🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.99

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.64 AU - 0.82 AU

Year: 192 Days

Day: 15.8 Hours

Environment

Temp: 279 °C

Axial Tilt: 30 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.4 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 1.22 AU - 1.58 AU

Year: 510 Days

Day: 47.4 Hours

Environment

Temp: 162 °C

Axial Tilt: 89.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 2.05 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.82 AU - 2.28 AU

Year: 903 Days

Day: 16.7 Hours

Environment

Temp: 22 °C

Axial Tilt: 26.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 104,719,929 km

• M1: 61,335 km (0.086 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 2.61 AU - 3.71 AU

Year: 1728 Days

Day: 23.1 Hours

Environment

Temp: -61 °C

Axial Tilt: 14.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.44 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 4.44 AU - 4.44 AU

Year: 2878 Days

Day: 23 Hours

Environment

Temp: -85 °C

Axial Tilt: 9.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 7.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 6.86 AU - 8.38 AU

Year: 6470 Days

Day: 35.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 18.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 12.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 390

Radius: 14

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 10.35 AU - 14.93 AU

Year: 13823 Days

Day: 6.4 Hours

Environment

Temp: -157 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 104,719,929 km

• M1: 193,280 km (0.043 R)
• M2: 771,775 km (0.041 R)
• M3: 1,275,771 km (0.114 R)
• M4: 1,988,006 km (0.094 R)
• M5: 2,543,313 km (0.105 R)
• M6: 3,659,762 km (0.115 R)
• M7: 4,955,579 km (0.118 R)
• M8: 7,121,158 km (0.118 R)
• M9: 8,987,092 km (0.06 R)
• M10: 10,160,837 km (0.081 R)
• M11: 10,891,174 km (0.101 R)
• M12: 13,294,464 km (0.115 R)
• M13: 15,014,839 km (0.077 R)
• M14: 21,399,377 km (0.097 R)
• M15: 22,688,013 km (0.049 R)
• M16: 26,087,475 km (0.112 R)
• M17: 35,865,940 km (0.063 R)

Planet 8 - Gas Giant

Semi-Major Axis: 15.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.3

Radius: 11.1

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 14.06 AU - 17.68 AU

Year: 19447 Days

Day: 9.4 Hours

Environment

Temp: -176 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 104,719,929 km

• M1: 139,425 km (0.05 R)
• M2: 1,225,955 km (0.072 R)
• M3: 1,681,181 km (0.112 R)
• M4: 2,267,605 km (0.108 R)
• M5: 3,323,915 km (0.088 R)
• M6: 3,741,293 km (0.062 R)
• M7: 5,381,035 km (0.076 R)
• M8: 6,224,767 km (0.107 R)
• M9: 7,411,677 km (0.033 R)
• M10: 8,598,886 km (0.099 R)
• M11: 10,501,322 km (0.117 R)
• M12: 10,890,575 km (0.104 R)
• M13: 11,816,736 km (0.108 R)
• M14: 13,174,785 km (0.096 R)
• M15: 13,825,386 km (0.038 R)
• M16: 15,120,605 km (0.06 R)
• M17: 15,979,297 km (0.12 R)
• M18: 17,404,964 km (0.088 R)
• M19: 20,421,755 km (0.069 R)
• M20: 22,463,467 km (0.094 R)
• M21: 33,054,697 km (0.092 R)
• M22: 39,086,932 km (0.111 R)
• M23: 46,258,654 km (0.068 R)
• M24: 48,370,826 km (0.044 R)
• M25: 49,761,937 km (0.106 R)
• M26: 55,426,609 km (0.082 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 955.1

Radius: 6.9

Gravity: 20.06 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 19.28 AU - 20.56 AU

Year: 27347 Days

Day: 18.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 104,719,929 km

• M1: 85,869 km (0.087 R)
• M2: 675,883 km (0.098 R)
• M3: 2,055,176 km (0.102 R)
• M4: 3,387,494 km (0.099 R)
• M5: 5,343,038 km (0.042 R)
• M6: 6,010,543 km (0.111 R)
• M7: 7,673,024 km (0.077 R)
• M8: 11,158,655 km (0.1 R)
• M9: 13,243,750 km (0.107 R)
• M10: 16,653,684 km (0.107 R)
• M11: 26,624,831 km (0.084 R)
• M12: 27,131,070 km (0.108 R)
• M13: 30,031,174 km (0.111 R)
• M14: 40,124,842 km (0.105 R)
• M15: 41,125,801 km (0.094 R)
• M16: 42,830,768 km (0.074 R)
• M17: 48,415,256 km (0.116 R)
• M18: 72,859,549 km (0.065 R)
• M19: 77,385,632 km (0.105 R)
• M20: 81,563,153 km (0.059 R)
• M21: 86,439,744 km (0.075 R)
• M22: 88,668,004 km (0.106 R)

Kuiper Belt

Range: 35.6 - 51.6 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 247 - 14,271 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit