🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.79

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.56 AU - 0.72 AU

Year: 189 Days

Day: 45 Hours

Environment

Temp: 143 °C

Axial Tilt: 28.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 60,402,890 km

• M1: 120,576 km (0.104 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.22

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.69 AU - 0.95 AU

Year: 274 Days

Day: 31.5 Hours

Environment

Temp: 104 °C

Axial Tilt: 29.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.69

Radius: 1.49

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 1.33 AU - 1.37 AU

Year: 579 Days

Day: 23.1 Hours

Environment

Temp: -35 °C

Axial Tilt: 4.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 2.56 AU - 3.84 AU

Year: 2112 Days

Day: 19.5 Hours

Environment

Temp: -119 °C

Axial Tilt: 36 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,402,890 km

• M1: 622,926 km (0.09 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.83

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 3.51 AU - 4.13 AU

Year: 2755 Days

Day: 44 Hours

Environment

Temp: -132 °C

Axial Tilt: 26.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 2.98 AU - 4.96 AU

Year: 2919 Days

Day: 36.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,402,890 km

• M1: 863,329 km (0.081 R)

Planet 7 - Terrestrial

Semi-Major Axis: 4.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.25

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 4.16 AU - 4.58 AU

Year: 3371 Days

Day: 16.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 32.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 8.44 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 12.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 568

Radius: 3.1

Gravity: 59.11 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 9.5 AU - 15.5 AU

Year: 16306 Days

Day: 22.2 Hours

Environment

Temp: -187 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 60,402,890 km

• M1: 39,045 km (0.114 R)
• M2: 334,202 km (0.091 R)
• M3: 466,147 km (0.053 R)
• M4: 989,590 km (0.1 R)
• M5: 1,096,852 km (0.079 R)
• M6: 1,335,161 km (0.067 R)
• M7: 1,451,698 km (0.058 R)
• M8: 1,738,776 km (0.025 R)
• M9: 3,486,678 km (0.075 R)
• M10: 4,058,740 km (0.072 R)
• M11: 4,272,964 km (0.074 R)
• M12: 4,559,444 km (0.105 R)
• M13: 5,682,026 km (0.065 R)
• M14: 9,801,503 km (0.116 R)
• M15: 11,645,596 km (0.094 R)
• M16: 11,891,236 km (0.11 R)
• M17: 18,126,325 km (0.1 R)
• M18: 22,827,887 km (0.05 R)
• M19: 27,191,657 km (0.102 R)
• M20: 33,541,638 km (0.107 R)
• M21: 42,816,257 km (0.071 R)
• M22: 45,792,806 km (0.119 R)
• M23: 46,404,212 km (0.084 R)
• M24: 47,487,301 km (0.093 R)
• M25: 52,486,413 km (0.061 R)
• M26: 56,239,524 km (0.117 R)
• M27: 59,078,593 km (0.094 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 287.3

Radius: 5.6

Gravity: 9.16 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 12.11 AU - 18.27 AU

Year: 21843 Days

Day: 23 Hours

Environment

Temp: -199 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 60,402,890 km

• M1: 72,256 km (0.058 R)
• M2: 1,105,827 km (0.084 R)
• M3: 1,748,051 km (0.076 R)
• M4: 1,973,495 km (0.044 R)
• M5: 2,358,261 km (0.105 R)
• M6: 3,150,531 km (0.097 R)
• M7: 3,787,968 km (0.076 R)
• M8: 5,314,913 km (0.118 R)
• M9: 6,135,757 km (0.114 R)
• M10: 6,454,400 km (0.102 R)
• M11: 6,952,711 km (0.099 R)
• M12: 10,893,867 km (0.085 R)
• M13: 11,539,531 km (0.085 R)
• M14: 11,780,533 km (0.071 R)
• M15: 12,907,155 km (0.095 R)
• M16: 13,496,570 km (0.116 R)
• M17: 18,624,935 km (0.055 R)
• M18: 20,498,947 km (0.087 R)
• M19: 21,120,676 km (0.103 R)
• M20: 22,682,927 km (0.091 R)
• M21: 23,830,791 km (0.116 R)
• M22: 25,218,461 km (0.109 R)
• M23: 26,450,100 km (0.078 R)
• M24: 27,721,233 km (0.072 R)
• M25: 29,143,610 km (0.051 R)
• M26: 30,960,327 km (0.085 R)
• M27: 31,192,502 km (0.098 R)
• M28: 38,445,007 km (0.075 R)
• M29: 48,131,021 km (0.104 R)
• M30: 48,599,112 km (0.034 R)
• M31: 48,912,819 km (0.107 R)
• M32: 54,118,675 km (0.05 R)
• M33: 56,334,968 km (0.104 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 454 - 10,533 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit