Star System Creation Sheets

[nerdvana]

Has anyone out there created an excel sheet that handles the creation of star systems? (Both from a create a concept planet first or from star creation though totally randomly)

[Fnordianslip]

Originally Posted by nerdvana

Has anyone out there created an excel sheet that handles the creation of star systems? (Both from a create a concept planet first or from star creation though totally randomly)

Check out the Network section of the forums. Agemegos has put together a great excel sheet for system creation. I think his thread is under Game Aids, under the Network.

For your convenience, here.

http://forums.sjgames.com/showthread.php?t=32047

[dscheidt]

Originally Posted by Fnordianslip

Check out the Network section of the forums. Agemegos has put together a great excel sheet for system creation.

Which he's no longer making available, out of peeve with SJG not fixing the errata in Space.

[thtraveller]

Originally Posted by nerdvana

Has anyone out there created an excel sheet that handles the creation of star systems? (Both from a create a concept planet first or from star creation though totally randomly)

If it's just a planet then my online planet generator (just html and javascript) might be useful http://www.transhuman.talktalk.net/iw/Geosync.htm

[Imion]

I wrote a little Java application that randomly creates a system. I don't have any webspace available at the moment so PM me if you're interested.

EDIT: I just noticed that I already sent you the app. So what do you want? ;) Just a spreadsheet to fill in your own (random) numbers?

[elustran]

Originally Posted by Imion

I wrote a little Java application that randomly creates a system. I don't have any webspace available at the moment so PM me if you're interested.

EDIT: I just noticed that I already sent you the app. So what do you want? ;) Just a spreadsheet to fill in your own (random) numbers?

I got your app too - it's pretty cool, but it also makes me think of various things that could be added to it... ways of tweaking it to make it output what you want, such as options for shifting orbits and modifying atmosphere while simultaneously recalculating surface temperature. Of course, if something doesn't quite fit, you can just rewrite what it says in the text-dump, but, damn, it would be useful to have the calculations automated.

[Imion]

I'm always open for suggestions and comments, but since this is my first try at Java and I don't have that much time to put into the program, improvements and additional features are added very, very slowly. At the moment I'm working on having the app generate Binaries, but alas I have no idea when it will be finished.

[Agemegos]

Originally Posted by nerdvana

Has anyone out there created an excel sheet that handles the creation of star systems? (Both from a create a concept planet first or from star creation though totally randomly)

I have. But it has a couple of little problems.

1. It doesn't place moons according to RAW, but using an algorithm that I designed myself, which puts the moons a bit further away on average, and spaced like planets.
2. It doesn't calculate tides or tidal braking according to the RAW, but according to formulas that are consonant with the physics.
3. It doesn't do rotation rates according to the RAW, but according to a simpler method that is (I believe) more consistent with the physics.
4. I m not giving it away any more.

[Anaraxes]

Are you planning to sell (some of) these things?

[Agemegos]

Originally Posted by Anaraxes

Are you planning to sell (some of) these things?

Me? No. I can't. It embodies the GURPS Space star system generation sequence rules, which are copyright to Steve Jackson Games.