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 | G6V : Yellow Dwarf (M-S) | 0.9176 sol | 1.880 sol | |||
0.174 au | Hot House | 3.05985 earth | 11,661 km | 0.0 | 7° | 1 |
0.592 au | Hot House | 0.89363 earth | 6,615 km | 0.11 | 3° | 3 |
1.244 au | Ice Ball | 0.04460 earth | 3,377 km | 0.02 | 38° | 2 |
1.244 au | Desert | 0.81723 earth | 7,067 km | 0.01 | 10° | 0 |
1.617 au | Ice Ball | 0.04988 earth | 3,185 km | 0.0 | 0° | 3 |
1.779 au | Ice Ball | 0.02156 earth | 3,034 km | 0.04 | 13° | 4 |
5.336 au | Ice Ball | 0.05985 earth | 2,957 km | 0.04 | 5° | 1 |
8.537 au | Ice Ball | 0.23541 earth | 5,880 km | 0.02 | 9° | 5 |
29.027 au | Ice Ball | 0.00518 earth | 1,648 km | 0.0 | 0° | 4 |
Full System Details
Star 1: G6 V Yellow Dwarf (M-S)
Mass | 0.9176 sol |
Diameter | 1.880 sol |
Temp | 5,469°K (Lux: 0.7089 sol) |
Age | 2,391.199 Myears (MAX: 12,943.144 Myears) |
Orbits | min: 0.084 AU inner max: 0.690 AU life max: 1.010 AU max: 36.704 AU |
Planet 1 - Inner Zone - Hot House - Rocky | |
Orbit | dist: 0.174 AU period: 46.42 earth days Ecc: 0.0 Inc: 7° |
Body | rad: 11660.5 km mass: 3.060 earth grav: 0.915 earth rot: 1,114.096 hours tilt: 61° |
Temperatures | avg: 1,669.075°C day: 1,669.770°C night: 333.815°C |
Water Type: | None - % |
Atmosphere | type: Massive pres: 87.853 atm comp: Carbon Dioxide oxyg: 0 |
Mineral Resources | Metal Ore: 55.3025 Radioactive Ore: 16.3025 Precious Metals: 2.3025 Raw Crystals: 26.4605 Precious Gems: 7.3025 |
Characteristics | Extreme Axial Tilt Strong Magnetic Field |
Moons | |
Moon 0: | core: Rocky orbit: 1632470 km incline: 4° ecc: 0.01 radius: 3458.5 km mass: 0.079838463183485 earth tilt: 43° |
Planet 2 - Inner Zone - Hot House - Rocky | |
Orbit | dist: 0.592 AU period: 157.27 earth days Ecc: 0.11 Inc: 3° |
Body | rad: 6614.5 km mass: 0.894 earth grav: 0.831 earth rot: 3,026.480 hours tilt: 39° |
Temperatures | avg: 1,026.070°C day: 1,026.447°C night: 205.214°C |
Water Type: | None - % |
Atmosphere | type: Massive pres: 81.398 atm comp: Carbon Dioxide oxyg: 0 |
Mineral Resources | Metal Ore: 51.916 Radioactive Ore: 11.916 Precious Metals: 1 Raw Crystals: 28.1832 Precious Gems: 1.916 |
Characteristics | Cloud Cover Microbes Tidal Locked |
Moons | |
Moon 0: | core: Rocky orbit: 661450 km incline: 9° ecc: 0.03 radius: 500 km mass: 0.00033774340482751 earth tilt: 11° |
Moon 1: | core: Rocky orbit: 264580 km incline: 6° ecc: 0.02 radius: 1605 km mass: 0.019150723259593 earth tilt: 34° |
Moon 2: | core: Rocky orbit: 132290 km incline: 5° ecc: 0.02 radius: 500 km mass: 0.00053073963615751 earth tilt: 36° |
Planet 3 - Outer Zone - Ice Ball - Icy | |
Orbit | dist: 1.244 AU period: 106.92 earth days Ecc: 0.02 Inc: 38° |
Body | rad: 3377 km mass: 0.045 earth grav: 0.159 earth rot: 2,566.058 hours tilt: 40° |
Temperatures | avg: 607.739°C day: 614.244°C night: 516.578°C |
Water Type: | Ice - 40% |
Atmosphere | type: Thin pres: 0.081 atm comp: Carbon Dioxide 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: 236390 km incline: 0° ecc: 0.11 radius: 2163 km mass: 0.023436871178311 earth tilt: 51° |
Moon 1: | core: Icy orbit: 337700 km incline: 6° ecc: 0.02 radius: 2666.5 km mass: 0.029272753766135 earth tilt: 46° |
Planet 4 - Outer Zone - Desert - Rocky | |
Orbit | dist: 1.244 AU period: 457.70 earth days Ecc: 0.01 Inc: 10° |
Body | rad: 7066.5 km mass: 0.817 earth grav: 0.666 earth rot: 10,984.781 hours tilt: 21° |
Temperatures | avg: 617.470°C day: 623.975°C night: 524.849°C |
Water Type: | Ice - 10% |
Atmosphere | type: Thin pres: 0.356 atm comp: Carbon Dioxide oxyg: 0 |
Mineral Resources | Metal Ore: 29.399 Radioactive Ore: 1 Precious Metals: 1 Raw Crystals: 26.4798 Precious Gems: 1 |
Planet 5 - Outer Zone - Ice Ball - Icy | |
Orbit | dist: 1.617 AU period: 167.61 earth days Ecc: 0.0 Inc: 0° |
Body | rad: 3185 km mass: 0.050 earth grav: 0.200 earth rot: 4,022.707 hours tilt: 43° |
Temperatures | avg: 601.299°C day: 610.427°C night: 541.169°C |
Water Type: | Ice - 53% |
Atmosphere | type: Very Thin pres: 0.020 atm comp: Carbon Dioxide 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: 31850 km incline: 15° ecc: 0.01 radius: 782.5 km mass: 0.0003698808598365 earth tilt: 10° |
Moon 1: | core: Rocky orbit: 50960 km incline: 5° ecc: 0.04 radius: 1663.25 km mass: 0.0071041383720231 earth tilt: 18° |
Moon 2: | core: Icy orbit: 700700 km incline: 1° ecc: 0.05 radius: 2794 km mass: 0.033675807698913 earth tilt: 32° |
Planet 6 - Outer Zone - Ice Ball - Icy | |
Orbit | dist: 1.779 AU period: 127.13 earth days Ecc: 0.04 Inc: 13° |
Body | rad: 3034 km mass: 0.022 earth grav: 0.095 earth rot: 3,051.066 hours tilt: 9° |
Temperatures | avg: 593.438°C day: 604.316°C night: 563.766°C |
Water Type: | Ice - 20% |
Atmosphere | type: Vacuum pres: 0.000 atm comp: None oxyg: 0 |
Mineral Resources | Metal Ore: 16.068 Radioactive Ore: 1 Precious Metals: 1 Raw Crystals: 1 Precious Gems: 1 |
Moons | |
Moon 0: | core: Icy orbit: 121360 km incline: 8° ecc: 0.05 radius: 283.5 km mass: 1.7590087894884E-5 earth tilt: 42° |
Moon 1: | core: Icy orbit: 60680 km incline: 14° ecc: 0.04 radius: 1759 km mass: 0.0084030381240317 earth tilt: 34° |
Moon 2: | core: Rocky orbit: 48544 km incline: 6° ecc: 0.09 radius: 2801 km mass: 0.11027104823484 earth tilt: 22° |
Moon 3: | core: Icy orbit: 546120 km incline: 5° ecc: 0.04 radius: 1551 km mass: 0.007200857589068 earth tilt: 43° |
Planet 7 - Outer Zone - Ice Ball - Icy | |
Orbit | dist: 5.336 AU period: 1,100.59 earth days Ecc: 0.04 Inc: 5° |
Body | rad: 2956.5 km mass: 0.060 earth grav: 0.278 earth rot: 26,414.210 hours tilt: 15° |
Temperatures | avg: 289.148°C day: 292.289°C night: 245.776°C |
Water Type: | Ice - 59% |
Atmosphere | type: Thin pres: 0.143 atm comp: Carbon Dioxide 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: 47304 km incline: 6° ecc: 0.03 radius: 1023.5 km mass: 0.0024830966019119 earth tilt: 28° |
Planet 8 - Outer Zone - Ice Ball - Icy | |
Orbit | dist: 8.537 AU period: 4,417.64 earth days Ecc: 0.02 Inc: 9° |
Body | rad: 5880 km mass: 0.235 earth grav: 0.277 earth rot: 5.200 hours tilt: 27° |
Temperatures | avg: 259.318°C day: 261.801°C night: 220.420°C |
Water Type: | Ice - 37% |
Atmosphere | type: Thin pres: 0.129 atm comp: Carbon Dioxide 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: 940800 km incline: 5° ecc: 0.04 radius: 2120.5 km mass: 0.014721553647289 earth tilt: 39° |
Moon 1: | core: Icy orbit: 70560 km incline: 1° ecc: 0.04 radius: 2465.5 km mass: 0.0057848732109948 earth tilt: 17° |
Moon 2: | core: Rocky orbit: 235200 km incline: 9° ecc: 0.01 radius: 1212.5 km mass: 0.0082566773173429 earth tilt: 21° |
Moon 3: | core: Icy orbit: 588000 km incline: 2° ecc: 0.03 radius: 500 km mass: 0.000289494346995 earth tilt: 33° |
Moon 4: | core: Rocky orbit: 294000 km incline: 0° ecc: 0.11 radius: 1955.5 km mass: 0.031750090697321 earth tilt: 45° |
Planet 9 - Outer Zone - Ice Ball - Icy | |
Orbit | dist: 29.027 AU period: 4,109.40 earth days Ecc: 0.0 Inc: 0° |
Body | rad: 1648 km mass: 0.005 earth grav: 0.078 earth rot: 7.058 hours tilt: 24° |
Temperatures | avg: 150.935°C day: 153.628°C night: 143.389°C |
Water Type: | Ice - 54% |
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: 29664 km incline: 7° ecc: 0.05 radius: 500 km mass: 0.000289494346995 earth tilt: 43° |
Moon 1: | core: Icy orbit: 13184 km incline: 2° ecc: 0.15 radius: 1193.25 km mass: 0.0026232105158729 earth tilt: 10° |
Moon 2: | core: Icy orbit: 16480 km incline: 4° ecc: 0.04 radius: 1038 km mass: 0.0017267556117196 earth tilt: 38° |
Moon 3: | core: Icy orbit: 16480 km incline: 8° ecc: 0.02 radius: 500 km mass: 0.00019299623133 earth tilt: 36° |