🌌 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: 4.94

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.61 AU - 0.71 AU

Year: 205 Days

Day: 14.5 Hours

Environment

Temp: 136 °C

Axial Tilt: 113.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 56,073,201 km

• M1: 48,470 km (0.072 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.21

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.66 AU - 0.92 AU

Year: 269 Days

Day: 38.6 Hours

Environment

Temp: 85 °C

Axial Tilt: 50 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.88 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.38

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.76 AU - 1 AU

Year: 316 Days

Day: 43.1 Hours

Environment

Temp: 35 °C

Axial Tilt: 66.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.31 AU - 1.33 AU

Year: 581 Days

Day: 41.8 Hours

Environment

Temp: -45 °C

Axial Tilt: 17.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.96

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.7 AU - 2.04 AU

Year: 979 Days

Day: 41.9 Hours

Environment

Temp: -81 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.83

Radius: 0.93

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.83 AU - 2.45 AU

Year: 1199 Days

Day: 20.2 Hours

Environment

Temp: -89 °C

Axial Tilt: 31.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.86 AU - 3.48 AU

Year: 2161 Days

Day: 12.2 Hours

Environment

Temp: -122 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.33 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 5.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 872.7

Radius: 9.6

Gravity: 9.47 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 4.7 AU - 6.26 AU

Year: 4912 Days

Day: 8.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 56,073,201 km

• M1: 119,379 km (0.049 R)
• M2: 501,302 km (0.107 R)
• M3: 972,237 km (0.077 R)
• M4: 1,363,884 km (0.077 R)
• M5: 1,686,566 km (0.087 R)
• M6: 2,135,958 km (0.05 R)
• M7: 2,846,099 km (0.101 R)
• M8: 3,750,867 km (0.103 R)
• M9: 4,573,057 km (0.081 R)
• M10: 4,999,411 km (0.1 R)
• M11: 5,365,328 km (0.098 R)
• M12: 5,688,758 km (0.034 R)
• M13: 6,025,353 km (0.073 R)
• M14: 7,987,778 km (0.097 R)
• M15: 8,449,737 km (0.096 R)
• M16: 8,888,806 km (0.055 R)
• M17: 9,259,360 km (0.078 R)
• M18: 11,850,545 km (0.115 R)
• M19: 14,155,699 km (0.08 R)
• M20: 16,994,617 km (0.042 R)
• M21: 17,759,661 km (0.092 R)
• M22: 21,562,588 km (0.105 R)
• M23: 21,933,142 km (0.106 R)
• M24: 22,763,261 km (0.068 R)
• M25: 24,326,259 km (0.103 R)
• M26: 27,577,470 km (0.045 R)
• M27: 31,296,473 km (0.093 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819.6

Radius: 8.8

Gravity: 10.58 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 9.25 AU - 10.15 AU

Year: 11567 Days

Day: 7.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 56,073,201 km

• M1: 109,506 km (0.108 R)
• M2: 511,774 km (0.08 R)
• M3: 1,150,856 km (0.105 R)
• M4: 1,635,554 km (0.113 R)
• M5: 2,875,720 km (0.1 R)
• M6: 3,253,604 km (0.111 R)
• M7: 3,558,485 km (0.069 R)
• M8: 7,489,468 km (0.068 R)
• M9: 8,253,913 km (0.08 R)
• M10: 9,832,619 km (0.077 R)
• M11: 11,779,486 km (0.043 R)
• M12: 12,137,324 km (0.078 R)
• M13: 13,641,680 km (0.113 R)
• M14: 13,970,197 km (0.056 R)
• M15: 15,980,344 km (0.112 R)
• M16: 16,345,512 km (0.093 R)
• M17: 18,574,072 km (0.109 R)
• M18: 19,635,917 km (0.1 R)
• M19: 22,240,117 km (0.083 R)
• M20: 22,971,651 km (0.097 R)
• M21: 30,071,715 km (0.116 R)
• M22: 31,763,069 km (0.115 R)
• M23: 34,721,367 km (0.105 R)
• M24: 35,088,330 km (0.109 R)
• M25: 36,834,885 km (0.06 R)
• M26: 39,695,346 km (0.042 R)
• M27: 41,728,381 km (0.075 R)
• M28: 43,121,736 km (0.12 R)
• M29: 45,707,685 km (0.111 R)
• M30: 50,088,209 km (0.118 R)
• M31: 51,661,381 km (0.086 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 251 - 17,237 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit