🌌 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: 0.63 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.59 AU - 0.67 AU

Year: 189 Days

Day: 29.7 Hours

Environment

Temp: 127 °C

Axial Tilt: 6.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.44

Radius: 1.16

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.62 AU - 0.88 AU

Year: 246 Days

Day: 34.1 Hours

Environment

Temp: 93 °C

Axial Tilt: 33.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.3 AU - 1.6 AU

Year: 661 Days

Day: 24.6 Hours

Environment

Temp: -40 °C

Axial Tilt: 14.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,498,505 km

• M1: 100,231 km (0.1 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.88

Radius: 1.53

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.31 AU - 1.75 AU

Year: 717 Days

Day: 19.9 Hours

Environment

Temp: -47 °C

Axial Tilt: 36.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,498,505 km

• M1: 1,101,040 km (0.088 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.61

Radius: 1.21

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 2.58 AU - 2.62 AU

Year: 1588 Days

Day: 26.7 Hours

Environment

Temp: -103 °C

Axial Tilt: 31.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1

Radius: 1

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 3.16 AU - 3.22 AU

Year: 2158 Days

Day: 19.1 Hours

Environment

Temp: -115 °C

Axial Tilt: 3.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 3.22 AU - 4.12 AU

Year: 2663 Days

Day: 15.8 Hours

Environment

Temp: -118 °C

Axial Tilt: 19.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,498,505 km

• M1: 76,145 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 173.1

Radius: 13.4

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 5.27 AU - 7.83 AU

Year: 6349 Days

Day: 7 Hours

Environment

Temp: -156 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,498,505 km

• M1: 191,635 km (0.1 R)
• M2: 654,341 km (0.117 R)
• M3: 1,079,049 km (0.11 R)
• M4: 1,777,821 km (0.116 R)
• M5: 2,372,024 km (0.107 R)
• M6: 3,045,214 km (0.06 R)
• M7: 3,843,319 km (0.048 R)
• M8: 4,894,394 km (0.105 R)
• M9: 6,789,799 km (0.117 R)
• M10: 7,625,751 km (0.12 R)
• M11: 8,254,362 km (0.12 R)
• M12: 10,589,734 km (0.098 R)
• M13: 11,457,851 km (0.072 R)
• M14: 14,398,197 km (0.118 R)
• M15: 18,270,538 km (0.049 R)
• M16: 19,037,077 km (0.091 R)
• M17: 20,258,095 km (0.065 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 646.6

Radius: 5.9

Gravity: 18.58 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 11.61 AU - 13.47 AU

Year: 16819 Days

Day: 18.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 44.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 66,498,505 km

• M1: 73,901 km (0.084 R)
• M2: 435,479 km (0.075 R)
• M3: 790,326 km (0.082 R)
• M4: 1,149,061 km (0.079 R)
• M5: 1,351,916 km (0.114 R)
• M6: 1,547,291 km (0.055 R)
• M7: 1,744,162 km (0.119 R)
• M8: 2,570,690 km (0.076 R)
• M9: 3,095,629 km (0.118 R)
• M10: 3,303,420 km (0.089 R)
• M11: 4,889,906 km (0.056 R)
• M12: 6,086,090 km (0.117 R)
• M13: 7,604,658 km (0.069 R)
• M14: 7,840,424 km (0.055 R)
• M15: 9,521,456 km (0.072 R)
• M16: 9,851,020 km (0.061 R)
• M17: 11,306,757 km (0.114 R)
• M18: 11,676,263 km (0.095 R)
• M19: 15,002,871 km (0.049 R)
• M20: 16,212,669 km (0.062 R)
• M21: 16,761,993 km (0.081 R)
• M22: 17,486,346 km (0.043 R)
• M23: 17,980,617 km (0.067 R)
• M24: 18,911,116 km (0.029 R)
• M25: 20,775,853 km (0.085 R)
• M26: 22,084,984 km (0.107 R)
• M27: 27,429,218 km (0.066 R)
• M28: 29,002,838 km (0.074 R)
• M29: 30,045,536 km (0.106 R)
• M30: 34,467,050 km (0.057 R)
• M31: 37,917,226 km (0.089 R)
• M32: 39,023,502 km (0.097 R)
• M33: 41,590,901 km (0.041 R)
• M34: 44,878,912 km (0.079 R)
• M35: 47,535,322 km (0.09 R)
• M36: 51,461,219 km (0.097 R)
• M37: 54,718,413 km (0.087 R)
• M38: 59,950,898 km (0.116 R)
• M39: 60,885,436 km (0.09 R)
• M40: 66,299,383 km (0.098 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 165 - 13,298 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit