🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.53 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.03

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 1 AU - 1.12 AU

Year: 416 Days

Day: 33.2 Hours

Environment

Temp: 0 °C

Axial Tilt: 27 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.19

Radius: 1.77

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.96 AU - 1.26 AU

Year: 445 Days

Day: 12.1 Hours

Environment

Temp: 0 °C

Axial Tilt: 4.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 70,636,327 km

• M1: 53,406 km (0.112 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 1.03 AU - 1.37 AU

Year: 501 Days

Day: 43.5 Hours

Environment

Temp: -25 °C

Axial Tilt: 1.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.12

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 1.79 AU - 1.79 AU

Year: 912 Days

Day: 31.3 Hours

Environment

Temp: -70 °C

Axial Tilt: 24.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 70,636,327 km

• M1: 1,016,817 km (0.1 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.9 AU - 1.94 AU

Year: 1013 Days

Day: 48 Hours

Environment

Temp: -66 °C

Axial Tilt: 36 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.12

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 2.09 AU - 2.59 AU

Year: 1363 Days

Day: 21.8 Hours

Environment

Temp: -88 °C

Axial Tilt: 7.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 70,636,327 km

• M1: 1,650,513 km (0.105 R)
• M2: 1,790,687 km (0.114 R)

Planet 7 - Terrestrial

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 2.09 AU - 3.17 AU

Year: 1624 Days

Day: 20.9 Hours

Environment

Temp: -109 °C

Axial Tilt: 31.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 10.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.7

Radius: 13.6

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 10.27 AU - 10.77 AU

Year: 12993 Days

Day: 9.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 70,636,327 km

• M1: 169,195 km (0.093 R)
• M2: 658,231 km (0.11 R)
• M3: 1,332,319 km (0.036 R)
• M4: 1,774,680 km (0.081 R)
• M5: 2,841,911 km (0.098 R)
• M6: 8,865,170 km (0.047 R)
• M7: 9,716,830 km (0.086 R)
• M8: 11,256,641 km (0.062 R)
• M9: 12,894,738 km (0.07 R)
• M10: 13,740,116 km (0.109 R)
• M11: 16,084,165 km (0.095 R)
• M12: 16,569,311 km (0.117 R)
• M13: 17,935,289 km (0.057 R)
• M14: 19,609,289 km (0.085 R)
• M15: 24,337,778 km (0.111 R)
• M16: 29,776,708 km (0.097 R)
• M17: 34,466,452 km (0.091 R)
• M18: 38,260,852 km (0.06 R)
• M19: 40,005,163 km (0.063 R)
• M20: 42,193,930 km (0.101 R)
• M21: 43,251,138 km (0.097 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 313.2

Radius: 4.5

Gravity: 15.47 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 13.5 AU - 20.3 AU

Year: 26456 Days

Day: 16.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 70,636,327 km

• M1: 55,950 km (0.108 R)
• M2: 222,003 km (0.057 R)
• M3: 396,584 km (0.064 R)
• M4: 620,532 km (0.111 R)
• M5: 777,161 km (0.107 R)
• M6: 1,132,456 km (0.072 R)
• M7: 1,689,858 km (0.093 R)
• M8: 1,867,879 km (0.082 R)
• M9: 2,685,731 km (0.111 R)
• M10: 3,213,661 km (0.112 R)
• M11: 3,748,324 km (0.108 R)
• M12: 3,928,889 km (0.103 R)
• M13: 4,405,807 km (0.09 R)
• M14: 4,675,532 km (0.107 R)
• M15: 5,173,842 km (0.077 R)
• M16: 6,150,567 km (0.085 R)
• M17: 6,748,360 km (0.11 R)
• M18: 7,198,350 km (0.064 R)
• M19: 8,513,166 km (0.055 R)
• M20: 9,145,815 km (0.117 R)
• M21: 9,529,085 km (0.061 R)
• M22: 11,293,742 km (0.113 R)
• M23: 12,121,915 km (0.042 R)
• M24: 13,614,453 km (0.093 R)
• M25: 15,377,614 km (0.099 R)
• M26: 17,536,760 km (0.118 R)
• M27: 17,704,310 km (0.116 R)
• M28: 20,347,554 km (0.094 R)
• M29: 30,431,498 km (0.111 R)
• M30: 35,653,810 km (0.104 R)
• M31: 39,687,866 km (0.091 R)
• M32: 49,144,995 km (0.076 R)
• M33: 51,509,090 km (0.11 R)
• M34: 60,761,120 km (0.101 R)
• M35: 67,097,637 km (0.046 R)
• M36: 68,540,060 km (0.071 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: 169 - 11,203 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit