🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.73

Radius: 0.88

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.55 AU - 0.59 AU

Year: 278 Days

Day: 21.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 6.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 30,055,366 km

• M1: 22,589 km (0.078 R)
• M2: 172,038 km (0.06 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.51 AU - 0.69 AU

Year: 300 Days

Day: 46.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 13.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 301.9

Radius: 10.2

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.75 AU - 0.79 AU

Year: 436 Days

Day: 11.1 Hours

Environment

Temp: -134 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 30,055,366 km

• M1: 127,009 km (0.066 R)
• M2: 603,777 km (0.056 R)
• M3: 997,519 km (0.064 R)
• M4: 1,401,582 km (0.115 R)
• M5: 1,753,137 km (0.114 R)
• M6: 2,585,051 km (0.101 R)
• M7: 3,000,185 km (0.109 R)
• M8: 3,481,741 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 614.9

Radius: 13.4

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.75 AU - 0.91 AU

Year: 488 Days

Day: 5.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 30,055,366 km

• M1: 182,809 km (0.103 R)
• M2: 869,463 km (0.112 R)
• M3: 1,345,334 km (0.102 R)
• M4: 2,123,841 km (0.093 R)
• M5: 2,611,979 km (0.04 R)
• M6: 3,301,924 km (0.112 R)
• M7: 4,475,370 km (0.073 R)
• M8: 5,287,088 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.4

Radius: 9.6

Gravity: 9.24 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.74 AU - 1 AU

Year: 524 Days

Day: 12.4 Hours

Environment

Temp: -157 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 30,055,366 km

• M1: 119,529 km (0.06 R)
• M2: 447,746 km (0.082 R)
• M3: 796,758 km (0.087 R)
• M4: 1,319,603 km (0.109 R)
• M5: 1,683,126 km (0.063 R)
• M6: 2,225,268 km (0.08 R)
• M7: 2,937,354 km (0.107 R)
• M8: 3,309,105 km (0.091 R)
• M9: 4,340,732 km (0.066 R)
• M10: 4,712,632 km (0.069 R)
• M11: 5,772,683 km (0.095 R)
• M12: 7,089,293 km (0.073 R)

Asteroid Belt

Center: 1.54 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 171.8

Radius: 10.5

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 1.89 AU - 2.53 AU

Year: 2121 Days

Day: 11.5 Hours

Environment

Temp: -190 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 30,055,366 km

• M1: 130,749 km (0.106 R)
• M2: 622,028 km (0.101 R)
• M3: 1,184,815 km (0.113 R)
• M4: 1,803,103 km (0.048 R)
• M5: 2,345,395 km (0.115 R)
• M6: 4,161,364 km (0.095 R)
• M7: 5,691,900 km (0.105 R)
• M8: 6,203,674 km (0.084 R)
• M9: 6,815,829 km (0.06 R)
• M10: 9,498,268 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 877.1

Radius: 12

Gravity: 6.09 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 3.24 AU - 5.36 AU

Year: 5757 Days

Day: 7.3 Hours

Environment

Temp: -219 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 30,055,366 km

• M1: 149,299 km (0.1 R)
• M2: 536,458 km (0.091 R)
• M3: 1,137,243 km (0.105 R)
• M4: 2,180,389 km (0.07 R)
• M5: 2,731,807 km (0.114 R)
• M6: 3,267,965 km (0.091 R)
• M7: 3,779,291 km (0.091 R)
• M8: 4,852,057 km (0.09 R)
• M9: 5,766,549 km (0.065 R)
• M10: 8,698,667 km (0.114 R)
• M11: 9,119,037 km (0.118 R)
• M12: 9,553,021 km (0.119 R)
• M13: 12,506,382 km (0.098 R)
• M14: 14,277,022 km (0.118 R)
• M15: 14,863,147 km (0.069 R)
• M16: 17,369,809 km (0.096 R)
• M17: 23,608,938 km (0.053 R)
• M18: 24,098,721 km (0.038 R)
• M19: 32,485,776 km (0.111 R)
• M20: 34,119,235 km (0.059 R)
• M21: 34,745,751 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 427.2

Radius: 10.3

Gravity: 4.03 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 4.34 AU - 4.78 AU

Year: 6287 Days

Day: 5 Hours

Environment

Temp: -223 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 30,055,366 km

• M1: 128,056 km (0.075 R)
• M2: 451,187 km (0.115 R)
• M3: 1,136,645 km (0.061 R)
• M4: 1,796,371 km (0.072 R)
• M5: 2,345,395 km (0.059 R)
• M6: 3,869,050 km (0.117 R)
• M7: 5,554,569 km (0.104 R)
• M8: 8,346,813 km (0.087 R)
• M9: 10,218,133 km (0.113 R)
• M10: 10,975,697 km (0.074 R)
• M11: 15,566,107 km (0.09 R)
• M12: 16,568,712 km (0.084 R)
• M13: 17,739,764 km (0.068 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 548 - 17,579 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit