🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.17

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.53 AU - 0.77 AU

Year: 190 Days

Day: 29.9 Hours

Environment

Temp: 141 °C

Axial Tilt: 31.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.53

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 1.41 AU - 1.49 AU

Year: 635 Days

Day: 30.4 Hours

Environment

Temp: -39 °C

Axial Tilt: 10 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.39

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 2.62 AU - 2.7 AU

Year: 1577 Days

Day: 41.7 Hours

Environment

Temp: -83 °C

Axial Tilt: 2.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 2.24 AU - 3.14 AU

Year: 1603 Days

Day: 32.9 Hours

Environment

Temp: -88 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.43

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 2.21 AU - 3.31 AU

Year: 1666 Days

Day: 26.8 Hours

Environment

Temp: -88 °C

Axial Tilt: 49.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.75

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 2.69 AU - 2.95 AU

Year: 1721 Days

Day: 46 Hours

Environment

Temp: -86 °C

Axial Tilt: 29.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.87 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.45

Radius: 0.73

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 3.96 AU - 5.78 AU

Year: 3906 Days

Day: 21.2 Hours

Environment

Temp: -131 °C

Axial Tilt: 9.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 5.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 65.2

Radius: 10.1

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 4.27 AU - 5.75 AU

Year: 4076 Days

Day: 14.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 39,500,842 km

• M1: 125,662 km (0.094 R)
• M2: 699,819 km (0.085 R)
• M3: 2,127,880 km (0.117 R)
• M4: 2,658,653 km (0.04 R)
• M5: 3,004,224 km (0.109 R)
• M6: 3,935,322 km (0.044 R)
• M7: 5,950,555 km (0.108 R)
• M8: 9,794,173 km (0.095 R)

Planet 9 - Gas Giant

Semi-Major Axis: 6.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.3

Radius: 9

Gravity: 7.23 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 5.21 AU - 8.11 AU

Year: 6247 Days

Day: 9.2 Hours

Environment

Temp: -144 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 39,500,842 km

• M1: 114,592 km (0.111 R)
• M2: 587,172 km (0.073 R)
• M3: 1,006,345 km (0.091 R)
• M4: 1,532,181 km (0.091 R)
• M5: 1,830,928 km (0.088 R)
• M6: 2,296,178 km (0.116 R)
• M7: 2,601,357 km (0.111 R)
• M8: 3,867,703 km (0.111 R)
• M9: 4,327,567 km (0.101 R)
• M10: 4,932,691 km (0.049 R)
• M11: 6,086,389 km (0.116 R)
• M12: 7,160,203 km (0.103 R)
• M13: 7,968,480 km (0.09 R)
• M14: 8,553,557 km (0.1 R)
• M15: 9,722,066 km (0.059 R)
• M16: 10,899,551 km (0.072 R)
• M17: 11,232,107 km (0.099 R)
• M18: 12,579,087 km (0.056 R)
• M19: 13,698,976 km (0.11 R)
• M20: 14,825,897 km (0.11 R)
• M21: 16,135,776 km (0.044 R)
• M22: 17,391,949 km (0.046 R)
• M23: 17,781,353 km (0.092 R)
• M24: 18,510,044 km (0.065 R)
• M25: 23,150,719 km (0.104 R)
• M26: 26,670,608 km (0.102 R)
• M27: 28,512,606 km (0.051 R)
• M28: 32,448,526 km (0.07 R)

Planet 10 - Gas Giant

Semi-Major Axis: 8.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457.9

Radius: 8.3

Gravity: 6.65 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 8.2 AU - 8.98 AU

Year: 9150 Days

Day: 13.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 39,500,842 km

• M1: 105,167 km (0.111 R)
• M2: 395,387 km (0.104 R)
• M3: 870,061 km (0.057 R)
• M4: 1,455,737 km (0.096 R)
• M5: 2,147,777 km (0.091 R)
• M6: 2,662,693 km (0.075 R)
• M7: 3,913,032 km (0.109 R)
• M8: 4,460,261 km (0.076 R)
• M9: 4,881,678 km (0.072 R)
• M10: 5,237,721 km (0.102 R)
• M11: 5,642,832 km (0.109 R)
• M12: 6,874,920 km (0.115 R)
• M13: 7,399,410 km (0.096 R)
• M14: 9,001,753 km (0.061 R)
• M15: 10,872,923 km (0.047 R)
• M16: 12,545,876 km (0.107 R)
• M17: 14,686,173 km (0.112 R)
• M18: 15,054,782 km (0.108 R)
• M19: 17,810,674 km (0.075 R)
• M20: 19,380,703 km (0.114 R)
• M21: 19,824,411 km (0.037 R)
• M22: 21,825,881 km (0.115 R)
• M23: 24,901,014 km (0.09 R)
• M24: 25,779,154 km (0.053 R)
• M25: 26,951,552 km (0.097 R)
• M26: 33,562,731 km (0.1 R)
• M27: 36,060,417 km (0.118 R)
• M28: 38,912,800 km (0.065 R)

Kuiper Belt

Range: 30.2 - 54.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 407 - 15,402 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit