🌌 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: 1.35

Radius: 1.13

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.58 AU - 0.8 AU

Year: 217 Days

Day: 33.1 Hours

Environment

Temp: 146 °C

Axial Tilt: 32.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.57

Radius: 0.8

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.68 AU - 0.74 AU

Year: 227 Days

Day: 33 Hours

Environment

Temp: 123 °C

Axial Tilt: 19.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.83 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.71

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.66 AU - 1 AU

Year: 286 Days

Day: 47.1 Hours

Environment

Temp: 136 °C

Axial Tilt: 25.7 °

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: 4.62

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.38 AU - 1.96 AU

Year: 817 Days

Day: 32.8 Hours

Environment

Temp: -51 °C

Axial Tilt: 0.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.94

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.59 AU - 2.25 AU

Year: 1008 Days

Day: 17.4 Hours

Environment

Temp: -71 °C

Axial Tilt: 12.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.95

Radius: 0.98

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 2.11 AU - 2.37 AU

Year: 1270 Days

Day: 12.8 Hours

Environment

Temp: -79 °C

Axial Tilt: 8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.08

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.8 AU - 2.88 AU

Year: 1356 Days

Day: 41.1 Hours

Environment

Temp: -101 °C

Axial Tilt: 26.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.25

Radius: 1.38

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 2.49 AU - 4.09 AU

Year: 2260 Days

Day: 18 Hours

Environment

Temp: -128 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 10.62 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 17.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 871.3

Radius: 7.7

Gravity: 14.7 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 13.94 AU - 21.94 AU

Year: 28779 Days

Day: 19.9 Hours

Environment

Temp: -206 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 111,631,749 km

• M1: 98,585 km (0.108 R)
• M2: 422,464 km (0.08 R)
• M3: 1,054,216 km (0.098 R)
• M4: 1,475,633 km (0.059 R)
• M5: 1,983,817 km (0.103 R)
• M6: 2,790,898 km (0.118 R)
• M7: 3,834,343 km (0.109 R)
• M8: 4,113,792 km (0.099 R)
• M9: 4,912,644 km (0.104 R)
• M10: 5,500,115 km (0.094 R)
• M11: 6,664,585 km (0.12 R)
• M12: 7,331,343 km (0.075 R)
• M13: 7,985,385 km (0.102 R)
• M14: 14,857,163 km (0.116 R)
• M15: 15,549,053 km (0.111 R)
• M16: 16,626,756 km (0.119 R)
• M17: 16,903,811 km (0.1 R)
• M18: 17,946,209 km (0.067 R)
• M19: 18,930,264 km (0.108 R)
• M20: 19,950,073 km (0.117 R)
• M21: 22,098,597 km (0.05 R)
• M22: 23,113,918 km (0.085 R)
• M23: 24,278,238 km (0.111 R)
• M24: 25,481,005 km (0.064 R)
• M25: 26,346,429 km (0.066 R)
• M26: 29,059,985 km (0.107 R)
• M27: 30,553,121 km (0.051 R)
• M28: 32,382,853 km (0.119 R)
• M29: 36,104,848 km (0.093 R)
• M30: 49,724,238 km (0.103 R)
• M31: 54,048,813 km (0.032 R)
• M32: 55,887,969 km (0.083 R)
• M33: 62,988,483 km (0.11 R)
• M34: 65,943,340 km (0.106 R)
• M35: 77,139,544 km (0.118 R)
• M36: 82,646,989 km (0.028 R)
• M37: 93,559,556 km (0.03 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 989.1

Radius: 5.1

Gravity: 38.03 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 18.03 AU - 18.51 AU

Year: 29577 Days

Day: 16 Hours

Environment

Temp: -201 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 111,631,749 km

• M1: 175,030 km (0.106 R)
• M2: 470,934 km (0.104 R)
• M3: 671,694 km (0.069 R)
• M4: 2,565,454 km (0.073 R)
• M5: 2,956,802 km (0.096 R)
• M6: 4,684,807 km (0.113 R)
• M7: 5,669,011 km (0.117 R)
• M8: 8,688,644 km (0.095 R)
• M9: 12,479,305 km (0.057 R)
• M10: 16,957,068 km (0.087 R)
• M11: 17,243,847 km (0.075 R)
• M12: 19,136,410 km (0.077 R)
• M13: 22,745,010 km (0.117 R)
• M14: 38,991,189 km (0.098 R)
• M15: 41,187,735 km (0.058 R)
• M16: 52,805,056 km (0.053 R)
• M17: 56,972,404 km (0.071 R)
• M18: 60,016,721 km (0.096 R)
• M19: 60,905,931 km (0.106 R)
• M20: 75,835,200 km (0.111 R)
• M21: 76,094,154 km (0.117 R)
• M22: 80,048,624 km (0.067 R)
• M23: 90,967,174 km (0.069 R)
• M24: 109,635,492 km (0.032 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 277 - 16,191 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit