🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.88

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.68 AU - 0.9 AU

Year: 247 Days

Day: 38.9 Hours

Environment

Temp: 188 °C

Axial Tilt: 34 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.54

Radius: 1.66

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.67 AU - 0.93 AU

Year: 251 Days

Day: 24.6 Hours

Environment

Temp: 153 °C

Axial Tilt: 18.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.64

Radius: 1.47

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.2 AU - 1.22 AU

Year: 468 Days

Day: 17.4 Hours

Environment

Temp: 19 °C

Axial Tilt: 35.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.46 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.96

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.3 AU - 1.62 AU

Year: 620 Days

Day: 27.5 Hours

Environment

Temp: -4 °C

Axial Tilt: 0.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 93,069,161 km

• M1: 395,986 km (0.051 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.74 AU - 2.56 AU

Year: 1108 Days

Day: 43.1 Hours

Environment

Temp: -55 °C

Axial Tilt: 31.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 7.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 548.2

Radius: 9.3

Gravity: 6.34 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 6.66 AU - 8.82 AU

Year: 7568 Days

Day: 9.4 Hours

Environment

Temp: -157 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 93,069,161 km

• M1: 115,789 km (0.113 R)
• M2: 684,410 km (0.066 R)
• M3: 1,023,549 km (0.088 R)
• M4: 1,357,152 km (0.09 R)
• M5: 2,654,913 km (0.048 R)
• M6: 3,701,799 km (0.093 R)
• M7: 5,266,144 km (0.117 R)
• M8: 7,156,313 km (0.086 R)
• M9: 8,938,772 km (0.061 R)
• M10: 9,728,499 km (0.058 R)
• M11: 10,280,216 km (0.068 R)
• M12: 11,295,986 km (0.085 R)
• M13: 15,349,789 km (0.066 R)
• M14: 18,979,033 km (0.108 R)
• M15: 19,406,584 km (0.104 R)
• M16: 23,224,022 km (0.084 R)
• M17: 24,209,573 km (0.091 R)
• M18: 24,628,297 km (0.116 R)
• M19: 28,062,466 km (0.105 R)
• M20: 32,104,152 km (0.11 R)
• M21: 32,711,519 km (0.088 R)
• M22: 33,636,932 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 12.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 848.8

Radius: 12.5

Gravity: 5.43 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 10.43 AU - 14.43 AU

Year: 15402 Days

Day: 13.8 Hours

Environment

Temp: -181 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 93,069,161 km

• M1: 165,156 km (0.11 R)
• M2: 711,787 km (0.046 R)
• M3: 1,278,164 km (0.114 R)
• M4: 1,950,307 km (0.075 R)
• M5: 5,194,936 km (0.116 R)
• M6: 6,398,301 km (0.09 R)
• M7: 7,313,690 km (0.065 R)
• M8: 7,923,002 km (0.093 R)
• M9: 9,296,760 km (0.076 R)
• M10: 11,306,607 km (0.117 R)
• M11: 13,111,655 km (0.075 R)
• M12: 13,800,703 km (0.052 R)
• M13: 14,586,391 km (0.069 R)
• M14: 15,629,238 km (0.098 R)
• M15: 19,143,740 km (0.075 R)
• M16: 22,466,010 km (0.119 R)
• M17: 30,826,436 km (0.088 R)
• M18: 33,295,549 km (0.089 R)
• M19: 34,189,995 km (0.078 R)
• M20: 34,708,202 km (0.119 R)
• M21: 35,495,536 km (0.088 R)
• M22: 38,344,926 km (0.103 R)
• M23: 39,045,194 km (0.11 R)
• M24: 39,611,571 km (0.084 R)
• M25: 44,341,557 km (0.093 R)
• M26: 45,268,465 km (0.092 R)
• M27: 47,803,551 km (0.1 R)
• M28: 59,264,692 km (0.075 R)
• M29: 66,227,127 km (0.069 R)
• M30: 67,235,267 km (0.08 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 697.2

Radius: 5.4

Gravity: 23.91 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 14.82 AU - 21.16 AU

Year: 26818 Days

Day: 19.6 Hours

Environment

Temp: -184 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 93,069,161 km

• M1: 68,815 km (0.09 R)
• M2: 244,443 km (0.113 R)
• M3: 484,996 km (0.104 R)
• M4: 1,701,825 km (0.098 R)
• M5: 2,406,431 km (0.117 R)
• M6: 2,705,926 km (0.107 R)
• M7: 3,658,416 km (0.118 R)
• M8: 6,618,659 km (0.045 R)
• M9: 12,476,612 km (0.111 R)
• M10: 14,630,373 km (0.117 R)
• M11: 15,372,228 km (0.067 R)
• M12: 15,966,282 km (0.089 R)
• M13: 18,590,976 km (0.089 R)
• M14: 32,103,703 km (0.054 R)
• M15: 34,635,497 km (0.098 R)
• M16: 37,753,865 km (0.077 R)
• M17: 40,092,379 km (0.094 R)
• M18: 45,400,411 km (0.104 R)
• M19: 45,920,712 km (0.109 R)
• M20: 57,788,909 km (0.061 R)
• M21: 61,098,314 km (0.059 R)
• M22: 62,585,017 km (0.079 R)
• M23: 64,313,621 km (0.071 R)
• M24: 68,545,894 km (0.086 R)
• M25: 81,325,142 km (0.115 R)
• M26: 86,002,021 km (0.11 R)
• M27: 90,854,976 km (0.117 R)

Kuiper Belt

Range: 31.2 - 50.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 308 - 14,041 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit