🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.92

Radius: 0.97

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.56 AU - 0.74 AU

Year: 201 Days

Day: 31.9 Hours

Environment

Temp: 157 °C

Axial Tilt: 11.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.67

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 0.88 AU - 1.08 AU

Year: 371 Days

Day: 24 Hours

Environment

Temp: 14 °C

Axial Tilt: 12.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 59,695,864 km

• M1: 76,893 km (0.099 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.71 AU - 1.79 AU

Year: 886 Days

Day: 22.3 Hours

Environment

Temp: -63 °C

Axial Tilt: 27.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 59,695,864 km

• M1: 345,721 km (0.095 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.48

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 1.43 AU - 2.37 AU

Year: 1003 Days

Day: 26.8 Hours

Environment

Temp: -73 °C

Axial Tilt: 11.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.45

Radius: 0.73

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.91 AU - 3.47 AU

Year: 2182 Days

Day: 38 Hours

Environment

Temp: -113 °C

Axial Tilt: 12.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.53

Radius: 0.78

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 3.36 AU - 3.56 AU

Year: 2464 Days

Day: 35.3 Hours

Environment

Temp: -124 °C

Axial Tilt: 14.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.36 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663

Radius: 10.1

Gravity: 6.5 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 4.53 AU - 5.99 AU

Year: 4619 Days

Day: 10.4 Hours

Environment

Temp: -159 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 59,695,864 km

• M1: 131,347 km (0.12 R)
• M2: 520,451 km (0.088 R)
• M3: 1,049,878 km (0.118 R)
• M4: 1,649,017 km (0.106 R)
• M5: 2,463,428 km (0.111 R)
• M6: 2,800,023 km (0.089 R)
• M7: 3,403,501 km (0.096 R)
• M8: 3,911,386 km (0.109 R)
• M9: 4,616,590 km (0.098 R)
• M10: 5,572,221 km (0.044 R)
• M11: 7,347,799 km (0.063 R)
• M12: 8,015,604 km (0.096 R)
• M13: 8,345,766 km (0.091 R)
• M14: 10,178,340 km (0.112 R)
• M15: 11,143,396 km (0.08 R)
• M16: 11,930,131 km (0.098 R)
• M17: 12,458,660 km (0.109 R)
• M18: 13,002,598 km (0.049 R)
• M19: 13,510,932 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 252.5

Radius: 4.8

Gravity: 10.96 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 12.23 AU - 18.35 AU

Year: 22892 Days

Day: 16.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 59,695,864 km

• M1: 64,776 km (0.092 R)
• M2: 823,835 km (0.035 R)
• M3: 1,220,569 km (0.107 R)
• M4: 1,637,947 km (0.077 R)
• M5: 1,995,636 km (0.029 R)
• M6: 2,445,177 km (0.048 R)
• M7: 2,660,748 km (0.103 R)
• M8: 2,888,735 km (0.083 R)
• M9: 3,791,109 km (0.111 R)
• M10: 4,260,697 km (0.113 R)
• M11: 5,105,177 km (0.064 R)
• M12: 5,314,913 km (0.066 R)
• M13: 8,158,021 km (0.097 R)
• M14: 9,820,203 km (0.11 R)
• M15: 10,476,788 km (0.11 R)
• M16: 14,900,696 km (0.101 R)
• M17: 15,840,021 km (0.071 R)
• M18: 18,811,184 km (0.073 R)
• M19: 19,060,564 km (0.069 R)
• M20: 21,766,939 km (0.088 R)
• M21: 24,225,730 km (0.097 R)
• M22: 24,818,287 km (0.056 R)
• M23: 26,758,571 km (0.107 R)
• M24: 26,968,607 km (0.115 R)
• M25: 30,708,105 km (0.114 R)
• M26: 41,537,046 km (0.104 R)
• M27: 41,959,809 km (0.1 R)
• M28: 44,556,828 km (0.089 R)
• M29: 47,412,203 km (0.065 R)
• M30: 49,277,090 km (0.115 R)
• M31: 52,492,846 km (0.107 R)
• M32: 59,338,743 km (0.111 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 407 - 12,615 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit