🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.17

Radius: 0.49

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.63 AU - 0.99 AU

Year: 318 Days

Day: 18 Hours

Environment

Temp: -32 °C

Axial Tilt: 13.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,950,999 km

• M1: 76,594 km (0.043 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.64

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.75 AU - 1.05 AU

Year: 373 Days

Day: 23.9 Hours

Environment

Temp: -51 °C

Axial Tilt: 50 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,950,999 km

• M1: 225,594 km (0.115 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.31

Radius: 1.79

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.89 AU - 1.09 AU

Year: 430 Days

Day: 23.4 Hours

Environment

Temp: -60 °C

Axial Tilt: 12.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.85 AU - 1.31 AU

Year: 490 Days

Day: 32.8 Hours

Environment

Temp: -69 °C

Axial Tilt: 22.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.39

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 2 AU - 2.44 AU

Year: 1444 Days

Day: 27.6 Hours

Environment

Temp: -134 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.55 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 6.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 565

Radius: 10.8

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 6.55 AU - 7.19 AU

Year: 7861 Days

Day: 9.8 Hours

Environment

Temp: -183 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 72,950,999 km

• M1: 134,339 km (0.102 R)
• M2: 610,808 km (0.087 R)
• M3: 999,015 km (0.1 R)
• M4: 1,989,652 km (0.072 R)
• M5: 2,521,622 km (0.111 R)
• M6: 5,468,251 km (0.095 R)
• M7: 9,996,279 km (0.059 R)
• M8: 14,674,055 km (0.087 R)
• M9: 18,450,205 km (0.069 R)
• M10: 19,017,480 km (0.064 R)
• M11: 19,963,836 km (0.071 R)
• M12: 23,898,260 km (0.071 R)
• M13: 25,782,445 km (0.062 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 560.4

Radius: 12.4

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 6.46 AU - 7.54 AU

Year: 8085 Days

Day: 6.9 Hours

Environment

Temp: -178 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 72,950,999 km

• M1: 154,235 km (0.093 R)
• M2: 619,634 km (0.112 R)
• M3: 1,472,342 km (0.06 R)
• M4: 2,101,252 km (0.054 R)
• M5: 3,410,532 km (0.065 R)
• M6: 4,000,546 km (0.092 R)
• M7: 4,413,287 km (0.047 R)
• M8: 4,998,364 km (0.107 R)
• M9: 7,106,647 km (0.09 R)
• M10: 10,265,555 km (0.089 R)
• M11: 11,757,495 km (0.069 R)
• M12: 13,965,709 km (0.03 R)
• M13: 15,044,609 km (0.069 R)
• M14: 16,898,575 km (0.052 R)
• M15: 17,915,243 km (0.104 R)
• M16: 21,678,078 km (0.026 R)
• M17: 23,370,179 km (0.051 R)
• M18: 28,405,045 km (0.119 R)
• M19: 29,453,577 km (0.071 R)
• M20: 34,654,945 km (0.104 R)
• M21: 36,739,891 km (0.119 R)
• M22: 38,098,838 km (0.06 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 289.9

Radius: 5.6

Gravity: 9.24 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 14.86 AU - 17.84 AU

Year: 28861 Days

Day: 22.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 72,950,999 km

• M1: 69,713 km (0.117 R)
• M2: 453,581 km (0.079 R)
• M3: 1,365,380 km (0.064 R)
• M4: 1,601,894 km (0.102 R)
• M5: 2,017,776 km (0.115 R)
• M6: 2,502,922 km (0.073 R)
• M7: 2,785,213 km (0.105 R)
• M8: 3,036,538 km (0.099 R)
• M9: 5,092,760 km (0.067 R)
• M10: 5,625,030 km (0.066 R)
• M11: 6,622,847 km (0.027 R)
• M12: 10,555,626 km (0.066 R)
• M13: 10,920,046 km (0.105 R)
• M14: 15,114,172 km (0.089 R)
• M15: 15,655,118 km (0.104 R)
• M16: 18,120,341 km (0.104 R)
• M17: 19,535,537 km (0.09 R)
• M18: 19,717,448 km (0.1 R)
• M19: 24,961,003 km (0.09 R)
• M20: 27,958,196 km (0.102 R)
• M21: 29,364,117 km (0.084 R)
• M22: 30,939,682 km (0.114 R)
• M23: 31,435,449 km (0.05 R)
• M24: 32,189,273 km (0.116 R)
• M25: 32,698,355 km (0.087 R)
• M26: 57,192,463 km (0.108 R)
• M27: 62,162,403 km (0.112 R)
• M28: 66,380,914 km (0.077 R)
• M29: 71,215,767 km (0.088 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 367 - 18,714 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit