🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.5 AU - 0.58 AU

Year: 256 Days

Day: 38.4 Hours

Environment

Temp: -121 °C

Axial Tilt: 5.8 °

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: 789.5

Radius: 11.9

Gravity: 5.58 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.79 AU - 0.81 AU

Year: 462 Days

Day: 13.3 Hours

Environment

Temp: -142 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 79,486,535 km

• M1: 147,952 km (0.084 R)
• M2: 705,204 km (0.1 R)
• M3: 1,094,608 km (0.096 R)
• M4: 1,479,822 km (0.108 R)
• M5: 1,884,335 km (0.106 R)
• M6: 2,325,948 km (0.071 R)
• M7: 2,783,568 km (0.118 R)
• M8: 3,218,299 km (0.082 R)
• M9: 3,737,254 km (0.1 R)
• M10: 4,113,792 km (0.062 R)
• M11: 5,620,542 km (0.083 R)
• M12: 6,135,457 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 369.6

Radius: 12.5

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.98 AU - 1.34 AU

Year: 807 Days

Day: 6.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 79,486,535 km

• M1: 155,731 km (0.076 R)
• M2: 668,702 km (0.12 R)
• M3: 1,503,907 km (0.042 R)
• M4: 2,214,647 km (0.078 R)
• M5: 2,664,488 km (0.085 R)
• M6: 4,232,273 km (0.114 R)
• M7: 4,706,349 km (0.116 R)
• M8: 5,215,730 km (0.067 R)
• M9: 6,020,866 km (0.058 R)
• M10: 6,542,663 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58.6

Radius: 10.4

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 2.68 AU - 3.02 AU

Year: 3107 Days

Day: 7.7 Hours

Environment

Temp: -204 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 79,486,535 km

• M1: 129,402 km (0.053 R)
• M2: 542,741 km (0.115 R)
• M3: 1,109,119 km (0.084 R)
• M4: 2,204,325 km (0.114 R)
• M5: 2,694,258 km (0.061 R)
• M6: 3,121,509 km (0.114 R)
• M7: 3,893,733 km (0.084 R)
• M8: 4,510,077 km (0.067 R)
• M9: 5,322,842 km (0.086 R)
• M10: 6,061,855 km (0.108 R)
• M11: 6,665,333 km (0.118 R)
• M12: 7,004,920 km (0.113 R)
• M13: 7,475,705 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.5

Radius: 9.2

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 2.63 AU - 3.11 AU

Year: 3139 Days

Day: 8.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 79,486,535 km

• M1: 114,442 km (0.065 R)
• M2: 454,179 km (0.085 R)
• M3: 872,156 km (0.113 R)
• M4: 1,188,854 km (0.118 R)
• M5: 2,652,819 km (0.106 R)
• M6: 3,622,363 km (0.108 R)
• M7: 4,128,153 km (0.116 R)
• M8: 4,680,469 km (0.057 R)
• M9: 6,519,176 km (0.097 R)
• M10: 7,268,512 km (0.1 R)
• M11: 7,993,762 km (0.061 R)
• M12: 9,348,221 km (0.112 R)
• M13: 10,588,986 km (0.049 R)
• M14: 11,384,099 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 616.6

Radius: 13.6

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 3.89 AU - 5.41 AU

Year: 6474 Days

Day: 14.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 79,486,535 km

• M1: 169,195 km (0.063 R)
• M2: 733,927 km (0.118 R)
• M3: 1,430,455 km (0.111 R)
• M4: 2,229,457 km (0.117 R)
• M5: 2,871,531 km (0.098 R)
• M6: 3,373,282 km (0.102 R)
• M7: 4,101,375 km (0.112 R)
• M8: 5,358,895 km (0.102 R)
• M9: 6,319,912 km (0.082 R)
• M10: 8,186,594 km (0.113 R)
• M11: 9,722,366 km (0.073 R)
• M12: 10,259,572 km (0.11 R)
• M13: 10,911,369 km (0.027 R)
• M14: 11,739,843 km (0.058 R)
• M15: 13,522,451 km (0.069 R)
• M16: 14,023,155 km (0.058 R)
• M17: 14,885,287 km (0.079 R)
• M18: 17,750,386 km (0.077 R)
• M19: 19,806,010 km (0.119 R)
• M20: 22,709,854 km (0.11 R)
• M21: 26,659,986 km (0.071 R)
• M22: 27,982,731 km (0.113 R)
• M23: 28,797,141 km (0.065 R)
• M24: 30,663,674 km (0.109 R)
• M25: 31,142,686 km (0.072 R)
• M26: 31,626,635 km (0.043 R)
• M27: 32,609,493 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 152.6

Radius: 3.9

Gravity: 10.03 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 6.31 AU - 7.25 AU

Year: 11399 Days

Day: 15.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 79,486,535 km

• M1: 48,470 km (0.045 R)
• M2: 212,429 km (0.112 R)
• M3: 549,174 km (0.076 R)
• M4: 836,701 km (0.053 R)
• M5: 1,228,049 km (0.071 R)
• M6: 1,869,225 km (0.117 R)
• M7: 2,278,675 km (0.085 R)
• M8: 2,838,320 km (0.075 R)
• M9: 4,053,504 km (0.082 R)
• M10: 4,551,515 km (0.076 R)
• M11: 5,850,025 km (0.094 R)
• M12: 6,386,632 km (0.06 R)
• M13: 8,504,340 km (0.095 R)
• M14: 10,630,724 km (0.116 R)
• M15: 11,141,900 km (0.074 R)
• M16: 11,815,988 km (0.117 R)
• M17: 14,785,206 km (0.117 R)
• M18: 17,825,484 km (0.068 R)
• M19: 20,185,390 km (0.099 R)
• M20: 21,549,723 km (0.03 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 981.3

Radius: 4.5

Gravity: 48.46 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 9 AU - 9.28 AU

Year: 17842 Days

Day: 22.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 79,486,535 km

• M1: 56,099 km (0.112 R)
• M2: 230,530 km (0.115 R)
• M3: 740,210 km (0.04 R)
• M4: 1,224,010 km (0.115 R)
• M5: 1,744,162 km (0.088 R)
• M6: 2,013,288 km (0.11 R)
• M7: 2,445,327 km (0.088 R)
• M8: 5,733,189 km (0.087 R)
• M9: 7,587,454 km (0.036 R)
• M10: 7,787,467 km (0.089 R)
• M11: 8,568,667 km (0.058 R)
• M12: 8,730,981 km (0.063 R)
• M13: 11,747,921 km (0.041 R)
• M14: 14,382,190 km (0.09 R)
• M15: 14,534,929 km (0.07 R)
• M16: 17,471,685 km (0.074 R)
• M17: 20,490,271 km (0.106 R)
• M18: 21,568,871 km (0.062 R)
• M19: 25,810,719 km (0.106 R)
• M20: 26,491,389 km (0.031 R)
• M21: 29,334,198 km (0.106 R)
• M22: 32,373,727 km (0.119 R)
• M23: 38,332,809 km (0.071 R)
• M24: 39,666,175 km (0.113 R)
• M25: 40,572,139 km (0.116 R)
• M26: 49,181,347 km (0.118 R)
• M27: 51,464,659 km (0.111 R)
• M28: 51,822,049 km (0.05 R)
• M29: 53,817,385 km (0.104 R)
• M30: 54,555,651 km (0.114 R)
• M31: 62,109,446 km (0.099 R)
• M32: 67,088,063 km (0.079 R)
• M33: 70,111,735 km (0.104 R)
• M34: 71,656,931 km (0.032 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: 159 - 16,208 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit