🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.24

Radius: 0.57

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.54 AU - 0.64 AU

Year: 159 Days

Day: 47.8 Hours

Environment

Temp: 210 °C

Axial Tilt: 36.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 66,601,493 km

• M1: 13,314 km (0.075 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.28 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.2 AU - 1.36 AU

Year: 509 Days

Day: 45.6 Hours

Environment

Temp: 26 °C

Axial Tilt: 29.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.5 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.38

Radius: 1.41

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.44 AU - 1.56 AU

Year: 646 Days

Day: 23.3 Hours

Environment

Temp: -16 °C

Axial Tilt: 14.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 66,601,493 km

• M1: 91,404 km (0.113 R)
• M2: 375,939 km (0.11 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.76

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 2.76 AU - 4.22 AU

Year: 2291 Days

Day: 30 Hours

Environment

Temp: -95 °C

Axial Tilt: 9.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.21 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 6.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 746.8

Radius: 10.6

Gravity: 6.65 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 5.42 AU - 8.44 AU

Year: 6412 Days

Day: 6.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 66,601,493 km

• M1: 132,394 km (0.104 R)
• M2: 531,671 km (0.092 R)
• M3: 925,562 km (0.072 R)
• M4: 1,374,954 km (0.117 R)
• M5: 1,739,524 km (0.095 R)
• M6: 2,384,440 km (0.113 R)
• M7: 3,161,153 km (0.083 R)
• M8: 3,552,052 km (0.096 R)
• M9: 5,300,851 km (0.074 R)
• M10: 6,414,158 km (0.09 R)
• M11: 6,829,741 km (0.105 R)
• M12: 7,792,254 km (0.058 R)
• M13: 10,402,886 km (0.096 R)
• M14: 15,551,596 km (0.047 R)
• M15: 18,427,765 km (0.086 R)
• M16: 23,542,516 km (0.06 R)
• M17: 24,701,900 km (0.103 R)
• M18: 28,686,140 km (0.097 R)
• M19: 30,200,369 km (0.081 R)
• M20: 31,469,258 km (0.118 R)
• M21: 32,469,320 km (0.115 R)
• M22: 34,217,970 km (0.083 R)
• M23: 36,463,434 km (0.062 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280

Radius: 12.9

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 7.24 AU - 12.06 AU

Year: 10536 Days

Day: 8.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 66,601,493 km

• M1: 160,818 km (0.084 R)
• M2: 578,196 km (0.053 R)
• M3: 1,092,364 km (0.079 R)
• M4: 1,502,411 km (0.099 R)
• M5: 1,914,554 km (0.094 R)
• M6: 2,369,481 km (0.102 R)
• M7: 2,781,473 km (0.114 R)
• M8: 4,115,587 km (0.07 R)
• M9: 6,566,299 km (0.08 R)
• M10: 7,168,580 km (0.101 R)
• M11: 8,566,572 km (0.069 R)
• M12: 16,837,390 km (0.04 R)
• M13: 18,517,374 km (0.08 R)
• M14: 21,973,982 km (0.106 R)
• M15: 25,494,020 km (0.082 R)
• M16: 27,886,988 km (0.114 R)
• M17: 31,503,217 km (0.049 R)
• M18: 34,676,188 km (0.091 R)
• M19: 36,068,196 km (0.095 R)
• M20: 36,503,825 km (0.043 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 14

Radius: 13.5

Gravity: 0.08 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 9.79 AU - 12.21 AU

Year: 12822 Days

Day: 7.8 Hours

Environment

Temp: -181 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 66,601,493 km

• M1: 169,195 km (0.088 R)
• M2: 589,266 km (0.028 R)
• M3: 2,057,569 km (0.101 R)
• M4: 3,374,479 km (0.084 R)
• M5: 4,197,417 km (0.046 R)
• M6: 11,284,317 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 299.6

Radius: 7.6

Gravity: 5.19 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 11.97 AU - 14.43 AU

Year: 16855 Days

Day: 21.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,601,493 km

• M1: 95,294 km (0.105 R)
• M2: 612,902 km (0.056 R)
• M3: 1,641,837 km (0.11 R)
• M4: 2,494,395 km (0.056 R)
• M5: 3,007,067 km (0.106 R)
• M6: 3,411,280 km (0.117 R)
• M7: 3,932,629 km (0.102 R)
• M8: 7,120,410 km (0.082 R)
• M9: 14,882,595 km (0.113 R)
• M10: 15,289,501 km (0.053 R)
• M11: 18,504,509 km (0.1 R)
• M12: 22,143,776 km (0.083 R)
• M13: 29,933,038 km (0.062 R)
• M14: 37,843,025 km (0.057 R)
• M15: 40,409,975 km (0.085 R)
• M16: 42,139,476 km (0.062 R)
• M17: 44,335,124 km (0.115 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 374.3

Radius: 3.9

Gravity: 24.61 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 13.35 AU - 18.33 AU

Year: 22157 Days

Day: 16.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 66,601,493 km

• M1: 52,210 km (0.119 R)
• M2: 243,097 km (0.072 R)
• M3: 1,027,289 km (0.114 R)
• M4: 1,301,053 km (0.102 R)
• M5: 1,573,022 km (0.089 R)
• M6: 1,881,642 km (0.116 R)
• M7: 2,229,307 km (0.078 R)
• M8: 2,926,434 km (0.051 R)
• M9: 3,586,310 km (0.026 R)
• M10: 4,404,461 km (0.103 R)
• M11: 4,568,569 km (0.101 R)
• M12: 4,874,347 km (0.115 R)
• M13: 5,193,589 km (0.07 R)
• M14: 7,181,147 km (0.12 R)
• M15: 7,454,761 km (0.081 R)
• M16: 8,824,928 km (0.103 R)
• M17: 9,956,785 km (0.111 R)
• M18: 10,822,060 km (0.087 R)
• M19: 11,925,045 km (0.112 R)
• M20: 12,700,859 km (0.091 R)
• M21: 13,033,714 km (0.109 R)
• M22: 13,372,554 km (0.116 R)
• M23: 13,578,550 km (0.053 R)
• M24: 14,067,585 km (0.112 R)
• M25: 14,280,613 km (0.114 R)
• M26: 19,620,359 km (0.099 R)
• M27: 22,006,894 km (0.112 R)
• M28: 32,489,366 km (0.081 R)
• M29: 33,615,090 km (0.095 R)
• M30: 34,123,574 km (0.031 R)
• M31: 43,421,979 km (0.047 R)
• M32: 53,064,459 km (0.091 R)
• M33: 57,651,728 km (0.109 R)

Kuiper Belt

Range: 31.2 - 58.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 177 - 18,961 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit