Author Topic: Star Spectral Classes for SF GMs and Players  (Read 1137 times)

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Offline arakish

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Star Spectral Classes for SF GMs and Players
« on: July 14, 2011, 10:20:46 PM »
While working on my Stellar System Generator program, I found several science and university sites that listed the percentages for the Spectral Class of stars.  I averaged them out and converted them into integer values.  To do so, due to the small number of O class stars, I had to use 10,000,000 stars as the base.  With 10,000,000 stars, below lists the number of each spectral class.

Spectral
Class        Number
M             7,654,172
K             1,211,452
G             760,912
F             300,360
A             60,072
B             13,023
O             9

WOW!!  Out of 10,000,000 stars, only 9 would be O class stars!  And 3 out of 4 stars will be M class!

However, as a GM you would still control what type of star you want for a system.  I thought y'all might like to know what the actual probabilities were for each spectral class.  The above will be accounted for in my SSG program.

rmfr
"Beware those who would deny you access to information, for they already dream themselves your master."
— RMF Runyan in Sci-Fi RPG session (GM); quoted from the PC game SMAC.

Offline markc

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Re: Star Spectral Classes for SF GMs and Players
« Reply #1 on: July 15, 2011, 08:56:00 AM »
Nice info, I guess data about stellar spectral class info is changing and thus the change in the %.
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Offline RandalThor

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Re: Star Spectral Classes for SF GMs and Players
« Reply #2 on: July 15, 2011, 10:37:36 AM »
Have a good idea point!
Power corrupts, and absolute power corrupts absolutely. Scratch that. Power attracts the corruptible.

Rules should not replace the brain and thinking.