Random Generators
Here are a bunch of random generators for all kinds of things like Dungeons & Dragons, World of Warcraft, and even some silly stuff, like Survivor.
Star System Generator
PLEASE NOTE: The sheer amount of information here makes it impossible to format the system generator for small screens. Please use this on a medium or higher screen for best display results.
I've been involved in star system generation code for quite a while. There was one in particular that offered everything I needed: Aina's Star Generator.
Unfortunately Aina stopped updating the code over twenty years ago and can no longer be reached. He published his code base online back in the day so others could use and improve it.
Here we are in the here and now. I've updated his code to work with php and have made quite a number of modifications. The goal is to make a few tweaks here and there and test out the random generator in a gravity simulator like Universe Sandbox 2 to see just how viable these star systems are.
temperatures: planet temperatures are seriously out of whack. I've left them in until I can figure out the problem.
System Summary
| orbit | description | mass | radius | ecc | inc | moons |
|---|---|---|---|---|---|---|
| primary | G1V : Yellow Dwarf (M-S) | 1.0248 sol | 2.036 sol | |||
| 1.095 au | Desert | 0.68442 earth | 5,618 km | 0.0 | 9° | 2 |
| 3.4 au | K0V : Orange Dwarf (M-S) | 0.8378 sol | 1.760 sol | 0.002 | 10° | |
| 0.450 au | Hot House | 1.78876 earth | 7,091 km | 0.01 | 3° | 0 |
| 0.855 au | Ice Ball | 0.12102 earth | 6,794 km | 0.03 | 0° | 2 |
| 6.1 au | G1V : Yellow Dwarf (M-S) | 1.0369 sol | 2.053 sol | 0.015 | 11° | |
| 1.018 au | Steppe | 1.16172 earth | 7,219 km | 0.01 | 1° | 4 |
| 1.2 au | G4V : Yellow Dwarf (M-S) | 0.9634 sol | 1.947 sol | 0.001 | 4° | |
| No planets | ||||||
Full System Details
Star 1: G1 V Yellow Dwarf (M-S)
| Mass | 1.0248 sol |
| Diameter | 2.036 sol |
| Temp | 5,869°K (Lux: 1.1030 sol) |
| Age | 4,724.097 Myears (MAX: 9,291.432 Myears) |
| Orbits | min: 0.105 AU inner max: 0.861 AU life max: 1.260 AU max: 1.133 AU |
| Planet 1 - Life Zone - Desert - Rocky | |
| Orbit | dist: 1.095 AU period: 346.01 earth days Ecc: 0.0 Inc: 9° |
| Body | rad: 5618 km mass: 0.684 earth grav: 0.882 earth rot: 8,304.244 hours tilt: 17° |
| Temperatures | avg: 719.163°C day: 726.905°C night: 611.289°C |
| Water Type: | Ice - 12.25% |
| Atmosphere | type: Thin pres: 0.428 atm comp: Carbon Dioxide oxyg: 0 |
| Mineral Resources | Metal Ore: 65.18 Radioactive Ore: 20.18 Precious Metals: 4.18 Raw Crystals: 25.236 Precious Gems: 4.18 |
| Moons | |
| Moon 0: | core: Rocky orbit: 44944 km incline: 4° ecc: 0.03 radius: 1939.5 km mass: 0.014080503353542 earth tilt: 30° |
| Moon 1: | core: Rocky orbit: 67416 km incline: 1° ecc: 0.05 radius: 500 km mass: 0.00053073963615751 earth tilt: 40° |
Star 2: K0 V Orange Dwarf (M-S)
| Mass | 0.8378 sol |
| Diameter | 1.760 sol |
| Temp | 5,160°K (Lux: 0.4927 sol) |
| Age | 14,208.581 Myears (MAX: 17,005.090 Myears) |
| Orbits | min: 0.070 AU inner max: 0.576 AU life max: 0.842 AU max: 1.133 AU |
| Primary Distance | 3.400 AU |
| Planet 1 - Inner Zone - Hot House - Rocky | |
| Orbit | dist: 0.450 AU period: 147.46 earth days Ecc: 0.01 Inc: 3° |
| Body | rad: 7090.5 km mass: 1.789 earth grav: 1.447 earth rot: 3,538.959 hours tilt: 22° |
| Temperatures | avg: 1,025.149°C day: 1,025.544°C night: 205.030°C |
| Water Type: | None - % |
| Atmosphere | type: Massive pres: 147.577 atm comp: Carbon Dioxide oxyg: 0 |
| Mineral Resources | Metal Ore: 56.1765 Radioactive Ore: 43.6353 Precious Metals: 15.8353 Raw Crystals: 34.2353 Precious Gems: 14.6353 |
| Characteristics | High Radiation Levels Unstable Climate |
| Planet 2 - Outer Zone - Ice Ball - Icy | |
| Orbit | dist: 0.855 AU period: 100.45 earth days Ecc: 0.03 Inc: 0° |
| Body | rad: 6793.5 km mass: 0.121 earth grav: 0.107 earth rot: 2,410.790 hours tilt: 22° |
| Temperatures | avg: 780.293°C day: 794.616°C night: 741.279°C |
| Water Type: | Ice - 28% |
| Atmosphere | type: Vacuum pres: 0.000 atm comp: None oxyg: 0 |
| Mineral Resources | Metal Ore: 1 Radioactive Ore: 1 Precious Metals: 1 Raw Crystals: 1 Precious Gems: 1 |
| Moons | |
| Moon 0: | core: Icy orbit: 67935 km incline: 4° ecc: 0.03 radius: 2923.5 km mass: 0.019289373143973 earth tilt: 28° |
| Moon 1: | core: Icy orbit: 407610 km incline: 6° ecc: 0.03 radius: 500 km mass: 4.8249057832501E-5 earth tilt: 6° |
Star 3: G1 V Yellow Dwarf (M-S)
| Mass | 1.0369 sol |
| Diameter | 2.053 sol |
| Temp | 5,913°K (Lux: 1.1560 sol) |
| Age | 2,203.136 Myears (MAX: 8,969.937 Myears) |
| Orbits | min: 0.108 AU inner max: 0.882 AU life max: 1.290 AU max: 2.033 AU |
| Primary Distance | 6.100 AU |
| Planet 1 - Life Zone - Steppe - Rocky | |
| Orbit | dist: 1.018 AU period: 403.79 earth days Ecc: 0.01 Inc: 1° |
| Body | rad: 7219 km mass: 1.162 earth grav: 0.906 earth rot: 9,690.943 hours tilt: 24° |
| Temperatures | avg: 804.593°C day: 809.469°C night: 563.215°C |
| Water Type: | Oceans - 34% |
| Atmosphere | type: Standard pres: 0.916 atm comp: Nitrogen/Oxygen oxyg: 0.12690941334181 |
| Mineral Resources | Metal Ore: 62.752 Radioactive Ore: 3.752 Precious Metals: 7.752 Raw Crystals: 24.3504 Precious Gems: 1 |
| Characteristics | High Humidity Life-Forms: Semi-Intelligent |
| Moons | |
| Moon 0: | core: Rocky orbit: 288760 km incline: 4° ecc: 0.04 radius: 2335.5 km mass: 0.039337651279487 earth tilt: 15° |
| Moon 1: | core: Rocky orbit: 216570 km incline: 8° ecc: 0.54 radius: 856 km mass: 0.00096841188236166 earth tilt: 19° |
| Moon 2: | core: Rocky orbit: 360950 km incline: 16° ecc: 0.03 radius: 1747.5 km mass: 0.010299126247691 earth tilt: 30° |
| Moon 3: | core: Rocky orbit: 794090 km incline: 10° ecc: 0.01 radius: 1084 km mass: 0.0024583101548825 earth tilt: 32° |
Star 4: G4 V Yellow Dwarf (M-S)
| Mass | 0.9634 sol |
| Diameter | 1.947 sol |
| Temp | 5,641°K (Lux: 0.8614 sol) |
| Age | 1,545.357 Myears (MAX: 11,183.560 Myears) |
| Orbits | min: 0.093 AU inner max: 0.761 AU life max: 1.114 AU max: 0.400 AU |
| Primary Distance | 1.200 AU |