🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.45 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.68

Radius: 1.85

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 0.87 AU - 0.91 AU

Year: 310 Days

Day: 46.3 Hours

Environment

Temp: 121 °C

Axial Tilt: 1.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.07 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.79

Radius: 1.26

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.87 AU - 1.27 AU

Year: 408 Days

Day: 43.5 Hours

Environment

Temp: 3 °C

Axial Tilt: 29.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 44,461,882 km

• M1: 124,166 km (0.032 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.07 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.89 AU - 1.25 AU

Year: 408 Days

Day: 12.5 Hours

Environment

Temp: 31 °C

Axial Tilt: 12.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.19 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.85

Radius: 1.71

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.1 AU - 1.28 AU

Year: 479 Days

Day: 44.6 Hours

Environment

Temp: 15 °C

Axial Tilt: 38.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 1.88 AU - 2.92 AU

Year: 1372 Days

Day: 39.8 Hours

Environment

Temp: -82 °C

Axial Tilt: 2.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.95

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 2.05 AU - 3.11 AU

Year: 1529 Days

Day: 36.3 Hours

Environment

Temp: -85 °C

Axial Tilt: 29.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 4.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.1

Radius: 10.6

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 4.15 AU - 5.71 AU

Year: 4039 Days

Day: 7.2 Hours

Environment

Temp: -137 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,461,882 km

• M1: 131,945 km (0.05 R)
• M2: 618,438 km (0.103 R)
• M3: 1,061,397 km (0.071 R)
• M4: 1,451,847 km (0.059 R)
• M5: 2,234,543 km (0.041 R)
• M6: 3,720,649 km (0.061 R)
• M7: 4,662,218 km (0.047 R)
• M8: 6,060,359 km (0.092 R)
• M9: 7,389,836 km (0.116 R)
• M10: 8,938,174 km (0.071 R)
• M11: 11,115,720 km (0.076 R)
• M12: 11,670,728 km (0.068 R)
• M13: 14,493,341 km (0.063 R)
• M14: 15,641,804 km (0.117 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 988.1

Radius: 10.6

Gravity: 8.79 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 8.63 AU - 10.63 AU

Year: 11026 Days

Day: 6.5 Hours

Environment

Temp: -167 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 44,461,882 km

• M1: 131,796 km (0.068 R)
• M2: 566,078 km (0.106 R)
• M3: 919,129 km (0.085 R)
• M4: 2,280,620 km (0.039 R)
• M5: 3,632,386 km (0.099 R)
• M6: 4,135,783 km (0.085 R)
• M7: 4,813,760 km (0.059 R)
• M8: 5,930,359 km (0.06 R)
• M9: 6,711,110 km (0.04 R)
• M10: 7,384,001 km (0.04 R)
• M11: 8,717,666 km (0.117 R)
• M12: 9,622,584 km (0.086 R)
• M13: 10,533,485 km (0.105 R)
• M14: 10,981,531 km (0.068 R)
• M15: 17,091,706 km (0.08 R)
• M16: 17,789,580 km (0.109 R)
• M17: 20,860,226 km (0.058 R)
• M18: 22,108,920 km (0.063 R)
• M19: 33,226,585 km (0.116 R)
• M20: 35,674,155 km (0.032 R)
• M21: 38,766,792 km (0.045 R)
• M22: 39,165,620 km (0.05 R)
• M23: 51,474,832 km (0.104 R)
• M24: 51,956,687 km (0.09 R)
• M25: 52,603,847 km (0.118 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 411.4

Radius: 8.3

Gravity: 5.97 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 9.49 AU - 10.35 AU

Year: 11528 Days

Day: 7 Hours

Environment

Temp: -168 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 44,461,882 km

• M1: 103,223 km (0.119 R)
• M2: 582,085 km (0.113 R)
• M3: 1,140,983 km (0.068 R)
• M4: 1,570,478 km (0.069 R)
• M5: 1,988,904 km (0.05 R)
• M6: 4,738,064 km (0.077 R)
• M7: 5,132,553 km (0.095 R)
• M8: 5,714,788 km (0.049 R)
• M9: 6,268,749 km (0.102 R)
• M10: 6,707,221 km (0.072 R)
• M11: 8,231,922 km (0.081 R)
• M12: 8,758,058 km (0.09 R)
• M13: 9,121,281 km (0.108 R)
• M14: 10,573,129 km (0.103 R)
• M15: 12,511,468 km (0.057 R)
• M16: 13,989,495 km (0.114 R)
• M17: 15,123,447 km (0.109 R)
• M18: 18,297,914 km (0.106 R)
• M19: 18,967,215 km (0.107 R)
• M20: 20,118,670 km (0.111 R)
• M21: 21,397,582 km (0.094 R)
• M22: 24,116,523 km (0.064 R)
• M23: 30,435,537 km (0.062 R)
• M24: 31,059,510 km (0.066 R)
• M25: 33,201,153 km (0.105 R)
• M26: 38,015,213 km (0.1 R)
• M27: 39,965,370 km (0.092 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 319 - 15,748 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit