🌌 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: 3.52

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.73 AU - 0.73 AU

Year: 233 Days

Day: 38.5 Hours

Environment

Temp: 144 °C

Axial Tilt: 26.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.15 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.7

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.12 AU - 1.18 AU

Year: 460 Days

Day: 18.5 Hours

Environment

Temp: 11 °C

Axial Tilt: 5.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 71,344,639 km

• M1: 134,189 km (0.048 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.95

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 2.29 AU - 2.43 AU

Year: 1352 Days

Day: 26.3 Hours

Environment

Temp: -85 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.26

Radius: 1.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 2.36 AU - 3.36 AU

Year: 1803 Days

Day: 27.2 Hours

Environment

Temp: -107 °C

Axial Tilt: 18.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 3.27 AU - 3.95 AU

Year: 2557 Days

Day: 31.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 11.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.7

Radius: 11.5

Gravity: 2.8 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 5.09 AU - 6.55 AU

Year: 5234 Days

Day: 12.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 71,344,639 km

• M1: 143,016 km (0.073 R)
• M2: 556,354 km (0.071 R)
• M3: 1,041,351 km (0.065 R)
• M4: 2,079,560 km (0.096 R)
• M5: 2,762,025 km (0.116 R)
• M6: 4,385,910 km (0.08 R)
• M7: 7,798,238 km (0.056 R)
• M8: 8,215,616 km (0.109 R)
• M9: 8,944,756 km (0.12 R)
• M10: 11,042,716 km (0.045 R)
• M11: 13,204,555 km (0.091 R)
• M12: 14,051,878 km (0.101 R)
• M13: 15,689,675 km (0.096 R)
• M14: 23,595,923 km (0.062 R)
• M15: 23,958,249 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 846.7

Radius: 10.1

Gravity: 8.3 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 7.18 AU - 9.5 AU

Year: 8978 Days

Day: 7 Hours

Environment

Temp: -166 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 71,344,639 km

• M1: 126,111 km (0.094 R)
• M2: 442,959 km (0.098 R)
• M3: 853,905 km (0.096 R)
• M4: 1,548,188 km (0.041 R)
• M5: 1,904,830 km (0.106 R)
• M6: 3,297,586 km (0.086 R)
• M7: 3,948,636 km (0.117 R)
• M8: 7,728,376 km (0.104 R)
• M9: 9,394,148 km (0.105 R)
• M10: 14,551,534 km (0.114 R)
• M11: 17,948,304 km (0.047 R)
• M12: 20,594,241 km (0.108 R)
• M13: 27,725,572 km (0.095 R)
• M14: 28,125,148 km (0.114 R)
• M15: 32,666,041 km (0.048 R)
• M16: 33,223,742 km (0.041 R)
• M17: 36,705,184 km (0.081 R)
• M18: 45,067,705 km (0.1 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 676.4

Radius: 12.3

Gravity: 4.47 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 9.03 AU - 11.99 AU

Year: 12702 Days

Day: 5.2 Hours

Environment

Temp: -171 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 71,344,639 km

• M1: 153,039 km (0.095 R)
• M2: 1,057,059 km (0.113 R)
• M3: 1,630,318 km (0.091 R)
• M4: 2,141,045 km (0.12 R)
• M5: 2,629,631 km (0.113 R)
• M6: 4,085,817 km (0.086 R)
• M7: 8,093,843 km (0.086 R)
• M8: 10,546,500 km (0.116 R)
• M9: 11,502,730 km (0.116 R)
• M10: 11,912,927 km (0.04 R)
• M11: 14,046,342 km (0.096 R)
• M12: 15,414,116 km (0.06 R)
• M13: 21,516,063 km (0.058 R)
• M14: 22,501,913 km (0.097 R)
• M15: 23,799,974 km (0.106 R)
• M16: 28,523,228 km (0.112 R)
• M17: 29,059,835 km (0.072 R)
• M18: 52,057,366 km (0.093 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 526.6

Radius: 7.3

Gravity: 9.88 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 14.39 AU - 14.73 AU

Year: 20711 Days

Day: 18.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 71,344,639 km

• M1: 92,751 km (0.088 R)
• M2: 366,515 km (0.085 R)
• M3: 1,051,374 km (0.06 R)
• M4: 1,846,636 km (0.108 R)
• M5: 3,908,693 km (0.057 R)
• M6: 4,448,891 km (0.098 R)
• M7: 4,824,232 km (0.057 R)
• M8: 5,183,566 km (0.095 R)
• M9: 7,872,738 km (0.081 R)
• M10: 10,879,954 km (0.118 R)
• M11: 15,251,952 km (0.093 R)
• M12: 15,481,584 km (0.051 R)
• M13: 17,992,585 km (0.082 R)
• M14: 19,658,806 km (0.107 R)
• M15: 21,617,341 km (0.079 R)
• M16: 22,004,650 km (0.078 R)
• M17: 24,321,921 km (0.075 R)
• M18: 52,730,557 km (0.091 R)
• M19: 59,084,427 km (0.109 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 253 - 18,413 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit