🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.42

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.6 AU - 0.64 AU

Year: 320 Days

Day: 14.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 22.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.6

Radius: 13.6

Gravity: 4.6 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.67 AU - 0.77 AU

Year: 401 Days

Day: 6.5 Hours

Environment

Temp: -142 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 71,192,628 km

• M1: 169,195 km (0.04 R)
• M2: 710,889 km (0.097 R)
• M3: 1,331,720 km (0.112 R)
• M4: 1,817,764 km (0.106 R)
• M5: 2,368,134 km (0.104 R)
• M6: 3,083,811 km (0.069 R)
• M7: 3,734,112 km (0.115 R)
• M8: 4,222,101 km (0.111 R)
• M9: 5,295,166 km (0.042 R)
• M10: 5,741,865 km (0.062 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 171.1

Radius: 10.1

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.88 AU - 1.1 AU

Year: 646 Days

Day: 8.4 Hours

Environment

Temp: -157 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 71,192,628 km

• M1: 140,024 km (0.086 R)
• M2: 489,185 km (0.032 R)
• M3: 888,013 km (0.09 R)
• M4: 1,227,151 km (0.108 R)
• M5: 1,549,834 km (0.119 R)
• M6: 1,960,181 km (0.071 R)
• M7: 2,595,822 km (0.119 R)
• M8: 3,531,856 km (0.096 R)
• M9: 4,609,858 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 657

Radius: 14.8

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.23 AU - 1.25 AU

Year: 906 Days

Day: 6.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,192,628 km

• M1: 184,005 km (0.089 R)
• M2: 734,376 km (0.103 R)
• M3: 1,345,782 km (0.081 R)
• M4: 2,104,393 km (0.079 R)
• M5: 2,921,347 km (0.118 R)
• M6: 3,432,523 km (0.105 R)
• M7: 5,134,797 km (0.098 R)
• M8: 5,647,170 km (0.069 R)
• M9: 6,362,397 km (0.06 R)
• M10: 7,826,961 km (0.119 R)
• M11: 9,065,481 km (0.115 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 633.4

Radius: 7.8

Gravity: 10.41 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 6.25 AU - 7.27 AU

Year: 11530 Days

Day: 16.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 71,192,628 km

• M1: 101,427 km (0.032 R)
• M2: 362,326 km (0.076 R)
• M3: 977,173 km (0.098 R)
• M4: 1,246,300 km (0.046 R)
• M5: 2,165,130 km (0.095 R)
• M6: 2,548,400 km (0.082 R)
• M7: 2,976,399 km (0.09 R)
• M8: 3,655,125 km (0.07 R)
• M9: 4,829,767 km (0.087 R)
• M10: 5,451,945 km (0.083 R)
• M11: 7,813,646 km (0.098 R)
• M12: 8,858,438 km (0.085 R)
• M13: 9,488,544 km (0.097 R)
• M14: 10,462,875 km (0.079 R)
• M15: 11,111,831 km (0.092 R)
• M16: 11,672,673 km (0.046 R)
• M17: 12,018,244 km (0.05 R)
• M18: 13,281,598 km (0.042 R)
• M19: 13,785,444 km (0.089 R)
• M20: 16,354,338 km (0.097 R)
• M21: 21,978,620 km (0.114 R)
• M22: 24,045,614 km (0.102 R)
• M23: 26,238,719 km (0.037 R)
• M24: 26,931,805 km (0.108 R)
• M25: 27,333,326 km (0.111 R)
• M26: 33,729,084 km (0.074 R)
• M27: 34,903,577 km (0.111 R)
• M28: 35,380,944 km (0.08 R)
• M29: 38,845,032 km (0.096 R)
• M30: 42,258,257 km (0.115 R)
• M31: 43,073,416 km (0.049 R)
• M32: 45,157,015 km (0.098 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 756.4

Radius: 5.7

Gravity: 23.28 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 6.74 AU - 9.3 AU

Year: 14899 Days

Day: 19.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 71,192,628 km

• M1: 70,909 km (0.059 R)
• M2: 1,205,609 km (0.067 R)
• M3: 1,678,189 km (0.076 R)
• M4: 1,920,687 km (0.083 R)
• M5: 2,246,362 km (0.069 R)
• M6: 2,608,388 km (0.082 R)
• M7: 3,158,909 km (0.092 R)
• M8: 3,755,056 km (0.11 R)
• M9: 5,532,877 km (0.078 R)
• M10: 6,437,196 km (0.092 R)
• M11: 7,527,615 km (0.079 R)
• M12: 8,286,974 km (0.071 R)
• M13: 8,685,204 km (0.115 R)
• M14: 9,148,359 km (0.114 R)
• M15: 9,359,591 km (0.098 R)
• M16: 10,870,679 km (0.083 R)
• M17: 12,472,722 km (0.104 R)
• M18: 16,445,444 km (0.108 R)
• M19: 17,475,126 km (0.042 R)
• M20: 22,596,459 km (0.108 R)
• M21: 25,185,550 km (0.06 R)
• M22: 25,392,443 km (0.096 R)
• M23: 26,338,052 km (0.118 R)
• M24: 27,306,847 km (0.078 R)
• M25: 27,634,915 km (0.081 R)
• M26: 28,299,130 km (0.1 R)
• M27: 32,877,872 km (0.112 R)
• M28: 36,190,268 km (0.105 R)
• M29: 46,509,828 km (0.11 R)
• M30: 50,342,376 km (0.116 R)
• M31: 52,841,558 km (0.115 R)
• M32: 54,899,576 km (0.036 R)
• M33: 57,188,723 km (0.118 R)
• M34: 61,393,171 km (0.104 R)
• M35: 61,956,407 km (0.104 R)
• M36: 62,333,693 km (0.109 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 760.1

Radius: 7.4

Gravity: 13.88 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 7.44 AU - 10.2 AU

Year: 17184 Days

Day: 20.7 Hours

Environment

Temp: -227 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 71,192,628 km

• M1: 259,253 km (0.112 R)
• M2: 579,692 km (0.107 R)
• M3: 891,155 km (0.079 R)
• M4: 2,011,792 km (0.074 R)
• M5: 2,510,252 km (0.1 R)
• M6: 2,936,157 km (0.09 R)
• M7: 5,100,689 km (0.061 R)
• M8: 5,984,962 km (0.095 R)
• M9: 6,833,631 km (0.11 R)
• M10: 7,568,605 km (0.054 R)
• M11: 11,665,193 km (0.105 R)
• M12: 12,378,775 km (0.107 R)
• M13: 13,679,528 km (0.118 R)
• M14: 16,550,012 km (0.119 R)
• M15: 16,873,892 km (0.049 R)
• M16: 19,348,989 km (0.078 R)
• M17: 19,617,966 km (0.051 R)
• M18: 23,550,894 km (0.096 R)
• M19: 31,180,385 km (0.04 R)
• M20: 32,173,864 km (0.048 R)
• M21: 32,932,625 km (0.117 R)
• M22: 33,316,493 km (0.064 R)
• M23: 49,878,623 km (0.115 R)
• M24: 51,751,738 km (0.106 R)
• M25: 52,618,508 km (0.111 R)
• M26: 55,096,896 km (0.102 R)
• M27: 59,524,843 km (0.093 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 417 - 17,781 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit