🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.51 AU - 0.81 AU

Year: 352 Days

Day: 31.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 2.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 134.9

Radius: 13.2

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.75 AU - 0.83 AU

Year: 461 Days

Day: 6 Hours

Environment

Temp: -150 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 28,897,822 km

• M1: 164,258 km (0.025 R)
• M2: 729,888 km (0.038 R)
• M3: 1,151,754 km (0.097 R)
• M4: 1,761,964 km (0.052 R)
• M5: 2,249,204 km (0.118 R)
• M6: 3,441,948 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 806.7

Radius: 8.5

Gravity: 11.17 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 1.35 AU - 1.35 AU

Year: 1029 Days

Day: 9.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 28,897,822 km

• M1: 105,766 km (0.05 R)
• M2: 469,887 km (0.051 R)
• M3: 831,615 km (0.116 R)
• M4: 1,219,821 km (0.118 R)
• M5: 1,653,655 km (0.049 R)
• M6: 2,018,524 km (0.104 R)
• M7: 2,343,899 km (0.036 R)
• M8: 2,629,332 km (0.029 R)
• M9: 3,521,833 km (0.115 R)
• M10: 4,062,779 km (0.1 R)
• M11: 5,870,370 km (0.114 R)
• M12: 6,795,483 km (0.11 R)
• M13: 7,305,612 km (0.092 R)
• M14: 8,131,542 km (0.108 R)
• M15: 8,567,320 km (0.076 R)
• M16: 9,724,909 km (0.087 R)
• M17: 10,122,690 km (0.107 R)
• M18: 10,691,311 km (0.065 R)
• M19: 10,983,476 km (0.055 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 622.5

Radius: 15

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.41 AU - 2.23 AU

Year: 1611 Days

Day: 6.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 28,897,822 km

• M1: 186,848 km (0.093 R)
• M2: 673,789 km (0.099 R)
• M3: 1,310,178 km (0.044 R)
• M4: 1,791,435 km (0.111 R)
• M5: 2,956,952 km (0.081 R)
• M6: 3,892,686 km (0.083 R)
• M7: 4,698,720 km (0.107 R)
• M8: 5,547,987 km (0.081 R)
• M9: 6,208,910 km (0.12 R)
• M10: 6,770,052 km (0.092 R)
• M11: 7,338,524 km (0.063 R)
• M12: 8,840,187 km (0.116 R)
• M13: 9,776,670 km (0.117 R)
• M14: 11,056,779 km (0.098 R)
• M15: 11,555,688 km (0.085 R)
• M16: 12,869,157 km (0.111 R)
• M17: 13,582,439 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 617.2

Radius: 10.9

Gravity: 5.19 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 2.26 AU - 3.4 AU

Year: 3123 Days

Day: 14.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 28,897,822 km

• M1: 137,780 km (0.115 R)
• M2: 620,532 km (0.065 R)
• M3: 1,542,204 km (0.099 R)
• M4: 2,130,274 km (0.1 R)
• M5: 2,735,098 km (0.104 R)
• M6: 3,323,915 km (0.113 R)
• M7: 3,834,493 km (0.068 R)
• M8: 4,374,990 km (0.069 R)
• M9: 4,918,329 km (0.109 R)
• M10: 5,686,514 km (0.07 R)
• M11: 7,122,205 km (0.06 R)
• M12: 7,461,194 km (0.076 R)
• M13: 8,105,362 km (0.075 R)
• M14: 10,184,473 km (0.111 R)
• M15: 11,347,447 km (0.054 R)
• M16: 13,745,800 km (0.07 R)
• M17: 17,168,151 km (0.108 R)
• M18: 18,290,883 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 452.7

Radius: 9.9

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 2.93 AU - 3.85 AU

Year: 4095 Days

Day: 5.6 Hours

Environment

Temp: -216 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 28,897,822 km

• M1: 123,269 km (0.112 R)
• M2: 464,053 km (0.071 R)
• M3: 984,055 km (0.103 R)
• M4: 1,523,654 km (0.06 R)
• M5: 2,021,067 km (0.092 R)
• M6: 2,531,046 km (0.077 R)
• M7: 3,232,660 km (0.059 R)
• M8: 3,669,187 km (0.107 R)
• M9: 4,476,417 km (0.082 R)
• M10: 5,475,581 km (0.113 R)
• M11: 6,706,473 km (0.118 R)
• M12: 7,977,456 km (0.101 R)
• M13: 8,458,264 km (0.11 R)
• M14: 8,921,867 km (0.112 R)
• M15: 9,327,278 km (0.108 R)
• M16: 13,216,523 km (0.07 R)
• M17: 14,485,861 km (0.067 R)
• M18: 15,411,124 km (0.041 R)
• M19: 16,103,463 km (0.104 R)
• M20: 20,005,274 km (0.091 R)
• M21: 21,874,051 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 418.1

Radius: 9

Gravity: 5.16 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 3.68 AU - 4.62 AU

Year: 5546 Days

Day: 7.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 45 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 28,897,822 km

• M1: 118,482 km (0.115 R)
• M2: 435,928 km (0.097 R)
• M3: 879,935 km (0.108 R)
• M4: 1,355,656 km (0.09 R)
• M5: 2,315,625 km (0.108 R)
• M6: 2,636,064 km (0.038 R)
• M7: 3,153,822 km (0.08 R)
• M8: 4,067,267 km (0.111 R)
• M9: 4,585,624 km (0.11 R)
• M10: 4,886,614 km (0.091 R)
• M11: 7,077,774 km (0.116 R)
• M12: 7,446,683 km (0.107 R)
• M13: 7,828,457 km (0.117 R)
• M14: 8,223,096 km (0.096 R)
• M15: 11,188,425 km (0.067 R)
• M16: 13,183,612 km (0.094 R)
• M17: 13,486,697 km (0.103 R)
• M18: 13,898,241 km (0.057 R)
• M19: 16,721,601 km (0.092 R)
• M20: 17,619,787 km (0.084 R)
• M21: 19,187,572 km (0.089 R)
• M22: 24,295,592 km (0.031 R)
• M23: 25,136,481 km (0.075 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 254.1

Radius: 9.2

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 4.37 AU - 5.03 AU

Year: 6684 Days

Day: 5.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 28,897,822 km

• M1: 117,285 km (0.075 R)
• M2: 463,454 km (0.033 R)
• M3: 981,512 km (0.07 R)
• M4: 2,750,207 km (0.08 R)
• M5: 3,179,703 km (0.047 R)
• M6: 4,475,968 km (0.114 R)
• M7: 6,700,638 km (0.095 R)
• M8: 8,069,758 km (0.102 R)
• M9: 10,651,518 km (0.069 R)
• M10: 10,997,837 km (0.091 R)
• M11: 11,989,372 km (0.118 R)
• M12: 13,039,399 km (0.106 R)
• M13: 14,727,761 km (0.108 R)
• M14: 18,595,165 km (0.064 R)
• M15: 19,289,000 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 131.2

Radius: 6.7

Gravity: 2.92 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 6.06 AU - 6.8 AU

Year: 10696 Days

Day: 21.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 28,897,822 km

• M1: 87,814 km (0.114 R)
• M2: 313,856 km (0.119 R)
• M3: 750,383 km (0.091 R)
• M4: 1,215,782 km (0.073 R)
• M5: 3,230,267 km (0.078 R)
• M6: 3,452,569 km (0.082 R)
• M7: 4,471,032 km (0.11 R)
• M8: 5,308,032 km (0.115 R)
• M9: 5,911,360 km (0.098 R)
• M10: 7,050,847 km (0.117 R)
• M11: 7,960,103 km (0.075 R)
• M12: 8,749,680 km (0.075 R)
• M13: 9,063,836 km (0.085 R)
• M14: 13,186,903 km (0.117 R)
• M15: 16,263,084 km (0.085 R)
• M16: 21,940,622 km (0.118 R)
• M17: 25,576,598 km (0.056 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 384 - 19,240 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit