🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.32

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.46 AU - 0.66 AU

Year: 275 Days

Day: 20.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 18.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.57

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.5 AU - 0.82 AU

Year: 352 Days

Day: 46 Hours

Environment

Temp: -130 °C

Axial Tilt: 19.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 479.4

Radius: 8

Gravity: 7.49 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.8 AU - 1.02 AU

Year: 569 Days

Day: 14.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 70,874,404 km

• M1: 99,483 km (0.102 R)
• M2: 575,353 km (0.12 R)
• M3: 996,621 km (0.098 R)
• M4: 1,309,131 km (0.109 R)
• M5: 1,620,295 km (0.072 R)
• M6: 2,100,952 km (0.084 R)
• M7: 2,531,196 km (0.115 R)
• M8: 2,788,953 km (0.104 R)
• M9: 3,721,845 km (0.032 R)
• M10: 3,988,130 km (0.069 R)
• M11: 4,974,428 km (0.112 R)
• M12: 5,248,791 km (0.092 R)
• M13: 6,024,306 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.8

Radius: 12.6

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.89 AU - 1.01 AU

Year: 607 Days

Day: 7.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 70,874,404 km

• M1: 156,779 km (0.094 R)
• M2: 851,810 km (0.102 R)
• M3: 1,328,579 km (0.112 R)
• M4: 1,774,081 km (0.08 R)
• M5: 2,565,454 km (0.106 R)
• M6: 3,234,456 km (0.119 R)
• M7: 5,432,198 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 657.5

Radius: 13.3

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 1.51 AU - 1.81 AU

Year: 1403 Days

Day: 8.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 70,874,404 km

• M1: 165,455 km (0.105 R)
• M2: 660,624 km (0.057 R)
• M3: 1,098,946 km (0.098 R)
• M4: 1,731,147 km (0.063 R)
• M5: 2,205,372 km (0.091 R)
• M6: 3,546,816 km (0.05 R)
• M7: 4,023,734 km (0.092 R)
• M8: 4,487,637 km (0.096 R)
• M9: 5,567,135 km (0.051 R)
• M10: 6,099,554 km (0.1 R)
• M11: 6,987,118 km (0.056 R)
• M12: 8,041,634 km (0.113 R)
• M13: 8,636,285 km (0.051 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 239.2

Radius: 3.7

Gravity: 17.47 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 5.04 AU - 7.48 AU

Year: 10275 Days

Day: 22.6 Hours

Environment

Temp: -226 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 70,874,404 km

• M1: 46,375 km (0.101 R)
• M2: 226,790 km (0.05 R)
• M3: 411,544 km (0.105 R)
• M4: 677,529 km (0.068 R)
• M5: 832,213 km (0.069 R)
• M6: 1,088,474 km (0.109 R)
• M7: 2,463,877 km (0.102 R)
• M8: 4,414,184 km (0.089 R)
• M9: 5,301,898 km (0.032 R)
• M10: 8,029,965 km (0.079 R)
• M11: 9,385,322 km (0.107 R)
• M12: 9,515,621 km (0.113 R)
• M13: 9,913,851 km (0.109 R)
• M14: 12,278,844 km (0.068 R)
• M15: 16,649,495 km (0.101 R)
• M16: 17,884,425 km (0.071 R)
• M17: 18,286,844 km (0.091 R)
• M18: 23,516,187 km (0.113 R)
• M19: 27,211,254 km (0.106 R)
• M20: 29,753,670 km (0.098 R)
• M21: 30,035,064 km (0.063 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 444.5

Radius: 8

Gravity: 6.95 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 9.65 AU - 11.35 AU

Year: 22320 Days

Day: 19.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 70,874,404 km

• M1: 99,483 km (0.058 R)
• M2: 832,662 km (0.065 R)
• M3: 1,090,120 km (0.103 R)
• M4: 2,029,594 km (0.12 R)
• M5: 2,418,698 km (0.089 R)
• M6: 3,056,584 km (0.109 R)
• M7: 4,169,891 km (0.076 R)
• M8: 4,428,247 km (0.092 R)
• M9: 5,609,621 km (0.103 R)
• M10: 7,447,580 km (0.085 R)
• M11: 8,788,127 km (0.113 R)
• M12: 9,377,842 km (0.111 R)
• M13: 9,879,743 km (0.077 R)
• M14: 10,876,663 km (0.093 R)
• M15: 15,007,808 km (0.096 R)
• M16: 16,006,523 km (0.059 R)
• M17: 17,965,657 km (0.108 R)
• M18: 19,897,115 km (0.053 R)
• M19: 21,385,913 km (0.06 R)
• M20: 25,753,124 km (0.103 R)
• M21: 29,838,342 km (0.069 R)
• M22: 38,695,733 km (0.103 R)
• M23: 40,860,863 km (0.12 R)
• M24: 41,303,374 km (0.076 R)
• M25: 41,898,474 km (0.107 R)
• M26: 47,675,944 km (0.104 R)
• M27: 49,157,412 km (0.037 R)
• M28: 51,866,629 km (0.116 R)
• M29: 55,031,522 km (0.096 R)
• M30: 61,549,800 km (0.085 R)
• M31: 63,108,759 km (0.043 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 219 - 15,679 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit