🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.01

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.48 AU - 0.58 AU

Year: 253 Days

Day: 15.4 Hours

Environment

Temp: -112 °C

Axial Tilt: 25.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,455,606 km

• M1: 169,794 km (0.045 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.9

Radius: 11.3

Gravity: 6.44 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.55 AU - 0.91 AU

Year: 409 Days

Day: 6.4 Hours

Environment

Temp: -145 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 29,455,606 km

• M1: 140,772 km (0.067 R)
• M2: 524,490 km (0.041 R)
• M3: 947,703 km (0.111 R)
• M4: 1,611,169 km (0.075 R)
• M5: 2,704,131 km (0.037 R)
• M6: 4,520,997 km (0.103 R)
• M7: 5,584,489 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 633.2

Radius: 9.3

Gravity: 7.32 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.75 AU - 0.97 AU

Year: 523 Days

Day: 12.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 29,455,606 km

• M1: 115,789 km (0.066 R)
• M2: 591,061 km (0.087 R)
• M3: 932,144 km (0.056 R)
• M4: 1,254,528 km (0.068 R)
• M5: 1,659,639 km (0.113 R)
• M6: 2,002,517 km (0.091 R)
• M7: 2,402,243 km (0.073 R)
• M8: 2,887,837 km (0.064 R)
• M9: 3,266,918 km (0.09 R)
• M10: 3,627,449 km (0.086 R)
• M11: 4,839,790 km (0.116 R)
• M12: 5,581,945 km (0.093 R)
• M13: 6,191,407 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 628.7

Radius: 10.2

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.84 AU - 1.08 AU

Year: 617 Days

Day: 10.7 Hours

Environment

Temp: -161 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,455,606 km

• M1: 126,859 km (0.077 R)
• M2: 547,528 km (0.108 R)
• M3: 888,013 km (0.083 R)
• M4: 1,296,565 km (0.119 R)
• M5: 1,797,418 km (0.106 R)
• M6: 2,181,586 km (0.053 R)
• M7: 2,526,110 km (0.063 R)
• M8: 3,479,497 km (0.089 R)
• M9: 3,939,062 km (0.098 R)
• M10: 5,165,166 km (0.065 R)
• M11: 5,655,847 km (0.116 R)
• M12: 6,100,900 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 808

Radius: 8.9

Gravity: 10.2 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.53 AU - 2.01 AU

Year: 1545 Days

Day: 7.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 29,455,606 km

• M1: 117,883 km (0.115 R)
• M2: 428,299 km (0.102 R)
• M3: 747,241 km (0.109 R)
• M4: 1,144,873 km (0.06 R)
• M5: 1,584,391 km (0.115 R)
• M6: 2,401,943 km (0.094 R)
• M7: 4,214,322 km (0.049 R)
• M8: 5,074,061 km (0.028 R)
• M9: 5,998,127 km (0.12 R)
• M10: 8,001,841 km (0.074 R)
• M11: 8,841,384 km (0.096 R)
• M12: 10,484,716 km (0.086 R)
• M13: 13,317,352 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 590.9

Radius: 13.4

Gravity: 3.29 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 2.02 AU - 2.26 AU

Year: 2054 Days

Day: 14.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 29,455,606 km

• M1: 166,652 km (0.03 R)
• M2: 586,723 km (0.084 R)
• M3: 1,015,470 km (0.099 R)
• M4: 1,736,682 km (0.088 R)
• M5: 2,882,601 km (0.114 R)
• M6: 3,646,897 km (0.101 R)
• M7: 4,364,219 km (0.083 R)
• M8: 4,830,216 km (0.108 R)
• M9: 5,511,186 km (0.095 R)
• M10: 7,856,581 km (0.1 R)
• M11: 9,415,241 km (0.112 R)
• M12: 9,955,290 km (0.045 R)
• M13: 10,659,147 km (0.073 R)
• M14: 15,555,037 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 607.9

Radius: 13.8

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 2.61 AU - 2.97 AU

Year: 3057 Days

Day: 8.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 29,455,606 km

• M1: 171,589 km (0.117 R)
• M2: 626,665 km (0.107 R)
• M3: 1,430,006 km (0.114 R)
• M4: 2,337,916 km (0.115 R)
• M5: 2,857,619 km (0.097 R)
• M6: 4,113,044 km (0.051 R)
• M7: 5,160,678 km (0.111 R)
• M8: 5,838,954 km (0.083 R)
• M9: 6,268,450 km (0.086 R)
• M10: 7,011,951 km (0.066 R)
• M11: 8,269,920 km (0.087 R)
• M12: 9,165,114 km (0.092 R)
• M13: 10,124,036 km (0.078 R)
• M14: 11,940,453 km (0.082 R)
• M15: 13,589,770 km (0.118 R)
• M16: 16,368,251 km (0.058 R)
• M17: 19,034,833 km (0.069 R)
• M18: 19,684,537 km (0.079 R)
• M19: 20,594,391 km (0.056 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 204.8

Radius: 9.9

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 5.6 AU - 5.7 AU

Year: 8810 Days

Day: 10.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 29,455,606 km

• M1: 123,119 km (0.067 R)
• M2: 1,573,022 km (0.063 R)
• M3: 2,086,142 km (0.078 R)
• M4: 3,552,949 km (0.118 R)
• M5: 3,900,764 km (0.092 R)
• M6: 4,589,663 km (0.072 R)
• M7: 6,395,758 km (0.039 R)
• M8: 8,556,101 km (0.099 R)
• M9: 10,314,025 km (0.094 R)
• M10: 11,393,823 km (0.1 R)
• M11: 12,251,916 km (0.041 R)
• M12: 17,508,636 km (0.048 R)
• M13: 19,639,208 km (0.042 R)
• M14: 24,642,060 km (0.112 R)
• M15: 26,400,434 km (0.11 R)
• M16: 27,060,011 km (0.115 R)
• M17: 27,730,658 km (0.11 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 475 - 13,299 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit