🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.53 AU - 0.57 AU

Year: 259 Days

Day: 22.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 22.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 47,138,231 km

• M1: 50,414 km (0.084 R)
• M2: 286,181 km (0.032 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.2

Radius: 10.3

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.65 AU - 0.71 AU

Year: 357 Days

Day: 12.5 Hours

Environment

Temp: -146 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 47,138,231 km

• M1: 128,056 km (0.099 R)
• M2: 457,171 km (0.093 R)
• M3: 821,143 km (0.097 R)
• M4: 1,555,967 km (0.105 R)
• M5: 1,898,098 km (0.113 R)
• M6: 2,297,674 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 70.2

Radius: 13.4

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.67 AU - 0.99 AU

Year: 481 Days

Day: 7 Hours

Environment

Temp: -139 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 47,138,231 km

• M1: 167,250 km (0.109 R)
• M2: 604,974 km (0.11 R)
• M3: 1,027,588 km (0.091 R)
• M4: 1,510,340 km (0.05 R)
• M5: 2,907,435 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 818.7

Radius: 13.9

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 1.39 AU - 2.03 AU

Year: 1422 Days

Day: 11.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 47,138,231 km

• M1: 172,935 km (0.051 R)
• M2: 729,888 km (0.118 R)
• M3: 1,165,068 km (0.06 R)
• M4: 1,630,168 km (0.088 R)
• M5: 2,198,640 km (0.115 R)
• M6: 2,760,829 km (0.051 R)
• M7: 3,418,311 km (0.087 R)
• M8: 3,913,480 km (0.075 R)
• M9: 4,687,799 km (0.062 R)
• M10: 5,237,870 km (0.086 R)
• M11: 5,673,050 km (0.117 R)
• M12: 6,741,778 km (0.102 R)
• M13: 8,196,767 km (0.103 R)
• M14: 8,816,102 km (0.048 R)
• M15: 9,625,875 km (0.105 R)
• M16: 10,484,716 km (0.096 R)
• M17: 11,868,197 km (0.109 R)
• M18: 13,733,982 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 396.4

Radius: 12

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.1 AU - 3.46 AU

Year: 2947 Days

Day: 9.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 47,138,231 km

• M1: 151,842 km (0.074 R)
• M2: 538,403 km (0.104 R)
• M3: 1,158,037 km (0.079 R)
• M4: 1,823,299 km (0.082 R)
• M5: 2,895,916 km (0.051 R)
• M6: 4,091,502 km (0.078 R)
• M7: 4,556,003 km (0.064 R)
• M8: 5,055,660 km (0.087 R)
• M9: 5,567,734 km (0.111 R)
• M10: 6,217,288 km (0.051 R)
• M11: 6,614,619 km (0.048 R)
• M12: 9,029,129 km (0.044 R)
• M13: 9,505,449 km (0.117 R)
• M14: 9,891,262 km (0.099 R)
• M15: 11,620,015 km (0.104 R)
• M16: 13,896,894 km (0.037 R)
• M17: 16,658,022 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 738.9

Radius: 14.3

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 4.1 AU - 6.7 AU

Year: 7979 Days

Day: 14.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 47,138,231 km

• M1: 178,021 km (0.049 R)
• M2: 626,217 km (0.034 R)
• M3: 1,102,237 km (0.062 R)
• M4: 1,907,074 km (0.105 R)
• M5: 2,675,708 km (0.114 R)
• M6: 4,466,693 km (0.116 R)
• M7: 7,032,147 km (0.057 R)
• M8: 11,372,729 km (0.101 R)
• M9: 11,849,348 km (0.087 R)
• M10: 12,561,434 km (0.062 R)
• M11: 13,128,560 km (0.059 R)
• M12: 13,712,739 km (0.103 R)
• M13: 14,192,500 km (0.106 R)
• M14: 14,870,627 km (0.116 R)
• M15: 16,425,098 km (0.102 R)
• M16: 17,730,639 km (0.084 R)
• M17: 18,809,389 km (0.087 R)
• M18: 20,007,818 km (0.098 R)
• M19: 21,657,284 km (0.09 R)
• M20: 23,909,330 km (0.099 R)
• M21: 25,136,481 km (0.109 R)
• M22: 29,664,360 km (0.104 R)
• M23: 33,397,874 km (0.101 R)
• M24: 36,167,978 km (0.066 R)
• M25: 37,667,248 km (0.109 R)
• M26: 38,491,682 km (0.112 R)
• M27: 39,087,829 km (0.062 R)
• M28: 40,789,954 km (0.042 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 728.4

Radius: 10.2

Gravity: 7 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 4.57 AU - 7.23 AU

Year: 9112 Days

Day: 8.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,138,231 km

• M1: 126,859 km (0.068 R)
• M2: 461,659 km (0.079 R)
• M3: 809,474 km (0.092 R)
• M4: 2,846,997 km (0.111 R)
• M5: 3,357,275 km (0.036 R)
• M6: 4,678,225 km (0.101 R)
• M7: 5,621,589 km (0.044 R)
• M8: 7,839,826 km (0.11 R)
• M9: 8,935,930 km (0.08 R)
• M10: 9,592,814 km (0.116 R)
• M11: 11,923,848 km (0.038 R)
• M12: 13,250,631 km (0.079 R)
• M13: 18,558,813 km (0.069 R)
• M14: 21,804,488 km (0.086 R)
• M15: 22,650,165 km (0.082 R)
• M16: 23,081,007 km (0.114 R)
• M17: 24,227,076 km (0.086 R)
• M18: 32,128,536 km (0.062 R)
• M19: 33,333,846 km (0.079 R)
• M20: 36,656,116 km (0.106 R)
• M21: 45,708,732 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 216.7

Radius: 7.1

Gravity: 4.3 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 7.26 AU - 10.86 AU

Year: 17339 Days

Day: 20.3 Hours

Environment

Temp: -221 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,138,231 km

• M1: 88,861 km (0.077 R)
• M2: 400,922 km (0.059 R)
• M3: 805,884 km (0.07 R)
• M4: 1,587,084 km (0.026 R)
• M5: 2,376,213 km (0.085 R)
• M6: 3,674,722 km (0.106 R)
• M7: 4,014,758 km (0.055 R)
• M8: 4,697,822 km (0.109 R)
• M9: 5,623,683 km (0.115 R)
• M10: 6,974,702 km (0.11 R)
• M11: 7,212,562 km (0.092 R)
• M12: 8,088,308 km (0.081 R)
• M13: 8,351,002 km (0.096 R)
• M14: 11,741,338 km (0.077 R)
• M15: 12,949,790 km (0.089 R)
• M16: 16,856,987 km (0.098 R)
• M17: 20,742,044 km (0.107 R)
• M18: 26,125,174 km (0.1 R)
• M19: 30,964,066 km (0.119 R)
• M20: 32,260,930 km (0.074 R)
• M21: 44,507,012 km (0.089 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 468 - 12,131 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit