🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.47 AU - 0.59 AU

Year: 253 Days

Day: 18.9 Hours

Environment

Temp: -125 °C

Axial Tilt: 28.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,505,102 km

• M1: 437,125 km (0.103 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.17

Radius: 1.59

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.44 AU - 0.74 AU

Year: 297 Days

Day: 28.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,505,102 km

• M1: 120,277 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378.4

Radius: 10.2

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.91 AU - 1.21 AU

Year: 716 Days

Day: 12.8 Hours

Environment

Temp: -168 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 78,505,102 km

• M1: 126,859 km (0.053 R)
• M2: 663,317 km (0.111 R)
• M3: 1,084,285 km (0.118 R)
• M4: 1,979,629 km (0.107 R)
• M5: 3,141,106 km (0.102 R)
• M6: 3,755,655 km (0.103 R)
• M7: 4,113,193 km (0.095 R)
• M8: 4,929,399 km (0.049 R)
• M9: 5,977,333 km (0.047 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 59.3

Radius: 10.9

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.57 AU - 1.79 AU

Year: 1428 Days

Day: 9.2 Hours

Environment

Temp: -183 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 78,505,102 km

• M1: 138,228 km (0.108 R)
• M2: 557,850 km (0.092 R)
• M3: 1,140,085 km (0.116 R)
• M4: 1,497,325 km (0.09 R)
• M5: 2,010,745 km (0.078 R)
• M6: 3,142,902 km (0.065 R)
• M7: 5,220,666 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 42.4

Radius: 14.6

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 2 AU - 2 AU

Year: 1855 Days

Day: 8.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 78,505,102 km

• M1: 183,257 km (0.076 R)
• M2: 847,771 km (0.111 R)
• M3: 1,966,015 km (0.063 R)
• M4: 2,491,403 km (0.088 R)
• M5: 3,729,924 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 900.6

Radius: 13.1

Gravity: 5.25 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.56 AU - 4.16 AU

Year: 4040 Days

Day: 12.8 Hours

Environment

Temp: -198 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 78,505,102 km

• M1: 162,912 km (0.091 R)
• M2: 614,099 km (0.072 R)
• M3: 1,133,503 km (0.067 R)
• M4: 1,550,582 km (0.088 R)
• M5: 2,086,741 km (0.056 R)
• M6: 2,745,869 km (0.081 R)
• M7: 3,259,887 km (0.106 R)
• M8: 3,794,400 km (0.065 R)
• M9: 4,681,217 km (0.099 R)
• M10: 5,587,780 km (0.046 R)
• M11: 6,671,915 km (0.047 R)
• M12: 8,745,342 km (0.067 R)
• M13: 9,415,391 km (0.112 R)
• M14: 12,590,755 km (0.075 R)
• M15: 13,343,232 km (0.056 R)
• M16: 20,009,613 km (0.099 R)
• M17: 21,104,370 km (0.055 R)
• M18: 21,737,468 km (0.052 R)
• M19: 23,189,914 km (0.061 R)
• M20: 24,474,361 km (0.084 R)
• M21: 24,939,012 km (0.039 R)
• M22: 26,692,898 km (0.114 R)
• M23: 27,102,646 km (0.066 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 626.7

Radius: 14.8

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 3.7 AU - 4.08 AU

Year: 5033 Days

Day: 7.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 78,505,102 km

• M1: 184,305 km (0.066 R)
• M2: 920,027 km (0.072 R)
• M3: 1,504,207 km (0.086 R)
• M4: 2,526,558 km (0.097 R)
• M5: 2,994,949 km (0.105 R)
• M6: 4,227,337 km (0.06 R)
• M7: 7,258,937 km (0.093 R)
• M8: 8,182,256 km (0.115 R)
• M9: 8,827,322 km (0.098 R)
• M10: 11,612,984 km (0.09 R)
• M11: 16,434,672 km (0.099 R)
• M12: 17,463,906 km (0.109 R)
• M13: 19,252,348 km (0.069 R)
• M14: 20,191,075 km (0.039 R)
• M15: 23,341,008 km (0.048 R)
• M16: 27,470,059 km (0.072 R)
• M17: 29,180,261 km (0.063 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.1

Radius: 10.9

Gravity: 0.16 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 3.37 AU - 5.25 AU

Year: 5870 Days

Day: 9.4 Hours

Environment

Temp: -218 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 78,505,102 km

• M1: 139,276 km (0.086 R)
• M2: 555,606 km (0.102 R)
• M3: 2,274,785 km (0.069 R)
• M4: 2,734,350 km (0.079 R)
• M5: 3,159,507 km (0.086 R)
• M6: 3,554,745 km (0.075 R)
• M7: 4,566,625 km (0.104 R)
• M8: 6,201,729 km (0.096 R)
• M9: 9,598,499 km (0.081 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 58.1

Radius: 5.8

Gravity: 1.73 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 7.14 AU - 8.3 AU

Year: 14071 Days

Day: 19 Hours

Environment

Temp: -222 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 78,505,102 km

• M1: 72,256 km (0.114 R)
• M2: 657,333 km (0.084 R)
• M3: 1,212,640 km (0.113 R)
• M4: 2,572,784 km (0.103 R)
• M5: 3,270,957 km (0.1 R)
• M6: 4,532,217 km (0.074 R)
• M7: 4,828,870 km (0.068 R)
• M8: 6,028,944 km (0.101 R)
• M9: 7,215,105 km (0.114 R)
• M10: 11,879,417 km (0.079 R)
• M11: 18,979,631 km (0.077 R)
• M12: 22,187,907 km (0.067 R)
• M13: 25,895,541 km (0.118 R)
• M14: 26,287,637 km (0.091 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 727.3

Radius: 4

Gravity: 45.46 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 8.66 AU - 11.08 AU

Year: 20342 Days

Day: 19.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 78,505,102 km

• M1: 49,816 km (0.105 R)
• M2: 178,620 km (0.067 R)
• M3: 455,974 km (0.076 R)
• M4: 640,428 km (0.036 R)
• M5: 818,600 km (0.105 R)
• M6: 991,983 km (0.086 R)
• M7: 1,320,201 km (0.084 R)
• M8: 2,167,972 km (0.086 R)
• M9: 2,767,860 km (0.115 R)
• M10: 3,052,395 km (0.077 R)
• M11: 3,530,211 km (0.068 R)
• M12: 3,991,570 km (0.065 R)
• M13: 5,261,507 km (0.094 R)
• M14: 5,536,468 km (0.109 R)
• M15: 5,779,714 km (0.105 R)
• M16: 8,780,647 km (0.053 R)
• M17: 10,153,806 km (0.038 R)
• M18: 13,827,780 km (0.099 R)
• M19: 16,996,113 km (0.108 R)
• M20: 19,203,879 km (0.053 R)
• M21: 19,760,832 km (0.047 R)
• M22: 20,043,272 km (0.061 R)
• M23: 21,995,824 km (0.087 R)
• M24: 22,197,781 km (0.088 R)
• M25: 23,751,953 km (0.119 R)
• M26: 37,137,821 km (0.038 R)
• M27: 38,146,709 km (0.097 R)
• M28: 38,731,338 km (0.071 R)
• M29: 39,173,698 km (0.087 R)
• M30: 43,624,833 km (0.083 R)
• M31: 46,384,615 km (0.082 R)
• M32: 61,942,345 km (0.099 R)
• M33: 63,768,486 km (0.101 R)
• M34: 66,048,956 km (0.04 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: 499 - 14,451 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit