🌌 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: 2.81

Radius: 1.51

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.59 AU - 0.87 AU

Year: 226 Days

Day: 30.4 Hours

Environment

Temp: 179 °C

Axial Tilt: 37.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.93 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.07

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.76 AU - 1.1 AU

Year: 324 Days

Day: 36.4 Hours

Environment

Temp: 86 °C

Axial Tilt: 35.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.08

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.91 AU - 1.37 AU

Year: 440 Days

Day: 22.4 Hours

Environment

Temp: 6 °C

Axial Tilt: 9.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 27,538,294 km

• M1: 378,782 km (0.11 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 3.25 AU - 3.83 AU

Year: 2409 Days

Day: 29.5 Hours

Environment

Temp: -103 °C

Axial Tilt: 18.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 5.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228.5

Radius: 10.2

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 3.78 AU - 6.24 AU

Year: 4056 Days

Day: 7.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 27,538,294 km

• M1: 126,859 km (0.119 R)
• M2: 558,898 km (0.079 R)
• M3: 1,447,808 km (0.04 R)
• M4: 2,428,572 km (0.105 R)
• M5: 2,912,072 km (0.102 R)
• M6: 3,994,712 km (0.048 R)
• M7: 4,670,894 km (0.037 R)
• M8: 5,256,121 km (0.11 R)
• M9: 5,914,801 km (0.104 R)
• M10: 6,877,762 km (0.093 R)
• M11: 7,545,567 km (0.119 R)
• M12: 7,972,819 km (0.072 R)
• M13: 8,644,064 km (0.105 R)
• M14: 11,590,993 km (0.102 R)
• M15: 13,533,072 km (0.107 R)
• M16: 13,936,986 km (0.101 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260.6

Radius: 8.1

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 4.16 AU - 6.46 AU

Year: 4425 Days

Day: 10.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 27,538,294 km

• M1: 100,829 km (0.068 R)
• M2: 378,183 km (0.101 R)
• M3: 764,445 km (0.096 R)
• M4: 1,228,199 km (0.093 R)
• M5: 1,630,467 km (0.104 R)
• M6: 2,054,128 km (0.078 R)
• M7: 2,447,272 km (0.106 R)
• M8: 2,922,544 km (0.089 R)
• M9: 4,159,718 km (0.109 R)
• M10: 4,435,427 km (0.077 R)
• M11: 6,494,642 km (0.079 R)
• M12: 8,703,155 km (0.11 R)
• M13: 9,478,371 km (0.115 R)
• M14: 9,920,134 km (0.11 R)
• M15: 11,533,996 km (0.111 R)
• M16: 15,829,699 km (0.096 R)
• M17: 17,361,132 km (0.091 R)
• M18: 17,911,353 km (0.054 R)
• M19: 18,529,940 km (0.111 R)
• M20: 18,988,757 km (0.036 R)
• M21: 19,513,995 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 518.8

Radius: 13.4

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 4.92 AU - 7.18 AU

Year: 5382 Days

Day: 6.1 Hours

Environment

Temp: -143 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 27,538,294 km

• M1: 166,652 km (0.093 R)
• M2: 671,844 km (0.073 R)
• M3: 1,564,195 km (0.089 R)
• M4: 2,019,870 km (0.102 R)
• M5: 2,631,726 km (0.093 R)
• M6: 3,465,883 km (0.102 R)
• M7: 4,024,183 km (0.072 R)
• M8: 4,518,604 km (0.055 R)
• M9: 5,000,907 km (0.071 R)
• M10: 5,545,593 km (0.049 R)
• M11: 6,282,063 km (0.098 R)
• M12: 7,525,820 km (0.068 R)
• M13: 9,815,266 km (0.06 R)
• M14: 11,813,295 km (0.042 R)
• M15: 12,733,621 km (0.066 R)
• M16: 13,186,005 km (0.118 R)
• M17: 17,262,697 km (0.096 R)
• M18: 18,005,001 km (0.083 R)
• M19: 21,189,042 km (0.097 R)
• M20: 22,766,851 km (0.035 R)
• M21: 23,584,553 km (0.102 R)
• M22: 24,344,809 km (0.076 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 586.1

Radius: 9.1

Gravity: 7.08 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 9 AU - 9.64 AU

Year: 10290 Days

Day: 12.9 Hours

Environment

Temp: -172 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 27,538,294 km

• M1: 113,246 km (0.072 R)
• M2: 410,945 km (0.108 R)
• M3: 1,117,945 km (0.113 R)
• M4: 1,531,882 km (0.086 R)
• M5: 3,869,349 km (0.112 R)
• M6: 4,529,076 km (0.1 R)
• M7: 8,369,702 km (0.064 R)
• M8: 8,909,002 km (0.049 R)
• M9: 9,328,624 km (0.108 R)
• M10: 10,927,975 km (0.109 R)
• M11: 16,394,431 km (0.075 R)
• M12: 18,785,902 km (0.09 R)
• M13: 25,159,819 km (0.082 R)
• M14: 26,093,010 km (0.105 R)
• M15: 32,840,323 km (0.11 R)
• M16: 35,324,994 km (0.106 R)
• M17: 37,448,835 km (0.062 R)
• M18: 40,919,805 km (0.12 R)
• M19: 45,552,851 km (0.038 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 84.1

Radius: 11.3

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 9.23 AU - 11.91 AU

Year: 12428 Days

Day: 11.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,538,294 km

• M1: 140,472 km (0.106 R)
• M2: 722,857 km (0.082 R)
• M3: 2,985,076 km (0.101 R)
• M4: 5,403,625 km (0.07 R)
• M5: 8,869,807 km (0.047 R)
• M6: 9,457,577 km (0.092 R)
• M7: 15,357,568 km (0.07 R)
• M8: 18,306,740 km (0.118 R)
• M9: 25,848,268 km (0.11 R)

Kuiper Belt

Range: 30.3 - 54.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 503 - 19,471 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit