🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.62 AU - 0.62 AU

Year: 179 Days

Day: 24.7 Hours

Environment

Temp: 140 °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: 3.41

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.64 AU - 0.78 AU

Year: 220 Days

Day: 24.6 Hours

Environment

Temp: 168 °C

Axial Tilt: 15.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 17,134,980 km

• M1: 222,003 km (0.117 R)
• M2: 295,755 km (0.114 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.06

Radius: 1.56

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.85 AU - 1.11 AU

Year: 356 Days

Day: 16.7 Hours

Environment

Temp: 29 °C

Axial Tilt: 3.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.75

Radius: 0.89

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.9 AU - 1.36 AU

Year: 441 Days

Day: 37.1 Hours

Environment

Temp: 19 °C

Axial Tilt: 35.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.12 AU - 1.6 AU

Year: 582 Days

Day: 25.7 Hours

Environment

Temp: -25 °C

Axial Tilt: 37.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.82 AU - 2.36 AU

Year: 1109 Days

Day: 16.7 Hours

Environment

Temp: -69 °C

Axial Tilt: 25.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 17,134,980 km

• M1: 35,455 km (0.093 R)

Planet 7 - Terrestrial

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 3.26 AU - 5.4 AU

Year: 3308 Days

Day: 20.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 35.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 17,134,980 km

• M1: 1,670,559 km (0.12 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 667.1

Radius: 12.2

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 3.94 AU - 5.6 AU

Year: 3824 Days

Day: 11.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 17,134,980 km

• M1: 153,039 km (0.097 R)
• M2: 564,283 km (0.098 R)
• M3: 959,371 km (0.04 R)
• M4: 1,816,866 km (0.11 R)
• M5: 2,213,899 km (0.103 R)
• M6: 2,868,988 km (0.086 R)
• M7: 3,510,763 km (0.094 R)
• M8: 4,135,184 km (0.111 R)
• M9: 5,006,143 km (0.078 R)
• M10: 9,208,048 km (0.092 R)
• M11: 9,791,031 km (0.045 R)
• M12: 10,439,687 km (0.114 R)
• M13: 13,571,070 km (0.105 R)
• M14: 15,539,628 km (0.094 R)
• M15: 17,107,115 km (0.105 R)
• M16: 18,593,669 km (0.101 R)
• M17: 22,649,566 km (0.092 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 641.1

Radius: 8.4

Gravity: 9.09 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 5.17 AU - 5.43 AU

Year: 4479 Days

Day: 9.2 Hours

Environment

Temp: -142 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 17,134,980 km

• M1: 104,419 km (0.105 R)
• M2: 428,598 km (0.086 R)
• M3: 744,100 km (0.059 R)
• M4: 1,169,706 km (0.11 R)
• M5: 1,444,966 km (0.102 R)
• M6: 2,188,617 km (0.12 R)
• M7: 3,034,892 km (0.111 R)
• M8: 3,400,808 km (0.087 R)
• M9: 3,926,944 km (0.078 R)
• M10: 4,221,502 km (0.116 R)
• M11: 4,628,857 km (0.07 R)
• M12: 5,981,072 km (0.067 R)
• M13: 6,558,221 km (0.101 R)
• M14: 7,648,191 km (0.081 R)
• M15: 8,439,265 km (0.109 R)
• M16: 8,854,548 km (0.1 R)
• M17: 11,965,885 km (0.082 R)
• M18: 13,280,850 km (0.074 R)
• M19: 14,368,277 km (0.057 R)
• M20: 14,635,608 km (0.043 R)
• M21: 15,125,392 km (0.104 R)
• M22: 17,986,002 km (0.064 R)
• M23: 20,237,600 km (0.074 R)
• M24: 20,709,432 km (0.112 R)
• M25: 21,396,086 km (0.098 R)
• M26: 21,745,247 km (0.105 R)
• M27: 25,682,214 km (0.087 R)
• M28: 26,474,934 km (0.067 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 150.8

Radius: 13.7

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 4.59 AU - 6.13 AU

Year: 4555 Days

Day: 6.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 17,134,980 km

• M1: 173,234 km (0.104 R)
• M2: 885,320 km (0.076 R)
• M3: 1,314,068 km (0.097 R)
• M4: 2,046,499 km (0.113 R)
• M5: 2,841,761 km (0.106 R)
• M6: 3,446,286 km (0.088 R)
• M7: 4,514,116 km (0.1 R)
• M8: 5,670,956 km (0.087 R)
• M9: 7,500,388 km (0.081 R)
• M10: 13,081,287 km (0.048 R)
• M11: 13,815,962 km (0.111 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 291 - 17,070 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit