🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.08

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.46 AU - 0.59 AU

Year: 246 Days

Day: 18.9 Hours

Environment

Temp: -116 °C

Axial Tilt: 27.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.53

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.49 AU - 0.79 AU

Year: 336 Days

Day: 25.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 16.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 78,618,163 km

• M1: 251,624 km (0.117 R)
• M2: 326,572 km (0.08 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 259.5

Radius: 11.6

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.64 AU - 0.74 AU

Year: 376 Days

Day: 7 Hours

Environment

Temp: -145 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 78,618,163 km

• M1: 144,512 km (0.087 R)
• M2: 506,688 km (0.048 R)
• M3: 1,037,611 km (0.044 R)
• M4: 1,446,462 km (0.107 R)
• M5: 1,936,694 km (0.091 R)
• M6: 2,470,609 km (0.03 R)
• M7: 2,840,564 km (0.119 R)
• M8: 3,368,196 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 948.9

Radius: 10.5

Gravity: 8.61 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.73 AU - 0.79 AU

Year: 435 Days

Day: 11.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,618,163 km

• M1: 139,874 km (0.046 R)
• M2: 505,790 km (0.089 R)
• M3: 1,020,108 km (0.088 R)
• M4: 1,400,386 km (0.113 R)
• M5: 1,741,918 km (0.053 R)
• M6: 2,448,020 km (0.082 R)
• M7: 2,829,494 km (0.102 R)
• M8: 3,203,190 km (0.099 R)
• M9: 3,900,016 km (0.101 R)
• M10: 5,139,584 km (0.089 R)
• M11: 5,491,289 km (0.088 R)
• M12: 5,967,160 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.3

Radius: 12.8

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.83 AU - 2.11 AU

Year: 1814 Days

Day: 14.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 78,618,163 km

• M1: 159,172 km (0.082 R)
• M2: 611,706 km (0.086 R)
• M3: 1,153,400 km (0.108 R)
• M4: 1,694,495 km (0.115 R)
• M5: 2,617,514 km (0.075 R)
• M6: 3,894,930 km (0.096 R)
• M7: 4,303,033 km (0.114 R)
• M8: 5,099,791 km (0.108 R)
• M9: 6,518,428 km (0.065 R)
• M10: 7,185,485 km (0.072 R)
• M11: 7,709,377 km (0.112 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 182.4

Radius: 7.7

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 7.06 AU - 9.84 AU

Year: 16114 Days

Day: 18.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,618,163 km

• M1: 100,380 km (0.109 R)
• M2: 409,300 km (0.09 R)
• M3: 839,094 km (0.079 R)
• M4: 1,137,841 km (0.061 R)
• M5: 2,237,835 km (0.076 R)
• M6: 5,071,069 km (0.099 R)
• M7: 8,692,983 km (0.114 R)
• M8: 8,958,818 km (0.098 R)
• M9: 9,980,572 km (0.086 R)
• M10: 11,496,297 km (0.025 R)
• M11: 32,811,301 km (0.113 R)
• M12: 40,141,896 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 932

Radius: 7.9

Gravity: 14.93 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 8.8 AU - 9.4 AU

Year: 18008 Days

Day: 20 Hours

Environment

Temp: -225 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 78,618,163 km

• M1: 98,286 km (0.107 R)
• M2: 587,321 km (0.045 R)
• M3: 835,803 km (0.093 R)
• M4: 1,295,966 km (0.095 R)
• M5: 1,731,147 km (0.044 R)
• M6: 2,304,256 km (0.096 R)
• M7: 3,322,569 km (0.119 R)
• M8: 4,406,854 km (0.054 R)
• M9: 6,384,837 km (0.118 R)
• M10: 7,993,014 km (0.115 R)
• M11: 10,452,852 km (0.068 R)
• M12: 11,525,319 km (0.051 R)
• M13: 14,716,242 km (0.067 R)
• M14: 15,497,741 km (0.116 R)
• M15: 18,362,690 km (0.119 R)
• M16: 20,393,631 km (0.074 R)
• M17: 25,336,045 km (0.069 R)
• M18: 25,780,799 km (0.112 R)
• M19: 26,457,580 km (0.094 R)
• M20: 28,919,961 km (0.11 R)
• M21: 34,976,431 km (0.056 R)
• M22: 36,931,675 km (0.082 R)
• M23: 44,348,887 km (0.106 R)
• M24: 47,810,582 km (0.104 R)
• M25: 56,768,802 km (0.081 R)
• M26: 73,323,900 km (0.106 R)
• M27: 76,748,794 km (0.102 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 284 - 18,608 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit