🌌 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: 0.76

Radius: 0.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.68 AU - 0.78 AU

Year: 231 Days

Day: 13.1 Hours

Environment

Temp: 158 °C

Axial Tilt: 39.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 40,403,283 km

• M1: 30,518 km (0.082 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.52

Radius: 0.77

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 1.23 AU - 1.23 AU

Year: 506 Days

Day: 19 Hours

Environment

Temp: -10 °C

Axial Tilt: 42.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 40,403,283 km

• M1: 20,645 km (0.036 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.65

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 1.22 AU - 1.7 AU

Year: 654 Days

Day: 31.3 Hours

Environment

Temp: -42 °C

Axial Tilt: 5.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.94

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.48 AU - 1.72 AU

Year: 751 Days

Day: 12.1 Hours

Environment

Temp: -41 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.3

Radius: 1.4

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.24 AU - 1.96 AU

Year: 751 Days

Day: 14.2 Hours

Environment

Temp: -43 °C

Axial Tilt: 31.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 1.77 AU - 1.91 AU

Year: 926 Days

Day: 31.8 Hours

Environment

Temp: -65 °C

Axial Tilt: 23 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 7.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 78.2

Radius: 13.5

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 7.18 AU - 8.04 AU

Year: 7785 Days

Day: 11.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,403,283 km

• M1: 252,372 km (0.09 R)
• M2: 710,590 km (0.107 R)
• M3: 1,841,251 km (0.118 R)
• M4: 2,477,341 km (0.069 R)
• M5: 3,781,086 km (0.064 R)
• M6: 5,802,602 km (0.112 R)
• M7: 6,466,518 km (0.091 R)
• M8: 7,450,273 km (0.051 R)
• M9: 8,203,050 km (0.113 R)
• M10: 15,659,756 km (0.113 R)
• M11: 17,974,783 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.6

Radius: 14

Gravity: 2.4 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 6.99 AU - 10.19 AU

Year: 9337 Days

Day: 13.6 Hours

Environment

Temp: -162 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 40,403,283 km

• M1: 174,282 km (0.061 R)
• M2: 787,782 km (0.098 R)
• M3: 1,338,153 km (0.069 R)
• M4: 2,312,633 km (0.049 R)
• M5: 2,826,801 km (0.055 R)
• M6: 4,567,821 km (0.109 R)
• M7: 5,293,820 km (0.097 R)
• M8: 5,863,339 km (0.098 R)
• M9: 7,314,887 km (0.081 R)
• M10: 7,982,842 km (0.096 R)
• M11: 8,562,982 km (0.081 R)
• M12: 9,038,554 km (0.095 R)
• M13: 12,491,572 km (0.117 R)
• M14: 13,504,948 km (0.071 R)
• M15: 15,315,082 km (0.108 R)
• M16: 19,858,369 km (0.11 R)
• M17: 22,112,660 km (0.111 R)
• M18: 23,763,472 km (0.064 R)
• M19: 27,495,789 km (0.092 R)
• M20: 31,602,401 km (0.105 R)
• M21: 32,324,360 km (0.104 R)
• M22: 39,326,887 km (0.108 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 367 - 14,208 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit