🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.5 AU - 0.78 AU

Year: 326 Days

Day: 41.4 Hours

Environment

Temp: -126 °C

Axial Tilt: 16 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 996

Radius: 14

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.59 AU - 0.79 AU

Year: 364 Days

Day: 8.5 Hours

Environment

Temp: -138 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,698,286 km

• M1: 174,132 km (0.1 R)
• M2: 609,611 km (0.074 R)
• M3: 1,122,582 km (0.109 R)
• M4: 1,623,137 km (0.116 R)
• M5: 2,119,503 km (0.108 R)
• M6: 2,570,241 km (0.054 R)
• M7: 3,020,381 km (0.053 R)
• M8: 3,872,790 km (0.119 R)
• M9: 4,627,810 km (0.109 R)
• M10: 5,237,122 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 347.1

Radius: 15

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.58 AU - 0.94 AU

Year: 421 Days

Day: 10.4 Hours

Environment

Temp: -145 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 47,698,286 km

• M1: 186,549 km (0.094 R)
• M2: 680,670 km (0.094 R)
• M3: 1,286,242 km (0.085 R)
• M4: 1,935,198 km (0.042 R)
• M5: 2,425,879 km (0.055 R)
• M6: 2,922,843 km (0.096 R)
• M7: 4,573,506 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 283.1

Radius: 10.1

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.74 AU - 1.1 AU

Year: 561 Days

Day: 7.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,698,286 km

• M1: 125,662 km (0.051 R)
• M2: 467,344 km (0.073 R)
• M3: 860,337 km (0.048 R)
• M4: 1,212,341 km (0.059 R)
• M5: 1,587,233 km (0.114 R)
• M6: 1,961,228 km (0.09 R)
• M7: 2,605,546 km (0.118 R)
• M8: 3,206,930 km (0.087 R)
• M9: 3,558,784 km (0.091 R)
• M10: 4,559,893 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 213.2

Radius: 9.8

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.09 AU - 1.53 AU

Year: 953 Days

Day: 9.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 47,698,286 km

• M1: 121,922 km (0.093 R)
• M2: 519,853 km (0.04 R)
• M3: 964,009 km (0.092 R)
• M4: 1,303,596 km (0.058 R)
• M5: 1,916,498 km (0.068 R)
• M6: 2,444,579 km (0.085 R)
• M7: 3,887,151 km (0.053 R)
• M8: 4,253,516 km (0.105 R)
• M9: 5,322,543 km (0.106 R)
• M10: 6,330,084 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 734.2

Radius: 10.5

Gravity: 6.66 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 1.34 AU - 1.96 AU

Year: 1348 Days

Day: 9 Hours

Environment

Temp: -185 °C

Axial Tilt: 46.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 47,698,286 km

• M1: 130,898 km (0.073 R)
• M2: 471,682 km (0.109 R)
• M3: 953,537 km (0.05 R)
• M4: 1,293,573 km (0.06 R)
• M5: 1,706,912 km (0.065 R)
• M6: 2,096,016 km (0.11 R)
• M7: 2,956,952 km (0.106 R)
• M8: 3,429,531 km (0.079 R)
• M9: 3,935,022 km (0.05 R)
• M10: 4,360,030 km (0.069 R)
• M11: 4,914,290 km (0.087 R)
• M12: 6,592,180 km (0.057 R)
• M13: 8,079,931 km (0.111 R)
• M14: 9,940,031 km (0.077 R)
• M15: 10,297,719 km (0.109 R)
• M16: 11,247,067 km (0.077 R)
• M17: 11,996,702 km (0.046 R)
• M18: 12,589,858 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 458.7

Radius: 3

Gravity: 50.97 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 5.9 AU - 8.52 AU

Year: 12309 Days

Day: 20.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,698,286 km

• M1: 44,431 km (0.098 R)
• M2: 169,345 km (0.08 R)
• M3: 277,953 km (0.118 R)
• M4: 1,105,229 km (0.073 R)
• M5: 2,358,410 km (0.092 R)
• M6: 3,378,668 km (0.104 R)
• M7: 3,477,253 km (0.109 R)
• M8: 4,109,154 km (0.076 R)
• M9: 5,562,049 km (0.082 R)
• M10: 5,734,236 km (0.029 R)
• M11: 6,089,531 km (0.111 R)
• M12: 12,302,330 km (0.052 R)
• M13: 14,839,062 km (0.065 R)
• M14: 22,009,437 km (0.104 R)
• M15: 24,586,709 km (0.101 R)
• M16: 28,056,781 km (0.088 R)
• M17: 29,282,287 km (0.041 R)
• M18: 35,474,891 km (0.106 R)
• M19: 41,171,129 km (0.107 R)
• M20: 41,431,729 km (0.103 R)
• M21: 47,161,926 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 130

Radius: 7.8

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 10.55 AU - 11.19 AU

Year: 22786 Days

Day: 22.7 Hours

Environment

Temp: -241 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 47,698,286 km

• M1: 96,939 km (0.088 R)
• M2: 365,468 km (0.083 R)
• M3: 691,441 km (0.053 R)
• M4: 1,382,284 km (0.058 R)
• M5: 2,137,903 km (0.07 R)
• M6: 2,587,146 km (0.114 R)
• M7: 3,075,433 km (0.101 R)
• M8: 4,069,511 km (0.099 R)
• M9: 7,427,085 km (0.101 R)
• M10: 15,396,912 km (0.081 R)
• M11: 15,802,472 km (0.046 R)
• M12: 16,284,626 km (0.114 R)
• M13: 16,847,712 km (0.078 R)
• M14: 17,206,149 km (0.094 R)
• M15: 18,538,767 km (0.053 R)
• M16: 21,998,367 km (0.028 R)
• M17: 23,744,922 km (0.096 R)
• M18: 25,300,740 km (0.118 R)
• M19: 27,809,646 km (0.069 R)
• M20: 28,411,328 km (0.073 R)
• M21: 29,537,052 km (0.091 R)
• M22: 34,108,913 km (0.116 R)
• M23: 39,633,861 km (0.095 R)
• M24: 43,541,358 km (0.119 R)
• M25: 46,565,030 km (0.112 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 283 - 19,620 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit