🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.51

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.68 AU - 0.78 AU

Year: 234 Days

Day: 45.9 Hours

Environment

Temp: 105 °C

Axial Tilt: 27.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 22,259,328 km

• M1: 50,265 km (0.077 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.88 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.39

Radius: 1.14

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.76 AU - 1 AU

Year: 309 Days

Day: 22.9 Hours

Environment

Temp: 47 °C

Axial Tilt: 13 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.46

Radius: 0.73

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.09 AU - 1.65 AU

Year: 601 Days

Day: 24.3 Hours

Environment

Temp: -36 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.41 AU - 1.65 AU

Year: 709 Days

Day: 33.6 Hours

Environment

Temp: -52 °C

Axial Tilt: 10.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 22,259,328 km

• M1: 104,120 km (0.081 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.16

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 2.6 AU - 2.8 AU

Year: 1663 Days

Day: 34.6 Hours

Environment

Temp: -106 °C

Axial Tilt: 28 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.59

Radius: 1.46

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 2.67 AU - 3.49 AU

Year: 2026 Days

Day: 43.3 Hours

Environment

Temp: -110 °C

Axial Tilt: 43.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 22,259,328 km

• M1: 801,845 km (0.041 R)

Planet 7 - Terrestrial

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.32

Radius: 0.63

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 3.93 AU - 4.73 AU

Year: 3376 Days

Day: 15.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 39.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.81 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 799.3

Radius: 9.6

Gravity: 8.67 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 6.38 AU - 8.18 AU

Year: 7361 Days

Day: 5.9 Hours

Environment

Temp: -161 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 22,259,328 km

• M1: 120,277 km (0.116 R)
• M2: 452,534 km (0.057 R)
• M3: 775,815 km (0.099 R)
• M4: 1,488,948 km (0.038 R)
• M5: 2,130,573 km (0.109 R)
• M6: 5,496,974 km (0.117 R)
• M7: 6,542,663 km (0.092 R)
• M8: 7,056,382 km (0.101 R)
• M9: 9,848,327 km (0.068 R)
• M10: 13,653,498 km (0.062 R)
• M11: 14,677,197 km (0.117 R)
• M12: 15,366,244 km (0.101 R)
• M13: 15,686,534 km (0.116 R)
• M14: 17,217,817 km (0.096 R)
• M15: 21,517,859 km (0.106 R)
• M16: 22,080,945 km (0.083 R)
• M17: 22,407,068 km (0.089 R)
• M18: 23,069,039 km (0.106 R)
• M19: 25,668,003 km (0.114 R)
• M20: 26,945,269 km (0.086 R)
• M21: 27,317,768 km (0.027 R)
• M22: 28,939,858 km (0.101 R)
• M23: 30,524,099 km (0.089 R)
• M24: 34,736,476 km (0.065 R)
• M25: 38,726,999 km (0.087 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.8

Radius: 13.4

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 9.49 AU - 9.75 AU

Year: 11181 Days

Day: 13.8 Hours

Environment

Temp: -169 °C

Axial Tilt: 46.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,259,328 km

• M1: 198,965 km (0.105 R)
• M2: 719,715 km (0.115 R)
• M3: 2,067,742 km (0.079 R)
• M4: 2,562,163 km (0.048 R)
• M5: 4,122,917 km (0.077 R)
• M6: 5,470,794 km (0.071 R)
• M7: 11,182,590 km (0.113 R)
• M8: 15,375,819 km (0.114 R)
• M9: 16,336,835 km (0.094 R)
• M10: 17,578,647 km (0.087 R)
• M11: 22,245,203 km (0.065 R)

Planet 10 - Gas Giant

Semi-Major Axis: 10.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.9

Radius: 14.8

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 9.39 AU - 11.83 AU

Year: 12951 Days

Day: 10.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 22,259,328 km

• M1: 350,209 km (0.097 R)
• M2: 1,463,516 km (0.114 R)
• M3: 1,976,188 km (0.106 R)
• M4: 2,926,882 km (0.098 R)
• M5: 4,186,796 km (0.091 R)
• M6: 9,497,071 km (0.036 R)
• M7: 16,116,478 km (0.093 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 426 - 17,052 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit