🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.23

Radius: 0.56

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.5 AU - 0.62 AU

Year: 275 Days

Day: 15.1 Hours

Environment

Temp: -127 °C

Axial Tilt: 32.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 37,410,812 km

• M1: 26,479 km (0.116 R)
• M2: 248,931 km (0.103 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.53 AU - 0.71 AU

Year: 320 Days

Day: 20.4 Hours

Environment

Temp: -120 °C

Axial Tilt: 46.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 989.1

Radius: 8.3

Gravity: 14.36 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.57 AU - 0.85 AU

Year: 392 Days

Day: 12.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 37,410,812 km

• M1: 103,223 km (0.119 R)
• M2: 385,514 km (0.107 R)
• M3: 809,624 km (0.085 R)
• M4: 1,297,612 km (0.085 R)
• M5: 1,701,227 km (0.092 R)
• M6: 2,004,163 km (0.038 R)
• M7: 2,324,302 km (0.066 R)
• M8: 2,793,890 km (0.082 R)
• M9: 3,102,660 km (0.116 R)
• M10: 3,434,318 km (0.115 R)
• M11: 3,789,613 km (0.103 R)
• M12: 4,169,293 km (0.108 R)
• M13: 4,649,203 km (0.087 R)
• M14: 5,263,302 km (0.078 R)
• M15: 6,073,973 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 577.7

Radius: 12

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 4.48 AU - 5.78 AU

Year: 7622 Days

Day: 9.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 37,410,812 km

• M1: 151,842 km (0.091 R)
• M2: 723,306 km (0.06 R)
• M3: 1,721,871 km (0.072 R)
• M4: 2,230,953 km (0.073 R)
• M5: 2,724,476 km (0.101 R)
• M6: 3,121,060 km (0.038 R)
• M7: 4,939,422 km (0.088 R)
• M8: 5,441,623 km (0.038 R)
• M9: 10,062,551 km (0.06 R)
• M10: 11,776,644 km (0.117 R)
• M11: 14,492,743 km (0.059 R)
• M12: 14,972,802 km (0.114 R)
• M13: 18,079,800 km (0.076 R)
• M14: 18,566,293 km (0.08 R)
• M15: 23,183,032 km (0.073 R)
• M16: 23,592,332 km (0.118 R)
• M17: 24,173,670 km (0.104 R)
• M18: 26,150,755 km (0.084 R)
• M19: 29,746,190 km (0.046 R)
• M20: 31,411,962 km (0.1 R)
• M21: 34,607,971 km (0.071 R)
• M22: 35,901,395 km (0.06 R)
• M23: 36,892,480 km (0.045 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 110.4

Radius: 6

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 6.64 AU - 8.06 AU

Year: 13072 Days

Day: 18.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 37,410,812 km

• M1: 74,949 km (0.096 R)
• M2: 284,685 km (0.109 R)
• M3: 865,274 km (0.12 R)
• M4: 1,075,010 km (0.025 R)
• M5: 3,602,018 km (0.073 R)
• M6: 3,893,883 km (0.108 R)
• M7: 4,919,227 km (0.057 R)
• M8: 5,479,920 km (0.105 R)
• M9: 5,745,605 km (0.108 R)
• M10: 8,268,424 km (0.113 R)
• M11: 9,348,072 km (0.116 R)
• M12: 10,294,877 km (0.108 R)
• M13: 15,297,280 km (0.07 R)
• M14: 15,765,671 km (0.104 R)
• M15: 16,854,444 km (0.079 R)
• M16: 18,057,061 km (0.109 R)
• M17: 19,862,857 km (0.114 R)
• M18: 20,279,936 km (0.076 R)
• M19: 20,845,117 km (0.115 R)
• M20: 21,131,597 km (0.106 R)
• M21: 26,246,198 km (0.114 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 154.1

Radius: 3.5

Gravity: 12.58 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 8.54 AU - 8.68 AU

Year: 16573 Days

Day: 15.8 Hours

Environment

Temp: -229 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 37,410,812 km

• M1: 45,478 km (0.063 R)
• M2: 520,601 km (0.082 R)
• M3: 929,302 km (0.116 R)
• M4: 1,962,275 km (0.052 R)
• M5: 2,407,329 km (0.056 R)
• M6: 3,196,458 km (0.079 R)
• M7: 3,331,545 km (0.092 R)
• M8: 5,911,360 km (0.116 R)
• M9: 7,796,891 km (0.099 R)
• M10: 12,364,713 km (0.104 R)
• M11: 15,843,910 km (0.041 R)
• M12: 16,237,203 km (0.088 R)
• M13: 16,503,039 km (0.091 R)
• M14: 19,546,607 km (0.084 R)
• M15: 26,807,041 km (0.12 R)
• M16: 32,008,708 km (0.103 R)
• M17: 32,636,720 km (0.109 R)
• M18: 37,035,646 km (0.073 R)
• M19: 37,844,073 km (0.098 R)
• M20: 38,782,201 km (0.117 R)
• M21: 38,900,533 km (0.069 R)
• M22: 40,339,515 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 95

Radius: 5.6

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 8.81 AU - 9.73 AU

Year: 18515 Days

Day: 22.9 Hours

Environment

Temp: -239 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,410,812 km

• M1: 73,453 km (0.08 R)
• M2: 382,073 km (0.093 R)
• M3: 2,895,916 km (0.092 R)
• M4: 5,199,872 km (0.075 R)
• M5: 10,611,127 km (0.092 R)
• M6: 12,768,178 km (0.112 R)
• M7: 15,139,903 km (0.05 R)
• M8: 16,140,114 km (0.034 R)
• M9: 18,620,447 km (0.083 R)
• M10: 20,283,975 km (0.053 R)
• M11: 20,809,363 km (0.095 R)
• M12: 27,020,068 km (0.12 R)
• M13: 35,214,890 km (0.038 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: 395 - 12,114 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit