🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.38

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.51 AU - 0.79 AU

Year: 344 Days

Day: 40.8 Hours

Environment

Temp: -143 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867.6

Radius: 12.2

Gravity: 5.83 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.89 AU - 1.39 AU

Year: 798 Days

Day: 14.1 Hours

Environment

Temp: -167 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 65,125,360 km

• M1: 151,692 km (0.093 R)
• M2: 597,045 km (0.088 R)
• M3: 1,172,548 km (0.088 R)
• M4: 1,717,832 km (0.081 R)
• M5: 2,135,360 km (0.074 R)
• M6: 2,632,923 km (0.103 R)
• M7: 3,684,446 km (0.111 R)
• M8: 4,506,486 km (0.054 R)
• M9: 5,107,571 km (0.081 R)
• M10: 5,882,637 km (0.098 R)
• M11: 7,521,931 km (0.081 R)
• M12: 8,113,889 km (0.042 R)
• M13: 8,897,333 km (0.041 R)
• M14: 9,419,280 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 990.3

Radius: 8

Gravity: 15.47 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.17 AU - 1.81 AU

Year: 1193 Days

Day: 7.9 Hours

Environment

Temp: -181 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,125,360 km

• M1: 99,483 km (0.077 R)
• M2: 361,877 km (0.038 R)
• M3: 611,855 km (0.072 R)
• M4: 927,507 km (0.117 R)
• M5: 1,287,439 km (0.088 R)
• M6: 1,699,881 km (0.062 R)
• M7: 2,244,866 km (0.098 R)
• M8: 3,221,441 km (0.039 R)
• M9: 3,762,835 km (0.106 R)
• M10: 4,904,566 km (0.036 R)
• M11: 5,709,852 km (0.118 R)
• M12: 6,551,190 km (0.095 R)
• M13: 7,104,702 km (0.101 R)
• M14: 7,743,635 km (0.029 R)
• M15: 8,802,788 km (0.092 R)
• M16: 9,104,975 km (0.059 R)
• M17: 9,634,552 km (0.11 R)
• M18: 10,184,473 km (0.105 R)
• M19: 11,170,772 km (0.042 R)
• M20: 12,825,325 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.6

Radius: 11.7

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 2.29 AU - 2.29 AU

Year: 2273 Days

Day: 13.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 65,125,360 km

• M1: 145,559 km (0.081 R)
• M2: 529,576 km (0.026 R)
• M3: 1,011,730 km (0.063 R)
• M4: 1,865,785 km (0.095 R)
• M5: 2,846,099 km (0.075 R)
• M6: 3,407,839 km (0.101 R)
• M7: 3,828,808 km (0.084 R)
• M8: 4,666,556 km (0.11 R)
• M9: 5,048,031 km (0.1 R)
• M10: 8,399,920 km (0.091 R)
• M11: 9,001,154 km (0.102 R)
• M12: 11,018,033 km (0.085 R)
• M13: 12,491,273 km (0.108 R)
• M14: 13,275,315 km (0.12 R)
• M15: 16,178,262 km (0.117 R)
• M16: 18,186,763 km (0.072 R)
• M17: 18,798,020 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 719.6

Radius: 12.9

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 2.8 AU - 3.32 AU

Year: 3511 Days

Day: 6.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 161.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 65,125,360 km

• M1: 160,369 km (0.099 R)
• M2: 666,907 km (0.026 R)
• M3: 1,184,516 km (0.109 R)
• M4: 1,589,627 km (0.101 R)
• M5: 2,036,177 km (0.081 R)
• M6: 2,459,838 km (0.112 R)
• M7: 2,994,800 km (0.102 R)
• M8: 4,301,388 km (0.051 R)
• M9: 4,788,628 km (0.092 R)
• M10: 5,548,585 km (0.062 R)
• M11: 6,213,398 km (0.058 R)
• M12: 6,715,897 km (0.097 R)
• M13: 8,566,572 km (0.066 R)
• M14: 10,202,874 km (0.107 R)
• M15: 11,462,039 km (0.077 R)
• M16: 11,904,101 km (0.111 R)
• M17: 12,964,151 km (0.026 R)
• M18: 14,287,644 km (0.042 R)
• M19: 15,591,688 km (0.088 R)
• M20: 16,634,685 km (0.087 R)
• M21: 19,853,582 km (0.108 R)
• M22: 20,816,544 km (0.099 R)
• M23: 22,628,324 km (0.063 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 770.2

Radius: 14

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 2.64 AU - 3.98 AU

Year: 3950 Days

Day: 10.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 65,125,360 km

• M1: 174,132 km (0.111 R)
• M2: 753,076 km (0.114 R)
• M3: 1,194,539 km (0.119 R)
• M4: 2,702,037 km (0.09 R)
• M5: 3,253,454 km (0.077 R)
• M6: 4,609,858 km (0.056 R)
• M7: 5,403,026 km (0.093 R)
• M8: 7,873,934 km (0.1 R)
• M9: 9,676,140 km (0.086 R)
• M10: 10,292,034 km (0.041 R)
• M11: 10,977,791 km (0.109 R)
• M12: 13,469,343 km (0.08 R)
• M13: 14,928,072 km (0.054 R)
• M14: 15,640,009 km (0.069 R)
• M15: 20,199,004 km (0.118 R)
• M16: 23,836,027 km (0.079 R)
• M17: 25,808,924 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.4

Radius: 13.2

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 3.06 AU - 4 AU

Year: 4351 Days

Day: 8.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 65,125,360 km

• M1: 165,455 km (0.066 R)
• M2: 1,036,564 km (0.076 R)
• M3: 1,472,791 km (0.093 R)
• M4: 2,297,674 km (0.099 R)
• M5: 4,125,760 km (0.091 R)
• M6: 5,823,097 km (0.086 R)
• M7: 8,926,655 km (0.098 R)
• M8: 9,900,836 km (0.099 R)
• M9: 11,586,804 km (0.094 R)
• M10: 13,717,377 km (0.066 R)
• M11: 14,464,169 km (0.098 R)
• M12: 15,692,517 km (0.092 R)
• M13: 16,450,380 km (0.029 R)
• M14: 17,416,334 km (0.098 R)
• M15: 19,594,479 km (0.097 R)
• M16: 20,336,634 km (0.085 R)
• M17: 21,027,327 km (0.041 R)
• M18: 22,092,763 km (0.09 R)
• M19: 24,177,559 km (0.117 R)
• M20: 25,664,861 km (0.085 R)
• M21: 27,713,903 km (0.103 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 969.4

Radius: 4.2

Gravity: 54.95 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 5.72 AU - 9.16 AU

Year: 13313 Days

Day: 15.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 65,125,360 km

• M1: 52,808 km (0.119 R)
• M2: 534,812 km (0.063 R)
• M3: 672,293 km (0.111 R)
• M4: 854,353 km (0.069 R)
• M5: 1,333,067 km (0.032 R)
• M6: 1,465,461 km (0.042 R)
• M7: 1,606,681 km (0.039 R)
• M8: 2,028,547 km (0.077 R)
• M9: 3,429,232 km (0.068 R)
• M10: 4,736,867 km (0.074 R)
• M11: 5,786,595 km (0.031 R)
• M12: 6,303,905 km (0.042 R)
• M13: 7,070,444 km (0.098 R)
• M14: 9,044,538 km (0.114 R)
• M15: 11,788,911 km (0.079 R)
• M16: 12,552,757 km (0.09 R)
• M17: 13,690,599 km (0.055 R)
• M18: 14,605,689 km (0.116 R)
• M19: 14,895,310 km (0.089 R)
• M20: 15,336,923 km (0.094 R)
• M21: 16,635,433 km (0.084 R)
• M22: 18,845,592 km (0.064 R)
• M23: 22,564,146 km (0.048 R)
• M24: 24,038,283 km (0.117 R)
• M25: 24,543,625 km (0.102 R)
• M26: 26,101,986 km (0.081 R)
• M27: 26,959,481 km (0.117 R)
• M28: 33,620,177 km (0.119 R)
• M29: 41,587,011 km (0.091 R)
• M30: 52,225,664 km (0.087 R)
• M31: 54,620,127 km (0.099 R)
• M32: 54,793,810 km (0.104 R)
• M33: 56,020,663 km (0.11 R)
• M34: 59,259,157 km (0.03 R)
• M35: 62,430,333 km (0.065 R)
• M36: 64,541,458 km (0.03 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 193 - 10,712 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit