🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.44 AU - 0.58 AU

Year: 235 Days

Day: 14.9 Hours

Environment

Temp: -111 °C

Axial Tilt: 15.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,166,519 km

• M1: 186,549 km (0.111 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 185.6

Radius: 13.1

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.62 AU - 0.98 AU

Year: 462 Days

Day: 7.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 64,166,519 km

• M1: 163,211 km (0.063 R)
• M2: 578,645 km (0.114 R)
• M3: 990,338 km (0.067 R)
• M4: 1,510,938 km (0.057 R)
• M5: 2,474,199 km (0.067 R)
• M6: 3,021,129 km (0.063 R)
• M7: 3,467,978 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.1

Radius: 11.3

Gravity: 7.12 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 1.12 AU - 1.22 AU

Year: 817 Days

Day: 10.7 Hours

Environment

Temp: -166 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 64,166,519 km

• M1: 140,472 km (0.118 R)
• M2: 771,027 km (0.078 R)
• M3: 1,256,173 km (0.089 R)
• M4: 1,663,229 km (0.064 R)
• M5: 3,147,838 km (0.07 R)
• M6: 3,552,351 km (0.069 R)
• M7: 4,119,177 km (0.067 R)
• M8: 4,888,858 km (0.095 R)
• M9: 5,591,520 km (0.114 R)
• M10: 7,509,364 km (0.098 R)
• M11: 7,955,316 km (0.092 R)
• M12: 8,340,380 km (0.083 R)
• M13: 8,738,012 km (0.104 R)
• M14: 9,831,273 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.9

Radius: 12.5

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.03 AU - 1.59 AU

Year: 968 Days

Day: 12.9 Hours

Environment

Temp: -177 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 64,166,519 km

• M1: 155,881 km (0.077 R)
• M2: 840,740 km (0.08 R)
• M3: 1,256,173 km (0.114 R)
• M4: 1,766,152 km (0.07 R)
• M5: 2,406,282 km (0.071 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 11.5

Radius: 12.7

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 2.49 AU - 3.89 AU

Year: 3679 Days

Day: 11.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 64,166,519 km

• M1: 158,275 km (0.034 R)
• M2: 560,094 km (0.076 R)
• M3: 1,062,294 km (0.095 R)
• M4: 1,525,150 km (0.117 R)
• M5: 3,508,220 km (0.032 R)
• M6: 5,276,915 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 528.1

Radius: 13.8

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 5.41 AU - 5.49 AU

Year: 8215 Days

Day: 6.3 Hours

Environment

Temp: -208 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 64,166,519 km

• M1: 171,738 km (0.096 R)
• M2: 736,022 km (0.101 R)
• M3: 2,100,055 km (0.091 R)
• M4: 3,508,369 km (0.108 R)
• M5: 4,310,962 km (0.076 R)
• M6: 5,114,602 km (0.082 R)
• M7: 5,630,714 km (0.089 R)
• M8: 6,215,193 km (0.05 R)
• M9: 6,662,192 km (0.091 R)
• M10: 7,934,521 km (0.111 R)
• M11: 8,420,415 km (0.087 R)
• M12: 9,186,656 km (0.117 R)
• M13: 10,711,806 km (0.05 R)
• M14: 14,141,936 km (0.089 R)
• M15: 16,041,679 km (0.035 R)
• M16: 18,737,732 km (0.057 R)
• M17: 21,644,568 km (0.073 R)
• M18: 22,355,906 km (0.119 R)
• M19: 27,320,012 km (0.049 R)
• M20: 30,449,599 km (0.049 R)
• M21: 32,253,750 km (0.109 R)
• M22: 36,074,330 km (0.056 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 139.2

Radius: 5.2

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 5.59 AU - 8.27 AU

Year: 11779 Days

Day: 22.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 64,166,519 km

• M1: 64,626 km (0.103 R)
• M2: 250,726 km (0.104 R)
• M3: 417,228 km (0.093 R)
• M4: 584,778 km (0.116 R)
• M5: 1,896,751 km (0.112 R)
• M6: 2,195,050 km (0.101 R)
• M7: 2,646,536 km (0.093 R)
• M8: 3,915,275 km (0.072 R)
• M9: 4,734,473 km (0.082 R)
• M10: 5,170,252 km (0.12 R)
• M11: 11,626,447 km (0.115 R)
• M12: 13,034,462 km (0.083 R)
• M13: 13,297,456 km (0.081 R)
• M14: 13,833,764 km (0.039 R)
• M15: 14,052,326 km (0.111 R)
• M16: 15,412,321 km (0.078 R)
• M17: 19,463,880 km (0.026 R)
• M18: 20,790,813 km (0.084 R)
• M19: 23,936,108 km (0.094 R)
• M20: 26,117,095 km (0.077 R)
• M21: 27,729,013 km (0.087 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 308.6

Radius: 4.1

Gravity: 18.36 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 8.19 AU - 13.51 AU

Year: 23076 Days

Day: 16.5 Hours

Environment

Temp: -240 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,166,519 km

• M1: 71,209 km (0.076 R)
• M2: 242,498 km (0.093 R)
• M3: 579,393 km (0.052 R)
• M4: 2,292,887 km (0.092 R)
• M5: 2,615,719 km (0.056 R)
• M6: 3,767,174 km (0.088 R)
• M7: 6,792,940 km (0.101 R)
• M8: 7,053,390 km (0.114 R)
• M9: 8,757,609 km (0.079 R)
• M10: 9,435,138 km (0.069 R)
• M11: 12,113,239 km (0.053 R)
• M12: 15,930,677 km (0.11 R)
• M13: 20,659,017 km (0.073 R)
• M14: 40,548,204 km (0.067 R)
• M15: 54,158,618 km (0.099 R)
• M16: 55,195,780 km (0.119 R)
• M17: 57,667,286 km (0.077 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 405 - 18,944 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit