🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.84

Radius: 0.93

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.53 AU - 0.63 AU

Year: 159 Days

Day: 20.2 Hours

Environment

Temp: 237 °C

Axial Tilt: 35.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.85

Radius: 1.71

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.65 AU - 0.81 AU

Year: 224 Days

Day: 15.3 Hours

Environment

Temp: 161 °C

Axial Tilt: 43 °

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: 3.17

Radius: 1.59

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.71 AU - 0.83 AU

Year: 243 Days

Day: 12.8 Hours

Environment

Temp: 158 °C

Axial Tilt: 21.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.52

Radius: 1.18

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.71 AU - 0.99 AU

Year: 282 Days

Day: 29.1 Hours

Environment

Temp: 161 °C

Axial Tilt: 11.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 5 - Terrestrial

Semi-Major Axis: 2.27 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.41

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 2.16 AU - 2.38 AU

Year: 1231 Days

Day: 45.1 Hours

Environment

Temp: -76 °C

Axial Tilt: 12.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.39

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 2.62 AU - 3.08 AU

Year: 1732 Days

Day: 42.7 Hours

Environment

Temp: -91 °C

Axial Tilt: 46.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.86 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 2.23 AU - 3.49 AU

Year: 1741 Days

Day: 12.2 Hours

Environment

Temp: -90 °C

Axial Tilt: 5.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 101,801,624 km

• M1: 610,060 km (0.073 R)

Asteroid Belt

Center: 4.89 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 6.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.2

Radius: 14.3

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 5.49 AU - 8.33 AU

Year: 6537 Days

Day: 12.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 101,801,624 km

• M1: 178,470 km (0.11 R)
• M2: 664,364 km (0.071 R)
• M3: 1,167,163 km (0.099 R)
• M4: 1,826,291 km (0.105 R)
• M5: 2,925,536 km (0.1 R)
• M6: 3,516,747 km (0.112 R)
• M7: 5,022,150 km (0.065 R)
• M8: 5,697,136 km (0.092 R)
• M9: 7,333,886 km (0.06 R)
• M10: 7,797,490 km (0.088 R)
• M11: 8,862,776 km (0.03 R)
• M12: 12,695,025 km (0.048 R)
• M13: 13,260,804 km (0.096 R)
• M14: 13,736,226 km (0.034 R)
• M15: 14,498,278 km (0.047 R)
• M16: 16,047,812 km (0.068 R)
• M17: 17,452,686 km (0.088 R)
• M18: 19,406,584 km (0.071 R)
• M19: 19,951,419 km (0.1 R)
• M20: 21,865,973 km (0.089 R)
• M21: 24,447,733 km (0.114 R)
• M22: 26,973,394 km (0.089 R)
• M23: 30,758,220 km (0.112 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 782.3

Radius: 7.6

Gravity: 13.54 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 18.64 AU - 18.64 AU

Year: 28963 Days

Day: 15.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 101,801,624 km

• M1: 94,845 km (0.104 R)
• M2: 430,991 km (0.101 R)
• M3: 848,669 km (0.108 R)
• M4: 1,645,876 km (0.092 R)
• M5: 2,096,465 km (0.116 R)
• M6: 2,951,865 km (0.096 R)
• M7: 3,334,387 km (0.092 R)
• M8: 3,918,267 km (0.09 R)
• M9: 4,380,824 km (0.055 R)
• M10: 6,268,001 km (0.101 R)
• M11: 6,603,699 km (0.105 R)
• M12: 7,207,326 km (0.073 R)
• M13: 7,683,795 km (0.111 R)
• M14: 9,865,680 km (0.105 R)
• M15: 11,483,731 km (0.095 R)
• M16: 11,841,868 km (0.094 R)
• M17: 12,133,734 km (0.061 R)
• M18: 14,149,266 km (0.108 R)
• M19: 16,288,366 km (0.12 R)
• M20: 16,923,858 km (0.105 R)
• M21: 24,451,622 km (0.098 R)
• M22: 25,526,034 km (0.11 R)
• M23: 26,881,541 km (0.098 R)
• M24: 28,544,620 km (0.056 R)
• M25: 32,785,121 km (0.108 R)
• M26: 33,506,183 km (0.111 R)
• M27: 39,497,877 km (0.119 R)
• M28: 44,214,847 km (0.098 R)
• M29: 44,565,505 km (0.103 R)
• M30: 52,756,587 km (0.115 R)
• M31: 57,829,899 km (0.102 R)
• M32: 60,376,653 km (0.068 R)
• M33: 65,238,285 km (0.075 R)
• M34: 92,633,096 km (0.093 R)
• M35: 93,495,228 km (0.099 R)
• M36: 96,997,315 km (0.093 R)

Kuiper Belt

Range: 30.5 - 58.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 501 - 15,997 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit