🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.93

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.55 AU - 0.61 AU

Year: 159 Days

Day: 38.5 Hours

Environment

Temp: 245 °C

Axial Tilt: 41.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.88 AU - 1.04 AU

Year: 339 Days

Day: 38.4 Hours

Environment

Temp: 141 °C

Axial Tilt: 32.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.6

Radius: 0.82

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 1.29 AU - 1.49 AU

Year: 590 Days

Day: 40.6 Hours

Environment

Temp: -9 °C

Axial Tilt: 4.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 68,682,395 km

• M1: 547,079 km (0.087 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.57

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.73 AU - 2.67 AU

Year: 1174 Days

Day: 13 Hours

Environment

Temp: -61 °C

Axial Tilt: 29.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.6

Radius: 1.47

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 3.75 AU - 4.95 AU

Year: 3265 Days

Day: 35.9 Hours

Environment

Temp: -119 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380.8

Radius: 12.6

Gravity: 2.4 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 7.45 AU - 8.63 AU

Year: 8205 Days

Day: 10.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 68,682,395 km

• M1: 188,045 km (0.074 R)
• M2: 796,609 km (0.119 R)
• M3: 1,643,632 km (0.04 R)
• M4: 2,180,688 km (0.118 R)
• M5: 2,796,283 km (0.11 R)
• M6: 3,227,724 km (0.102 R)
• M7: 3,935,621 km (0.061 R)
• M8: 4,403,413 km (0.086 R)
• M9: 5,275,719 km (0.104 R)
• M10: 5,692,199 km (0.079 R)
• M11: 6,325,447 km (0.052 R)
• M12: 6,970,214 km (0.111 R)
• M13: 8,311,957 km (0.056 R)
• M14: 9,297,807 km (0.09 R)
• M15: 10,968,366 km (0.071 R)
• M16: 11,950,626 km (0.068 R)
• M17: 12,620,076 km (0.099 R)
• M18: 13,977,527 km (0.11 R)
• M19: 15,977,053 km (0.066 R)
• M20: 16,599,829 km (0.113 R)
• M21: 26,844,440 km (0.052 R)
• M22: 27,370,576 km (0.077 R)
• M23: 28,990,422 km (0.043 R)
• M24: 30,959,878 km (0.107 R)
• M25: 32,519,286 km (0.059 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 602.6

Radius: 5

Gravity: 24.1 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 10.7 AU - 15.52 AU

Year: 17083 Days

Day: 19 Hours

Environment

Temp: -182 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 68,682,395 km

• M1: 62,382 km (0.071 R)
• M2: 253,868 km (0.098 R)
• M3: 563,535 km (0.085 R)
• M4: 1,099,096 km (0.105 R)
• M5: 1,501,663 km (0.096 R)
• M6: 2,594,177 km (0.09 R)
• M7: 3,437,759 km (0.087 R)
• M8: 3,688,784 km (0.066 R)
• M9: 3,922,007 km (0.088 R)
• M10: 4,227,337 km (0.109 R)
• M11: 4,515,612 km (0.05 R)
• M12: 5,025,142 km (0.107 R)
• M13: 5,312,071 km (0.108 R)
• M14: 6,444,676 km (0.103 R)
• M15: 7,919,262 km (0.066 R)
• M16: 9,176,184 km (0.084 R)
• M17: 9,496,473 km (0.114 R)
• M18: 13,189,745 km (0.117 R)
• M19: 15,765,521 km (0.113 R)
• M20: 15,994,256 km (0.118 R)
• M21: 16,614,938 km (0.09 R)
• M22: 17,575,805 km (0.108 R)
• M23: 20,862,620 km (0.109 R)
• M24: 24,536,744 km (0.025 R)
• M25: 26,098,545 km (0.095 R)
• M26: 26,849,527 km (0.034 R)
• M27: 36,084,353 km (0.055 R)
• M28: 37,015,899 km (0.073 R)
• M29: 39,765,807 km (0.085 R)
• M30: 40,047,948 km (0.063 R)
• M31: 41,769,670 km (0.067 R)
• M32: 58,439,361 km (0.09 R)
• M33: 61,400,950 km (0.085 R)
• M34: 63,686,656 km (0.029 R)
• M35: 64,460,974 km (0.102 R)
• M36: 64,850,527 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 85

Radius: 6.2

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 11.14 AU - 15.48 AU

Year: 17476 Days

Day: 22.9 Hours

Environment

Temp: -180 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 68,682,395 km

• M1: 81,381 km (0.105 R)
• M2: 2,867,492 km (0.114 R)
• M3: 5,803,949 km (0.094 R)
• M4: 9,192,490 km (0.053 R)
• M5: 9,625,875 km (0.058 R)
• M6: 22,090,968 km (0.103 R)
• M7: 26,764,705 km (0.103 R)
• M8: 27,916,010 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 227.2

Radius: 8

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 17.36 AU - 20.62 AU

Year: 29782 Days

Day: 17.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 68,682,395 km

• M1: 185,950 km (0.029 R)
• M2: 1,236,726 km (0.076 R)
• M3: 1,573,022 km (0.104 R)
• M4: 2,083,898 km (0.106 R)
• M5: 2,654,913 km (0.071 R)
• M6: 3,774,354 km (0.114 R)
• M7: 6,474,895 km (0.114 R)
• M8: 27,778,380 km (0.091 R)
• M9: 34,042,043 km (0.078 R)
• M10: 43,722,072 km (0.073 R)
• M11: 51,952,199 km (0.074 R)
• M12: 52,294,479 km (0.097 R)
• M13: 62,693,326 km (0.087 R)

Kuiper Belt

Range: 30.5 - 45.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 218 - 19,964 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit