This is a fork of a version of stargen from https://github.com/sirus20x6/stargen
- Preset Mie Atmospheres.
- Fixed IC 3094 Spectral types.
- Earthlike generation around B and A stars. (Unrealistic, I know.)
- Port over whatever additional changes made by sirus20x6.
- Fix certain rotational parameters.
- Split albedos into BondAlbedo and GeomAlbedo.
- Add an export option to export planets to SpaceEngine .sc script.
- Fix distances of moons; they are currently based solely on hill spheres; making the innermost moons take 90 days to orbit a planet that is far from their sun(s).
- A typo I can't find is causing radius errors for certain planet masses, causing StarGen to quit. This will interfere with large batches of systems. Only solution is to start over. :(
git clone https://github.com/PlutonianEmpire/stargen.git
cd stargen
cmake ./CMakeLists.txt
cmake --build .
make -jx
where x is number of threads +1 to compile faster
Usage: stargen [options] [system name]
Options:
Seed values:
-s# Set random number seed [default: from time]
-i# Number to increment each random seed [default: 1]
-n# Specify number of systems [default: 1]
-A# set accretion dust density ratio_arg to # [default: 0.0]
-q# set accretion inner dust border to # [default: 0.3]
-Q# set accretion planetesimal seed eccentricity coefficient to # [default: 0.077]
Preset seeds:
-k Use known planets as planitesimal seeds [from internal tables]
-K Generate only known planets [from internal tables]
-x Use the Solar System's masses/orbits
-a Use the Solar System's masses/orbits varying Earth
Stars:
Please note that for a custom star, you need to specify a mass and/or a luminosity
as well as a spectral type and/or a temperature. Other wise the program will not work.
-m# Specify stellar mass # [fraction of Sun's mass] (optional if -y is used)
-y# Specify stellar luminosity # [fraction of Sun's luminosity] (optional if -m is used)
-Y# Specify minimum age for star (years) (optional)
-MY# Specify maximum age for star (years) (optional)
-b# The temperature of the star (optional if -B is used)
-B Spectral type of the star (optional if -b is used)
-CB Make this a circumbinary system like Tatoonine in Star Wars (optional)
-w# The mass of a companion star (optional and required if the -CB option is used)
-j# The luminosity of a companion star (optional and required if the -CB option is used)
-X# The temperature of a companion star (optional and required if the -CB option is used)
-N Spectral type of the companion star (optional and required if the -CB option is used)
-d# The distance to a companion star (optional and required if the -CB option is used)
-f# The eccentricity of the orbit of the companion star (optional and required if the -CB option is used)
For a predefined star:
-D Use all of Dole's 16 nearby stars
-D# Use Dole's system #
-F Use all 34 AU systems
-F# Use AU system #
-W Use all 78 nearby stars taken from the Web
-W# Use Web system #
-O Use all 307283 fictious stars in the fictious Omega Galaxy
-O# Use Omega Galaxy system #
-R Use all 60001 fictious stars in the fictious Ring Universe galaxy
-R# Use Ring Universe system #
-I Use all 5001 fictious stars in IC 3094 that cham generated
-I# Use IC 3094 system #
-U Use all 1001 fictious stars in the Andromeda Galaxy that cham generated
-U# Use Andromeda Galaxy system #
-G Use the 22 predefined stars from Star Trek
-G# Use Star Trek system #
-PHL Use the 41 predefined stars listed at the Planetary Habitability Library
-PHL#Use potentially habitable system #
-l List stars of selected table and exit
-L List stars of selected table as HTML and exit
Filters:
Please note that these options are only usefull if you are making
a large batch of systems and only want to save certain ones.
-E Only systems with earthlike planets
-H Only systems with habitable planets
-2 Only systems with 2 or more habitable planets
-3 Only systems with 3 or more habitable planets
-T Only systems with habitable planets more than 2 Earth Masses in size
-P Only systems with planets habitable by the Planetary Habitability Laboratory's criteria
-J Only systems with Jovian planets in habitable region
-g Include atmospheric gases
-v List verbosities [hex values] and exit
-v# Set output verbosity [hex value]
-V Use vector graphics [SVG] images [default: GIF]
-z Do numeric size check and exit
-Z Dump tables used for gases and exit
File specs:
-- use stdout
-o Name for the output file(s) [default: taken from star name]
-p Path for where the output file(s) are saved [default: ./html]
-u Internet URL path for/in the output file(s) [default: none]
Output formats: (only one is generated) default HTML to file
-c Celestia .ssc to stdout
-C Excel .csv [dl: no thumbnail html] to file
-JS JSON .json [dl: no thumbnail html] to file
-e Excel .csv to file
-S Vector graphics (SVG) to file
-t Text to stdout
-sn# Number of decimal places for numbers
Other:
-M Generate moons (highly experimental and incomplete)
-r Allow planet migration after forming. (highly experimental)
-ak Acknowledgement
-ex Examples