🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.84

Radius: 1.28

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.57 AU - 0.67 AU

Year: 315 Days

Day: 41.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 24.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 603.2

Radius: 11.4

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.62 AU - 0.74 AU

Year: 362 Days

Day: 6.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,054,437 km

• M1: 141,819 km (0.105 R)
• M2: 514,168 km (0.118 R)
• M3: 906,862 km (0.119 R)
• M4: 1,278,314 km (0.068 R)
• M5: 1,796,371 km (0.113 R)
• M6: 2,219,733 km (0.036 R)
• M7: 2,634,269 km (0.106 R)
• M8: 3,551,753 km (0.037 R)
• M9: 3,971,674 km (0.106 R)
• M10: 4,384,414 km (0.086 R)
• M11: 4,769,031 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.7

Radius: 14.9

Gravity: 3.21 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.71 AU - 2.47 AU

Year: 1951 Days

Day: 11.1 Hours

Environment

Temp: -189 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 37,054,437 km

• M1: 186,549 km (0.063 R)
• M2: 781,798 km (0.096 R)
• M3: 1,416,542 km (0.111 R)
• M4: 2,097,362 km (0.076 R)
• M5: 3,160,853 km (0.071 R)
• M6: 3,726,782 km (0.057 R)
• M7: 4,956,925 km (0.083 R)
• M8: 5,468,550 km (0.086 R)
• M9: 6,520,672 km (0.076 R)
• M10: 7,275,842 km (0.09 R)
• M11: 8,548,770 km (0.059 R)
• M12: 11,006,215 km (0.085 R)
• M13: 11,999,844 km (0.12 R)
• M14: 13,135,890 km (0.106 R)
• M15: 15,156,508 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.8

Radius: 11

Gravity: 8.25 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.16 AU - 3.3 AU

Year: 3748 Days

Day: 10.2 Hours

Environment

Temp: -206 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,054,437 km

• M1: 136,732 km (0.083 R)
• M2: 530,324 km (0.034 R)
• M3: 942,467 km (0.087 R)
• M4: 1,311,674 km (0.041 R)
• M5: 1,754,035 km (0.039 R)
• M6: 3,344,709 km (0.086 R)
• M7: 5,623,234 km (0.056 R)
• M8: 6,119,899 km (0.11 R)
• M9: 6,677,600 km (0.03 R)
• M10: 7,235,002 km (0.027 R)
• M11: 7,787,916 km (0.116 R)
• M12: 9,535,817 km (0.112 R)
• M13: 11,165,686 km (0.092 R)
• M14: 13,024,140 km (0.091 R)
• M15: 14,696,345 km (0.102 R)
• M16: 22,681,730 km (0.112 R)
• M17: 24,397,917 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 838.6

Radius: 10.4

Gravity: 7.75 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 3.06 AU - 4.28 AU

Year: 4540 Days

Day: 5.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 37,054,437 km

• M1: 130,599 km (0.092 R)
• M2: 472,879 km (0.045 R)
• M3: 1,213,089 km (0.049 R)
• M4: 1,758,224 km (0.055 R)
• M5: 2,347,789 km (0.109 R)
• M6: 2,951,416 km (0.11 R)
• M7: 4,224,793 km (0.085 R)
• M8: 4,773,369 km (0.113 R)
• M9: 5,803,051 km (0.106 R)
• M10: 6,386,333 km (0.106 R)
• M11: 7,110,237 km (0.085 R)
• M12: 7,527,615 km (0.045 R)
• M13: 10,787,054 km (0.026 R)
• M14: 13,790,530 km (0.116 R)
• M15: 18,519,768 km (0.118 R)
• M16: 21,389,952 km (0.088 R)
• M17: 24,701,750 km (0.096 R)
• M18: 27,399,299 km (0.066 R)
• M19: 27,824,606 km (0.119 R)
• M20: 28,950,778 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 633.6

Radius: 10.3

Gravity: 5.97 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 4.83 AU - 5.87 AU

Year: 7990 Days

Day: 12.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 37,054,437 km

• M1: 128,804 km (0.081 R)
• M2: 463,454 km (0.083 R)
• M3: 908,358 km (0.116 R)
• M4: 1,441,675 km (0.065 R)
• M5: 3,315,238 km (0.032 R)
• M6: 3,805,321 km (0.101 R)
• M7: 4,644,864 km (0.101 R)
• M8: 5,199,124 km (0.095 R)
• M9: 5,764,455 km (0.083 R)
• M10: 6,475,194 km (0.086 R)
• M11: 10,489,204 km (0.076 R)
• M12: 12,401,514 km (0.096 R)
• M13: 17,517,013 km (0.08 R)
• M14: 18,787,249 km (0.084 R)
• M15: 20,117,772 km (0.117 R)
• M16: 21,195,326 km (0.094 R)
• M17: 23,549,098 km (0.105 R)
• M18: 26,071,917 km (0.062 R)
• M19: 34,822,944 km (0.08 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.1

Radius: 9.9

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 5.18 AU - 6.1 AU

Year: 8648 Days

Day: 9.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 37,054,437 km

• M1: 155,731 km (0.113 R)
• M2: 470,037 km (0.061 R)
• M3: 834,008 km (0.073 R)
• M4: 1,933,852 km (0.084 R)
• M5: 2,330,735 km (0.072 R)
• M6: 6,134,410 km (0.116 R)
• M7: 7,180,847 km (0.1 R)
• M8: 9,226,449 km (0.037 R)
• M9: 9,941,227 km (0.113 R)
• M10: 11,380,508 km (0.074 R)
• M11: 14,727,462 km (0.049 R)
• M12: 15,149,328 km (0.05 R)
• M13: 16,983,547 km (0.107 R)
• M14: 18,961,081 km (0.094 R)
• M15: 21,623,923 km (0.061 R)
• M16: 24,358,722 km (0.11 R)
• M17: 25,290,717 km (0.051 R)
• M18: 26,777,720 km (0.091 R)
• M19: 27,588,091 km (0.107 R)
• M20: 35,309,885 km (0.109 R)
• M21: 36,284,365 km (0.113 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 220 - 11,953 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit