🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.97

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.5 AU - 0.58 AU

Year: 150 Days

Day: 17.9 Hours

Environment

Temp: 185 °C

Axial Tilt: 47.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.01

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.55 AU - 0.77 AU

Year: 203 Days

Day: 38.3 Hours

Environment

Temp: 135 °C

Axial Tilt: 16.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.23 AU - 1.29 AU

Year: 536 Days

Day: 30.3 Hours

Environment

Temp: -34 °C

Axial Tilt: 0.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,520,394 km

• M1: 38,895 km (0.103 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 1.38 AU - 1.74 AU

Year: 738 Days

Day: 34.2 Hours

Environment

Temp: -44 °C

Axial Tilt: 20.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.66

Radius: 0.85

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 2.49 AU - 3.25 AU

Year: 1841 Days

Day: 41.9 Hours

Environment

Temp: -115 °C

Axial Tilt: 34.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,520,394 km

• M1: 40,242 km (0.109 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.48

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 3.65 AU - 3.91 AU

Year: 2783 Days

Day: 43.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 49.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,520,394 km

• M1: 58,343 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.9

Radius: 9.8

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 6.86 AU - 7.18 AU

Year: 7045 Days

Day: 11.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 54,520,394 km

• M1: 122,371 km (0.115 R)
• M2: 453,282 km (0.096 R)
• M3: 839,244 km (0.078 R)
• M4: 1,160,281 km (0.1 R)
• M5: 1,768,546 km (0.089 R)
• M6: 2,215,395 km (0.113 R)
• M7: 2,736,743 km (0.107 R)
• M8: 3,549,957 km (0.105 R)
• M9: 3,908,095 km (0.112 R)
• M10: 4,290,467 km (0.115 R)
• M11: 4,830,216 km (0.083 R)
• M12: 5,739,173 km (0.096 R)
• M13: 6,893,769 km (0.046 R)
• M14: 7,856,431 km (0.073 R)
• M15: 8,273,361 km (0.109 R)
• M16: 9,193,088 km (0.077 R)
• M17: 9,570,973 km (0.109 R)
• M18: 10,767,456 km (0.044 R)
• M19: 13,616,249 km (0.107 R)
• M20: 14,668,071 km (0.109 R)
• M21: 20,968,086 km (0.115 R)
• M22: 21,550,471 km (0.095 R)
• M23: 25,850,512 km (0.087 R)
• M24: 26,859,400 km (0.041 R)
• M25: 29,769,079 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 543.1

Radius: 8.4

Gravity: 7.7 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 6.33 AU - 9.33 AU

Year: 8298 Days

Day: 10.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 54,520,394 km

• M1: 104,419 km (0.053 R)
• M2: 461,210 km (0.12 R)
• M3: 917,035 km (0.036 R)
• M4: 1,560,306 km (0.081 R)
• M5: 2,422,139 km (0.08 R)
• M6: 3,432,822 km (0.112 R)
• M7: 4,872,103 km (0.111 R)
• M8: 6,087,586 km (0.069 R)
• M9: 6,820,167 km (0.101 R)
• M10: 9,281,800 km (0.113 R)
• M11: 10,785,109 km (0.106 R)
• M12: 12,067,611 km (0.034 R)
• M13: 12,718,063 km (0.088 R)
• M14: 14,326,390 km (0.114 R)
• M15: 20,034,296 km (0.06 R)
• M16: 22,688,462 km (0.069 R)
• M17: 29,161,412 km (0.053 R)
• M18: 31,735,393 km (0.109 R)
• M19: 35,434,500 km (0.076 R)
• M20: 36,207,322 km (0.093 R)
• M21: 36,766,220 km (0.031 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590

Radius: 13.9

Gravity: 3.05 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 8.13 AU - 13.07 AU

Year: 13071 Days

Day: 9.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 44.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 54,520,394 km

• M1: 173,085 km (0.056 R)
• M2: 735,872 km (0.046 R)
• M3: 1,184,217 km (0.068 R)
• M4: 1,920,537 km (0.07 R)
• M5: 2,729,712 km (0.112 R)
• M6: 3,421,602 km (0.069 R)
• M7: 4,834,106 km (0.039 R)
• M8: 5,325,983 km (0.089 R)
• M9: 7,770,562 km (0.106 R)
• M10: 8,355,939 km (0.094 R)
• M11: 11,109,287 km (0.114 R)
• M12: 17,111,154 km (0.11 R)
• M13: 17,717,773 km (0.084 R)
• M14: 20,797,994 km (0.081 R)
• M15: 21,664,464 km (0.058 R)
• M16: 24,984,340 km (0.07 R)
• M17: 25,667,105 km (0.028 R)
• M18: 27,894,617 km (0.119 R)
• M19: 31,926,878 km (0.079 R)
• M20: 33,667,001 km (0.099 R)
• M21: 38,357,193 km (0.06 R)
• M22: 50,700,514 km (0.114 R)
• M23: 53,066,105 km (0.072 R)
• M24: 54,032,806 km (0.056 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 462 - 10,745 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit