Stellar Radii


Spectral Class Ia Ib II III IV V VI VII
B0 52 30 22 16 13 10 - -
B5 75 35 20 10 5.3 4.4 - -
A0 135 50 18 6.2 4.5 3.2 - -
A5 149 55 14 4.6 2.7 1.8 - -
F0 174 59 16 4.7 2.7 1.7 - -
F5 204 60 18 5.2 2.6 1.4 1.14 -
G0 298 84 25 7.1 2.5 1.03 1.02 -
G5 454 128 37 11 2.8 .91 .55 -
K0 654 216 54 16 3.3 .908 .4 -
K5 1010 392 124 42 - .566 .308 -
M0 1467 857 237 63 - .549 .256 -
M5 3020 2073 712 228 - .358 .104 -
M9 3499 2876 931 360 - .201 .053 -
DB
-
-
-
-
-
-
-
.018
DA
-
-
-
-
-
-
-
.017
DF
-
-
-
-
-
-
-
.013
DG
-
-
-
-
-
-
-
.012
DK
-
-
-
-
-
-
-
.009
DM
-
-
-
-
-
-
-
.006
1=695732 km
                         


Orbit No.
AU
Orbit Radius Mkm.
Solar Radii
Formula for Orbital Period and Distance

P=(D3/M).5
D=(MP2).33


Units
P=Period in years (365.25 days)
     Period in lunar months (28 days)
M=Mass in Solar masses
       Combined Earth-moon masses
D=Distance in AU (149.6Mkm)
      Distance in Earth-moon distance (400000km)

0
.2
29.9 40
1
.4
59.8
80
2
.7
104.7 140
3
1
149.6 200
4
1.6
239.3 320
5
2.8
418.9 560
6
5.2
777.9 1040
7
10
1495.5 2000
8
19.6
2932 3920
9
38.8
5804 7760
10
77.2
11548 15440
11
154
23038
30800
12
307.6
46016 61520
13
614.8
91972
123498
14
1229.2
183885
245836
15
2458
367711
491594
16
4915.6
735363
983106
17
9830.8
1470670
1966132
18
19661.2
2941270 3932184
19
39322
5882490
7864290


©2006, Alan Spik, The brother of a genius! Insert amusing phrase!
Taken from Book 6, Scouts GDW