🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.4 AU - 0.64 AU

Year: 134 Days

Day: 39.8 Hours

Environment

Temp: 183 °C

Axial Tilt: 41.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 39,146,175 km

• M1: 166,802 km (0.092 R)
• M2: 292,913 km (0.116 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.35

Radius: 1.13

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.53 AU - 0.55 AU

Year: 141 Days

Day: 33.6 Hours

Environment

Temp: 176 °C

Axial Tilt: 10.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.31

Radius: 1.79

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.67 AU - 0.87 AU

Year: 241 Days

Day: 13.6 Hours

Environment

Temp: 151 °C

Axial Tilt: 5.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.44

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.85 AU - 1.33 AU

Year: 406 Days

Day: 42.7 Hours

Environment

Temp: 18 °C

Axial Tilt: 32.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 39,146,175 km

• M1: 750,233 km (0.094 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.25 AU - 1.79 AU

Year: 668 Days

Day: 25.1 Hours

Environment

Temp: -28 °C

Axial Tilt: 11.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,146,175 km

• M1: 1,085,183 km (0.117 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.48

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.99 AU - 3.77 AU

Year: 2215 Days

Day: 14.7 Hours

Environment

Temp: -109 °C

Axial Tilt: 44.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 5.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 306.2

Radius: 14.4

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 4.28 AU - 6.48 AU

Year: 4448 Days

Day: 12.3 Hours

Environment

Temp: -140 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 39,146,175 km

• M1: 179,218 km (0.118 R)
• M2: 674,537 km (0.12 R)
• M3: 1,167,163 km (0.055 R)
• M4: 2,108,881 km (0.082 R)
• M5: 2,778,780 km (0.082 R)
• M6: 3,645,102 km (0.11 R)
• M7: 5,398,987 km (0.079 R)
• M8: 6,239,727 km (0.114 R)
• M9: 8,017,548 km (0.047 R)
• M10: 8,622,073 km (0.086 R)
• M11: 9,365,575 km (0.103 R)
• M12: 10,859,758 km (0.113 R)
• M13: 11,308,701 km (0.106 R)
• M14: 13,508,239 km (0.115 R)
• M15: 16,295,696 km (0.035 R)
• M16: 17,212,731 km (0.09 R)
• M17: 18,392,909 km (0.07 R)
• M18: 20,602,619 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 449

Radius: 13.2

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 5.22 AU - 5.92 AU

Year: 4686 Days

Day: 7 Hours

Environment

Temp: -150 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,146,175 km

• M1: 164,408 km (0.056 R)
• M2: 772,823 km (0.117 R)
• M3: 1,328,429 km (0.109 R)
• M4: 1,785,301 km (0.097 R)
• M5: 4,248,430 km (0.075 R)
• M6: 5,058,353 km (0.053 R)
• M7: 5,663,027 km (0.106 R)
• M8: 6,922,941 km (0.05 R)
• M9: 9,209,544 km (0.086 R)
• M10: 10,317,616 km (0.099 R)
• M11: 12,235,759 km (0.069 R)
• M12: 13,475,477 km (0.047 R)
• M13: 15,926,489 km (0.081 R)
• M14: 17,228,289 km (0.053 R)
• M15: 20,043,272 km (0.062 R)
• M16: 21,559,896 km (0.068 R)
• M17: 22,311,774 km (0.1 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.3

Radius: 10

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 7.61 AU - 9.33 AU

Year: 8787 Days

Day: 9.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 39,146,175 km

• M1: 124,316 km (0.106 R)
• M2: 517,609 km (0.063 R)
• M3: 858,841 km (0.091 R)
• M4: 1,617,901 km (0.1 R)
• M5: 1,929,813 km (0.09 R)
• M6: 2,547,652 km (0.064 R)
• M7: 3,380,912 km (0.081 R)
• M8: 4,175,725 km (0.096 R)
• M9: 4,972,932 km (0.114 R)
• M10: 7,275,094 km (0.09 R)
• M11: 8,016,950 km (0.116 R)
• M12: 8,765,538 km (0.101 R)
• M13: 10,210,503 km (0.109 R)
• M14: 10,644,038 km (0.081 R)
• M15: 13,224,003 km (0.117 R)
• M16: 13,566,283 km (0.12 R)
• M17: 13,914,397 km (0.072 R)
• M18: 15,555,486 km (0.073 R)
• M19: 18,785,005 km (0.044 R)
• M20: 20,939,064 km (0.111 R)
• M21: 21,956,180 km (0.059 R)
• M22: 24,343,314 km (0.099 R)
• M23: 25,205,147 km (0.084 R)
• M24: 27,819,370 km (0.072 R)
• M25: 31,309,787 km (0.087 R)
• M26: 34,540,652 km (0.086 R)
• M27: 34,972,990 km (0.077 R)
• M28: 36,403,445 km (0.111 R)
• M29: 37,302,977 km (0.109 R)
• M30: 38,101,979 km (0.051 R)

Kuiper Belt

Range: 30.8 - 50.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 350 - 15,694 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit