🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 0.45 AU - 0.75 AU

Year: 305 Days

Day: 25.2 Hours

Environment

Temp: -124 °C

Axial Tilt: 8.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 157

Radius: 12.1

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.62 AU - 0.89 AU

Year: 426 Days

Day: 5 Hours

Environment

Temp: -144 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 39,541,869 km

• M1: 150,495 km (0.116 R)
• M2: 568,771 km (0.108 R)
• M3: 1,100,592 km (0.066 R)
• M4: 1,746,106 km (0.091 R)
• M5: 2,439,193 km (0.072 R)
• M6: 2,943,637 km (0.071 R)
• M7: 3,456,608 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 427

Radius: 11.7

Gravity: 3.12 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.84 AU - 1.34 AU

Year: 747 Days

Day: 8.8 Hours

Environment

Temp: -164 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 39,541,869 km

• M1: 145,708 km (0.041 R)
• M2: 554,709 km (0.038 R)
• M3: 952,041 km (0.079 R)
• M4: 1,666,819 km (0.119 R)
• M5: 2,163,036 km (0.063 R)
• M6: 2,554,384 km (0.071 R)
• M7: 2,924,339 km (0.103 R)
• M8: 3,317,931 km (0.078 R)
• M9: 3,870,546 km (0.119 R)
• M10: 4,718,018 km (0.118 R)
• M11: 5,211,541 km (0.042 R)
• M12: 5,979,277 km (0.105 R)
• M13: 7,259,536 km (0.029 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.1

Radius: 13.4

Gravity: 1.96 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 1.28 AU - 1.7 AU

Year: 1193 Days

Day: 10.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 39,541,869 km

• M1: 166,652 km (0.089 R)
• M2: 676,033 km (0.098 R)
• M3: 1,177,335 km (0.061 R)
• M4: 1,613,712 km (0.057 R)
• M5: 2,376,512 km (0.041 R)
• M6: 2,940,047 km (0.092 R)
• M7: 4,115,437 km (0.107 R)
• M8: 5,939,185 km (0.115 R)
• M9: 6,873,573 km (0.114 R)
• M10: 7,879,170 km (0.076 R)
• M11: 8,481,900 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 407.2

Radius: 11

Gravity: 3.37 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.46 AU - 2.12 AU

Year: 1571 Days

Day: 12.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 39,541,869 km

• M1: 137,480 km (0.083 R)
• M2: 596,596 km (0.074 R)
• M3: 1,014,573 km (0.092 R)
• M4: 1,720,974 km (0.104 R)
• M5: 2,295,879 km (0.098 R)
• M6: 2,756,341 km (0.082 R)
• M7: 3,120,462 km (0.087 R)
• M8: 4,131,893 km (0.113 R)
• M9: 4,538,201 km (0.104 R)
• M10: 4,971,137 km (0.107 R)
• M11: 5,833,270 km (0.12 R)
• M12: 6,300,314 km (0.104 R)
• M13: 7,159,156 km (0.104 R)
• M14: 8,230,426 km (0.107 R)
• M15: 8,591,555 km (0.034 R)
• M16: 8,963,156 km (0.047 R)
• M17: 10,143,334 km (0.09 R)
• M18: 10,494,141 km (0.05 R)
• M19: 10,853,176 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.1

Radius: 11.4

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.01 AU - 2.59 AU

Year: 2288 Days

Day: 9.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 39,541,869 km

• M1: 141,819 km (0.11 R)
• M2: 556,205 km (0.095 R)
• M3: 1,035,367 km (0.045 R)
• M4: 4,264,886 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 249.1

Radius: 9.5

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 2.7 AU - 3 AU

Year: 3156 Days

Day: 8.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,541,869 km

• M1: 119,379 km (0.104 R)
• M2: 474,973 km (0.089 R)
• M3: 858,692 km (0.028 R)
• M4: 1,195,137 km (0.086 R)
• M5: 1,690,755 km (0.064 R)
• M6: 2,027,500 km (0.102 R)
• M7: 2,435,304 km (0.104 R)
• M8: 2,882,751 km (0.032 R)
• M9: 3,815,793 km (0.046 R)
• M10: 4,283,735 km (0.086 R)
• M11: 5,945,019 km (0.098 R)
• M12: 6,497,185 km (0.088 R)
• M13: 6,812,687 km (0.105 R)
• M14: 8,360,875 km (0.078 R)
• M15: 8,861,579 km (0.099 R)
• M16: 10,809,493 km (0.117 R)
• M17: 14,220,624 km (0.025 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 669.7

Radius: 10.9

Gravity: 5.64 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 5 AU - 5.22 AU

Year: 7578 Days

Day: 8.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 39,541,869 km

• M1: 135,536 km (0.059 R)
• M2: 608,714 km (0.064 R)
• M3: 1,057,358 km (0.108 R)
• M4: 1,590,674 km (0.108 R)
• M5: 2,332,231 km (0.112 R)
• M6: 3,515,251 km (0.109 R)
• M7: 3,872,042 km (0.089 R)
• M8: 4,659,076 km (0.09 R)
• M9: 5,549,483 km (0.076 R)
• M10: 6,237,782 km (0.041 R)
• M11: 6,585,149 km (0.069 R)
• M12: 7,705,487 km (0.119 R)
• M13: 9,301,846 km (0.088 R)
• M14: 9,756,175 km (0.03 R)
• M15: 10,611,575 km (0.1 R)
• M16: 11,310,945 km (0.109 R)
• M17: 12,093,941 km (0.101 R)
• M18: 14,782,663 km (0.054 R)
• M19: 16,960,359 km (0.076 R)
• M20: 21,077,742 km (0.056 R)
• M21: 25,200,210 km (0.062 R)
• M22: 29,344,221 km (0.086 R)
• M23: 30,820,752 km (0.089 R)
• M24: 32,449,723 km (0.071 R)
• M25: 34,242,653 km (0.116 R)
• M26: 36,659,706 km (0.115 R)
• M27: 37,111,043 km (0.06 R)
• M28: 39,423,826 km (0.083 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 218 - 11,408 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit