 
1-00 
4-53 
4-53 
4-43 
+ 0-10 
y Cassiop., b 
F 8 
6200 
•184 
0-72 
4-99 
4-99 
5-93 \ 
- 0-94 
f 
K 5 
3800 
— 
0-41 
8-73 
7-99 
8-93 J 
£ Herculis, b 
G 0 
5700 
•109 
1-09 
3-23 
3-20 
4-22 \ 
- 1-06 
f 
5000 
— 
0-51 
6-73 
6-56 
7-65 J 
70 Ophiuchi, b 
K 0 
4400 
•189 
1-05 
5-66 
5-27 
4-61 \ 
+ 0-66 
f 
K 4 
3900 
— 
0-77 
7-36 
6-71 
6-04 J 
£ Bootis, b 
G 6 
4900 
•164 
0-62 
5-87 
5-69 
j 
- 1-08 
» / 
K 4 
3900 
— 
0-47 
7-89 
7-24 
8-27 J 
85 Pegasi, b 
G 0 
5800 
•095 
0-62 
5-75 
5-73 
6-66 ^ 
- 0-90 
» f 
3200 
— 
0-31 
10-95 
9-52 
10-38 J 
/j, Herculis, b 
M b 
3100 
•110 
0-46 
10-42 
8-86 
8-57 \ 
+ 0-33 
f 
Mb 
3100 
— 
0-42 
10-92 
9-36 
8-99 J 
o 2 Eridani, b 
B 9 
11000 
•202 
0-21 
11-27 
10-88 
1115 
(- 0-27) 
f 
M d 
2900 
— 
0-20 
12-67 
10-81 
12-53 
- 1-72