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

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
primaryG6V : Yellow Dwarf (M-S)0.9176 sol1.880 sol
0.174 auHot House3.05985 earth11,661 km0.0 1
0.592 auHot House0.89363 earth6,615 km0.11 3
1.244 auIce Ball0.04460 earth3,377 km0.02 38° 2
1.244 auDesert0.81723 earth7,067 km0.01 10° 0
1.617 auIce Ball0.04988 earth3,185 km0.0 3
1.779 auIce Ball0.02156 earth3,034 km0.04 13° 4
5.336 auIce Ball0.05985 earth2,957 km0.04 1
8.537 auIce Ball0.23541 earth5,880 km0.02 5
29.027 auIce Ball0.00518 earth1,648 km0.0 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:
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°