🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.85 AU - 1.16 AU

Year: 365 Days

Day: 12.6 Hours

Environment

Temp: 28 °C

Axial Tilt: 6.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.16 AU - 1.66 AU

Year: 612 Days

Day: 14.7 Hours

Environment

Temp: -24 °C

Axial Tilt: 24.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 85,183,353 km

• M1: 435,928 km (0.07 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.55

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 1.58 AU - 1.72 AU

Year: 774 Days

Day: 15.1 Hours

Environment

Temp: -47 °C

Axial Tilt: 13.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.76 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.77

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 3.4 AU - 4.12 AU

Year: 2663 Days

Day: 32.8 Hours

Environment

Temp: -113 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.96 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 8.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.6

Radius: 14.6

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 6.41 AU - 9.91 AU

Year: 8514 Days

Day: 6.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 85,183,353 km

• M1: 181,612 km (0.083 R)
• M2: 642,672 km (0.112 R)
• M3: 1,195,586 km (0.064 R)
• M4: 2,389,078 km (0.05 R)
• M5: 2,925,536 km (0.094 R)
• M6: 4,108,706 km (0.026 R)
• M7: 5,134,947 km (0.113 R)
• M8: 5,726,158 km (0.055 R)
• M9: 6,181,234 km (0.08 R)
• M10: 7,006,865 km (0.093 R)
• M11: 7,569,652 km (0.082 R)
• M12: 8,560,289 km (0.044 R)
• M13: 9,204,458 km (0.07 R)
• M14: 10,904,787 km (0.078 R)
• M15: 11,829,601 km (0.06 R)
• M16: 12,340,029 km (0.097 R)
• M17: 13,344,579 km (0.073 R)
• M18: 20,228,923 km (0.069 R)
• M19: 20,714,668 km (0.119 R)
• M20: 22,390,014 km (0.12 R)
• M21: 23,349,086 km (0.115 R)
• M22: 28,157,760 km (0.104 R)
• M23: 32,363,555 km (0.058 R)
• M24: 32,917,067 km (0.072 R)
• M25: 35,662,786 km (0.116 R)
• M26: 40,062,609 km (0.066 R)
• M27: 45,638,271 km (0.106 R)
• M28: 46,474,972 km (0.04 R)

Planet 6 - Ice Giant

Semi-Major Axis: 15.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 59.1

Radius: 5

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 12.94 AU - 17.4 AU

Year: 21581 Days

Day: 19 Hours

Environment

Temp: -182 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 85,183,353 km

• M1: 82,428 km (0.067 R)
• M2: 480,658 km (0.117 R)
• M3: 640,728 km (0.091 R)
• M4: 914,492 km (0.08 R)
• M5: 2,124,589 km (0.12 R)
• M6: 2,460,287 km (0.071 R)
• M7: 3,173,569 km (0.045 R)
• M8: 4,718,466 km (0.108 R)
• M9: 5,084,383 km (0.081 R)
• M10: 6,915,760 km (0.094 R)
• M11: 13,351,161 km (0.091 R)
• M12: 21,441,414 km (0.058 R)
• M13: 25,888,061 km (0.091 R)
• M14: 27,199,436 km (0.062 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 807.8

Radius: 5.5

Gravity: 26.7 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 12.09 AU - 18.47 AU

Year: 21816 Days

Day: 19.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 85,183,353 km

• M1: 102,923 km (0.103 R)
• M2: 292,015 km (0.103 R)
• M3: 479,162 km (0.1 R)
• M4: 689,796 km (0.094 R)
• M5: 1,857,856 km (0.065 R)
• M6: 3,812,352 km (0.064 R)
• M7: 4,039,591 km (0.064 R)
• M8: 4,775,762 km (0.061 R)
• M9: 5,117,294 km (0.068 R)
• M10: 5,977,632 km (0.099 R)
• M11: 6,419,544 km (0.104 R)
• M12: 7,928,388 km (0.106 R)
• M13: 8,961,810 km (0.117 R)
• M14: 9,718,775 km (0.088 R)
• M15: 9,959,927 km (0.082 R)
• M16: 10,517,478 km (0.053 R)
• M17: 11,967,381 km (0.113 R)
• M18: 16,165,247 km (0.106 R)
• M19: 17,997,372 km (0.106 R)
• M20: 19,963,537 km (0.07 R)
• M21: 20,649,592 km (0.075 R)
• M22: 22,801,707 km (0.066 R)
• M23: 23,443,034 km (0.108 R)
• M24: 25,212,028 km (0.114 R)
• M25: 25,439,268 km (0.06 R)
• M26: 28,889,144 km (0.067 R)
• M27: 32,102,805 km (0.09 R)
• M28: 34,559,053 km (0.108 R)
• M29: 38,174,085 km (0.076 R)
• M30: 42,352,952 km (0.091 R)
• M31: 42,835,256 km (0.104 R)
• M32: 44,967,774 km (0.046 R)
• M33: 59,266,338 km (0.094 R)
• M34: 65,271,645 km (0.099 R)
• M35: 74,202,189 km (0.087 R)
• M36: 79,201,002 km (0.106 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: 215 - 14,887 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit