🌌 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: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.1

Radius: 1.35

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.47 AU - 0.55 AU

Year: 166 Days

Day: 47.4 Hours

Environment

Temp: 0 °C

Axial Tilt: 32.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.91

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.47 AU - 0.67 AU

Year: 196 Days

Day: 42.4 Hours

Environment

Temp: -12 °C

Axial Tilt: 95.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.8

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.59 AU - 0.97 AU

Year: 315 Days

Day: 26.7 Hours

Environment

Temp: -44 °C

Axial Tilt: 24.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 34,496,331 km

• M1: 285,433 km (0.067 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.99 AU - 1.05 AU

Year: 470 Days

Day: 25.8 Hours

Environment

Temp: -77 °C

Axial Tilt: 23.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.18

Radius: 1.07

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.85 AU - 1.23 AU

Year: 484 Days

Day: 23.7 Hours

Environment

Temp: -77 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.4 AU - 1.92 AU

Year: 976 Days

Day: 37.4 Hours

Environment

Temp: -108 °C

Axial Tilt: 6.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 2.15 AU - 2.23 AU

Year: 1480 Days

Day: 30.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 78.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 34,496,331 km

• M1: 292,613 km (0.096 R)

Asteroid Belt

Center: 3.1 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645.9

Radius: 8.2

Gravity: 9.61 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 3.31 AU - 4.69 AU

Year: 3653 Days

Day: 13.7 Hours

Environment

Temp: -177 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 34,496,331 km

• M1: 110,254 km (0.063 R)
• M2: 400,623 km (0.062 R)
• M3: 667,356 km (0.116 R)
• M4: 1,498,821 km (0.115 R)
• M5: 2,281,218 km (0.065 R)
• M6: 3,293,098 km (0.06 R)
• M7: 3,930,834 km (0.074 R)
• M8: 4,768,133 km (0.058 R)
• M9: 5,216,179 km (0.119 R)
• M10: 5,801,555 km (0.064 R)
• M11: 6,110,325 km (0.098 R)
• M12: 8,130,345 km (0.034 R)
• M13: 9,520,558 km (0.047 R)
• M14: 10,435,199 km (0.069 R)
• M15: 11,759,141 km (0.112 R)
• M16: 15,633,875 km (0.094 R)
• M17: 15,958,951 km (0.103 R)
• M18: 17,362,329 km (0.091 R)
• M19: 19,338,218 km (0.103 R)
• M20: 20,476,807 km (0.054 R)
• M21: 22,267,793 km (0.11 R)
• M22: 22,748,750 km (0.111 R)

Planet 9 - Gas Giant

Semi-Major Axis: 7.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 340.8

Radius: 9.8

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 5.89 AU - 8.33 AU

Year: 8656 Days

Day: 10.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 34,496,331 km

• M1: 121,922 km (0.102 R)
• M2: 562,338 km (0.085 R)
• M3: 934,538 km (0.075 R)
• M4: 1,345,932 km (0.079 R)
• M5: 1,891,366 km (0.117 R)
• M6: 2,650,425 km (0.046 R)
• M7: 3,070,048 km (0.111 R)
• M8: 3,381,211 km (0.098 R)
• M9: 4,548,822 km (0.1 R)
• M10: 5,124,475 km (0.101 R)
• M11: 5,903,581 km (0.097 R)
• M12: 6,656,806 km (0.046 R)
• M13: 7,399,260 km (0.115 R)
• M14: 9,302,893 km (0.1 R)
• M15: 11,170,473 km (0.115 R)
• M16: 13,549,079 km (0.099 R)
• M17: 17,655,690 km (0.117 R)
• M18: 19,144,339 km (0.116 R)
• M19: 19,493,949 km (0.113 R)
• M20: 21,909,805 km (0.113 R)
• M21: 24,029,457 km (0.093 R)
• M22: 24,765,479 km (0.097 R)
• M23: 25,600,833 km (0.07 R)
• M24: 27,063,751 km (0.111 R)
• M25: 28,039,578 km (0.085 R)
• M26: 28,672,676 km (0.119 R)
• M27: 32,375,971 km (0.082 R)
• M28: 33,072,648 km (0.086 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 167 - 12,502 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit