🌌 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 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.11

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.42 AU - 0.66 AU

Year: 260 Days

Day: 45.4 Hours

Environment

Temp: -122 °C

Axial Tilt: 18 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,581,028 km

• M1: 345,272 km (0.087 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.7

Radius: 13.1

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.74 AU - 1.08 AU

Year: 569 Days

Day: 12.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,581,028 km

• M1: 162,912 km (0.114 R)
• M2: 802,443 km (0.094 R)
• M3: 1,228,797 km (0.116 R)
• M4: 1,711,400 km (0.061 R)
• M5: 2,240,677 km (0.085 R)
• M6: 2,665,385 km (0.066 R)
• M7: 3,093,684 km (0.116 R)
• M8: 4,277,452 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 610.6

Radius: 13.6

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.03 AU - 1.41 AU

Year: 884 Days

Day: 5.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,581,028 km

• M1: 169,195 km (0.059 R)
• M2: 616,942 km (0.091 R)
• M3: 1,049,429 km (0.042 R)
• M4: 1,705,117 km (0.074 R)
• M5: 2,259,077 km (0.087 R)
• M6: 2,728,964 km (0.069 R)
• M7: 3,678,911 km (0.04 R)
• M8: 4,548,822 km (0.036 R)
• M9: 5,984,364 km (0.101 R)
• M10: 6,632,272 km (0.114 R)
• M11: 7,165,738 km (0.106 R)
• M12: 7,945,891 km (0.113 R)
• M13: 8,651,694 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271

Radius: 8.5

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.62 AU - 2.4 AU

Year: 1869 Days

Day: 5 Hours

Environment

Temp: -186 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 38,581,028 km

• M1: 105,766 km (0.118 R)
• M2: 422,764 km (0.083 R)
• M3: 835,205 km (0.053 R)
• M4: 1,289,085 km (0.071 R)
• M5: 1,556,267 km (0.078 R)
• M6: 1,851,124 km (0.039 R)
• M7: 2,118,306 km (0.092 R)
• M8: 2,387,732 km (0.098 R)
• M9: 2,692,911 km (0.12 R)
• M10: 3,397,667 km (0.111 R)
• M11: 4,254,713 km (0.072 R)
• M12: 4,613,299 km (0.071 R)
• M13: 4,991,931 km (0.084 R)
• M14: 6,529,498 km (0.104 R)
• M15: 6,813,585 km (0.033 R)
• M16: 8,752,223 km (0.035 R)
• M17: 9,156,437 km (0.066 R)
• M18: 9,786,394 km (0.079 R)
• M19: 10,380,746 km (0.049 R)
• M20: 10,899,850 km (0.067 R)
• M21: 11,300,474 km (0.066 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 185.5

Radius: 12.7

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 2.33 AU - 2.47 AU

Year: 2439 Days

Day: 13.3 Hours

Environment

Temp: -186 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 38,581,028 km

• M1: 165,754 km (0.041 R)
• M2: 905,516 km (0.104 R)
• M3: 1,520,962 km (0.095 R)
• M4: 2,359,009 km (0.029 R)
• M5: 3,655,873 km (0.103 R)
• M6: 4,543,587 km (0.058 R)
• M7: 5,198,526 km (0.117 R)
• M8: 6,321,408 km (0.096 R)
• M9: 6,842,607 km (0.065 R)
• M10: 9,522,652 km (0.113 R)
• M11: 10,630,125 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 50.1

Radius: 14.2

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 3.65 AU - 6.05 AU

Year: 7007 Days

Day: 5.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,581,028 km

• M1: 178,919 km (0.09 R)
• M2: 759,209 km (0.076 R)
• M3: 1,377,048 km (0.095 R)
• M4: 2,050,239 km (0.085 R)
• M5: 4,068,015 km (0.105 R)
• M6: 5,335,857 km (0.045 R)
• M7: 7,654,325 km (0.105 R)
• M8: 8,517,504 km (0.098 R)
• M9: 9,085,378 km (0.032 R)
• M10: 10,438,191 km (0.07 R)
• M11: 12,194,770 km (0.118 R)
• M12: 13,330,965 km (0.106 R)
• M13: 14,669,866 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 355.1

Radius: 5.9

Gravity: 10.2 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 6.12 AU - 6.2 AU

Year: 10030 Days

Day: 20.8 Hours

Environment

Temp: -229 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 38,581,028 km

• M1: 73,453 km (0.106 R)
• M2: 477,816 km (0.027 R)
• M3: 696,976 km (0.102 R)
• M4: 900,729 km (0.095 R)
• M5: 1,133,952 km (0.089 R)
• M6: 1,521,111 km (0.104 R)
• M7: 2,556,328 km (0.05 R)
• M8: 3,870,695 km (0.117 R)
• M9: 4,332,055 km (0.073 R)
• M10: 4,915,786 km (0.114 R)
• M11: 5,211,541 km (0.117 R)
• M12: 8,474,420 km (0.046 R)
• M13: 8,986,942 km (0.091 R)
• M14: 9,933,149 km (0.048 R)
• M15: 10,406,327 km (0.111 R)
• M16: 12,181,455 km (0.079 R)
• M17: 12,559,190 km (0.091 R)
• M18: 15,932,024 km (0.045 R)
• M19: 16,645,905 km (0.107 R)
• M20: 17,313,111 km (0.087 R)
• M21: 18,067,533 km (0.119 R)
• M22: 19,348,989 km (0.096 R)
• M23: 20,613,839 km (0.063 R)
• M24: 24,651,934 km (0.043 R)
• M25: 31,047,243 km (0.108 R)
• M26: 32,261,828 km (0.119 R)
• M27: 33,297,793 km (0.085 R)
• M28: 34,677,534 km (0.094 R)
• M29: 35,545,352 km (0.12 R)
• M30: 37,098,626 km (0.099 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: 259 - 19,836 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit