🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.6

Radius: 1.47

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.7 AU - 0.88 AU

Year: 247 Days

Day: 17 Hours

Environment

Temp: 161 °C

Axial Tilt: 37.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.38

Radius: 1.41

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.75 AU - 0.97 AU

Year: 280 Days

Day: 21.8 Hours

Environment

Temp: 130 °C

Axial Tilt: 26.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.44

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.9 AU - 1.14 AU

Year: 362 Days

Day: 14.3 Hours

Environment

Temp: 142 °C

Axial Tilt: 80.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.05 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.78

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.88 AU - 1.22 AU

Year: 378 Days

Day: 41 Hours

Environment

Temp: 78 °C

Axial Tilt: 7.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 41,795,026 km

• M1: 46,076 km (0.105 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.83

Radius: 1.52

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.07 AU - 1.13 AU

Year: 405 Days

Day: 16.6 Hours

Environment

Temp: 45 °C

Axial Tilt: 1.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 41,795,026 km

• M1: 61,186 km (0.102 R)
• M2: 301,290 km (0.094 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.77 AU - 2.47 AU

Year: 1085 Days

Day: 37.6 Hours

Environment

Temp: -60 °C

Axial Tilt: 26.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.73

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 3.4 AU - 4.64 AU

Year: 2833 Days

Day: 12.2 Hours

Environment

Temp: -116 °C

Axial Tilt: 27.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 11.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 413.8

Radius: 8.7

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 10.94 AU - 12.06 AU

Year: 13706 Days

Day: 7.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 41,795,026 km

• M1: 108,458 km (0.066 R)
• M2: 495,468 km (0.075 R)
• M3: 832,961 km (0.049 R)
• M4: 1,337,555 km (0.118 R)
• M5: 1,697,487 km (0.07 R)
• M6: 2,228,859 km (0.088 R)
• M7: 2,824,109 km (0.107 R)
• M8: 3,397,816 km (0.1 R)
• M9: 4,102,572 km (0.09 R)
• M10: 5,421,277 km (0.061 R)
• M11: 6,122,592 km (0.101 R)
• M12: 6,882,998 km (0.076 R)
• M13: 8,139,919 km (0.093 R)
• M14: 8,963,755 km (0.055 R)
• M15: 9,592,664 km (0.109 R)
• M16: 12,523,586 km (0.118 R)
• M17: 15,113,125 km (0.067 R)
• M18: 18,039,708 km (0.073 R)
• M19: 19,356,917 km (0.048 R)
• M20: 20,242,836 km (0.066 R)
• M21: 24,149,435 km (0.047 R)
• M22: 31,181,133 km (0.063 R)
• M23: 32,062,564 km (0.112 R)
• M24: 34,572,218 km (0.075 R)
• M25: 43,288,687 km (0.03 R)
• M26: 46,348,711 km (0.099 R)
• M27: 46,920,175 km (0.105 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 92.5

Radius: 3

Gravity: 10.28 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 14.81 AU - 16.87 AU

Year: 22157 Days

Day: 19.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 41,795,026 km

• M1: 57,146 km (0.114 R)
• M2: 175,478 km (0.115 R)
• M3: 297,401 km (0.042 R)
• M4: 924,814 km (0.077 R)
• M5: 1,392,906 km (0.075 R)
• M6: 2,274,785 km (0.052 R)
• M7: 2,811,243 km (0.038 R)
• M8: 2,936,457 km (0.085 R)
• M9: 3,131,083 km (0.043 R)
• M10: 3,919,165 km (0.097 R)
• M11: 5,257,019 km (0.116 R)
• M12: 8,017,399 km (0.104 R)
• M13: 8,657,079 km (0.118 R)
• M14: 9,468,947 km (0.076 R)
• M15: 9,845,634 km (0.087 R)
• M16: 11,452,166 km (0.034 R)
• M17: 11,771,707 km (0.098 R)
• M18: 12,097,082 km (0.093 R)
• M19: 13,400,379 km (0.045 R)
• M20: 14,607,185 km (0.052 R)
• M21: 15,046,105 km (0.104 R)
• M22: 16,685,548 km (0.032 R)
• M23: 20,625,507 km (0.115 R)
• M24: 22,476,631 km (0.119 R)
• M25: 29,475,268 km (0.047 R)
• M26: 40,677,755 km (0.071 R)
• M27: 41,171,728 km (0.1 R)
• M28: 41,544,974 km (0.103 R)

Kuiper Belt

Range: 31.2 - 60.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 539 - 13,673 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit