🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 114.2

Radius: 13.5

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.41 AU - 0.65 AU

Year: 257 Days

Day: 10.2 Hours

Environment

Temp: -137 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 31,213,747 km

• M1: 167,998 km (0.106 R)
• M2: 780,602 km (0.077 R)
• M3: 1,685,669 km (0.1 R)
• M4: 2,217,190 km (0.113 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 204.2

Radius: 14.2

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.71 AU - 0.89 AU

Year: 477 Days

Day: 8.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 31,213,747 km

• M1: 176,525 km (0.072 R)
• M2: 677,978 km (0.099 R)
• M3: 1,133,802 km (0.105 R)
• M4: 1,670,410 km (0.049 R)
• M5: 2,196,845 km (0.1 R)
• M6: 2,672,566 km (0.115 R)
• M7: 3,496,701 km (0.12 R)
• M8: 3,975,115 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.4

Radius: 9.9

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.1 AU - 1.14 AU

Year: 790 Days

Day: 12.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 31,213,747 km

• M1: 123,119 km (0.09 R)
• M2: 577,448 km (0.086 R)
• M3: 1,294,171 km (0.044 R)
• M4: 1,783,955 km (0.052 R)
• M5: 2,226,316 km (0.073 R)
• M6: 2,570,989 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 23.7

Radius: 9.5

Gravity: 0.26 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.05 AU - 1.27 AU

Year: 833 Days

Day: 5.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 31,213,747 km

• M1: 118,182 km (0.108 R)
• M2: 417,079 km (0.031 R)
• M3: 2,665,535 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 269.6

Radius: 13.2

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.59 AU - 1.69 AU

Year: 1401 Days

Day: 11.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 127.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,213,747 km

• M1: 166,203 km (0.088 R)
• M2: 679,025 km (0.12 R)
• M3: 1,106,276 km (0.065 R)
• M4: 1,906,326 km (0.089 R)
• M5: 2,525,362 km (0.076 R)
• M6: 4,202,503 km (0.114 R)
• M7: 5,353,509 km (0.091 R)
• M8: 7,133,126 km (0.116 R)
• M9: 7,773,554 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 285.5

Radius: 8.3

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.86 AU - 2.32 AU

Year: 2015 Days

Day: 8.6 Hours

Environment

Temp: -203 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 31,213,747 km

• M1: 103,223 km (0.084 R)
• M2: 400,773 km (0.094 R)
• M3: 849,566 km (0.033 R)
• M4: 1,298,659 km (0.113 R)
• M5: 1,565,392 km (0.081 R)
• M6: 1,828,834 km (0.082 R)
• M7: 2,508,756 km (0.093 R)
• M8: 3,053,891 km (0.055 R)
• M9: 3,991,122 km (0.09 R)
• M10: 4,830,665 km (0.075 R)
• M11: 6,636,311 km (0.098 R)
• M12: 7,703,393 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.2

Radius: 10.4

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 5.09 AU - 6.15 AU

Year: 8885 Days

Day: 5.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 31,213,747 km

• M1: 132,544 km (0.093 R)
• M2: 510,877 km (0.068 R)
• M3: 1,824,496 km (0.061 R)
• M4: 2,635,316 km (0.115 R)
• M5: 3,104,156 km (0.069 R)
• M6: 4,070,408 km (0.111 R)
• M7: 4,724,600 km (0.033 R)
• M8: 5,999,323 km (0.04 R)
• M9: 9,375,897 km (0.091 R)
• M10: 15,552,643 km (0.098 R)
• M11: 18,268,593 km (0.111 R)
• M12: 25,248,231 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 39.5

Radius: 4.6

Gravity: 1.87 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 8.28 AU - 12.22 AU

Year: 21883 Days

Day: 15.7 Hours

Environment

Temp: -238 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 31,213,747 km

• M1: 57,296 km (0.097 R)
• M2: 325,675 km (0.094 R)
• M3: 691,142 km (0.085 R)
• M4: 2,332,680 km (0.036 R)
• M5: 2,821,266 km (0.057 R)
• M6: 3,070,197 km (0.088 R)
• M7: 5,470,345 km (0.11 R)
• M8: 5,766,699 km (0.096 R)
• M9: 6,956,600 km (0.066 R)
• M10: 10,516,581 km (0.101 R)
• M11: 14,336,712 km (0.099 R)
• M12: 21,873,901 km (0.114 R)
• M13: 23,691,067 km (0.079 R)
• M14: 24,318,480 km (0.089 R)
• M15: 25,606,368 km (0.12 R)
• M16: 26,434,093 km (0.088 R)
• M17: 29,381,471 km (0.115 R)
• M18: 30,564,042 km (0.076 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 488 - 19,969 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit