🌌 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: 3.69

Radius: 1.69

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.55 AU - 0.57 AU

Year: 271 Days

Day: 45.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 16.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 63,590,914 km

• M1: 149,299 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 269.9

Radius: 11.6

Gravity: 2.01 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.7 AU - 1 AU

Year: 506 Days

Day: 10.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 63,590,914 km

• M1: 144,362 km (0.084 R)
• M2: 533,466 km (0.106 R)
• M3: 937,081 km (0.06 R)
• M4: 1,454,690 km (0.086 R)
• M5: 1,877,453 km (0.06 R)
• M6: 2,505,016 km (0.1 R)
• M7: 3,278,886 km (0.105 R)
• M8: 3,728,129 km (0.063 R)
• M9: 4,765,440 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 829

Radius: 11.4

Gravity: 6.38 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.36 AU - 2.04 AU

Year: 1431 Days

Day: 13.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 63,590,914 km

• M1: 142,567 km (0.12 R)
• M2: 603,627 km (0.113 R)
• M3: 1,181,374 km (0.115 R)
• M4: 1,541,756 km (0.093 R)
• M5: 1,912,908 km (0.107 R)
• M6: 2,418,399 km (0.064 R)
• M7: 3,144,846 km (0.043 R)
• M8: 4,100,926 km (0.09 R)
• M9: 5,590,173 km (0.097 R)
• M10: 6,214,595 km (0.043 R)
• M11: 9,002,650 km (0.097 R)
• M12: 11,890,787 km (0.119 R)
• M13: 12,343,171 km (0.087 R)
• M14: 12,846,119 km (0.101 R)
• M15: 13,524,396 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691.3

Radius: 13.8

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 2.56 AU - 3.22 AU

Year: 3172 Days

Day: 12.5 Hours

Environment

Temp: -205 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 63,590,914 km

• M1: 173,085 km (0.084 R)
• M2: 669,301 km (0.084 R)
• M3: 1,723,517 km (0.063 R)
• M4: 2,879,460 km (0.114 R)
• M5: 3,685,493 km (0.09 R)
• M6: 4,614,346 km (0.077 R)
• M7: 5,615,455 km (0.076 R)
• M8: 6,816,128 km (0.102 R)
• M9: 7,430,077 km (0.065 R)
• M10: 8,769,128 km (0.107 R)
• M11: 10,865,443 km (0.039 R)
• M12: 14,385,331 km (0.051 R)
• M13: 15,294,587 km (0.072 R)
• M14: 16,403,257 km (0.093 R)
• M15: 18,194,841 km (0.105 R)
• M16: 22,097,999 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.7

Radius: 10.6

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 3.42 AU - 3.94 AU

Year: 4558 Days

Day: 7.2 Hours

Environment

Temp: -214 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 63,590,914 km

• M1: 132,693 km (0.086 R)
• M2: 666,907 km (0.046 R)
• M3: 1,233,434 km (0.113 R)
• M4: 1,620,444 km (0.095 R)
• M5: 3,788,117 km (0.08 R)
• M6: 4,435,726 km (0.076 R)
• M7: 4,956,477 km (0.079 R)
• M8: 5,543,947 km (0.027 R)
• M9: 6,981,882 km (0.102 R)
• M10: 7,888,296 km (0.1 R)
• M11: 9,279,257 km (0.097 R)
• M12: 12,266,128 km (0.087 R)
• M13: 12,726,291 km (0.098 R)
• M14: 14,327,138 km (0.094 R)
• M15: 16,167,341 km (0.106 R)
• M16: 18,517,524 km (0.099 R)
• M17: 20,696,716 km (0.082 R)
• M18: 22,016,019 km (0.083 R)
• M19: 22,696,241 km (0.111 R)
• M20: 23,320,513 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.9

Radius: 10.9

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 4.16 AU - 4.2 AU

Year: 5518 Days

Day: 11 Hours

Environment

Temp: -216 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 63,590,914 km

• M1: 135,536 km (0.117 R)
• M2: 612,753 km (0.036 R)
• M3: 2,297,225 km (0.115 R)
• M4: 3,517,345 km (0.077 R)
• M5: 5,848,978 km (0.114 R)
• M6: 8,118,078 km (0.118 R)
• M7: 9,769,788 km (0.056 R)
• M8: 11,294,639 km (0.077 R)
• M9: 12,470,628 km (0.086 R)
• M10: 13,822,843 km (0.092 R)
• M11: 22,277,965 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 897.1

Radius: 4.2

Gravity: 50.86 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 5.24 AU - 8.44 AU

Year: 11550 Days

Day: 22.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 63,590,914 km

• M1: 68,815 km (0.059 R)
• M2: 288,425 km (0.095 R)
• M3: 617,540 km (0.065 R)
• M4: 2,950,220 km (0.081 R)
• M5: 3,998,601 km (0.12 R)
• M6: 6,592,030 km (0.053 R)
• M7: 7,176,060 km (0.112 R)
• M8: 9,492,583 km (0.092 R)
• M9: 13,273,669 km (0.079 R)
• M10: 13,932,349 km (0.094 R)
• M11: 14,474,940 km (0.092 R)
• M12: 14,751,397 km (0.09 R)
• M13: 19,499,185 km (0.076 R)
• M14: 21,313,059 km (0.119 R)
• M15: 23,236,439 km (0.044 R)
• M16: 25,073,650 km (0.085 R)
• M17: 26,487,649 km (0.105 R)
• M18: 27,954,008 km (0.096 R)
• M19: 30,933,249 km (0.095 R)
• M20: 31,391,916 km (0.086 R)
• M21: 32,322,714 km (0.044 R)
• M22: 34,117,290 km (0.092 R)
• M23: 34,853,312 km (0.116 R)
• M24: 35,101,046 km (0.118 R)
• M25: 39,628,027 km (0.072 R)
• M26: 43,805,248 km (0.073 R)
• M27: 54,840,036 km (0.081 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 716.6

Radius: 4.2

Gravity: 40.62 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 7.75 AU - 8.49 AU

Year: 14940 Days

Day: 17.6 Hours

Environment

Temp: -236 °C

Axial Tilt: 59.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 63,590,914 km

• M1: 54,454 km (0.1 R)
• M2: 198,367 km (0.087 R)
• M3: 429,047 km (0.11 R)
• M4: 666,309 km (0.085 R)
• M5: 815,308 km (0.04 R)
• M6: 1,417,290 km (0.081 R)
• M7: 2,057,120 km (0.108 R)
• M8: 3,066,308 km (0.115 R)
• M9: 3,456,758 km (0.073 R)
• M10: 6,948,223 km (0.109 R)
• M11: 7,345,854 km (0.074 R)
• M12: 7,481,838 km (0.117 R)
• M13: 8,883,570 km (0.077 R)
• M14: 11,151,025 km (0.109 R)
• M15: 15,416,210 km (0.108 R)
• M16: 16,015,649 km (0.098 R)
• M17: 17,261,051 km (0.087 R)
• M18: 19,248,010 km (0.083 R)
• M19: 19,680,348 km (0.031 R)
• M20: 20,744,288 km (0.083 R)
• M21: 22,033,373 km (0.067 R)
• M22: 23,472,654 km (0.116 R)
• M23: 25,904,218 km (0.103 R)
• M24: 26,430,952 km (0.111 R)
• M25: 27,288,746 km (0.098 R)
• M26: 30,553,869 km (0.119 R)
• M27: 31,498,430 km (0.065 R)
• M28: 32,584,062 km (0.114 R)
• M29: 33,445,446 km (0.06 R)
• M30: 33,819,291 km (0.09 R)
• M31: 34,575,209 km (0.086 R)
• M32: 36,646,093 km (0.117 R)
• M33: 39,487,555 km (0.113 R)
• M34: 39,905,082 km (0.076 R)
• M35: 50,340,132 km (0.066 R)
• M36: 56,795,879 km (0.061 R)
• M37: 59,125,118 km (0.04 R)
• M38: 61,330,789 km (0.084 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 493 - 15,638 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit