Properties of Stars
(adapted from Allen, Astrophysical
Quantities, 3rd. ed 1973)
Main Sequence Luminosity Class V
|
Spectral Class
|
R/Rsun
|
M/Msun
|
T eff
|
Mv
|
B-V
|
U-B
|
|
O5
|
18
|
40
|
40000
|
-5.8
|
-0.35
|
-1.15
|
|
B0
|
7.4
|
18
|
28000
|
-4.1
|
-0.31
|
-1.06
|
|
B5
|
3.8
|
6.5
|
15000
|
-1.1
|
-0.16
|
-0.55
|
|
A0
|
2.5
|
3.2
|
9900
|
0.7
|
0
|
-0.02
|
|
A5
|
1.7
|
2.1
|
8500
|
2
|
0.13
|
0.1
|
|
F0
|
1.3
|
1.7
|
7400
|
2.6
|
0.27
|
0.07
|
|
F5
|
1.2
|
1.3
|
6580
|
3.4
|
0.42
|
0.03
|
|
G0
|
1.1
|
1.1
|
6030
|
4.4
|
0.58
|
0.05
|
|
G5
|
0.93
|
0.93
|
5520
|
5.1
|
0.7
|
0.19
|
|
K0
|
0.85
|
0.78
|
4900
|
5.9
|
0.89
|
0.47
|
|
K5
|
0.74
|
0.7
|
4130
|
7.3
|
1.18
|
1.1
|
|
M0
|
0.63
|
0.45
|
3480
|
9
|
1.45
|
1.28
|
|
M5
|
0.32
|
0.21
|
2800
|
11.8
|
1.63
|
1.2
|
Giants Luminosity Class III
| Spectral Class |
R/Rsun |
M/Msun |
T eff |
Mv |
B-V |
U-B
|
|
G0
|
6.3
|
2.5
|
5600
|
1.1
|
0.65
|
0.3
|
|
G5
|
10
|
3.2
|
5000
|
0.7
|
0.85
|
0.53
|
|
K0
|
16
|
4
|
4500
|
0.5
|
1.07
|
0.9
|
|
K5
|
25
|
5
|
3800
|
-0.2
|
1.41
|
1.5
|
|
M0
|
*
|
6.3
|
3200
|
-0.4
|
1.6
|
1.8
|
|
M5
|
*
|
*
|
*
|
-0.8
|
1.85
|
2.3
|
Supergiants Luminosity Class I
|
Spectral Class
|
R/Rsun
|
M/Msun
|
T eff
|
Mv
|
B-V
|
U-B
|
|
B0
|
20
|
50
|
30000
|
-6.4
|
-0.25
|
-1.2
|
|
A0
|
40
|
16
|
12000
|
-6.2
|
0
|
-.03
|
|
F0
|
63
|
12
|
7000
|
-6
|
0.25
|
0.25
|
|
G0
|
100
|
10
|
5700
|
-6
|
0.7
|
0.6
|
|
G5
|
125
|
12
|
4850
|
-6
|
1.06
|
0.87
|
|
K0
|
200
|
13
|
4100
|
-5
|
1.39
|
1.34
|
|
K5
|
400
|
16
|
3500
|
-5
|
1.7
|
1.7
|
|
M0
|
500
|
16
|
*
|
-5
|
1.94
|
1.7
|
|
M5
|
* |
* |
* |
* |
2.14 |
* |