🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.59 AU - 0.81 AU

Year: 212 Days

Day: 42.9 Hours

Environment

Temp: 136 °C

Axial Tilt: 37.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.9

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.04 AU - 1.36 AU

Year: 475 Days

Day: 30.2 Hours

Environment

Temp: -0 °C

Axial Tilt: 72.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 64,791,589 km

• M1: 71,059 km (0.1 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.61 AU - 1.75 AU

Year: 788 Days

Day: 26.4 Hours

Environment

Temp: -52 °C

Axial Tilt: 21.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.12

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 1.97 AU - 2.13 AU

Year: 1062 Days

Day: 44.3 Hours

Environment

Temp: -62 °C

Axial Tilt: 16 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.48

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 3.81 AU - 4.87 AU

Year: 3270 Days

Day: 29.7 Hours

Environment

Temp: -121 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.38 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 6.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 415.2

Radius: 12.8

Gravity: 2.53 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 4.85 AU - 7.99 AU

Year: 5883 Days

Day: 13.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 64,791,589 km

• M1: 184,305 km (0.105 R)
• M2: 704,307 km (0.099 R)
• M3: 1,559,109 km (0.114 R)
• M4: 3,232,960 km (0.077 R)
• M5: 5,543,349 km (0.059 R)
• M6: 6,124,986 km (0.101 R)
• M7: 8,375,686 km (0.038 R)
• M8: 11,542,972 km (0.086 R)
• M9: 12,107,255 km (0.037 R)
• M10: 13,964,363 km (0.109 R)
• M11: 24,059,975 km (0.088 R)
• M12: 25,373,145 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.5

Radius: 8.4

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 5.88 AU - 7 AU

Year: 5910 Days

Day: 6.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 64,791,589 km

• M1: 105,915 km (0.036 R)
• M2: 433,086 km (0.09 R)
• M3: 1,422,526 km (0.114 R)
• M4: 1,996,384 km (0.118 R)
• M5: 2,926,134 km (0.069 R)
• M6: 4,141,767 km (0.112 R)
• M7: 4,712,183 km (0.089 R)
• M8: 5,360,840 km (0.063 R)
• M9: 5,979,726 km (0.118 R)
• M10: 7,192,815 km (0.085 R)
• M11: 8,488,333 km (0.1 R)
• M12: 9,447,405 km (0.113 R)
• M13: 10,307,443 km (0.08 R)
• M14: 11,218,644 km (0.111 R)
• M15: 14,698,440 km (0.058 R)
• M16: 15,130,927 km (0.119 R)
• M17: 20,263,480 km (0.107 R)
• M18: 20,597,233 km (0.091 R)
• M19: 25,353,698 km (0.114 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 120.3

Radius: 9.4

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 6.85 AU - 10.27 AU

Year: 9057 Days

Day: 9.4 Hours

Environment

Temp: -171 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,791,589 km

• M1: 116,986 km (0.107 R)
• M2: 433,235 km (0.101 R)
• M3: 1,152,951 km (0.118 R)
• M4: 2,970,266 km (0.103 R)
• M5: 3,434,618 km (0.07 R)
• M6: 4,011,617 km (0.092 R)
• M7: 6,400,694 km (0.109 R)
• M8: 6,704,229 km (0.104 R)
• M9: 11,535,342 km (0.095 R)
• M10: 17,987,798 km (0.095 R)
• M11: 24,606,456 km (0.081 R)

Planet 9 - Gas Giant

Semi-Major Axis: 12.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 671.9

Radius: 13.7

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 11.88 AU - 13 AU

Year: 15868 Days

Day: 7.8 Hours

Environment

Temp: -180 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 64,791,589 km

• M1: 173,384 km (0.106 R)
• M2: 606,619 km (0.114 R)
• M3: 1,109,119 km (0.092 R)
• M4: 1,573,770 km (0.074 R)
• M5: 2,450,712 km (0.096 R)
• M6: 3,110,589 km (0.059 R)
• M7: 4,003,688 km (0.102 R)
• M8: 4,689,594 km (0.084 R)
• M9: 5,131,057 km (0.107 R)
• M10: 6,297,622 km (0.108 R)
• M11: 7,272,401 km (0.108 R)
• M12: 8,542,338 km (0.109 R)
• M13: 10,010,491 km (0.067 R)
• M14: 11,397,712 km (0.108 R)
• M15: 18,246,602 km (0.079 R)
• M16: 26,039,305 km (0.06 R)
• M17: 27,106,685 km (0.116 R)
• M18: 32,640,011 km (0.107 R)
• M19: 43,313,221 km (0.048 R)
• M20: 54,878,034 km (0.078 R)
• M21: 60,619,750 km (0.12 R)

Kuiper Belt

Range: 30.3 - 48.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 525 - 10,996 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit