🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.41 AU - 0.61 AU

Year: 135 Days

Day: 15.5 Hours

Environment

Temp: 214 °C

Axial Tilt: 29.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.5

Radius: 0.76

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 1.24 AU - 1.46 AU

Year: 582 Days

Day: 21.3 Hours

Environment

Temp: -34 °C

Axial Tilt: 20.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.51

Radius: 1.45

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 1.36 AU - 1.6 AU

Year: 668 Days

Day: 28.1 Hours

Environment

Temp: -44 °C

Axial Tilt: 82.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 83,168,040 km

• M1: 38,746 km (0.057 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 1.58 AU - 1.64 AU

Year: 758 Days

Day: 39.2 Hours

Environment

Temp: -52 °C

Axial Tilt: 6.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.77

Radius: 1.26

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 2.84 AU - 3.56 AU

Year: 2123 Days

Day: 15 Hours

Environment

Temp: -108 °C

Axial Tilt: 4.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.51 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331.7

Radius: 10.8

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 4.86 AU - 6.78 AU

Year: 5207 Days

Day: 14.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 83,168,040 km

• M1: 138,378 km (0.094 R)
• M2: 605,871 km (0.112 R)
• M3: 1,181,973 km (0.102 R)
• M4: 1,527,693 km (0.095 R)
• M5: 1,878,500 km (0.069 R)
• M6: 2,585,949 km (0.098 R)
• M7: 3,235,952 km (0.088 R)
• M8: 3,802,778 km (0.098 R)
• M9: 4,366,313 km (0.04 R)
• M10: 4,812,713 km (0.091 R)
• M11: 5,687,711 km (0.092 R)
• M12: 6,696,150 km (0.114 R)
• M13: 8,232,520 km (0.064 R)
• M14: 8,587,666 km (0.118 R)
• M15: 9,252,778 km (0.116 R)
• M16: 9,951,849 km (0.098 R)
• M17: 10,644,188 km (0.066 R)
• M18: 11,238,091 km (0.076 R)
• M19: 13,937,286 km (0.074 R)
• M20: 14,442,926 km (0.114 R)
• M21: 15,544,416 km (0.096 R)
• M22: 16,309,309 km (0.118 R)
• M23: 16,984,744 km (0.095 R)
• M24: 18,032,827 km (0.069 R)
• M25: 23,856,672 km (0.026 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 73.1

Radius: 8.3

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 9.46 AU - 13 AU

Year: 13956 Days

Day: 7.1 Hours

Environment

Temp: -184 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 83,168,040 km

• M1: 105,018 km (0.043 R)
• M2: 534,812 km (0.117 R)
• M3: 807,529 km (0.111 R)
• M4: 1,513,182 km (0.053 R)
• M5: 2,038,869 km (0.088 R)
• M6: 2,821,117 km (0.092 R)
• M7: 3,310,750 km (0.069 R)
• M8: 4,338,937 km (0.055 R)
• M9: 5,883,983 km (0.108 R)
• M10: 6,878,360 km (0.089 R)
• M11: 8,016,800 km (0.118 R)
• M12: 10,228,754 km (0.1 R)
• M13: 12,719,260 km (0.101 R)
• M14: 16,692,130 km (0.03 R)
• M15: 17,847,774 km (0.073 R)
• M16: 20,589,903 km (0.088 R)
• M17: 21,142,368 km (0.088 R)
• M18: 21,492,576 km (0.11 R)
• M19: 22,276,769 km (0.063 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 590.9

Radius: 3.3

Gravity: 54.26 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 13.47 AU - 19.31 AU

Year: 24608 Days

Day: 24.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 83,168,040 km

• M1: 129,253 km (0.115 R)
• M2: 245,490 km (0.107 R)
• M3: 428,149 km (0.103 R)
• M4: 2,399,550 km (0.075 R)
• M5: 5,125,373 km (0.029 R)
• M6: 8,399,023 km (0.097 R)
• M7: 9,642,331 km (0.096 R)
• M8: 11,132,924 km (0.099 R)
• M9: 12,346,761 km (0.081 R)
• M10: 15,033,988 km (0.095 R)
• M11: 15,274,092 km (0.116 R)
• M12: 15,516,740 km (0.092 R)
• M13: 16,092,841 km (0.083 R)
• M14: 21,628,561 km (0.117 R)
• M15: 32,113,726 km (0.092 R)
• M16: 32,645,397 km (0.106 R)
• M17: 38,735,377 km (0.043 R)
• M18: 49,840,475 km (0.11 R)
• M19: 50,374,091 km (0.055 R)
• M20: 53,284,218 km (0.034 R)
• M21: 61,248,659 km (0.066 R)
• M22: 62,889,898 km (0.062 R)
• M23: 63,930,351 km (0.114 R)
• M24: 71,087,263 km (0.12 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 479 - 11,492 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit