🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.1

Radius: 1.35

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.59 AU - 0.79 AU

Year: 201 Days

Day: 32 Hours

Environment

Temp: 235 °C

Axial Tilt: 33.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 53,038,790 km

• M1: 73,752 km (0.117 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.89 AU - 1.09 AU

Year: 345 Days

Day: 41.5 Hours

Environment

Temp: 79 °C

Axial Tilt: 36.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 53,038,790 km

• M1: 52,808 km (0.067 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.19 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.63

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.92 AU - 1.46 AU

Year: 454 Days

Day: 39.3 Hours

Environment

Temp: 23 °C

Axial Tilt: 10.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.11

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.95 AU - 1.45 AU

Year: 460 Days

Day: 37.3 Hours

Environment

Temp: 16 °C

Axial Tilt: 1.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.15 AU - 1.71 AU

Year: 598 Days

Day: 39.9 Hours

Environment

Temp: 13 °C

Axial Tilt: 19.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 6 - Terrestrial

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 1.8 AU - 2.3 AU

Year: 1027 Days

Day: 21.8 Hours

Environment

Temp: -49 °C

Axial Tilt: 35.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,038,790 km

• M1: 481,256 km (0.083 R)

Planet 7 - Terrestrial

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.95

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 2.2 AU - 2.32 AU

Year: 1189 Days

Day: 46.7 Hours

Environment

Temp: -69 °C

Axial Tilt: 12.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 4.09 AU - 4.75 AU

Year: 3251 Days

Day: 23.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 18 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 53,038,790 km

• M1: 56,099 km (0.111 R)
• M2: 3,212,165 km (0.059 R)

Asteroid Belt

Center: 7.55 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 10.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624.2

Radius: 13.3

Gravity: 3.53 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 8.86 AU - 12.48 AU

Year: 12193 Days

Day: 14.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 53,038,790 km

• M1: 165,455 km (0.102 R)
• M2: 634,445 km (0.07 R)
• M3: 1,217,727 km (0.028 R)
• M4: 1,725,312 km (0.099 R)
• M5: 4,310,812 km (0.115 R)
• M6: 8,216,663 km (0.088 R)
• M7: 9,106,920 km (0.081 R)
• M8: 9,803,448 km (0.113 R)
• M9: 11,415,664 km (0.118 R)
• M10: 13,012,023 km (0.119 R)
• M11: 16,282,382 km (0.044 R)
• M12: 17,384,170 km (0.099 R)
• M13: 18,068,730 km (0.113 R)
• M14: 21,074,002 km (0.114 R)
• M15: 21,940,323 km (0.099 R)
• M16: 27,747,413 km (0.093 R)
• M17: 28,577,831 km (0.098 R)
• M18: 28,999,248 km (0.094 R)
• M19: 29,424,854 km (0.114 R)
• M20: 33,561,684 km (0.073 R)
• M21: 47,531,582 km (0.103 R)
• M22: 49,322,568 km (0.082 R)

Kuiper Belt

Range: 31.4 - 48.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 448 - 10,542 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit