🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.06

Radius: 1.56

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.56 AU - 0.8 AU

Year: 209 Days

Day: 43.5 Hours

Environment

Temp: 147 °C

Axial Tilt: 22.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.97

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.7 AU - 0.8 AU

Year: 242 Days

Day: 22.8 Hours

Environment

Temp: 162 °C

Axial Tilt: 28.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 84,879,253 km

• M1: 166,951 km (0.071 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.79

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.05 AU - 1.07 AU

Year: 407 Days

Day: 13 Hours

Environment

Temp: 22 °C

Axial Tilt: 14 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.51 AU - 2.11 AU

Year: 908 Days

Day: 30.4 Hours

Environment

Temp: -60 °C

Axial Tilt: 3.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.95

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 2.62 AU - 3.12 AU

Year: 1812 Days

Day: 40.9 Hours

Environment

Temp: -98 °C

Axial Tilt: 36.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 499.3

Radius: 14

Gravity: 2.55 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 4.32 AU - 5.48 AU

Year: 4043 Days

Day: 9.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 84,879,253 km

• M1: 174,581 km (0.083 R)
• M2: 704,756 km (0.119 R)
• M3: 1,257,370 km (0.117 R)
• M4: 1,787,844 km (0.116 R)
• M5: 2,636,214 km (0.055 R)
• M6: 3,466,332 km (0.084 R)
• M7: 4,419,570 km (0.051 R)
• M8: 4,861,632 km (0.096 R)
• M9: 5,754,282 km (0.109 R)
• M10: 6,874,920 km (0.066 R)
• M11: 7,311,147 km (0.055 R)
• M12: 8,554,156 km (0.033 R)
• M13: 10,330,930 km (0.117 R)
• M14: 12,942,609 km (0.057 R)
• M15: 14,401,338 km (0.065 R)
• M16: 15,913,324 km (0.04 R)
• M17: 17,471,386 km (0.081 R)
• M18: 19,745,573 km (0.103 R)
• M19: 22,481,867 km (0.071 R)
• M20: 23,168,970 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 72.4

Radius: 9.3

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 7.14 AU - 7.52 AU

Year: 7398 Days

Day: 11.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 84,879,253 km

• M1: 121,922 km (0.081 R)
• M2: 1,018,911 km (0.081 R)
• M3: 1,470,846 km (0.056 R)
• M4: 2,602,704 km (0.101 R)
• M5: 3,456,010 km (0.062 R)
• M6: 4,317,694 km (0.077 R)
• M7: 5,316,260 km (0.078 R)
• M8: 6,934,460 km (0.097 R)
• M9: 8,012,462 km (0.113 R)
• M10: 8,891,499 km (0.042 R)
• M11: 11,833,192 km (0.09 R)
• M12: 13,058,847 km (0.086 R)
• M13: 14,695,896 km (0.091 R)
• M14: 15,367,890 km (0.089 R)
• M15: 15,662,149 km (0.111 R)
• M16: 16,060,379 km (0.119 R)
• M17: 16,516,353 km (0.099 R)
• M18: 17,033,214 km (0.087 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 518.5

Radius: 12.6

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 7.36 AU - 7.9 AU

Year: 7857 Days

Day: 11.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 84,879,253 km

• M1: 232,625 km (0.116 R)
• M2: 1,005,148 km (0.112 R)
• M3: 1,677,591 km (0.077 R)
• M4: 2,900,703 km (0.091 R)
• M5: 4,278,499 km (0.12 R)
• M6: 4,758,708 km (0.107 R)
• M7: 5,364,580 km (0.057 R)
• M8: 6,119,450 km (0.082 R)
• M9: 6,979,788 km (0.112 R)
• M10: 8,646,607 km (0.109 R)
• M11: 9,417,934 km (0.09 R)
• M12: 15,287,406 km (0.119 R)
• M13: 17,800,800 km (0.073 R)
• M14: 22,582,995 km (0.033 R)
• M15: 28,623,159 km (0.077 R)
• M16: 31,314,275 km (0.043 R)
• M17: 34,697,431 km (0.084 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 699.9

Radius: 7.6

Gravity: 12.12 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 16.05 AU - 18.55 AU

Year: 26824 Days

Day: 23.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 57.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 84,879,253 km

• M1: 94,695 km (0.034 R)
• M2: 428,000 km (0.063 R)
• M3: 1,430,455 km (0.08 R)
• M4: 1,749,996 km (0.047 R)
• M5: 2,009,847 km (0.114 R)
• M6: 2,788,504 km (0.067 R)
• M7: 3,174,168 km (0.104 R)
• M8: 3,471,119 km (0.085 R)
• M9: 5,920,336 km (0.064 R)
• M10: 7,497,247 km (0.111 R)
• M11: 8,134,534 km (0.036 R)
• M12: 10,073,173 km (0.083 R)
• M13: 12,085,713 km (0.056 R)
• M14: 22,826,092 km (0.075 R)
• M15: 25,195,273 km (0.119 R)
• M16: 25,782,744 km (0.116 R)
• M17: 27,475,893 km (0.07 R)
• M18: 27,973,007 km (0.107 R)
• M19: 28,476,104 km (0.103 R)
• M20: 30,548,783 km (0.117 R)
• M21: 36,464,481 km (0.114 R)
• M22: 37,064,817 km (0.066 R)
• M23: 37,824,475 km (0.107 R)
• M24: 40,484,924 km (0.114 R)
• M25: 40,805,961 km (0.092 R)
• M26: 42,436,278 km (0.086 R)
• M27: 43,940,485 km (0.109 R)
• M28: 50,498,257 km (0.109 R)
• M29: 55,873,907 km (0.097 R)
• M30: 58,699,213 km (0.06 R)
• M31: 59,523,796 km (0.06 R)
• M32: 61,195,702 km (0.101 R)
• M33: 75,714,325 km (0.099 R)
• M34: 81,190,804 km (0.111 R)
• M35: 85,072,420 km (0.074 R)
• M36: 89,347,179 km (0.09 R)

Planet 10 - Ice Giant

Semi-Major Axis: 19.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 384.3

Radius: 7.7

Gravity: 6.48 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 17.95 AU - 20.53 AU

Year: 31460 Days

Day: 15.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 84,879,253 km

• M1: 101,577 km (0.118 R)
• M2: 365,019 km (0.087 R)
• M3: 869,762 km (0.09 R)
• M4: 1,140,833 km (0.096 R)
• M5: 1,691,503 km (0.099 R)
• M6: 1,956,890 km (0.1 R)
• M7: 2,548,849 km (0.065 R)
• M8: 3,487,276 km (0.119 R)
• M9: 4,084,471 km (0.061 R)
• M10: 4,784,888 km (0.104 R)
• M11: 6,883,746 km (0.089 R)
• M12: 9,530,880 km (0.046 R)
• M13: 11,948,382 km (0.047 R)
• M14: 13,078,743 km (0.08 R)
• M15: 14,985,069 km (0.104 R)
• M16: 16,467,434 km (0.065 R)
• M17: 17,331,961 km (0.094 R)
• M18: 18,685,073 km (0.102 R)
• M19: 24,470,621 km (0.075 R)
• M20: 25,141,568 km (0.112 R)
• M21: 27,346,790 km (0.095 R)
• M22: 29,804,085 km (0.066 R)
• M23: 30,312,717 km (0.093 R)
• M24: 32,942,648 km (0.045 R)
• M25: 40,640,206 km (0.116 R)
• M26: 41,897,277 km (0.088 R)
• M27: 43,018,364 km (0.1 R)
• M28: 47,530,086 km (0.118 R)
• M29: 57,873,283 km (0.106 R)
• M30: 63,775,816 km (0.112 R)
• M31: 70,740,495 km (0.064 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: 312 - 10,848 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit