🌌 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: 0.23

Radius: 0.56

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.54 AU - 0.64 AU

Year: 171 Days

Day: 13.7 Hours

Environment

Temp: 197 °C

Axial Tilt: 38.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.71

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.63 AU - 0.87 AU

Year: 245 Days

Day: 19.9 Hours

Environment

Temp: 91 °C

Axial Tilt: 10.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.95 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.95

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.77 AU - 1.13 AU

Year: 349 Days

Day: 24.9 Hours

Environment

Temp: 16 °C

Axial Tilt: 10.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.96

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 1.45 AU - 1.75 AU

Year: 762 Days

Day: 26.5 Hours

Environment

Temp: -50 °C

Axial Tilt: 29.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.17

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.63 AU - 2.69 AU

Year: 1634 Days

Day: 41.7 Hours

Environment

Temp: -104 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 106,357,572 km

• M1: 41,289 km (0.064 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.82

Radius: 1.51

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 2.72 AU - 3.18 AU

Year: 1909 Days

Day: 26 Hours

Environment

Temp: -101 °C

Axial Tilt: 47.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.63

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 2.5 AU - 4.06 AU

Year: 2238 Days

Day: 32 Hours

Environment

Temp: -113 °C

Axial Tilt: 46.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 106,357,572 km

• M1: 1,843,046 km (0.053 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.1

Radius: 13.5

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 3.98 AU - 5.72 AU

Year: 4024 Days

Day: 13.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 106,357,572 km

• M1: 167,998 km (0.094 R)
• M2: 920,775 km (0.092 R)
• M3: 1,724,564 km (0.076 R)
• M4: 3,242,683 km (0.12 R)
• M5: 5,068,077 km (0.116 R)
• M6: 6,239,578 km (0.094 R)
• M7: 12,621,572 km (0.061 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.5

Radius: 14.9

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 6.95 AU - 9.89 AU

Year: 9204 Days

Day: 6.6 Hours

Environment

Temp: -162 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 106,357,572 km

• M1: 185,352 km (0.076 R)
• M2: 671,844 km (0.07 R)
• M3: 1,598,004 km (0.114 R)
• M4: 2,642,048 km (0.055 R)
• M5: 3,123,903 km (0.116 R)
• M6: 3,971,524 km (0.082 R)
• M7: 5,155,143 km (0.112 R)
• M8: 5,950,704 km (0.025 R)
• M9: 7,376,821 km (0.119 R)
• M10: 9,253,975 km (0.071 R)
• M11: 10,028,144 km (0.102 R)
• M12: 11,269,956 km (0.078 R)
• M13: 14,436,943 km (0.094 R)
• M14: 15,479,340 km (0.109 R)
• M15: 17,207,944 km (0.117 R)
• M16: 18,007,993 km (0.087 R)
• M17: 18,909,021 km (0.098 R)
• M18: 20,316,588 km (0.093 R)
• M19: 24,140,459 km (0.079 R)
• M20: 31,647,130 km (0.056 R)
• M21: 36,994,057 km (0.094 R)
• M22: 40,070,238 km (0.101 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 842.3

Radius: 5.2

Gravity: 31.15 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 15.44 AU - 21.42 AU

Year: 29807 Days

Day: 23.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 177.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 106,357,572 km

• M1: 64,776 km (0.095 R)
• M2: 369,058 km (0.053 R)
• M3: 716,125 km (0.068 R)
• M4: 993,928 km (0.109 R)
• M5: 1,212,042 km (0.1 R)
• M6: 6,321,408 km (0.12 R)
• M7: 8,109,701 km (0.107 R)
• M8: 14,414,802 km (0.07 R)
• M9: 19,134,316 km (0.095 R)
• M10: 21,127,109 km (0.1 R)
• M11: 23,024,010 km (0.118 R)
• M12: 27,928,726 km (0.113 R)
• M13: 32,754,753 km (0.063 R)
• M14: 34,831,171 km (0.094 R)
• M15: 35,287,295 km (0.102 R)
• M16: 36,836,531 km (0.117 R)
• M17: 37,468,731 km (0.079 R)
• M18: 41,584,618 km (0.084 R)
• M19: 43,137,144 km (0.109 R)
• M20: 46,909,105 km (0.048 R)
• M21: 49,351,141 km (0.102 R)
• M22: 55,307,081 km (0.109 R)
• M23: 55,513,376 km (0.112 R)
• M24: 61,724,530 km (0.12 R)
• M25: 63,969,246 km (0.102 R)
• M26: 66,267,668 km (0.074 R)
• M27: 82,294,985 km (0.072 R)
• M28: 84,737,320 km (0.075 R)
• M29: 90,623,249 km (0.065 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 158 - 15,662 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit