🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.49

Radius: 1.17

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.6 AU - 0.72 AU

Year: 346 Days

Day: 18.9 Hours

Environment

Temp: -131 °C

Axial Tilt: 42.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 944.3

Radius: 9.4

Gravity: 10.69 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.73 AU - 0.77 AU

Year: 419 Days

Day: 12.8 Hours

Environment

Temp: -145 °C

Axial Tilt: 49.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 10,556,790 km

• M1: 116,836 km (0.025 R)
• M2: 463,753 km (0.101 R)
• M3: 869,912 km (0.07 R)
• M4: 1,233,135 km (0.058 R)
• M5: 1,530,985 km (0.118 R)
• M6: 1,951,205 km (0.105 R)
• M7: 2,267,006 km (0.101 R)
• M8: 2,762,923 km (0.076 R)
• M9: 3,245,975 km (0.114 R)
• M10: 3,539,486 km (0.112 R)
• M11: 3,918,118 km (0.094 R)
• M12: 4,294,656 km (0.072 R)
• M13: 6,049,439 km (0.034 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.8

Radius: 12.5

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.74 AU - 0.86 AU

Year: 462 Days

Day: 5.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 10,556,790 km

• M1: 155,582 km (0.034 R)
• M2: 620,981 km (0.11 R)
• M3: 1,095,206 km (0.061 R)
• M4: 1,701,676 km (0.085 R)
• M5: 2,404,038 km (0.114 R)
• M6: 3,214,110 km (0.115 R)
• M7: 3,651,385 km (0.071 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.8

Radius: 11.4

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.78 AU - 0.88 AU

Year: 488 Days

Day: 6.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 10,556,790 km

• M1: 143,016 km (0.037 R)
• M2: 529,427 km (0.098 R)
• M3: 908,209 km (0.068 R)
• M4: 1,330,523 km (0.032 R)
• M5: 1,834,219 km (0.109 R)
• M6: 2,543,613 km (0.058 R)
• M7: 3,666,943 km (0.104 R)
• M8: 4,065,322 km (0.084 R)
• M9: 4,533,115 km (0.054 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 888.8

Radius: 9.6

Gravity: 9.64 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.71 AU - 0.95 AU

Year: 488 Days

Day: 10.2 Hours

Environment

Temp: -139 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 10,556,790 km

• M1: 125,662 km (0.108 R)
• M2: 461,509 km (0.117 R)
• M3: 1,101,340 km (0.097 R)
• M4: 1,594,713 km (0.101 R)
• M5: 1,893,610 km (0.064 R)
• M6: 2,597,019 km (0.098 R)
• M7: 3,204,686 km (0.089 R)
• M8: 3,634,031 km (0.081 R)
• M9: 4,394,737 km (0.106 R)
• M10: 4,974,877 km (0.038 R)
• M11: 5,292,174 km (0.08 R)
• M12: 6,211,603 km (0.107 R)
• M13: 6,659,499 km (0.069 R)

Planet 6 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 622.9

Radius: 14.6

Gravity: 2.92 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.77 AU - 1.19 AU

Year: 626 Days

Day: 14.3 Hours

Environment

Temp: -160 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 10,556,790 km

• M1: 181,612 km (0.116 R)
• M2: 659,577 km (0.096 R)
• M3: 1,422,526 km (0.07 R)
• M4: 1,917,097 km (0.095 R)
• M5: 2,437,398 km (0.063 R)
• M6: 3,135,123 km (0.098 R)
• M7: 3,991,720 km (0.118 R)
• M8: 4,568,270 km (0.072 R)
• M9: 5,406,168 km (0.111 R)
• M10: 6,422,536 km (0.085 R)
• M11: 6,945,680 km (0.077 R)

Asteroid Belt

Center: 2.16 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.7

Radius: 9.2

Gravity: 8.44 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 3.15 AU - 3.53 AU

Year: 3941 Days

Day: 11 Hours

Environment

Temp: -214 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 10,556,790 km

• M1: 114,442 km (0.081 R)
• M2: 483,201 km (0.111 R)
• M3: 775,665 km (0.109 R)
• M4: 1,318,256 km (0.08 R)
• M5: 1,669,811 km (0.069 R)
• M6: 2,241,425 km (0.093 R)
• M7: 2,713,705 km (0.109 R)
• M8: 3,138,264 km (0.113 R)
• M9: 3,586,310 km (0.107 R)
• M10: 4,419,869 km (0.051 R)
• M11: 6,497,335 km (0.106 R)
• M12: 7,560,976 km (0.099 R)
• M13: 8,223,694 km (0.067 R)
• M14: 9,077,300 km (0.116 R)
• M15: 10,572,830 km (0.113 R)
• M16: 14,565,896 km (0.079 R)
• M17: 15,757,593 km (0.081 R)
• M18: 16,837,988 km (0.103 R)
• M19: 18,027,740 km (0.115 R)
• M20: 18,581,103 km (0.105 R)
• M21: 19,272,843 km (0.087 R)
• M22: 21,314,405 km (0.106 R)
• M23: 23,861,459 km (0.116 R)
• M24: 24,829,207 km (0.07 R)
• M25: 26,133,701 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 31

Radius: 10.1

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 3.69 AU - 3.99 AU

Year: 4859 Days

Day: 12 Hours

Environment

Temp: -200 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 10,556,790 km

• M1: 126,111 km (0.103 R)
• M2: 813,364 km (0.102 R)
• M3: 1,174,343 km (0.08 R)
• M4: 1,678,638 km (0.094 R)
• M5: 2,401,345 km (0.106 R)
• M6: 2,746,318 km (0.119 R)
• M7: 4,722,805 km (0.105 R)
• M8: 5,587,480 km (0.086 R)
• M9: 8,327,964 km (0.084 R)
• M10: 8,956,574 km (0.051 R)
• M11: 10,185,820 km (0.042 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 209 - 13,265 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit