🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.62 AU - 0.62 AU

Year: 171 Days

Day: 21.9 Hours

Environment

Temp: 175 °C

Axial Tilt: 35.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 72,387,366 km

• M1: 137,032 km (0.097 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.29 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.98 AU - 1.6 AU

Year: 513 Days

Day: 45.8 Hours

Environment

Temp: 8 °C

Axial Tilt: 4.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 72,387,366 km

• M1: 589,715 km (0.088 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 1.4 AU - 2.18 AU

Year: 838 Days

Day: 21.8 Hours

Environment

Temp: -48 °C

Axial Tilt: 123.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.93

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 2.49 AU - 3.71 AU

Year: 1909 Days

Day: 39.9 Hours

Environment

Temp: -100 °C

Axial Tilt: 11.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 3.3 AU - 4.34 AU

Year: 2612 Days

Day: 19.9 Hours

Environment

Temp: -110 °C

Axial Tilt: 39.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.73 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 4.33 AU - 5.13 AU

Year: 3599 Days

Day: 34.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 72,387,366 km

• M1: 133,890 km (0.099 R)
• M2: 1,097,450 km (0.068 R)

Planet 7 - Terrestrial

Semi-Major Axis: 4.89 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 4.33 AU - 5.45 AU

Year: 3783 Days

Day: 32.6 Hours

Environment

Temp: -120 °C

Axial Tilt: 132 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,387,366 km

• M1: 38,147 km (0.086 R)

Asteroid Belt

Center: 8.67 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 12.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 791.2

Radius: 13.4

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 10.04 AU - 14.84 AU

Year: 15350 Days

Day: 12.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 72,387,366 km

• M1: 181,013 km (0.11 R)
• M2: 684,859 km (0.036 R)
• M3: 1,663,678 km (0.056 R)
• M4: 2,213,600 km (0.06 R)
• M5: 3,493,409 km (0.077 R)
• M6: 4,312,159 km (0.116 R)
• M7: 4,801,194 km (0.055 R)
• M8: 6,009,646 km (0.092 R)
• M9: 6,706,772 km (0.062 R)
• M10: 7,275,842 km (0.105 R)
• M11: 8,214,269 km (0.114 R)
• M12: 8,969,888 km (0.09 R)
• M13: 10,217,983 km (0.051 R)
• M14: 13,394,545 km (0.098 R)
• M15: 15,318,822 km (0.078 R)
• M16: 17,098,289 km (0.042 R)
• M17: 19,709,669 km (0.111 R)
• M18: 21,249,480 km (0.088 R)
• M19: 22,673,502 km (0.075 R)
• M20: 23,162,089 km (0.083 R)
• M21: 26,998,825 km (0.111 R)
• M22: 29,239,951 km (0.089 R)
• M23: 30,052,866 km (0.084 R)
• M24: 32,830,450 km (0.083 R)
• M25: 37,650,942 km (0.1 R)
• M26: 38,891,108 km (0.087 R)
• M27: 40,016,234 km (0.115 R)
• M28: 41,162,901 km (0.053 R)
• M29: 44,734,550 km (0.063 R)
• M30: 48,993,901 km (0.104 R)
• M31: 55,789,983 km (0.088 R)
• M32: 59,043,288 km (0.076 R)
• M33: 63,188,944 km (0.1 R)
• M34: 64,352,516 km (0.108 R)
• M35: 64,939,538 km (0.091 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 625.8

Radius: 7.8

Gravity: 10.29 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 12.66 AU - 16.44 AU

Year: 19417 Days

Day: 16.3 Hours

Environment

Temp: -175 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 72,387,366 km

• M1: 97,089 km (0.095 R)
• M2: 452,234 km (0.071 R)
• M3: 1,805,945 km (0.119 R)
• M4: 2,250,550 km (0.073 R)
• M5: 2,647,882 km (0.089 R)
• M6: 3,386,148 km (0.107 R)
• M7: 3,788,566 km (0.099 R)
• M8: 4,352,251 km (0.092 R)
• M9: 4,828,421 km (0.053 R)
• M10: 5,079,297 km (0.06 R)
• M11: 6,596,967 km (0.109 R)
• M12: 7,087,648 km (0.088 R)
• M13: 7,942,749 km (0.05 R)
• M14: 8,242,543 km (0.088 R)
• M15: 9,573,965 km (0.042 R)
• M16: 10,677,698 km (0.031 R)
• M17: 13,066,327 km (0.07 R)
• M18: 13,768,539 km (0.105 R)
• M19: 14,421,684 km (0.101 R)
• M20: 15,019,477 km (0.067 R)
• M21: 17,830,869 km (0.116 R)
• M22: 21,936,733 km (0.118 R)
• M23: 22,230,992 km (0.079 R)
• M24: 23,741,930 km (0.056 R)
• M25: 24,365,005 km (0.114 R)
• M26: 30,472,637 km (0.059 R)
• M27: 32,461,242 km (0.119 R)
• M28: 35,334,419 km (0.109 R)
• M29: 38,943,467 km (0.034 R)
• M30: 41,133,580 km (0.082 R)
• M31: 42,638,535 km (0.048 R)
• M32: 56,572,380 km (0.091 R)
• M33: 63,655,988 km (0.071 R)

Kuiper Belt

Range: 31.4 - 55.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 523 - 14,100 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit