🌌 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: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.59 AU - 0.87 AU

Year: 240 Days

Day: 25.5 Hours

Environment

Temp: 160 °C

Axial Tilt: 16.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 46,901,995 km

• M1: 48,320 km (0.08 R)
• M2: 406,757 km (0.084 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.16

Radius: 0.48

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 0.79 AU - 0.81 AU

Year: 275 Days

Day: 17 Hours

Environment

Temp: 37 °C

Axial Tilt: 45.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 46,901,995 km

• M1: 11,669 km (0.04 R)
• M2: 153,936 km (0.047 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.17

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.84 AU - 0.84 AU

Year: 296 Days

Day: 14.1 Hours

Environment

Temp: 41 °C

Axial Tilt: 19.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 46,901,995 km

• M1: 104,569 km (0.03 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.19

Radius: 1.07

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.18 AU - 1.32 AU

Year: 538 Days

Day: 36.1 Hours

Environment

Temp: -31 °C

Axial Tilt: 28.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 46,901,995 km

• M1: 203,004 km (0.085 R)
• M2: 244,593 km (0.083 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.31

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.34 AU - 1.56 AU

Year: 672 Days

Day: 37.6 Hours

Environment

Temp: -52 °C

Axial Tilt: 50 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 3.59 AU - 3.73 AU

Year: 2696 Days

Day: 22 Hours

Environment

Temp: -123 °C

Axial Tilt: 38.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,901,995 km

• M1: 1,108,520 km (0.061 R)

Asteroid Belt

Center: 4.18 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 4.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642.8

Radius: 14

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 4.41 AU - 4.99 AU

Year: 3923 Days

Day: 7 Hours

Environment

Temp: -141 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 46,901,995 km

• M1: 174,282 km (0.099 R)
• M2: 687,851 km (0.089 R)
• M3: 1,300,903 km (0.077 R)
• M4: 2,215,694 km (0.109 R)
• M5: 3,184,789 km (0.074 R)
• M6: 4,306,474 km (0.037 R)
• M7: 7,001,031 km (0.105 R)
• M8: 7,685,441 km (0.101 R)
• M9: 8,131,093 km (0.084 R)
• M10: 9,809,731 km (0.039 R)
• M11: 12,025,574 km (0.111 R)
• M12: 12,817,546 km (0.081 R)
• M13: 13,843,488 km (0.114 R)
• M14: 14,350,924 km (0.113 R)
• M15: 15,029,200 km (0.096 R)
• M16: 16,281,634 km (0.112 R)
• M17: 18,078,454 km (0.087 R)
• M18: 18,931,760 km (0.027 R)
• M19: 19,621,107 km (0.101 R)
• M20: 20,719,155 km (0.065 R)
• M21: 23,607,591 km (0.087 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 62.2

Radius: 8.8

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 7.52 AU - 10.5 AU

Year: 10413 Days

Day: 12 Hours

Environment

Temp: -179 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 46,901,995 km

• M1: 109,655 km (0.08 R)
• M2: 542,891 km (0.086 R)
• M3: 1,270,834 km (0.089 R)
• M4: 1,824,047 km (0.031 R)
• M5: 2,352,427 km (0.107 R)
• M6: 4,362,124 km (0.059 R)
• M7: 5,828,782 km (0.089 R)
• M8: 13,303,140 km (0.102 R)
• M9: 14,762,467 km (0.063 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 357.4

Radius: 10.5

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 8.03 AU - 13.29 AU

Year: 13400 Days

Day: 11.1 Hours

Environment

Temp: -179 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 46,901,995 km

• M1: 130,599 km (0.109 R)
• M2: 482,752 km (0.116 R)
• M3: 1,041,052 km (0.051 R)
• M4: 1,497,175 km (0.101 R)
• M5: 2,349,285 km (0.117 R)
• M6: 3,214,709 km (0.11 R)
• M7: 4,007,129 km (0.106 R)
• M8: 4,924,762 km (0.096 R)
• M9: 6,012,189 km (0.034 R)
• M10: 8,083,222 km (0.119 R)
• M11: 9,834,414 km (0.098 R)
• M12: 10,799,171 km (0.092 R)
• M13: 11,385,744 km (0.074 R)
• M14: 11,714,560 km (0.1 R)
• M15: 14,072,073 km (0.078 R)
• M16: 17,660,777 km (0.039 R)
• M17: 18,176,291 km (0.099 R)
• M18: 19,783,421 km (0.096 R)
• M19: 20,500,443 km (0.113 R)
• M20: 20,987,983 km (0.064 R)
• M21: 21,650,103 km (0.048 R)
• M22: 31,036,023 km (0.096 R)
• M23: 32,112,829 km (0.111 R)
• M24: 34,683,518 km (0.108 R)
• M25: 35,843,051 km (0.112 R)
• M26: 36,908,338 km (0.087 R)
• M27: 37,872,945 km (0.091 R)
• M28: 46,203,901 km (0.078 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 392 - 15,886 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit