🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.5 AU - 0.6 AU

Year: 268 Days

Day: 26.7 Hours

Environment

Temp: -128 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 568.5

Radius: 10.4

Gravity: 5.26 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.66 AU - 0.94 AU

Year: 469 Days

Day: 9.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,422,115 km

• M1: 129,402 km (0.09 R)
• M2: 474,674 km (0.103 R)
• M3: 820,395 km (0.105 R)
• M4: 1,213,388 km (0.104 R)
• M5: 1,681,779 km (0.112 R)
• M6: 2,120,849 km (0.093 R)
• M7: 2,923,442 km (0.097 R)
• M8: 3,266,769 km (0.095 R)
• M9: 3,674,572 km (0.098 R)
• M10: 4,211,330 km (0.094 R)
• M11: 5,491,439 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.1

Radius: 8

Gravity: 13.16 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.84 AU - 1.02 AU

Year: 588 Days

Day: 8.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 46.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 70,422,115 km

• M1: 99,483 km (0.115 R)
• M2: 540,497 km (0.069 R)
• M3: 807,529 km (0.084 R)
• M4: 1,260,512 km (0.096 R)
• M5: 1,865,785 km (0.091 R)
• M6: 2,157,052 km (0.06 R)
• M7: 2,447,272 km (0.069 R)
• M8: 2,890,530 km (0.09 R)
• M9: 3,360,417 km (0.109 R)
• M10: 3,996,058 km (0.05 R)
• M11: 4,483,897 km (0.119 R)
• M12: 4,808,524 km (0.081 R)
• M13: 5,450,748 km (0.035 R)
• M14: 6,267,253 km (0.098 R)
• M15: 6,904,839 km (0.116 R)
• M16: 7,652,978 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624.6

Radius: 9.5

Gravity: 6.92 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.24 AU - 1.34 AU

Year: 961 Days

Day: 9.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 70,422,115 km

• M1: 118,182 km (0.095 R)
• M2: 448,943 km (0.068 R)
• M3: 816,804 km (0.09 R)
• M4: 1,131,259 km (0.05 R)
• M5: 1,472,941 km (0.093 R)
• M6: 1,949,859 km (0.095 R)
• M7: 2,370,229 km (0.109 R)
• M8: 2,667,629 km (0.114 R)
• M9: 3,174,467 km (0.11 R)
• M10: 3,523,030 km (0.11 R)
• M11: 3,866,207 km (0.089 R)
• M12: 4,297,648 km (0.112 R)
• M13: 4,672,839 km (0.1 R)
• M14: 5,528,240 km (0.042 R)
• M15: 5,972,695 km (0.106 R)
• M16: 6,910,374 km (0.049 R)
• M17: 9,158,531 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.1

Radius: 11.2

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 1.63 AU - 1.87 AU

Year: 1519 Days

Day: 14.4 Hours

Environment

Temp: -174 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 70,422,115 km

• M1: 139,724 km (0.117 R)
• M2: 628,461 km (0.045 R)
• M3: 1,137,393 km (0.07 R)
• M4: 1,504,207 km (0.119 R)
• M5: 2,432,461 km (0.11 R)
• M6: 2,796,283 km (0.039 R)
• M7: 3,480,245 km (0.05 R)
• M8: 4,911,597 km (0.119 R)
• M9: 5,403,625 km (0.114 R)
• M10: 6,508,405 km (0.12 R)
• M11: 7,781,782 km (0.064 R)
• M12: 8,683,857 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 393.9

Radius: 14.7

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 3.52 AU - 4.2 AU

Year: 4975 Days

Day: 12.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 127.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 70,422,115 km

• M1: 182,809 km (0.093 R)
• M2: 661,073 km (0.091 R)
• M3: 1,737,280 km (0.097 R)
• M4: 2,241,874 km (0.098 R)
• M5: 3,536,793 km (0.112 R)
• M6: 5,182,070 km (0.07 R)
• M7: 5,961,625 km (0.101 R)
• M8: 7,357,672 km (0.089 R)
• M9: 8,028,768 km (0.092 R)
• M10: 8,887,909 km (0.037 R)
• M11: 9,416,887 km (0.095 R)
• M12: 10,047,143 km (0.077 R)
• M13: 10,789,896 km (0.035 R)
• M14: 11,568,852 km (0.058 R)
• M15: 12,063,123 km (0.098 R)
• M16: 12,665,554 km (0.077 R)
• M17: 16,542,084 km (0.087 R)
• M18: 18,536,074 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 515.9

Radius: 12.3

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 5.05 AU - 5.59 AU

Year: 8050 Days

Day: 7.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 70,422,115 km

• M1: 153,039 km (0.064 R)
• M2: 610,210 km (0.064 R)
• M3: 1,137,542 km (0.114 R)
• M4: 1,669,662 km (0.1 R)
• M5: 2,150,918 km (0.12 R)
• M6: 2,781,473 km (0.068 R)
• M7: 3,693,272 km (0.114 R)
• M8: 4,822,886 km (0.113 R)
• M9: 5,346,777 km (0.101 R)
• M10: 7,076,877 km (0.08 R)
• M11: 8,684,007 km (0.062 R)
• M12: 9,197,427 km (0.075 R)
• M13: 11,763,479 km (0.116 R)
• M14: 12,180,558 km (0.101 R)
• M15: 17,244,895 km (0.086 R)
• M16: 23,153,412 km (0.086 R)
• M17: 24,988,080 km (0.072 R)
• M18: 26,828,134 km (0.102 R)
• M19: 29,039,789 km (0.028 R)
• M20: 35,744,466 km (0.037 R)
• M21: 36,181,143 km (0.096 R)
• M22: 36,842,964 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 769.2

Radius: 7.2

Gravity: 14.84 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 7 AU - 10.38 AU

Year: 16805 Days

Day: 19.1 Hours

Environment

Temp: -230 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 70,422,115 km

• M1: 98,884 km (0.075 R)
• M2: 361,728 km (0.066 R)
• M3: 635,492 km (0.114 R)
• M4: 1,283,400 km (0.091 R)
• M5: 1,536,370 km (0.075 R)
• M6: 2,394,164 km (0.108 R)
• M7: 3,157,113 km (0.116 R)
• M8: 3,481,591 km (0.115 R)
• M9: 10,036,072 km (0.099 R)
• M10: 11,103,004 km (0.09 R)
• M11: 28,821,675 km (0.037 R)
• M12: 34,898,042 km (0.04 R)
• M13: 43,588,182 km (0.082 R)
• M14: 45,926,247 km (0.075 R)
• M15: 47,530,684 km (0.106 R)
• M16: 50,681,365 km (0.104 R)
• M17: 54,856,642 km (0.094 R)
• M18: 58,506,680 km (0.113 R)
• M19: 64,280,111 km (0.058 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: 250 - 14,805 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit