🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 18.3 Hours

Environment

Temp: -132 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.1

Radius: 11.4

Gravity: 3.32 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.05 AU - 1.29 AU

Year: 830 Days

Day: 12.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 66,873,742 km

• M1: 142,268 km (0.118 R)
• M2: 511,924 km (0.095 R)
• M3: 938,727 km (0.105 R)
• M4: 1,391,111 km (0.11 R)
• M5: 1,791,435 km (0.052 R)
• M6: 2,481,380 km (0.112 R)
• M7: 2,842,808 km (0.087 R)
• M8: 3,366,999 km (0.11 R)
• M9: 3,868,900 km (0.041 R)
• M10: 4,594,300 km (0.095 R)
• M11: 5,006,742 km (0.097 R)
• M12: 5,755,928 km (0.033 R)
• M13: 6,236,286 km (0.09 R)
• M14: 6,953,758 km (0.098 R)
• M15: 7,432,471 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.9

Radius: 14.5

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.93 AU - 2.33 AU

Year: 2039 Days

Day: 14.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 66,873,742 km

• M1: 180,265 km (0.033 R)
• M2: 736,321 km (0.088 R)
• M3: 1,364,033 km (0.106 R)
• M4: 1,992,644 km (0.087 R)
• M5: 2,617,364 km (0.108 R)
• M6: 3,095,928 km (0.087 R)
• M7: 4,504,990 km (0.079 R)
• M8: 6,440,188 km (0.054 R)
• M9: 7,107,096 km (0.077 R)
• M10: 9,678,833 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 339.6

Radius: 9

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 2.03 AU - 2.45 AU

Year: 2199 Days

Day: 6 Hours

Environment

Temp: -189 °C

Axial Tilt: 173.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,873,742 km

• M1: 112,198 km (0.112 R)
• M2: 403,316 km (0.076 R)
• M3: 829,221 km (0.1 R)
• M4: 1,618,799 km (0.114 R)
• M5: 2,130,124 km (0.095 R)
• M6: 2,899,207 km (0.103 R)
• M7: 3,589,302 km (0.118 R)
• M8: 4,694,680 km (0.036 R)
• M9: 5,622,786 km (0.087 R)
• M10: 6,593,227 km (0.1 R)
• M11: 7,026,911 km (0.091 R)
• M12: 8,561,486 km (0.113 R)
• M13: 10,007,200 km (0.053 R)
• M14: 10,998,286 km (0.115 R)
• M15: 11,755,849 km (0.112 R)
• M16: 12,356,036 km (0.112 R)
• M17: 13,214,578 km (0.089 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 368

Radius: 5.3

Gravity: 13.1 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 5.94 AU - 6.3 AU

Year: 9932 Days

Day: 22.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 66,873,742 km

• M1: 65,973 km (0.095 R)
• M2: 371,003 km (0.057 R)
• M3: 1,070,223 km (0.073 R)
• M4: 1,334,862 km (0.062 R)
• M5: 1,827,787 km (0.062 R)
• M6: 3,187,781 km (0.111 R)
• M7: 3,786,173 km (0.076 R)
• M8: 5,765,951 km (0.113 R)
• M9: 6,866,393 km (0.109 R)
• M10: 7,582,218 km (0.102 R)
• M11: 9,980,871 km (0.066 R)
• M12: 11,097,768 km (0.045 R)
• M13: 13,866,975 km (0.111 R)
• M14: 15,378,960 km (0.087 R)
• M15: 20,116,126 km (0.07 R)
• M16: 21,416,730 km (0.107 R)
• M17: 28,959,006 km (0.113 R)
• M18: 30,713,490 km (0.083 R)
• M19: 34,432,942 km (0.113 R)
• M20: 34,972,093 km (0.099 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 551.5

Radius: 3.6

Gravity: 42.55 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 7.68 AU - 10.76 AU

Year: 18366 Days

Day: 17.2 Hours

Environment

Temp: -237 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 66,873,742 km

• M1: 45,328 km (0.104 R)
• M2: 461,061 km (0.059 R)
• M3: 718,219 km (0.081 R)
• M4: 1,274,424 km (0.043 R)
• M5: 1,959,583 km (0.069 R)
• M6: 3,348,150 km (0.073 R)
• M7: 4,418,822 km (0.09 R)
• M8: 4,550,318 km (0.115 R)
• M9: 6,381,396 km (0.109 R)
• M10: 6,894,966 km (0.092 R)
• M11: 7,955,316 km (0.05 R)
• M12: 8,101,323 km (0.112 R)
• M13: 8,298,493 km (0.101 R)
• M14: 13,980,519 km (0.081 R)
• M15: 14,479,877 km (0.104 R)
• M16: 16,834,847 km (0.099 R)
• M17: 17,481,558 km (0.08 R)
• M18: 18,996,985 km (0.056 R)
• M19: 19,257,883 km (0.089 R)
• M20: 21,150,745 km (0.056 R)
• M21: 22,190,151 km (0.096 R)
• M22: 22,479,474 km (0.099 R)
• M23: 26,256,670 km (0.063 R)
• M24: 27,125,535 km (0.106 R)
• M25: 37,843,923 km (0.112 R)
• M26: 40,366,143 km (0.112 R)
• M27: 42,403,666 km (0.101 R)
• M28: 43,147,616 km (0.111 R)
• M29: 46,367,561 km (0.097 R)
• M30: 50,239,303 km (0.032 R)
• M31: 50,571,411 km (0.036 R)
• M32: 51,914,201 km (0.111 R)
• M33: 63,911,352 km (0.072 R)
• M34: 64,888,824 km (0.109 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: 541 - 14,662 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit