🌌 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: 1.83

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.56 AU - 0.72 AU

Year: 194 Days

Day: 32.7 Hours

Environment

Temp: 140 °C

Axial Tilt: 28.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.02 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.88 AU - 1.16 AU

Year: 390 Days

Day: 17.2 Hours

Environment

Temp: 11 °C

Axial Tilt: 48.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.05

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.83 AU - 1.23 AU

Year: 396 Days

Day: 13.9 Hours

Environment

Temp: 4 °C

Axial Tilt: 47.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.54

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.11 AU - 1.55 AU

Year: 581 Days

Day: 47 Hours

Environment

Temp: -40 °C

Axial Tilt: 21.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.73

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2.73 AU - 3.77 AU

Year: 2219 Days

Day: 13.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 12.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 8.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.5

Radius: 9.8

Gravity: 9.18 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 8.13 AU - 9.79 AU

Year: 10158 Days

Day: 7.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 95,482,755 km

• M1: 460,163 km (0.102 R)
• M2: 904,319 km (0.061 R)
• M3: 1,430,604 km (0.065 R)
• M4: 1,993,691 km (0.107 R)
• M5: 2,473,451 km (0.032 R)
• M6: 2,983,430 km (0.088 R)
• M7: 3,613,686 km (0.106 R)
• M8: 4,418,672 km (0.093 R)
• M9: 6,192,903 km (0.069 R)
• M10: 7,727,927 km (0.113 R)
• M11: 9,059,198 km (0.032 R)
• M12: 9,602,239 km (0.069 R)
• M13: 10,917,204 km (0.114 R)
• M14: 11,646,643 km (0.113 R)
• M15: 15,302,217 km (0.076 R)
• M16: 16,072,795 km (0.049 R)
• M17: 31,276,128 km (0.118 R)
• M18: 32,745,029 km (0.101 R)
• M19: 35,094,015 km (0.084 R)
• M20: 36,186,827 km (0.031 R)
• M21: 50,049,314 km (0.105 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 222.4

Radius: 5.3

Gravity: 7.92 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 11.85 AU - 13.15 AU

Year: 16738 Days

Day: 23 Hours

Environment

Temp: -179 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 95,482,755 km

• M1: 65,973 km (0.117 R)
• M2: 297,849 km (0.064 R)
• M3: 501,602 km (0.105 R)
• M4: 675,584 km (0.052 R)
• M5: 1,041,052 km (0.115 R)
• M6: 1,232,537 km (0.118 R)
• M7: 1,825,094 km (0.087 R)
• M8: 2,193,853 km (0.109 R)
• M9: 4,789,376 km (0.095 R)
• M10: 5,004,946 km (0.107 R)
• M11: 5,555,616 km (0.116 R)
• M12: 6,400,694 km (0.087 R)
• M13: 6,624,643 km (0.074 R)
• M14: 9,208,647 km (0.073 R)
• M15: 11,443,040 km (0.077 R)
• M16: 15,169,224 km (0.037 R)
• M17: 15,567,902 km (0.107 R)
• M18: 17,160,671 km (0.075 R)
• M19: 18,256,176 km (0.071 R)
• M20: 19,631,429 km (0.102 R)
• M21: 20,666,497 km (0.073 R)
• M22: 21,989,840 km (0.056 R)
• M23: 25,543,537 km (0.117 R)
• M24: 31,028,842 km (0.099 R)
• M25: 32,212,610 km (0.1 R)
• M26: 33,875,091 km (0.063 R)
• M27: 37,010,064 km (0.109 R)
• M28: 37,974,821 km (0.082 R)
• M29: 42,001,846 km (0.099 R)
• M30: 42,524,392 km (0.101 R)
• M31: 43,582,497 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 683

Radius: 4.2

Gravity: 38.72 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 17.18 AU - 18.18 AU

Year: 28156 Days

Day: 18.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 95,482,755 km

• M1: 52,210 km (0.11 R)
• M2: 205,099 km (0.119 R)
• M3: 480,957 km (0.097 R)
• M4: 874,400 km (0.027 R)
• M5: 1,096,403 km (0.072 R)
• M6: 1,404,724 km (0.115 R)
• M7: 1,616,106 km (0.109 R)
• M8: 1,930,561 km (0.068 R)
• M9: 2,922,843 km (0.061 R)
• M10: 3,121,060 km (0.057 R)
• M11: 3,903,158 km (0.092 R)
• M12: 4,579,191 km (0.099 R)
• M13: 5,583,441 km (0.094 R)
• M14: 8,181,358 km (0.104 R)
• M15: 14,502,317 km (0.104 R)
• M16: 15,756,845 km (0.098 R)
• M17: 16,811,360 km (0.115 R)
• M18: 17,173,088 km (0.038 R)
• M19: 18,099,996 km (0.028 R)
• M20: 18,575,717 km (0.064 R)
• M21: 20,562,377 km (0.038 R)
• M22: 21,184,854 km (0.07 R)
• M23: 21,606,720 km (0.089 R)
• M24: 23,575,128 km (0.101 R)
• M25: 25,068,714 km (0.071 R)
• M26: 33,349,255 km (0.118 R)
• M27: 34,207,797 km (0.066 R)
• M28: 35,375,408 km (0.104 R)
• M29: 43,619,448 km (0.108 R)
• M30: 43,959,783 km (0.098 R)
• M31: 44,645,839 km (0.114 R)
• M32: 49,280,082 km (0.034 R)
• M33: 60,963,376 km (0.095 R)
• M34: 62,461,150 km (0.072 R)
• M35: 65,307,399 km (0.105 R)
• M36: 76,318,251 km (0.061 R)
• M37: 77,060,257 km (0.073 R)
• M38: 82,649,532 km (0.077 R)
• M39: 83,170,731 km (0.082 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 528 - 16,253 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit