🌌 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: 3.78

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.4 AU - 0.66 AU

Year: 136 Days

Day: 31.7 Hours

Environment

Temp: 212 °C

Axial Tilt: 27 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 114,006,589 km

• M1: 39,643 km (0.047 R)
• M2: 281,543 km (0.072 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.78

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.63 AU - 0.95 AU

Year: 247 Days

Day: 25.9 Hours

Environment

Temp: 131 °C

Axial Tilt: 33.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 114,006,589 km

• M1: 388,206 km (0.085 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.78 AU - 0.84 AU

Year: 256 Days

Day: 31.4 Hours

Environment

Temp: 140 °C

Axial Tilt: 34.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 114,006,589 km

• M1: 51,162 km (0.098 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.12 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.05 AU - 1.19 AU

Year: 417 Days

Day: 24.4 Hours

Environment

Temp: 34 °C

Axial Tilt: 24.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.15

Radius: 1.06

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.08 AU - 1.32 AU

Year: 462 Days

Day: 44.5 Hours

Environment

Temp: 16 °C

Axial Tilt: 19.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 114,006,589 km

• M1: 192,084 km (0.074 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.37

Radius: 0.67

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1 AU - 1.64 AU

Year: 533 Days

Day: 21.1 Hours

Environment

Temp: 8 °C

Axial Tilt: 175.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 7 - Terrestrial

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 2.89 AU - 3.05 AU

Year: 1799 Days

Day: 41.7 Hours

Environment

Temp: -87 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 114,006,589 km

• M1: 49,068 km (0.106 R)
• M2: 403,615 km (0.085 R)

Asteroid Belt

Center: 5.74 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 8.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 467.4

Radius: 11.5

Gravity: 3.53 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 6.86 AU - 10.14 AU

Year: 8710 Days

Day: 8 Hours

Environment

Temp: -155 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 114,006,589 km

• M1: 143,165 km (0.063 R)
• M2: 513,569 km (0.105 R)
• M3: 914,641 km (0.052 R)
• M4: 1,296,415 km (0.026 R)
• M5: 2,314,129 km (0.11 R)
• M6: 2,824,557 km (0.096 R)
• M7: 3,707,334 km (0.059 R)
• M8: 4,330,709 km (0.116 R)
• M9: 6,180,636 km (0.108 R)
• M10: 13,924,570 km (0.11 R)
• M11: 14,335,515 km (0.102 R)
• M12: 20,444,793 km (0.089 R)
• M13: 21,052,908 km (0.064 R)
• M14: 30,097,745 km (0.115 R)
• M15: 30,687,011 km (0.105 R)
• M16: 31,484,667 km (0.111 R)
• M17: 35,354,614 km (0.082 R)
• M18: 37,460,204 km (0.12 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 938.3

Radius: 4.6

Gravity: 44.34 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 15.15 AU - 24.77 AU

Year: 31341 Days

Day: 18.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 114,006,589 km

• M1: 57,446 km (0.041 R)
• M2: 226,042 km (0.109 R)
• M3: 473,328 km (0.061 R)
• M4: 678,426 km (0.104 R)
• M5: 1,816,417 km (0.103 R)
• M6: 2,014,186 km (0.084 R)
• M7: 3,322,120 km (0.112 R)
• M8: 3,826,265 km (0.052 R)
• M9: 5,552,774 km (0.112 R)
• M10: 6,309,889 km (0.103 R)
• M11: 14,300,808 km (0.078 R)
• M12: 18,200,227 km (0.103 R)
• M13: 19,015,535 km (0.1 R)
• M14: 19,961,592 km (0.083 R)
• M15: 20,828,362 km (0.098 R)
• M16: 27,876,815 km (0.114 R)
• M17: 28,144,745 km (0.105 R)
• M18: 29,233,668 km (0.086 R)
• M19: 31,931,815 km (0.117 R)
• M20: 40,668,929 km (0.09 R)
• M21: 41,534,203 km (0.067 R)
• M22: 43,660,737 km (0.09 R)
• M23: 53,098,867 km (0.103 R)
• M24: 54,340,379 km (0.109 R)
• M25: 55,389,659 km (0.117 R)
• M26: 62,885,260 km (0.08 R)
• M27: 63,809,177 km (0.086 R)
• M28: 68,321,647 km (0.106 R)
• M29: 71,028,919 km (0.12 R)
• M30: 77,182,329 km (0.115 R)
• M31: 82,573,686 km (0.078 R)
• M32: 83,403,506 km (0.109 R)
• M33: 85,643,435 km (0.099 R)
• M34: 87,635,929 km (0.079 R)
• M35: 88,210,833 km (0.091 R)
• M36: 89,077,903 km (0.101 R)
• M37: 94,399,996 km (0.111 R)
• M38: 95,610,842 km (0.099 R)
• M39: 98,372,867 km (0.102 R)
• M40: 112,305,814 km (0.074 R)

Kuiper Belt

Range: 31.2 - 48.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 285 - 16,405 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit