🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

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: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.52 AU - 0.54 AU

Year: 253 Days

Day: 43.8 Hours

Environment

Temp: -110 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.5

Radius: 8.7

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.65 AU - 0.79 AU

Year: 401 Days

Day: 8.5 Hours

Environment

Temp: -133 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,188,761 km

• M1: 108,309 km (0.12 R)
• M2: 382,372 km (0.109 R)
• M3: 969,245 km (0.036 R)
• M4: 1,420,282 km (0.112 R)
• M5: 1,809,087 km (0.062 R)
• M6: 2,178,295 km (0.11 R)
• M7: 3,257,194 km (0.09 R)
• M8: 3,938,762 km (0.075 R)
• M9: 4,430,790 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 422.4

Radius: 15

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.63 AU - 0.87 AU

Year: 426 Days

Day: 12.9 Hours

Environment

Temp: -144 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,188,761 km

• M1: 186,698 km (0.118 R)
• M2: 814,560 km (0.087 R)
• M3: 1,601,744 km (0.071 R)
• M4: 2,407,927 km (0.083 R)
• M5: 3,159,806 km (0.116 R)
• M6: 3,953,573 km (0.041 R)
• M7: 4,806,729 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 995.1

Radius: 10.9

Gravity: 8.38 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.79 AU - 1.09 AU

Year: 598 Days

Day: 9.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,188,761 km

• M1: 135,685 km (0.069 R)
• M2: 479,611 km (0.119 R)
• M3: 855,101 km (0.099 R)
• M4: 1,205,908 km (0.108 R)
• M5: 1,864,139 km (0.056 R)
• M6: 2,346,891 km (0.086 R)
• M7: 2,748,412 km (0.112 R)
• M8: 3,444,042 km (0.066 R)
• M9: 4,854,900 km (0.09 R)
• M10: 6,247,805 km (0.109 R)
• M11: 7,135,818 km (0.087 R)
• M12: 7,726,431 km (0.107 R)
• M13: 8,130,046 km (0.027 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 846.9

Radius: 12.3

Gravity: 5.6 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.49 AU - 2.33 AU

Year: 1732 Days

Day: 9.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,188,761 km

• M1: 153,039 km (0.108 R)
• M2: 706,401 km (0.079 R)
• M3: 1,300,753 km (0.094 R)
• M4: 1,693,747 km (0.065 R)
• M5: 2,240,527 km (0.11 R)
• M6: 3,053,741 km (0.114 R)
• M7: 3,555,193 km (0.041 R)
• M8: 4,073,550 km (0.066 R)
• M9: 4,500,203 km (0.094 R)
• M10: 5,043,094 km (0.118 R)
• M11: 5,629,218 km (0.058 R)
• M12: 6,361,799 km (0.092 R)
• M13: 7,156,912 km (0.116 R)
• M14: 7,810,505 km (0.11 R)
• M15: 8,977,219 km (0.087 R)
• M16: 10,292,034 km (0.084 R)
• M17: 11,577,978 km (0.095 R)
• M18: 13,259,009 km (0.082 R)
• M19: 15,746,522 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.9

Radius: 11

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 3.09 AU - 3.79 AU

Year: 4185 Days

Day: 13.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,188,761 km

• M1: 136,882 km (0.114 R)
• M2: 549,623 km (0.103 R)
• M3: 1,665,922 km (0.025 R)
• M4: 2,029,894 km (0.102 R)
• M5: 2,386,684 km (0.112 R)
• M6: 3,458,852 km (0.106 R)
• M7: 6,316,620 km (0.091 R)
• M8: 6,833,780 km (0.111 R)
• M9: 8,448,390 km (0.104 R)
• M10: 9,191,144 km (0.117 R)
• M11: 11,637,368 km (0.059 R)
• M12: 12,651,642 km (0.114 R)
• M13: 14,802,709 km (0.071 R)
• M14: 16,159,861 km (0.088 R)
• M15: 18,747,156 km (0.066 R)
• M16: 20,009,912 km (0.099 R)
• M17: 21,395,936 km (0.12 R)
• M18: 25,101,924 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 458.9

Radius: 5.6

Gravity: 14.63 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 5.85 AU - 9.45 AU

Year: 13880 Days

Day: 17.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 52,188,761 km

• M1: 75,397 km (0.079 R)
• M2: 279,150 km (0.094 R)
• M3: 1,314,666 km (0.101 R)
• M4: 1,761,515 km (0.049 R)
• M5: 1,994,140 km (0.061 R)
• M6: 2,285,107 km (0.111 R)
• M7: 3,714,515 km (0.043 R)
• M8: 3,903,457 km (0.047 R)
• M9: 4,184,701 km (0.101 R)
• M10: 6,052,431 km (0.087 R)
• M11: 6,276,827 km (0.085 R)
• M12: 10,186,269 km (0.12 R)
• M13: 12,794,059 km (0.088 R)
• M14: 15,956,707 km (0.087 R)
• M15: 18,881,794 km (0.084 R)
• M16: 19,200,588 km (0.069 R)
• M17: 24,143,002 km (0.039 R)
• M18: 25,766,438 km (0.114 R)
• M19: 26,955,292 km (0.109 R)
• M20: 27,665,433 km (0.108 R)
• M21: 29,978,516 km (0.062 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: 461 - 10,753 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit