🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.22

Radius: 1.08

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.4 AU - 0.66 AU

Year: 140 Days

Day: 26.6 Hours

Environment

Temp: 200 °C

Axial Tilt: 15.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 73,670,440 km

• M1: 27,376 km (0.116 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.34 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.99

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.24 AU - 1.44 AU

Year: 564 Days

Day: 18.8 Hours

Environment

Temp: 6 °C

Axial Tilt: 21.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 73,670,440 km

• M1: 175,478 km (0.082 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.34 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.6

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.25 AU - 1.43 AU

Year: 564 Days

Day: 24.4 Hours

Environment

Temp: -3 °C

Axial Tilt: 20.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.62

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.72 AU - 2.84 AU

Year: 1251 Days

Day: 35.1 Hours

Environment

Temp: -76 °C

Axial Tilt: 37.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,670,440 km

• M1: 1,583,493 km (0.089 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 2.64 AU - 3.38 AU

Year: 1898 Days

Day: 27.4 Hours

Environment

Temp: -105 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 2.53 AU - 4.19 AU

Year: 2238 Days

Day: 16.8 Hours

Environment

Temp: -119 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,670,440 km

• M1: 2,085,394 km (0.12 R)

Planet 7 - Terrestrial

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.41

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 3.57 AU - 3.87 AU

Year: 2608 Days

Day: 17.7 Hours

Environment

Temp: -119 °C

Axial Tilt: 29.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 7.05 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 10.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 478.8

Radius: 9.7

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 8.28 AU - 12.48 AU

Year: 12154 Days

Day: 5.4 Hours

Environment

Temp: -179 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 73,670,440 km

• M1: 120,725 km (0.08 R)
• M2: 656,585 km (0.036 R)
• M3: 1,560,306 km (0.066 R)
• M4: 1,953,748 km (0.078 R)
• M5: 2,965,329 km (0.113 R)
• M6: 3,354,882 km (0.112 R)
• M7: 4,016,852 km (0.113 R)
• M8: 4,613,150 km (0.051 R)
• M9: 8,426,998 km (0.091 R)
• M10: 10,559,216 km (0.044 R)
• M11: 12,262,238 km (0.041 R)
• M12: 12,968,191 km (0.058 R)
• M13: 15,858,870 km (0.119 R)
• M14: 16,982,500 km (0.093 R)
• M15: 22,442,373 km (0.042 R)
• M16: 23,054,229 km (0.077 R)
• M17: 27,853,328 km (0.098 R)
• M18: 29,175,325 km (0.101 R)
• M19: 32,495,949 km (0.052 R)
• M20: 47,439,729 km (0.089 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 857

Radius: 7.6

Gravity: 14.84 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 11.88 AU - 14.12 AU

Year: 17035 Days

Day: 19.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 73,670,440 km

• M1: 94,546 km (0.115 R)
• M2: 363,224 km (0.119 R)
• M3: 899,532 km (0.119 R)
• M4: 1,203,216 km (0.116 R)
• M5: 1,463,666 km (0.068 R)
• M6: 1,779,915 km (0.105 R)
• M7: 2,286,454 km (0.077 R)
• M8: 3,168,632 km (0.049 R)
• M9: 4,293,309 km (0.111 R)
• M10: 5,506,698 km (0.097 R)
• M11: 6,109,128 km (0.063 R)
• M12: 7,733,462 km (0.087 R)
• M13: 10,320,907 km (0.094 R)
• M14: 14,976,093 km (0.077 R)
• M15: 15,514,945 km (0.085 R)
• M16: 22,223,362 km (0.056 R)
• M17: 31,633,667 km (0.108 R)
• M18: 33,684,354 km (0.047 R)
• M19: 35,549,989 km (0.091 R)
• M20: 37,765,384 km (0.089 R)
• M21: 42,622,079 km (0.098 R)
• M22: 56,089,328 km (0.098 R)
• M23: 67,245,290 km (0.102 R)
• M24: 70,195,061 km (0.059 R)
• M25: 72,354,057 km (0.119 R)

Kuiper Belt

Range: 30.2 - 51.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 203 - 11,273 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit