🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.63

Radius: 0.83

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.54 AU - 0.74 AU

Year: 336 Days

Day: 35.3 Hours

Environment

Temp: -128 °C

Axial Tilt: 24.2 °

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: 770

Radius: 12.9

Gravity: 4.63 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.74 AU - 0.94 AU

Year: 505 Days

Day: 8.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 32,009,028 km

• M1: 162,463 km (0.081 R)
• M2: 573,259 km (0.034 R)
• M3: 1,106,127 km (0.065 R)
• M4: 1,618,350 km (0.108 R)
• M5: 2,115,763 km (0.089 R)
• M6: 2,540,172 km (0.096 R)
• M7: 3,539,336 km (0.071 R)
• M8: 3,976,012 km (0.1 R)
• M9: 4,975,476 km (0.097 R)
• M10: 5,771,635 km (0.075 R)
• M11: 6,418,497 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 543.7

Radius: 12.6

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.6 AU - 2 AU

Year: 1584 Days

Day: 11.3 Hours

Environment

Temp: -175 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 32,009,028 km

• M1: 156,779 km (0.049 R)
• M2: 569,519 km (0.073 R)
• M3: 1,034,918 km (0.044 R)
• M4: 1,612,216 km (0.035 R)
• M5: 2,609,884 km (0.027 R)
• M6: 3,553,548 km (0.049 R)
• M7: 4,087,163 km (0.082 R)
• M8: 4,674,036 km (0.114 R)
• M9: 5,550,679 km (0.041 R)
• M10: 5,971,648 km (0.07 R)
• M11: 6,366,437 km (0.1 R)
• M12: 6,853,228 km (0.106 R)
• M13: 8,786,033 km (0.106 R)
• M14: 9,926,268 km (0.12 R)
• M15: 11,585,308 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 589.7

Radius: 11.4

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 1.95 AU - 3.13 AU

Year: 2656 Days

Day: 11.1 Hours

Environment

Temp: -194 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 32,009,028 km

• M1: 142,268 km (0.082 R)
• M2: 534,812 km (0.097 R)
• M3: 896,241 km (0.091 R)
• M4: 1,302,848 km (0.066 R)
• M5: 1,903,035 km (0.086 R)
• M6: 2,507,111 km (0.091 R)
• M7: 2,909,679 km (0.092 R)
• M8: 3,789,763 km (0.102 R)
• M9: 4,884,071 km (0.112 R)
• M10: 5,740,070 km (0.119 R)
• M11: 7,718,203 km (0.085 R)
• M12: 8,479,656 km (0.03 R)
• M13: 10,226,062 km (0.065 R)
• M14: 11,263,224 km (0.099 R)
• M15: 12,753,368 km (0.057 R)
• M16: 13,189,745 km (0.104 R)
• M17: 14,559,014 km (0.08 R)
• M18: 17,258,957 km (0.093 R)
• M19: 18,504,359 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 953.3

Radius: 10.7

Gravity: 8.33 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 2.85 AU - 3.07 AU

Year: 3341 Days

Day: 12.1 Hours

Environment

Temp: -197 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 32,009,028 km

• M1: 145,708 km (0.057 R)
• M2: 483,052 km (0.073 R)
• M3: 965,205 km (0.107 R)
• M4: 1,420,881 km (0.072 R)
• M5: 1,761,365 km (0.117 R)
• M6: 2,531,645 km (0.067 R)
• M7: 2,985,674 km (0.116 R)
• M8: 3,395,124 km (0.077 R)
• M9: 3,992,618 km (0.088 R)
• M10: 4,467,890 km (0.065 R)
• M11: 5,134,349 km (0.057 R)
• M12: 6,821,065 km (0.097 R)
• M13: 7,402,402 km (0.058 R)
• M14: 7,773,554 km (0.036 R)
• M15: 8,228,481 km (0.088 R)
• M16: 8,700,911 km (0.084 R)
• M17: 10,145,728 km (0.109 R)
• M18: 11,033,591 km (0.083 R)
• M19: 11,972,617 km (0.112 R)
• M20: 13,110,009 km (0.078 R)
• M21: 14,683,929 km (0.079 R)
• M22: 15,217,395 km (0.077 R)
• M23: 15,708,674 km (0.087 R)
• M24: 16,493,913 km (0.112 R)
• M25: 17,601,087 km (0.11 R)
• M26: 18,881,794 km (0.043 R)
• M27: 19,576,826 km (0.072 R)
• M28: 23,527,407 km (0.026 R)
• M29: 24,110,988 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.6

Radius: 9

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.49 AU - 3.63 AU

Year: 3511 Days

Day: 11 Hours

Environment

Temp: -199 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 32,009,028 km

• M1: 111,899 km (0.053 R)
• M2: 496,366 km (0.117 R)
• M3: 908,508 km (0.105 R)
• M4: 1,202,767 km (0.051 R)
• M5: 1,523,954 km (0.083 R)
• M6: 2,193,254 km (0.102 R)
• M7: 2,527,456 km (0.071 R)
• M8: 3,514,952 km (0.076 R)
• M9: 4,515,313 km (0.071 R)
• M10: 5,147,513 km (0.093 R)
• M11: 6,745,368 km (0.095 R)
• M12: 7,686,339 km (0.096 R)
• M13: 9,258,463 km (0.115 R)
• M14: 9,759,167 km (0.111 R)
• M15: 10,887,434 km (0.03 R)
• M16: 11,369,887 km (0.052 R)
• M17: 12,417,371 km (0.082 R)
• M18: 13,109,112 km (0.11 R)
• M19: 14,348,231 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 302.4

Radius: 13.8

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 3.11 AU - 4.03 AU

Year: 4425 Days

Day: 13.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 32,009,028 km

• M1: 171,589 km (0.061 R)
• M2: 797,955 km (0.08 R)
• M3: 1,334,263 km (0.069 R)
• M4: 2,721,335 km (0.079 R)
• M5: 3,319,128 km (0.118 R)
• M6: 4,064,724 km (0.058 R)
• M7: 5,630,864 km (0.077 R)
• M8: 9,399,833 km (0.106 R)
• M9: 9,994,933 km (0.055 R)
• M10: 10,774,188 km (0.112 R)
• M11: 12,105,011 km (0.098 R)
• M12: 12,900,273 km (0.086 R)
• M13: 13,683,268 km (0.063 R)
• M14: 14,254,732 km (0.044 R)
• M15: 14,842,054 km (0.073 R)
• M16: 16,065,465 km (0.072 R)
• M17: 16,594,593 km (0.112 R)
• M18: 17,688,003 km (0.097 R)
• M19: 18,138,443 km (0.059 R)
• M20: 18,654,555 km (0.037 R)
• M21: 19,716,102 km (0.113 R)
• M22: 20,693,125 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 156.2

Radius: 4.4

Gravity: 8.07 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 5.46 AU - 7.98 AU

Year: 11428 Days

Day: 24.9 Hours

Environment

Temp: -231 °C

Axial Tilt: 107.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 32,009,028 km

• M1: 54,902 km (0.105 R)
• M2: 223,050 km (0.116 R)
• M3: 409,150 km (0.084 R)
• M4: 683,662 km (0.119 R)
• M5: 1,121,535 km (0.12 R)
• M6: 1,726,359 km (0.12 R)
• M7: 2,161,689 km (0.114 R)
• M8: 2,405,235 km (0.03 R)
• M9: 2,947,228 km (0.096 R)
• M10: 4,170,041 km (0.07 R)
• M11: 10,057,914 km (0.102 R)
• M12: 11,539,980 km (0.101 R)
• M13: 15,160,398 km (0.051 R)
• M14: 17,673,343 km (0.028 R)
• M15: 18,859,205 km (0.071 R)
• M16: 20,167,439 km (0.117 R)
• M17: 20,592,895 km (0.094 R)
• M18: 21,315,153 km (0.107 R)
• M19: 22,810,085 km (0.11 R)
• M20: 26,595,509 km (0.097 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 518 - 12,919 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit