🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.54 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.07 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.41

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.94 AU - 1.2 AU

Year: 410 Days

Day: 15.8 Hours

Environment

Temp: 14 °C

Axial Tilt: 103.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.93

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.94 AU - 1.26 AU

Year: 428 Days

Day: 30.9 Hours

Environment

Temp: 4 °C

Axial Tilt: 35.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.17 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.2

Radius: 1.08

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.16 AU - 1.18 AU

Year: 469 Days

Day: 24.8 Hours

Environment

Temp: 1 °C

Axial Tilt: 31.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.72

Radius: 1.24

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.18 AU - 1.24 AU

Year: 494 Days

Day: 36.5 Hours

Environment

Temp: -10 °C

Axial Tilt: 15.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 65,037,107 km

• M1: 411,394 km (0.085 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.67 AU - 1.73 AU

Year: 822 Days

Day: 18.5 Hours

Environment

Temp: -48 °C

Axial Tilt: 33.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 2.02 AU - 2.18 AU

Year: 1129 Days

Day: 28.5 Hours

Environment

Temp: -69 °C

Axial Tilt: 3.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 8.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 820.2

Radius: 12.6

Gravity: 5.17 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 7.51 AU - 10.25 AU

Year: 9813 Days

Day: 5.8 Hours

Environment

Temp: -168 °C

Axial Tilt: 158.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 65,037,107 km

• M1: 157,227 km (0.038 R)
• M2: 840,740 km (0.054 R)
• M3: 1,417,141 km (0.057 R)
• M4: 2,379,504 km (0.063 R)
• M5: 2,993,902 km (0.109 R)
• M6: 3,436,263 km (0.114 R)
• M7: 4,542,539 km (0.088 R)
• M8: 6,420,142 km (0.093 R)
• M9: 6,921,445 km (0.102 R)
• M10: 8,769,128 km (0.109 R)
• M11: 10,085,739 km (0.11 R)
• M12: 11,252,752 km (0.079 R)
• M13: 12,926,154 km (0.082 R)
• M14: 14,108,874 km (0.111 R)
• M15: 23,121,697 km (0.059 R)
• M16: 24,210,770 km (0.082 R)
• M17: 24,768,022 km (0.09 R)
• M18: 26,785,948 km (0.082 R)
• M19: 28,292,847 km (0.082 R)
• M20: 29,538,548 km (0.101 R)
• M21: 35,959,439 km (0.07 R)
• M22: 37,916,328 km (0.106 R)
• M23: 40,331,137 km (0.11 R)
• M24: 44,488,612 km (0.105 R)
• M25: 47,606,830 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 57.9

Radius: 14.1

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 7.82 AU - 10.46 AU

Year: 10248 Days

Day: 6.9 Hours

Environment

Temp: -166 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,037,107 km

• M1: 175,927 km (0.118 R)
• M2: 923,617 km (0.112 R)
• M3: 2,056,672 km (0.113 R)
• M4: 2,670,322 km (0.071 R)
• M5: 3,209,024 km (0.086 R)
• M6: 3,761,638 km (0.117 R)
• M7: 4,442,758 km (0.073 R)
• M8: 5,278,561 km (0.11 R)
• M9: 6,080,256 km (0.07 R)
• M10: 6,843,355 km (0.094 R)
• M11: 8,527,228 km (0.071 R)
• M12: 10,631,023 km (0.115 R)
• M13: 11,279,231 km (0.078 R)
• M14: 12,344,816 km (0.076 R)
• M15: 13,061,390 km (0.113 R)
• M16: 13,948,206 km (0.026 R)
• M17: 14,874,666 km (0.094 R)
• M18: 16,581,129 km (0.115 R)
• M19: 19,710,118 km (0.069 R)
• M20: 21,254,865 km (0.088 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 192.1

Radius: 4.7

Gravity: 8.7 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 17.3 AU - 19.98 AU

Year: 29845 Days

Day: 18.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 65,037,107 km

• M1: 61,485 km (0.106 R)
• M2: 207,941 km (0.048 R)
• M3: 456,722 km (0.104 R)
• M4: 1,200,523 km (0.096 R)
• M5: 1,994,289 km (0.095 R)
• M6: 2,187,719 km (0.108 R)
• M7: 3,403,501 km (0.115 R)
• M8: 4,343,125 km (0.081 R)
• M9: 4,504,093 km (0.108 R)
• M10: 5,555,915 km (0.106 R)
• M11: 6,633,918 km (0.116 R)
• M12: 8,377,331 km (0.094 R)
• M13: 8,526,779 km (0.106 R)
• M14: 10,233,542 km (0.061 R)
• M15: 13,134,095 km (0.104 R)
• M16: 14,234,686 km (0.118 R)
• M17: 15,246,865 km (0.1 R)
• M18: 16,306,168 km (0.101 R)
• M19: 16,461,450 km (0.08 R)
• M20: 17,252,374 km (0.118 R)
• M21: 19,081,208 km (0.113 R)
• M22: 19,601,659 km (0.088 R)
• M23: 25,336,195 km (0.098 R)
• M24: 33,829,015 km (0.115 R)
• M25: 35,885,537 km (0.087 R)
• M26: 37,212,470 km (0.068 R)
• M27: 40,529,504 km (0.106 R)
• M28: 42,994,877 km (0.12 R)
• M29: 49,186,134 km (0.113 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 550 - 20,325 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit