🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.2

Radius: 1.08

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.47 AU - 0.65 AU

Year: 266 Days

Day: 24.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 6.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 45.3

Radius: 9

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.65 AU - 1.03 AU

Year: 489 Days

Day: 6.4 Hours

Environment

Temp: -143 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 23,693,800 km

• M1: 112,049 km (0.035 R)
• M2: 489,783 km (0.11 R)
• M3: 909,705 km (0.058 R)
• M4: 1,262,756 km (0.046 R)
• M5: 1,598,752 km (0.114 R)
• M6: 2,031,988 km (0.11 R)
• M7: 2,321,460 km (0.052 R)

Asteroid Belt

Center: 1.18 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 47

Radius: 14.2

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.31 AU - 1.71 AU

Year: 1180 Days

Day: 10.4 Hours

Environment

Temp: -169 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 23,693,800 km

• M1: 176,675 km (0.041 R)
• M2: 630,555 km (0.112 R)
• M3: 1,172,847 km (0.099 R)
• M4: 2,226,764 km (0.105 R)
• M5: 2,784,016 km (0.118 R)
• M6: 3,368,944 km (0.09 R)
• M7: 4,349,259 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.8

Radius: 8.9

Gravity: 7.13 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 2.22 AU - 2.3 AU

Year: 2160 Days

Day: 13.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 23,693,800 km

• M1: 114,891 km (0.064 R)
• M2: 420,071 km (0.107 R)
• M3: 1,027,887 km (0.118 R)
• M4: 1,327,083 km (0.078 R)
• M5: 1,634,506 km (0.119 R)
• M6: 2,557,974 km (0.111 R)
• M7: 2,858,067 km (0.106 R)
• M8: 3,428,185 km (0.109 R)
• M9: 4,148,499 km (0.038 R)
• M10: 6,388,427 km (0.106 R)
• M11: 7,054,736 km (0.105 R)
• M12: 8,004,384 km (0.105 R)
• M13: 8,463,200 km (0.096 R)
• M14: 8,907,207 km (0.088 R)
• M15: 9,266,840 km (0.115 R)
• M16: 10,404,382 km (0.118 R)
• M17: 11,212,809 km (0.079 R)
• M18: 11,865,804 km (0.059 R)
• M19: 12,789,122 km (0.091 R)
• M20: 14,329,531 km (0.058 R)
• M21: 15,098,315 km (0.086 R)
• M22: 15,751,908 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 13.5

Radius: 12.5

Gravity: 0.09 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 3.4 AU - 3.54 AU

Year: 4110 Days

Day: 11.4 Hours

Environment

Temp: -206 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 23,693,800 km

• M1: 156,629 km (0.049 R)
• M2: 600,187 km (0.049 R)
• M3: 1,264,102 km (0.106 R)
• M4: 2,159,296 km (0.08 R)
• M5: 2,577,571 km (0.103 R)
• M6: 4,364,817 km (0.048 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 416.7

Radius: 6.3

Gravity: 10.5 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 7.34 AU - 7.68 AU

Year: 13086 Days

Day: 18.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 23,693,800 km

• M1: 158,125 km (0.046 R)
• M2: 385,514 km (0.099 R)
• M3: 791,822 km (0.094 R)
• M4: 1,166,265 km (0.103 R)
• M5: 1,468,303 km (0.091 R)
• M6: 2,437,249 km (0.054 R)
• M7: 3,206,331 km (0.102 R)
• M8: 3,446,286 km (0.108 R)
• M9: 4,295,852 km (0.072 R)
• M10: 5,114,901 km (0.05 R)
• M11: 5,510,587 km (0.099 R)
• M12: 6,363,145 km (0.084 R)
• M13: 6,938,798 km (0.108 R)
• M14: 8,193,475 km (0.102 R)
• M15: 9,840,249 km (0.076 R)
• M16: 11,978,750 km (0.119 R)
• M17: 13,648,113 km (0.047 R)
• M18: 13,961,670 km (0.117 R)
• M19: 15,466,774 km (0.096 R)
• M20: 16,153,578 km (0.111 R)
• M21: 17,367,714 km (0.053 R)
• M22: 19,027,503 km (0.087 R)
• M23: 19,656,562 km (0.106 R)
• M24: 25,668,451 km (0.105 R)
• M25: 27,219,033 km (0.109 R)
• M26: 27,916,608 km (0.051 R)
• M27: 28,830,950 km (0.12 R)
• M28: 29,765,040 km (0.056 R)
• M29: 30,292,671 km (0.109 R)
• M30: 31,693,506 km (0.105 R)
• M31: 32,465,580 km (0.116 R)
• M32: 36,634,723 km (0.065 R)
• M33: 36,997,498 km (0.057 R)
• M34: 38,348,068 km (0.108 R)
• M35: 40,887,192 km (0.044 R)
• M36: 43,943,327 km (0.114 R)
• M37: 44,902,848 km (0.048 R)
• M38: 45,736,407 km (0.084 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 33.8

Radius: 3.8

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 6.8 AU - 10.12 AU

Year: 15645 Days

Day: 16.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 23,693,800 km

• M1: 48,021 km (0.067 R)
• M2: 316,549 km (0.11 R)
• M3: 1,688,960 km (0.119 R)
• M4: 1,837,062 km (0.085 R)
• M5: 4,781,298 km (0.106 R)
• M6: 5,655,697 km (0.098 R)
• M7: 6,333,675 km (0.041 R)
• M8: 9,864,334 km (0.095 R)
• M9: 12,336,738 km (0.079 R)
• M10: 13,373,451 km (0.112 R)
• M11: 14,163,029 km (0.054 R)
• M12: 20,385,253 km (0.067 R)
• M13: 20,837,787 km (0.082 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 378 - 13,302 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit