🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.6 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.53

Radius: 0.78

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.13 AU - 1.27 AU

Year: 488 Days

Day: 24.7 Hours

Environment

Temp: -5 °C

Axial Tilt: 16 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.13 AU - 1.81 AU

Year: 661 Days

Day: 15.8 Hours

Environment

Temp: -33 °C

Axial Tilt: 2.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.2

Radius: 1.08

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 1.33 AU - 1.95 AU

Year: 779 Days

Day: 42.9 Hours

Environment

Temp: -56 °C

Axial Tilt: 5.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 2.72 AU - 3.42 AU

Year: 1995 Days

Day: 33.5 Hours

Environment

Temp: -107 °C

Axial Tilt: 38.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.15 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 3.09 AU - 3.21 AU

Year: 2073 Days

Day: 19 Hours

Environment

Temp: -120 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 3.21 AU - 3.31 AU

Year: 2183 Days

Day: 19.3 Hours

Environment

Temp: -110 °C

Axial Tilt: 4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 59,094,603 km

• M1: 133,292 km (0.094 R)
• M2: 1,525,749 km (0.112 R)

Asteroid Belt

Center: 4.12 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 4.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279

Radius: 14.9

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 3.75 AU - 6.19 AU

Year: 4109 Days

Day: 12.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 59,094,603 km

• M1: 208,539 km (0.085 R)
• M2: 859,290 km (0.059 R)
• M3: 1,876,556 km (0.098 R)
• M4: 2,873,476 km (0.099 R)
• M5: 3,768,819 km (0.059 R)
• M6: 6,167,920 km (0.068 R)
• M7: 8,391,842 km (0.103 R)
• M8: 8,997,115 km (0.061 R)
• M9: 10,145,129 km (0.079 R)
• M10: 13,669,057 km (0.03 R)
• M11: 17,128,358 km (0.085 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 990.6

Radius: 9.8

Gravity: 10.31 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 5.92 AU - 9.46 AU

Year: 7908 Days

Day: 13 Hours

Environment

Temp: -157 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 59,094,603 km

• M1: 121,922 km (0.094 R)
• M2: 491,728 km (0.082 R)
• M3: 810,222 km (0.053 R)
• M4: 1,272,928 km (0.109 R)
• M5: 1,665,473 km (0.054 R)
• M6: 2,070,285 km (0.08 R)
• M7: 2,463,727 km (0.072 R)
• M8: 2,864,350 km (0.109 R)
• M9: 3,170,428 km (0.11 R)
• M10: 3,645,999 km (0.099 R)
• M11: 4,921,920 km (0.119 R)
• M12: 8,241,197 km (0.045 R)
• M13: 11,848,301 km (0.094 R)
• M14: 12,877,385 km (0.057 R)
• M15: 20,983,196 km (0.093 R)
• M16: 22,146,469 km (0.106 R)
• M17: 22,572,224 km (0.094 R)
• M18: 25,613,399 km (0.025 R)
• M19: 28,715,760 km (0.084 R)
• M20: 30,044,788 km (0.073 R)
• M21: 38,034,361 km (0.047 R)
• M22: 39,886,532 km (0.083 R)
• M23: 43,636,353 km (0.075 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 272.7

Radius: 5

Gravity: 10.91 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 14.93 AU - 15.21 AU

Year: 21696 Days

Day: 18.8 Hours

Environment

Temp: -196 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 59,094,603 km

• M1: 62,233 km (0.045 R)
• M2: 337,194 km (0.109 R)
• M3: 493,224 km (0.092 R)
• M4: 699,370 km (0.089 R)
• M5: 1,006,943 km (0.089 R)
• M6: 1,516,922 km (0.102 R)
• M7: 2,301,414 km (0.119 R)
• M8: 2,465,223 km (0.101 R)
• M9: 3,028,160 km (0.119 R)
• M10: 3,897,174 km (0.091 R)
• M11: 4,921,321 km (0.087 R)
• M12: 7,892,933 km (0.112 R)
• M13: 8,362,671 km (0.076 R)
• M14: 9,306,184 km (0.084 R)
• M15: 11,110,035 km (0.096 R)
• M16: 12,497,107 km (0.094 R)
• M17: 13,395,592 km (0.089 R)
• M18: 15,537,235 km (0.096 R)
• M19: 16,650,991 km (0.12 R)
• M20: 20,571,802 km (0.104 R)
• M21: 21,101,378 km (0.099 R)
• M22: 23,790,101 km (0.114 R)
• M23: 30,173,591 km (0.111 R)
• M24: 35,679,391 km (0.086 R)
• M25: 39,203,917 km (0.085 R)
• M26: 45,136,520 km (0.082 R)
• M27: 46,180,115 km (0.12 R)
• M28: 46,481,106 km (0.104 R)
• M29: 50,515,461 km (0.081 R)
• M30: 54,106,259 km (0.096 R)
• M31: 56,649,722 km (0.104 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: 232 - 13,046 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit