🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.38 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.56

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.64 AU - 0.86 AU

Year: 243 Days

Day: 12.9 Hours

Environment

Temp: 84 °C

Axial Tilt: 31.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.4 AU - 1.66 AU

Year: 709 Days

Day: 39.2 Hours

Environment

Temp: -46 °C

Axial Tilt: 11.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.36

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.3 AU - 1.88 AU

Year: 751 Days

Day: 18.5 Hours

Environment

Temp: -53 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.97

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.95 AU - 1.99 AU

Year: 1036 Days

Day: 28.9 Hours

Environment

Temp: -67 °C

Axial Tilt: 8.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.48

Radius: 1.17

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 2.35 AU - 2.97 AU

Year: 1626 Days

Day: 36.5 Hours

Environment

Temp: -107 °C

Axial Tilt: 38.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 2.96 AU - 3.98 AU

Year: 2422 Days

Day: 17 Hours

Environment

Temp: -110 °C

Axial Tilt: 4.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.73

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 3.34 AU - 3.64 AU

Year: 2443 Days

Day: 21.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 19.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.02 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 4.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 810.4

Radius: 9

Gravity: 10 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 4.45 AU - 4.63 AU

Year: 3625 Days

Day: 6.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 41.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 24,821,470 km

• M1: 111,899 km (0.076 R)
• M2: 453,581 km (0.088 R)
• M3: 804,837 km (0.117 R)
• M4: 1,111,662 km (0.083 R)
• M5: 1,576,313 km (0.032 R)
• M6: 1,906,625 km (0.113 R)
• M7: 2,434,855 km (0.108 R)
• M8: 2,759,183 km (0.108 R)
• M9: 3,556,241 km (0.046 R)
• M10: 4,107,958 km (0.098 R)
• M11: 4,691,389 km (0.107 R)
• M12: 4,990,435 km (0.03 R)
• M13: 7,191,918 km (0.105 R)
• M14: 8,288,021 km (0.081 R)
• M15: 10,094,864 km (0.091 R)
• M16: 10,680,241 km (0.117 R)
• M17: 12,908,950 km (0.104 R)
• M18: 13,800,254 km (0.104 R)
• M19: 15,105,495 km (0.108 R)
• M20: 15,540,077 km (0.064 R)
• M21: 16,320,679 km (0.047 R)
• M22: 17,185,803 km (0.106 R)
• M23: 18,881,794 km (0.072 R)
• M24: 20,686,693 km (0.062 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.8

Radius: 14.7

Gravity: 2.31 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 4.95 AU - 5.33 AU

Year: 4367 Days

Day: 14.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 24,821,470 km

• M1: 198,516 km (0.078 R)
• M2: 902,674 km (0.03 R)
• M3: 1,588,879 km (0.103 R)
• M4: 2,806,755 km (0.098 R)
• M5: 3,412,926 km (0.104 R)
• M6: 4,193,228 km (0.112 R)
• M7: 5,065,085 km (0.096 R)
• M8: 5,802,901 km (0.105 R)
• M9: 6,611,478 km (0.114 R)
• M10: 7,234,104 km (0.118 R)
• M11: 8,525,732 km (0.069 R)
• M12: 9,151,201 km (0.108 R)
• M13: 9,846,681 km (0.047 R)
• M14: 10,577,317 km (0.1 R)
• M15: 12,703,402 km (0.11 R)
• M16: 13,180,021 km (0.054 R)
• M17: 13,867,423 km (0.032 R)
• M18: 14,630,373 km (0.094 R)
• M19: 16,184,694 km (0.059 R)
• M20: 17,088,116 km (0.066 R)
• M21: 17,965,358 km (0.108 R)
• M22: 18,995,638 km (0.078 R)
• M23: 22,739,475 km (0.102 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 485 - 12,279 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit