🌌 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: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.05

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.62 AU - 0.76 AU

Year: 204 Days

Day: 29.8 Hours

Environment

Temp: 158 °C

Axial Tilt: 10.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 75,777,924 km

• M1: 282,890 km (0.09 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.48

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.56 AU - 0.92 AU

Year: 227 Days

Day: 46.7 Hours

Environment

Temp: 181 °C

Axial Tilt: 43 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.75 AU - 1.05 AU

Year: 304 Days

Day: 44.3 Hours

Environment

Temp: 122 °C

Axial Tilt: 48 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.01

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.4 AU - 1.94 AU

Year: 769 Days

Day: 18.8 Hours

Environment

Temp: -30 °C

Axial Tilt: 3.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.94 AU - 2 AU

Year: 986 Days

Day: 20.3 Hours

Environment

Temp: -57 °C

Axial Tilt: 10.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.05 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 6.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.9

Radius: 11.5

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 6.07 AU - 6.19 AU

Year: 5410 Days

Day: 7.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 75,777,924 km

• M1: 143,016 km (0.11 R)
• M2: 659,427 km (0.039 R)
• M3: 1,353,562 km (0.087 R)
• M4: 1,950,008 km (0.102 R)
• M5: 2,953,810 km (0.086 R)
• M6: 5,015,269 km (0.03 R)
• M7: 5,403,774 km (0.095 R)
• M8: 8,035,650 km (0.098 R)
• M9: 8,605,917 km (0.088 R)
• M10: 10,355,913 km (0.059 R)
• M11: 11,075,030 km (0.097 R)
• M12: 13,091,459 km (0.119 R)
• M13: 13,831,670 km (0.078 R)
• M14: 14,288,990 km (0.085 R)
• M15: 18,018,016 km (0.09 R)
• M16: 18,380,791 km (0.101 R)
• M17: 19,498,437 km (0.087 R)
• M18: 21,393,393 km (0.076 R)
• M19: 23,479,835 km (0.106 R)
• M20: 24,720,749 km (0.045 R)
• M21: 25,244,192 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 559.1

Radius: 5.1

Gravity: 21.5 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 11.78 AU - 18.34 AU

Year: 20832 Days

Day: 16.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 75,777,924 km

• M1: 64,626 km (0.102 R)
• M2: 692,339 km (0.051 R)
• M3: 963,261 km (0.084 R)
• M4: 1,468,602 km (0.096 R)
• M5: 2,034,531 km (0.084 R)
• M6: 2,783,568 km (0.112 R)
• M7: 2,958,148 km (0.112 R)
• M8: 3,220,393 km (0.104 R)
• M9: 4,877,190 km (0.062 R)
• M10: 5,990,048 km (0.115 R)
• M11: 6,760,328 km (0.056 R)
• M12: 8,652,292 km (0.059 R)
• M13: 8,971,684 km (0.099 R)
• M14: 11,622,857 km (0.073 R)
• M15: 12,815,451 km (0.12 R)
• M16: 13,021,896 km (0.087 R)
• M17: 14,678,842 km (0.099 R)
• M18: 14,904,885 km (0.06 R)
• M19: 18,404,876 km (0.089 R)
• M20: 18,667,720 km (0.094 R)
• M21: 21,629,309 km (0.108 R)
• M22: 23,221,180 km (0.086 R)
• M23: 23,425,531 km (0.103 R)
• M24: 28,346,553 km (0.083 R)
• M25: 29,287,972 km (0.103 R)
• M26: 29,646,259 km (0.099 R)
• M27: 31,606,889 km (0.111 R)
• M28: 36,606,599 km (0.12 R)
• M29: 38,860,590 km (0.06 R)
• M30: 45,214,012 km (0.035 R)
• M31: 52,576,620 km (0.099 R)
• M32: 61,671,872 km (0.073 R)
• M33: 63,051,015 km (0.078 R)
• M34: 71,544,733 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 499.2

Radius: 3.3

Gravity: 45.84 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 15.04 AU - 17.4 AU

Year: 23285 Days

Day: 22.5 Hours

Environment

Temp: -198 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 75,777,924 km

• M1: 42,635 km (0.104 R)
• M2: 276,756 km (0.082 R)
• M3: 490,083 km (0.11 R)
• M4: 1,168,509 km (0.079 R)
• M5: 2,341,207 km (0.086 R)
• M6: 3,633,882 km (0.07 R)
• M7: 7,175,163 km (0.092 R)
• M8: 7,904,303 km (0.029 R)
• M9: 9,911,308 km (0.06 R)
• M10: 10,690,264 km (0.043 R)
• M11: 11,252,752 km (0.05 R)
• M12: 12,779,697 km (0.107 R)
• M13: 14,215,089 km (0.069 R)
• M14: 17,231,880 km (0.032 R)
• M15: 21,421,667 km (0.087 R)
• M16: 30,483,259 km (0.079 R)
• M17: 33,550,913 km (0.101 R)
• M18: 68,100,691 km (0.107 R)
• M19: 69,378,107 km (0.106 R)

Kuiper Belt

Range: 30.8 - 52.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 203 - 15,400 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit