🌌 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: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.44 AU - 0.68 AU

Year: 266 Days

Day: 23 Hours

Environment

Temp: -121 °C

Axial Tilt: 7.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 33,273,188 km

• M1: 161,416 km (0.118 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.39

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.57 AU - 0.59 AU

Year: 281 Days

Day: 25 Hours

Environment

Temp: -124 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 33,273,188 km

• M1: 42,187 km (0.115 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.58 AU - 0.7 AU

Year: 326 Days

Day: 36.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 44.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 890.1

Radius: 9.7

Gravity: 9.46 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.75 AU - 0.77 AU

Year: 421 Days

Day: 9.6 Hours

Environment

Temp: -150 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,273,188 km

• M1: 120,725 km (0.116 R)
• M2: 660,624 km (0.094 R)
• M3: 1,009,337 km (0.066 R)
• M4: 1,593,965 km (0.117 R)
• M5: 1,988,904 km (0.073 R)
• M6: 2,730,909 km (0.084 R)
• M7: 3,646,897 km (0.102 R)
• M8: 4,544,335 km (0.096 R)
• M9: 5,005,395 km (0.109 R)
• M10: 5,582,394 km (0.067 R)
• M11: 6,239,877 km (0.062 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 404.9

Radius: 12.9

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.86 AU - 0.98 AU

Year: 561 Days

Day: 14.1 Hours

Environment

Temp: -163 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 33,273,188 km

• M1: 160,519 km (0.119 R)
• M2: 570,267 km (0.113 R)
• M3: 1,083,687 km (0.109 R)
• M4: 1,621,940 km (0.101 R)
• M5: 2,570,241 km (0.109 R)
• M6: 4,068,763 km (0.118 R)
• M7: 4,582,781 km (0.107 R)
• M8: 5,046,684 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 145.9

Radius: 12.3

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1.1 AU - 1.2 AU

Year: 784 Days

Day: 12.4 Hours

Environment

Temp: -163 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 33,273,188 km

• M1: 153,039 km (0.079 R)
• M2: 928,255 km (0.078 R)
• M3: 1,596,808 km (0.057 R)
• M4: 2,379,055 km (0.069 R)
• M5: 3,646,149 km (0.114 R)
• M6: 4,182,457 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.2

Radius: 8.1

Gravity: 13.86 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 3.01 AU - 3.97 AU

Year: 4145 Days

Day: 14.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,273,188 km

• M1: 100,829 km (0.117 R)
• M2: 776,413 km (0.095 R)
• M3: 1,309,729 km (0.1 R)
• M4: 1,603,240 km (0.06 R)
• M5: 1,899,444 km (0.095 R)
• M6: 2,795,984 km (0.109 R)
• M7: 3,328,403 km (0.096 R)
• M8: 3,683,698 km (0.1 R)
• M9: 4,323,977 km (0.114 R)
• M10: 4,930,147 km (0.037 R)
• M11: 6,186,770 km (0.091 R)
• M12: 7,859,723 km (0.048 R)
• M13: 10,458,686 km (0.039 R)
• M14: 13,218,468 km (0.101 R)
• M15: 15,100,110 km (0.112 R)
• M16: 15,611,435 km (0.045 R)
• M17: 16,608,655 km (0.097 R)
• M18: 20,606,658 km (0.066 R)
• M19: 21,024,634 km (0.116 R)
• M20: 23,275,035 km (0.12 R)
• M21: 24,652,981 km (0.087 R)
• M22: 27,486,365 km (0.079 R)
• M23: 27,738,886 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 563.7

Radius: 13.4

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 3.54 AU - 5.76 AU

Year: 6375 Days

Day: 9.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 33,273,188 km

• M1: 166,802 km (0.114 R)
• M2: 630,106 km (0.088 R)
• M3: 1,143,377 km (0.093 R)
• M4: 1,586,037 km (0.096 R)
• M5: 3,670,085 km (0.11 R)
• M6: 4,506,785 km (0.101 R)
• M7: 5,704,915 km (0.111 R)
• M8: 6,897,060 km (0.113 R)
• M9: 8,523,937 km (0.073 R)
• M10: 10,622,346 km (0.037 R)
• M11: 13,151,747 km (0.097 R)
• M12: 13,691,347 km (0.102 R)
• M13: 14,699,636 km (0.054 R)
• M14: 16,120,367 km (0.103 R)
• M15: 16,551,508 km (0.107 R)
• M16: 17,630,857 km (0.099 R)
• M17: 18,287,293 km (0.081 R)
• M18: 20,426,542 km (0.049 R)
• M19: 21,077,742 km (0.105 R)
• M20: 21,593,705 km (0.069 R)
• M21: 22,042,648 km (0.117 R)
• M22: 23,114,517 km (0.069 R)
• M23: 25,694,930 km (0.058 R)
• M24: 26,453,990 km (0.067 R)
• M25: 28,821,077 km (0.107 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: 368 - 11,222 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit