🌌 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: 0.66 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.48

Radius: 0.75

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.5 AU - 0.82 AU

Year: 201 Days

Day: 20.9 Hours

Environment

Temp: 203 °C

Axial Tilt: 34.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.1 AU - 1.16 AU

Year: 450 Days

Day: 12.4 Hours

Environment

Temp: 12 °C

Axial Tilt: 16.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 1.27 AU - 1.35 AU

Year: 562 Days

Day: 17.2 Hours

Environment

Temp: -40 °C

Axial Tilt: 3.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.95

Radius: 0.98

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.21 AU - 1.79 AU

Year: 688 Days

Day: 14.9 Hours

Environment

Temp: -37 °C

Axial Tilt: 28.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.23

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.36 AU - 2.24 AU

Year: 905 Days

Day: 18.7 Hours

Environment

Temp: -67 °C

Axial Tilt: 12.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,132,989 km

• M1: 195,375 km (0.119 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.97

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 2.14 AU - 2.42 AU

Year: 1290 Days

Day: 39.4 Hours

Environment

Temp: -77 °C

Axial Tilt: 25.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,132,989 km

• M1: 44,730 km (0.085 R)

Planet 7 - Terrestrial

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.77

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 2.96 AU - 4.82 AU

Year: 2875 Days

Day: 45.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 15.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 6.12 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 8.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 199.9

Radius: 10.8

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 8.06 AU - 8.62 AU

Year: 9026 Days

Day: 12.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 84,132,989 km

• M1: 135,087 km (0.108 R)
• M2: 563,685 km (0.112 R)
• M3: 1,969,905 km (0.058 R)
• M4: 2,387,432 km (0.114 R)
• M5: 2,937,055 km (0.076 R)
• M6: 4,387,257 km (0.06 R)
• M7: 5,325,385 km (0.095 R)
• M8: 6,360,752 km (0.096 R)
• M9: 10,713,751 km (0.043 R)
• M10: 14,215,687 km (0.119 R)
• M11: 18,351,470 km (0.102 R)
• M12: 21,754,822 km (0.03 R)
• M13: 22,116,699 km (0.112 R)
• M14: 22,927,070 km (0.092 R)
• M15: 23,987,121 km (0.04 R)
• M16: 24,373,532 km (0.041 R)
• M17: 24,842,671 km (0.059 R)
• M18: 25,960,766 km (0.077 R)
• M19: 26,614,508 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 947

Radius: 6.9

Gravity: 19.89 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 13.04 AU - 15.1 AU

Year: 19777 Days

Day: 17.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 84,132,989 km

• M1: 85,869 km (0.047 R)
• M2: 336,745 km (0.091 R)
• M3: 671,395 km (0.037 R)
• M4: 944,561 km (0.081 R)
• M5: 1,247,646 km (0.112 R)
• M6: 2,011,044 km (0.118 R)
• M7: 2,814,086 km (0.104 R)
• M8: 4,240,352 km (0.091 R)
• M9: 8,811,913 km (0.045 R)
• M10: 10,403,784 km (0.064 R)
• M11: 11,300,474 km (0.097 R)
• M12: 11,971,869 km (0.092 R)
• M13: 14,453,997 km (0.049 R)
• M14: 14,845,793 km (0.054 R)
• M15: 16,315,293 km (0.076 R)
• M16: 18,422,080 km (0.101 R)
• M17: 20,506,876 km (0.096 R)
• M18: 22,325,537 km (0.112 R)
• M19: 24,469,425 km (0.119 R)
• M20: 26,982,070 km (0.077 R)
• M21: 27,218,734 km (0.107 R)
• M22: 27,576,123 km (0.098 R)
• M23: 27,936,804 km (0.087 R)
• M24: 28,790,559 km (0.095 R)
• M25: 35,119,447 km (0.056 R)
• M26: 35,543,257 km (0.106 R)
• M27: 37,272,609 km (0.114 R)
• M28: 38,456,077 km (0.119 R)
• M29: 49,723,191 km (0.096 R)
• M30: 54,482,348 km (0.075 R)
• M31: 61,560,721 km (0.113 R)
• M32: 63,839,844 km (0.109 R)
• M33: 71,465,296 km (0.118 R)
• M34: 73,750,404 km (0.059 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 232 - 17,631 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit