🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.04

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.71 AU - 0.73 AU

Year: 219 Days

Day: 12.5 Hours

Environment

Temp: 214 °C

Axial Tilt: 34.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.16 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.08

Radius: 1.03

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.96 AU - 1.36 AU

Year: 447 Days

Day: 36.3 Hours

Environment

Temp: 29 °C

Axial Tilt: 5.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.28

Radius: 1.39

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 1.84 AU - 2.44 AU

Year: 1121 Days

Day: 12.4 Hours

Environment

Temp: -61 °C

Axial Tilt: 20.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.75 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 7.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 743.2

Radius: 12.6

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 5.95 AU - 8.77 AU

Year: 7151 Days

Day: 10.8 Hours

Environment

Temp: -157 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 74,364,263 km

• M1: 156,928 km (0.094 R)
• M2: 726,597 km (0.109 R)
• M3: 1,133,503 km (0.098 R)
• M4: 1,553,723 km (0.105 R)
• M5: 2,326,396 km (0.104 R)
• M6: 2,782,221 km (0.1 R)
• M7: 3,567,460 km (0.099 R)
• M8: 4,361,227 km (0.09 R)
• M9: 5,031,276 km (0.063 R)
• M10: 6,164,180 km (0.115 R)
• M11: 6,612,824 km (0.09 R)
• M12: 7,083,310 km (0.099 R)
• M13: 8,844,376 km (0.112 R)
• M14: 9,371,559 km (0.081 R)
• M15: 12,766,383 km (0.104 R)
• M16: 15,989,918 km (0.114 R)
• M17: 19,868,991 km (0.067 R)
• M18: 23,161,042 km (0.068 R)
• M19: 24,164,694 km (0.108 R)
• M20: 28,282,375 km (0.101 R)
• M21: 29,332,253 km (0.069 R)
• M22: 33,475,067 km (0.112 R)
• M23: 34,649,709 km (0.091 R)
• M24: 36,406,886 km (0.068 R)
• M25: 37,992,623 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 10.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 798.3

Radius: 9.7

Gravity: 8.48 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 10.53 AU - 11.03 AU

Year: 12677 Days

Day: 12 Hours

Environment

Temp: -176 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 74,364,263 km

• M1: 122,820 km (0.105 R)
• M2: 698,472 km (0.115 R)
• M3: 1,075,459 km (0.093 R)
• M4: 1,543,850 km (0.079 R)
• M5: 3,618,174 km (0.12 R)
• M6: 4,743,449 km (0.067 R)
• M7: 5,075,108 km (0.099 R)
• M8: 7,490,814 km (0.08 R)
• M9: 7,942,001 km (0.098 R)
• M10: 9,200,269 km (0.047 R)
• M11: 9,984,012 km (0.113 R)
• M12: 15,942,196 km (0.033 R)
• M13: 26,105,876 km (0.101 R)
• M14: 27,038,768 km (0.04 R)
• M15: 30,993,537 km (0.053 R)
• M16: 33,470,130 km (0.056 R)
• M17: 41,407,344 km (0.119 R)
• M18: 42,533,367 km (0.114 R)
• M19: 58,027,668 km (0.087 R)

Planet 6 - Ice Giant

Semi-Major Axis: 13.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 192.8

Radius: 7.7

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 13.32 AU - 13.32 AU

Year: 17411 Days

Day: 24.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 74,364,263 km

• M1: 96,341 km (0.119 R)
• M2: 988,692 km (0.09 R)
• M3: 1,345,334 km (0.098 R)
• M4: 1,696,589 km (0.115 R)
• M5: 2,265,809 km (0.067 R)
• M6: 3,087,251 km (0.118 R)
• M7: 3,986,783 km (0.073 R)
• M8: 16,678,667 km (0.113 R)
• M9: 19,082,405 km (0.12 R)
• M10: 20,646,451 km (0.09 R)
• M11: 22,977,186 km (0.061 R)
• M12: 24,836,238 km (0.091 R)
• M13: 32,620,414 km (0.084 R)
• M14: 40,611,334 km (0.097 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 772.1

Radius: 6.1

Gravity: 20.75 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 10.98 AU - 16.46 AU

Year: 18201 Days

Day: 19.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 145.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 74,364,263 km

• M1: 111,151 km (0.109 R)
• M2: 956,379 km (0.112 R)
• M3: 1,181,823 km (0.087 R)
• M4: 1,850,526 km (0.027 R)
• M5: 2,122,046 km (0.085 R)
• M6: 3,099,967 km (0.089 R)
• M7: 4,088,211 km (0.11 R)
• M8: 4,482,551 km (0.057 R)
• M9: 5,819,058 km (0.055 R)
• M10: 7,073,586 km (0.091 R)
• M11: 7,937,364 km (0.119 R)
• M12: 9,417,784 km (0.06 R)
• M13: 13,689,252 km (0.051 R)
• M14: 14,051,878 km (0.086 R)
• M15: 15,962,242 km (0.107 R)
• M16: 18,739,976 km (0.108 R)
• M17: 21,143,565 km (0.057 R)
• M18: 23,434,506 km (0.095 R)
• M19: 29,333,001 km (0.076 R)
• M20: 37,262,137 km (0.113 R)
• M21: 38,397,435 km (0.082 R)
• M22: 51,569,228 km (0.044 R)
• M23: 54,775,410 km (0.066 R)
• M24: 58,491,122 km (0.09 R)
• M25: 66,213,065 km (0.076 R)
• M26: 67,667,455 km (0.068 R)
• M27: 68,930,809 km (0.116 R)
• M28: 71,504,491 km (0.054 R)
• M29: 73,919,449 km (0.1 R)

Kuiper Belt

Range: 30.6 - 47.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 241 - 12,607 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit