🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.51 AU - 0.59 AU

Year: 143 Days

Day: 24.5 Hours

Environment

Temp: 190 °C

Axial Tilt: 31.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 55,271,274 km

• M1: 178,470 km (0.098 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.8

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.66 AU - 0.94 AU

Year: 250 Days

Day: 13.3 Hours

Environment

Temp: 201 °C

Axial Tilt: 34.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 55,271,274 km

• M1: 49,666 km (0.05 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.86

Radius: 1.72

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.65 AU - 1.05 AU

Year: 274 Days

Day: 24.5 Hours

Environment

Temp: 177 °C

Axial Tilt: 23.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.48 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.97

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.33 AU - 1.63 AU

Year: 630 Days

Day: 34 Hours

Environment

Temp: -1 °C

Axial Tilt: 3.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 55,271,274 km

• M1: 38,895 km (0.114 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.56 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.36

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.29 AU - 1.83 AU

Year: 682 Days

Day: 26 Hours

Environment

Temp: -8 °C

Axial Tilt: 23 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 6 - Terrestrial

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.21

Radius: 1.37

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 1.69 AU - 2.09 AU

Year: 909 Days

Day: 35.8 Hours

Environment

Temp: -50 °C

Axial Tilt: 14.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 55,271,274 km

• M1: 32,164 km (0.045 R)
• M2: 122,820 km (0.079 R)

Planet 7 - Terrestrial

Semi-Major Axis: 2.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 2.39 AU - 2.91 AU

Year: 1509 Days

Day: 47.8 Hours

Environment

Temp: -78 °C

Axial Tilt: 18.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 3.03 AU - 4.71 AU

Year: 2663 Days

Day: 23.8 Hours

Environment

Temp: -106 °C

Axial Tilt: 22 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 8.18 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 12.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 440.4

Radius: 8.1

Gravity: 6.71 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 10.13 AU - 14.85 AU

Year: 15443 Days

Day: 14.4 Hours

Environment

Temp: -179 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 55,271,274 km

• M1: 100,679 km (0.096 R)
• M2: 467,344 km (0.115 R)
• M3: 816,655 km (0.037 R)
• M4: 1,092,962 km (0.075 R)
• M5: 1,681,480 km (0.113 R)
• M6: 5,541,105 km (0.084 R)
• M7: 6,240,326 km (0.104 R)
• M8: 6,671,317 km (0.099 R)
• M9: 8,175,673 km (0.036 R)
• M10: 9,329,821 km (0.029 R)
• M11: 9,634,701 km (0.109 R)
• M12: 11,374,076 km (0.097 R)
• M13: 14,495,734 km (0.067 R)
• M14: 24,319,228 km (0.076 R)
• M15: 32,451,369 km (0.112 R)
• M16: 33,152,085 km (0.099 R)
• M17: 34,826,384 km (0.084 R)
• M18: 37,187,487 km (0.115 R)
• M19: 38,732,684 km (0.091 R)
• M20: 46,070,908 km (0.079 R)
• M21: 52,026,848 km (0.095 R)

Kuiper Belt

Range: 31.4 - 52.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 201 - 10,814 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit