🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.18

Radius: 1.37

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.43 AU - 0.65 AU

Year: 256 Days

Day: 25.8 Hours

Environment

Temp: -111 °C

Axial Tilt: 36.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 36,606,512 km

• M1: 48,619 km (0.032 R)
• M2: 410,497 km (0.064 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.49 AU - 0.67 AU

Year: 285 Days

Day: 42.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 387.8

Radius: 13.8

Gravity: 2.04 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.72 AU - 1.12 AU

Year: 570 Days

Day: 11.1 Hours

Environment

Temp: -164 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,606,512 km

• M1: 171,738 km (0.03 R)
• M2: 667,207 km (0.11 R)
• M3: 1,114,803 km (0.114 R)
• M4: 1,686,866 km (0.099 R)
• M5: 2,151,816 km (0.077 R)
• M6: 3,024,719 km (0.05 R)
• M7: 3,478,001 km (0.055 R)
• M8: 4,122,469 km (0.098 R)
• M9: 4,875,544 km (0.111 R)
• M10: 5,569,080 km (0.066 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 618.3

Radius: 14.4

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.92 AU - 1.02 AU

Year: 617 Days

Day: 10.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,606,512 km

• M1: 179,966 km (0.116 R)
• M2: 675,883 km (0.091 R)
• M3: 1,193,791 km (0.068 R)
• M4: 1,843,794 km (0.108 R)
• M5: 2,328,940 km (0.079 R)
• M6: 3,002,429 km (0.09 R)
• M7: 3,538,887 km (0.103 R)
• M8: 4,182,756 km (0.052 R)
• M9: 4,712,183 km (0.062 R)
• M10: 6,878,211 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 527.8

Radius: 13.9

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.53 AU - 1.87 AU

Year: 1431 Days

Day: 14.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,606,512 km

• M1: 189,092 km (0.052 R)
• M2: 646,861 km (0.069 R)
• M3: 1,499,868 km (0.09 R)
• M4: 2,681,691 km (0.102 R)
• M5: 3,352,787 km (0.093 R)
• M6: 3,898,969 km (0.059 R)
• M7: 4,688,696 km (0.111 R)
• M8: 5,395,397 km (0.115 R)
• M9: 5,993,339 km (0.06 R)
• M10: 7,949,481 km (0.102 R)
• M11: 8,555,203 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.6

Radius: 8.4

Gravity: 8.4 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.87 AU - 2.15 AU

Year: 1840 Days

Day: 14.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 36,606,512 km

• M1: 104,419 km (0.071 R)
• M2: 368,310 km (0.085 R)
• M3: 641,326 km (0.069 R)
• M4: 909,405 km (0.118 R)
• M5: 1,246,599 km (0.081 R)
• M6: 1,737,130 km (0.109 R)
• M7: 2,143,588 km (0.108 R)
• M8: 2,680,794 km (0.093 R)
• M9: 2,952,164 km (0.12 R)
• M10: 3,226,078 km (0.098 R)
• M11: 3,669,037 km (0.12 R)
• M12: 4,556,452 km (0.085 R)
• M13: 6,121,994 km (0.108 R)
• M14: 6,418,197 km (0.067 R)
• M15: 6,802,066 km (0.077 R)
• M16: 7,757,547 km (0.06 R)
• M17: 9,177,829 km (0.117 R)
• M18: 10,204,669 km (0.088 R)
• M19: 10,551,736 km (0.064 R)
• M20: 11,087,147 km (0.08 R)
• M21: 11,453,961 km (0.103 R)
• M22: 12,722,401 km (0.119 R)
• M23: 14,775,034 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957.6

Radius: 13.2

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.93 AU - 2.35 AU

Year: 2021 Days

Day: 11 Hours

Environment

Temp: -192 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 36,606,512 km

• M1: 164,408 km (0.111 R)
• M2: 596,596 km (0.088 R)
• M3: 1,425,069 km (0.099 R)
• M4: 2,464,775 km (0.119 R)
• M5: 2,997,343 km (0.074 R)
• M6: 3,429,082 km (0.109 R)
• M7: 4,524,438 km (0.114 R)
• M8: 5,305,339 km (0.066 R)
• M9: 6,226,712 km (0.11 R)
• M10: 9,014,319 km (0.097 R)
• M11: 9,672,699 km (0.091 R)
• M12: 10,625,189 km (0.06 R)
• M13: 13,590,667 km (0.083 R)
• M14: 15,899,860 km (0.1 R)
• M15: 16,401,462 km (0.082 R)
• M16: 17,916,140 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 401.5

Radius: 14.1

Gravity: 2.02 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 4.26 AU - 7.08 AU

Year: 8717 Days

Day: 11.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,606,512 km

• M1: 180,714 km (0.118 R)
• M2: 758,312 km (0.099 R)
• M3: 1,391,709 km (0.117 R)
• M4: 2,472,105 km (0.084 R)
• M5: 2,952,314 km (0.109 R)
• M6: 3,933,676 km (0.108 R)
• M7: 4,435,278 km (0.11 R)
• M8: 5,880,094 km (0.114 R)
• M9: 6,573,181 km (0.05 R)
• M10: 7,065,208 km (0.041 R)
• M11: 7,849,400 km (0.111 R)
• M12: 10,088,132 km (0.074 R)
• M13: 10,554,279 km (0.101 R)
• M14: 11,529,657 km (0.106 R)
• M15: 12,940,964 km (0.108 R)
• M16: 15,667,983 km (0.045 R)
• M17: 17,199,267 km (0.075 R)
• M18: 29,102,471 km (0.112 R)
• M19: 36,279,578 km (0.119 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 164 - 17,512 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit