🌌 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: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.4 AU - 0.62 AU

Year: 127 Days

Day: 31.6 Hours

Environment

Temp: 262 °C

Axial Tilt: 24 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.22

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.32 AU - 1.52 AU

Year: 589 Days

Day: 23.8 Hours

Environment

Temp: -2 °C

Axial Tilt: 49.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.72

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.75 AU - 2.13 AU

Year: 941 Days

Day: 21.6 Hours

Environment

Temp: -41 °C

Axial Tilt: 38.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.12

Radius: 0.43

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.97 AU - 2.35 AU

Year: 1106 Days

Day: 46.7 Hours

Environment

Temp: -54 °C

Axial Tilt: 5.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 2.58 AU - 3.48 AU

Year: 1837 Days

Day: 34.5 Hours

Environment

Temp: -92 °C

Axial Tilt: 10.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,574,616 km

• M1: 1,099,694 km (0.032 R)

Asteroid Belt

Center: 6.7 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 10.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290

Radius: 9.5

Gravity: 3.21 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 8 AU - 12.72 AU

Year: 11613 Days

Day: 11.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,574,616 km

• M1: 118,182 km (0.045 R)
• M2: 632,649 km (0.06 R)
• M3: 1,156,840 km (0.073 R)
• M4: 1,529,937 km (0.06 R)
• M5: 2,674,511 km (0.1 R)
• M6: 4,208,039 km (0.101 R)
• M7: 5,014,670 km (0.058 R)
• M8: 8,767,632 km (0.025 R)
• M9: 10,707,168 km (0.113 R)
• M10: 22,057,757 km (0.11 R)
• M11: 34,649,111 km (0.054 R)
• M12: 34,975,683 km (0.119 R)
• M13: 37,432,678 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 12.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 390.9

Radius: 13.6

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 10.33 AU - 14.47 AU

Year: 15206 Days

Day: 14.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,574,616 km

• M1: 169,195 km (0.078 R)
• M2: 750,233 km (0.098 R)
• M3: 2,717,445 km (0.088 R)
• M4: 3,398,864 km (0.075 R)
• M5: 4,453,080 km (0.105 R)
• M6: 4,881,229 km (0.118 R)
• M7: 6,222,075 km (0.089 R)
• M8: 7,080,018 km (0.078 R)
• M9: 9,570,973 km (0.062 R)
• M10: 11,319,772 km (0.103 R)
• M11: 16,502,141 km (0.056 R)
• M12: 28,434,217 km (0.105 R)
• M13: 36,126,091 km (0.087 R)
• M14: 38,372,751 km (0.083 R)

Kuiper Belt

Range: 31.5 - 51.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 220 - 18,837 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit