🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.71 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.12 AU - 1.72 AU

Year: 592 Days

Day: 42.3 Hours

Environment

Temp: -4 °C

Axial Tilt: 23.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.24

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.47 AU - 1.85 AU

Year: 748 Days

Day: 23.2 Hours

Environment

Temp: -40 °C

Axial Tilt: 38.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,638,029 km

• M1: 1,061,247 km (0.108 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.55

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 1.59 AU - 2.07 AU

Year: 866 Days

Day: 44.8 Hours

Environment

Temp: -48 °C

Axial Tilt: 27.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.13

Radius: 1.05

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.88 AU - 2.86 AU

Year: 1276 Days

Day: 17.7 Hours

Environment

Temp: -66 °C

Axial Tilt: 10.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 51,638,029 km

• M1: 68,217 km (0.052 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.6 AU - 3.6 AU

Year: 1909 Days

Day: 19.5 Hours

Environment

Temp: -103 °C

Axial Tilt: 12 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 3.96 AU - 5.18 AU

Year: 3418 Days

Day: 33.1 Hours

Environment

Temp: -116 °C

Axial Tilt: 62.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.44

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 4.14 AU - 5.18 AU

Year: 3519 Days

Day: 25.4 Hours

Environment

Temp: -119 °C

Axial Tilt: 18.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.47 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 6.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 286.1

Radius: 8.8

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 5.19 AU - 7.37 AU

Year: 5506 Days

Day: 13.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 51,638,029 km

• M1: 109,506 km (0.103 R)
• M2: 408,552 km (0.057 R)
• M3: 687,701 km (0.051 R)
• M4: 1,026,391 km (0.101 R)
• M5: 1,552,676 km (0.085 R)
• M6: 1,884,484 km (0.099 R)
• M7: 2,502,922 km (0.031 R)
• M8: 2,859,713 km (0.051 R)
• M9: 9,089,567 km (0.083 R)
• M10: 9,430,051 km (0.064 R)
• M11: 15,190,018 km (0.066 R)
• M12: 22,248,046 km (0.107 R)
• M13: 22,659,739 km (0.038 R)

Planet 9 - Gas Giant

Semi-Major Axis: 11.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 989.2

Radius: 10.4

Gravity: 9.15 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 9.02 AU - 14.32 AU

Year: 13947 Days

Day: 6.7 Hours

Environment

Temp: -181 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 51,638,029 km

• M1: 131,347 km (0.086 R)
• M2: 1,502,711 km (0.11 R)
• M3: 2,082,552 km (0.079 R)
• M4: 2,667,180 km (0.107 R)
• M5: 3,981,547 km (0.116 R)
• M6: 4,514,714 km (0.092 R)
• M7: 5,840,450 km (0.083 R)
• M8: 8,516,607 km (0.035 R)
• M9: 9,841,446 km (0.027 R)
• M10: 13,852,464 km (0.069 R)
• M11: 15,375,968 km (0.068 R)
• M12: 16,217,157 km (0.078 R)
• M13: 19,713,110 km (0.085 R)
• M14: 20,797,545 km (0.113 R)
• M15: 32,162,944 km (0.05 R)
• M16: 33,537,449 km (0.114 R)
• M17: 36,269,555 km (0.059 R)
• M18: 38,171,243 km (0.083 R)
• M19: 47,396,645 km (0.106 R)
• M20: 48,523,266 km (0.107 R)
• M21: 65,627,239 km (0.089 R)

Planet 10 - Ice Giant

Semi-Major Axis: 14.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 237.3

Radius: 7.2

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 12.88 AU - 15.8 AU

Year: 18998 Days

Day: 15.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 51,638,029 km

• M1: 92,003 km (0.11 R)
• M2: 385,215 km (0.071 R)
• M3: 1,126,921 km (0.115 R)
• M4: 1,467,406 km (0.058 R)
• M5: 2,169,768 km (0.089 R)
• M6: 2,743,176 km (0.042 R)
• M7: 3,314,939 km (0.061 R)
• M8: 7,463,887 km (0.117 R)
• M9: 9,838,304 km (0.062 R)
• M10: 10,569,239 km (0.055 R)
• M11: 12,256,554 km (0.11 R)
• M12: 17,245,493 km (0.097 R)
• M13: 18,383,783 km (0.094 R)
• M14: 21,836,502 km (0.108 R)
• M15: 24,364,257 km (0.114 R)
• M16: 38,045,431 km (0.115 R)
• M17: 40,887,791 km (0.097 R)
• M18: 42,360,582 km (0.055 R)
• M19: 44,705,977 km (0.06 R)
• M20: 49,053,441 km (0.059 R)
• M21: 51,021,850 km (0.078 R)

Kuiper Belt

Range: 31.4 - 56.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 434 - 16,385 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit