🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.52 AU - 0.78 AU

Year: 191 Days

Day: 18.8 Hours

Environment

Temp: 167 °C

Axial Tilt: 42.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 43,564,311 km

• M1: 29,920 km (0.072 R)

Planet 2 - Terrestrial

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.92

Radius: 1.54

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 1.89 AU - 2.49 AU

Year: 1184 Days

Day: 44.9 Hours

Environment

Temp: -83 °C

Axial Tilt: 20.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.28

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 2.16 AU - 2.84 AU

Year: 1444 Days

Day: 15.9 Hours

Environment

Temp: -81 °C

Axial Tilt: 40 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.1

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.33 AU - 3.09 AU

Year: 1629 Days

Day: 38.2 Hours

Environment

Temp: -98 °C

Axial Tilt: 6.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.08 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 197.3

Radius: 8.7

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 5.83 AU - 9.05 AU

Year: 7412 Days

Day: 13.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 43,564,311 km

• M1: 108,608 km (0.117 R)
• M2: 394,490 km (0.101 R)
• M3: 833,559 km (0.101 R)
• M4: 1,723,667 km (0.108 R)
• M5: 2,233,347 km (0.064 R)
• M6: 2,704,131 km (0.044 R)
• M7: 3,201,843 km (0.035 R)
• M8: 3,593,790 km (0.099 R)
• M9: 4,287,625 km (0.047 R)
• M10: 5,067,927 km (0.117 R)
• M11: 5,492,037 km (0.098 R)
• M12: 7,804,072 km (0.106 R)
• M13: 8,443,154 km (0.09 R)
• M14: 8,812,960 km (0.113 R)
• M15: 9,664,770 km (0.047 R)
• M16: 10,870,080 km (0.085 R)
• M17: 11,175,559 km (0.117 R)
• M18: 12,645,358 km (0.115 R)
• M19: 14,977,739 km (0.114 R)
• M20: 15,465,577 km (0.056 R)
• M21: 19,118,608 km (0.107 R)
• M22: 24,259,838 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.3

Radius: 13.3

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 11.42 AU - 12.1 AU

Year: 14730 Days

Day: 6.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 43,564,311 km

• M1: 165,455 km (0.062 R)
• M2: 588,518 km (0.117 R)
• M3: 1,132,905 km (0.094 R)
• M4: 2,050,538 km (0.043 R)
• M5: 2,542,715 km (0.097 R)
• M6: 3,998,601 km (0.099 R)
• M7: 5,614,109 km (0.108 R)
• M8: 6,107,931 km (0.097 R)
• M9: 6,839,764 km (0.064 R)
• M10: 7,404,197 km (0.103 R)
• M11: 8,236,859 km (0.101 R)
• M12: 9,182,616 km (0.112 R)
• M13: 10,535,729 km (0.091 R)
• M14: 12,142,261 km (0.09 R)
• M15: 13,037,006 km (0.11 R)
• M16: 16,061,426 km (0.084 R)
• M17: 16,904,559 km (0.058 R)
• M18: 17,376,840 km (0.12 R)
• M19: 21,478,365 km (0.05 R)
• M20: 22,786,748 km (0.096 R)
• M21: 26,184,564 km (0.115 R)
• M22: 27,677,102 km (0.034 R)
• M23: 29,338,536 km (0.051 R)
• M24: 30,598,449 km (0.116 R)
• M25: 31,300,662 km (0.105 R)
• M26: 37,711,080 km (0.11 R)
• M27: 44,347,541 km (0.106 R)
• M28: 46,773,569 km (0.068 R)
• M29: 49,607,103 km (0.064 R)
• M30: 53,729,721 km (0.052 R)
• M31: 55,095,849 km (0.111 R)
• M32: 62,650,092 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 404.3

Radius: 6

Gravity: 11.23 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 11.54 AU - 16.74 AU

Year: 19421 Days

Day: 22.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 43,564,311 km

• M1: 74,649 km (0.102 R)
• M2: 381,774 km (0.097 R)
• M3: 574,755 km (0.056 R)
• M4: 815,458 km (0.119 R)
• M5: 1,135,747 km (0.033 R)
• M6: 2,847,745 km (0.099 R)
• M7: 4,045,426 km (0.092 R)
• M8: 4,542,539 km (0.114 R)
• M9: 5,010,182 km (0.066 R)
• M10: 5,363,383 km (0.091 R)
• M11: 5,847,332 km (0.116 R)
• M12: 6,647,980 km (0.118 R)
• M13: 7,118,315 km (0.057 R)
• M14: 8,077,687 km (0.12 R)
• M15: 8,613,097 km (0.12 R)
• M16: 10,305,797 km (0.118 R)
• M17: 12,334,644 km (0.075 R)
• M18: 13,176,132 km (0.111 R)
• M19: 18,458,133 km (0.108 R)
• M20: 22,924,378 km (0.074 R)
• M21: 25,818,947 km (0.078 R)
• M22: 26,764,555 km (0.12 R)
• M23: 27,192,106 km (0.118 R)
• M24: 27,842,109 km (0.117 R)
• M25: 29,060,434 km (0.111 R)
• M26: 29,739,757 km (0.115 R)
• M27: 30,895,401 km (0.101 R)
• M28: 31,602,999 km (0.116 R)
• M29: 32,321,368 km (0.067 R)
• M30: 38,329,368 km (0.057 R)
• M31: 41,381,015 km (0.086 R)
• M32: 41,809,314 km (0.112 R)
• M33: 43,995,238 km (0.11 R)
• M34: 47,337,254 km (0.082 R)
• M35: 48,119,651 km (0.107 R)
• M36: 50,518,902 km (0.027 R)
• M37: 55,727,600 km (0.104 R)
• M38: 58,192,824 km (0.063 R)
• M39: 61,282,917 km (0.078 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 77.5

Radius: 7.5

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 15.86 AU - 18.28 AU

Year: 25760 Days

Day: 22.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 43,564,311 km

• M1: 93,349 km (0.097 R)
• M2: 368,460 km (0.05 R)
• M3: 686,804 km (0.096 R)
• M4: 1,478,027 km (0.098 R)
• M5: 2,441,138 km (0.116 R)
• M6: 3,501,488 km (0.103 R)
• M7: 3,923,952 km (0.06 R)
• M8: 4,752,126 km (0.071 R)
• M9: 4,991,483 km (0.109 R)
• M10: 7,404,945 km (0.119 R)
• M11: 8,314,500 km (0.1 R)
• M12: 9,436,185 km (0.107 R)
• M13: 13,581,841 km (0.034 R)
• M14: 13,882,982 km (0.114 R)
• M15: 15,260,928 km (0.114 R)
• M16: 19,861,960 km (0.071 R)
• M17: 20,564,322 km (0.06 R)
• M18: 28,916,969 km (0.083 R)
• M19: 29,920,023 km (0.096 R)
• M20: 31,154,056 km (0.098 R)
• M21: 41,510,866 km (0.045 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 323 - 10,703 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit