🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.4

Radius: 0.69

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.44 AU - 0.72 AU

Year: 285 Days

Day: 37.8 Hours

Environment

Temp: -126 °C

Axial Tilt: 14.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 904.6

Radius: 11.4

Gravity: 6.96 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.88 AU - 1 AU

Year: 588 Days

Day: 12.2 Hours

Environment

Temp: -151 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,042,221 km

• M1: 142,417 km (0.101 R)
• M2: 577,298 km (0.12 R)
• M3: 1,089,521 km (0.082 R)
• M4: 1,627,326 km (0.049 R)
• M5: 3,156,665 km (0.118 R)
• M6: 3,558,485 km (0.098 R)
• M7: 4,172,733 km (0.039 R)
• M8: 4,593,702 km (0.079 R)
• M9: 5,008,686 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 776.1

Radius: 8.7

Gravity: 10.25 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.93 AU - 1.45 AU

Year: 838 Days

Day: 12.8 Hours

Environment

Temp: -164 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 73,042,221 km

• M1: 108,159 km (0.079 R)
• M2: 436,078 km (0.089 R)
• M3: 892,501 km (0.042 R)
• M4: 1,174,343 km (0.052 R)
• M5: 1,501,065 km (0.12 R)
• M6: 2,091,378 km (0.038 R)
• M7: 2,706,824 km (0.098 R)
• M8: 3,625,205 km (0.096 R)
• M9: 4,650,549 km (0.111 R)
• M10: 4,952,886 km (0.119 R)
• M11: 5,249,389 km (0.071 R)
• M12: 6,468,911 km (0.106 R)
• M13: 7,967,433 km (0.079 R)
• M14: 8,558,494 km (0.071 R)
• M15: 8,932,489 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824

Radius: 13.1

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.5 AU - 1.54 AU

Year: 1210 Days

Day: 7.7 Hours

Environment

Temp: -178 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 73,042,221 km

• M1: 162,912 km (0.113 R)
• M2: 659,577 km (0.041 R)
• M3: 1,148,313 km (0.049 R)
• M4: 1,558,361 km (0.103 R)
• M5: 1,995,336 km (0.045 R)
• M6: 2,729,413 km (0.075 R)
• M7: 3,225,928 km (0.1 R)
• M8: 3,669,337 km (0.106 R)
• M9: 4,101,674 km (0.09 R)
• M10: 4,931,344 km (0.067 R)
• M11: 6,254,388 km (0.107 R)
• M12: 6,801,318 km (0.089 R)
• M13: 7,405,992 km (0.12 R)
• M14: 8,184,200 km (0.103 R)
• M15: 8,665,457 km (0.116 R)
• M16: 9,225,551 km (0.029 R)
• M17: 10,715,546 km (0.086 R)
• M18: 11,257,689 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 608.5

Radius: 14.2

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 2.06 AU - 2.54 AU

Year: 2252 Days

Day: 6.4 Hours

Environment

Temp: -188 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 73,042,221 km

• M1: 176,825 km (0.112 R)
• M2: 740,210 km (0.113 R)
• M3: 1,391,859 km (0.085 R)
• M4: 2,274,037 km (0.104 R)
• M5: 2,849,391 km (0.085 R)
• M6: 3,840,925 km (0.115 R)
• M7: 4,297,648 km (0.072 R)
• M8: 5,368,020 km (0.071 R)
• M9: 8,594,248 km (0.111 R)
• M10: 9,348,221 km (0.08 R)
• M11: 11,177,654 km (0.108 R)
• M12: 11,758,542 km (0.071 R)
• M13: 13,065,429 km (0.09 R)
• M14: 16,406,847 km (0.091 R)
• M15: 16,854,893 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 616.3

Radius: 11.4

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 2.03 AU - 2.79 AU

Year: 2416 Days

Day: 6.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 73,042,221 km

• M1: 141,819 km (0.069 R)
• M2: 553,961 km (0.073 R)
• M3: 1,222,663 km (0.077 R)
• M4: 2,074,324 km (0.062 R)
• M5: 2,747,963 km (0.068 R)
• M6: 3,474,261 km (0.092 R)
• M7: 5,991,395 km (0.053 R)
• M8: 6,705,425 km (0.044 R)
• M9: 7,068,948 km (0.104 R)
• M10: 7,896,972 km (0.1 R)
• M11: 8,271,117 km (0.094 R)
• M12: 8,657,079 km (0.109 R)
• M13: 9,122,777 km (0.101 R)
• M14: 9,535,069 km (0.114 R)
• M15: 10,249,997 km (0.105 R)
• M16: 10,620,701 km (0.099 R)
• M17: 11,077,274 km (0.053 R)
• M18: 17,419,625 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 54.4

Radius: 13.3

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 2.32 AU - 2.56 AU

Year: 2461 Days

Day: 12.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 73,042,221 km

• M1: 166,054 km (0.117 R)
• M2: 665,112 km (0.098 R)
• M3: 1,338,602 km (0.066 R)
• M4: 1,834,818 km (0.12 R)
• M5: 3,390,037 km (0.06 R)
• M6: 3,854,688 km (0.112 R)
• M7: 4,455,922 km (0.115 R)
• M8: 5,067,179 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 596.8

Radius: 12.6

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 3.38 AU - 3.88 AU

Year: 4466 Days

Day: 14.6 Hours

Environment

Temp: -203 °C

Axial Tilt: 177.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 73,042,221 km

• M1: 156,629 km (0.114 R)
• M2: 634,893 km (0.051 R)
• M3: 1,036,115 km (0.075 R)
• M4: 2,126,683 km (0.032 R)
• M5: 2,847,446 km (0.087 R)
• M6: 3,982,295 km (0.099 R)
• M7: 4,702,310 km (0.064 R)
• M8: 5,238,020 km (0.053 R)
• M9: 6,463,077 km (0.113 R)
• M10: 6,932,814 km (0.061 R)
• M11: 8,153,832 km (0.111 R)
• M12: 8,591,256 km (0.08 R)
• M13: 9,198,923 km (0.116 R)
• M14: 10,373,416 km (0.1 R)
• M15: 11,737,000 km (0.076 R)
• M16: 14,392,362 km (0.084 R)
• M17: 16,085,960 km (0.065 R)
• M18: 17,010,175 km (0.079 R)
• M19: 18,276,671 km (0.119 R)
• M20: 19,475,997 km (0.101 R)
• M21: 23,388,580 km (0.075 R)
• M22: 24,801,532 km (0.11 R)
• M23: 26,034,817 km (0.046 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 700

Radius: 3.8

Gravity: 48.48 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 7.39 AU - 11.41 AU

Year: 18608 Days

Day: 16.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 73,042,221 km

• M1: 47,273 km (0.117 R)
• M2: 196,721 km (0.055 R)
• M3: 596,896 km (0.06 R)
• M4: 982,559 km (0.081 R)
• M5: 1,940,284 km (0.108 R)
• M6: 3,567,760 km (0.064 R)
• M7: 4,344,023 km (0.092 R)
• M8: 4,477,913 km (0.106 R)
• M9: 5,152,151 km (0.114 R)
• M10: 5,690,404 km (0.086 R)
• M11: 7,106,048 km (0.076 R)
• M12: 8,272,164 km (0.088 R)
• M13: 10,251,792 km (0.099 R)
• M14: 10,976,145 km (0.076 R)
• M15: 13,494,326 km (0.07 R)
• M16: 16,211,622 km (0.055 R)
• M17: 19,092,877 km (0.102 R)
• M18: 20,465,886 km (0.059 R)
• M19: 24,235,902 km (0.038 R)
• M20: 25,191,982 km (0.086 R)
• M21: 34,289,029 km (0.036 R)
• M22: 37,141,112 km (0.1 R)
• M23: 37,984,096 km (0.071 R)
• M24: 49,115,973 km (0.072 R)
• M25: 49,791,258 km (0.114 R)
• M26: 50,815,704 km (0.073 R)
• M27: 52,028,643 km (0.105 R)
• M28: 56,887,582 km (0.118 R)
• M29: 61,453,010 km (0.107 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: 404 - 11,557 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit