🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 0.42 AU - 0.6 AU

Year: 239 Days

Day: 42.2 Hours

Environment

Temp: -107 °C

Axial Tilt: 22 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.1

Radius: 9.6

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.89 AU - 1.07 AU

Year: 636 Days

Day: 14.8 Hours

Environment

Temp: -156 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 59,641,031 km

• M1: 119,678 km (0.115 R)
• M2: 622,178 km (0.052 R)
• M3: 1,016,966 km (0.071 R)
• M4: 1,510,340 km (0.073 R)
• M5: 2,002,068 km (0.076 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 907.5

Radius: 12.7

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.8 AU - 1.2 AU

Year: 656 Days

Day: 7.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 59,641,031 km

• M1: 157,975 km (0.033 R)
• M2: 687,851 km (0.1 R)
• M3: 1,116,748 km (0.07 R)
• M4: 1,690,007 km (0.086 R)
• M5: 2,340,608 km (0.103 R)
• M6: 2,967,423 km (0.055 R)
• M7: 3,619,371 km (0.093 R)
• M8: 4,809,123 km (0.05 R)
• M9: 5,301,449 km (0.084 R)
• M10: 6,918,602 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.9

Radius: 13.4

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.99 AU - 1.39 AU

Year: 852 Days

Day: 11.6 Hours

Environment

Temp: -171 °C

Axial Tilt: 84.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 59,641,031 km

• M1: 166,652 km (0.105 R)
• M2: 599,738 km (0.118 R)
• M3: 1,754,783 km (0.092 R)
• M4: 2,508,607 km (0.11 R)
• M5: 3,211,717 km (0.089 R)
• M6: 3,755,655 km (0.111 R)
• M7: 4,376,486 km (0.06 R)
• M8: 5,047,731 km (0.101 R)
• M9: 6,617,761 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.7

Radius: 10.6

Gravity: 7.07 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 3.01 AU - 4.63 AU

Year: 4898 Days

Day: 8 Hours

Environment

Temp: -214 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 59,641,031 km

• M1: 188,344 km (0.105 R)
• M2: 601,383 km (0.102 R)
• M3: 1,292,974 km (0.068 R)
• M4: 1,659,639 km (0.058 R)
• M5: 2,171,413 km (0.072 R)
• M6: 3,775,701 km (0.097 R)
• M7: 4,217,164 km (0.031 R)
• M8: 4,957,524 km (0.069 R)
• M9: 5,373,406 km (0.031 R)
• M10: 6,696,150 km (0.118 R)
• M11: 8,339,333 km (0.089 R)
• M12: 10,148,271 km (0.08 R)
• M13: 10,958,792 km (0.033 R)
• M14: 15,554,887 km (0.077 R)
• M15: 16,327,860 km (0.115 R)
• M16: 16,754,662 km (0.1 R)
• M17: 19,337,470 km (0.114 R)
• M18: 22,623,237 km (0.093 R)
• M19: 23,848,444 km (0.108 R)
• M20: 27,962,236 km (0.113 R)
• M21: 30,095,352 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 772.4

Radius: 10.6

Gravity: 6.87 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 3.87 AU - 4.27 AU

Year: 5386 Days

Day: 14.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 173 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 59,641,031 km

• M1: 131,796 km (0.084 R)
• M2: 547,977 km (0.069 R)
• M3: 917,633 km (0.06 R)
• M4: 1,250,638 km (0.06 R)
• M5: 1,894,507 km (0.093 R)
• M6: 2,839,667 km (0.088 R)
• M7: 4,293,459 km (0.093 R)
• M8: 5,634,903 km (0.087 R)
• M9: 6,751,502 km (0.079 R)
• M10: 7,821,126 km (0.092 R)
• M11: 10,248,950 km (0.093 R)
• M12: 12,055,644 km (0.106 R)
• M13: 13,625,075 km (0.044 R)
• M14: 16,289,563 km (0.048 R)
• M15: 16,974,721 km (0.098 R)
• M16: 18,402,932 km (0.075 R)
• M17: 20,765,082 km (0.115 R)
• M18: 21,422,864 km (0.082 R)
• M19: 25,999,212 km (0.108 R)
• M20: 27,367,883 km (0.08 R)
• M21: 29,693,532 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 48.8

Radius: 11.2

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 3.51 AU - 5.63 AU

Year: 6409 Days

Day: 7.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 59,641,031 km

• M1: 139,276 km (0.111 R)
• M2: 632,350 km (0.074 R)
• M3: 1,979,180 km (0.077 R)
• M4: 2,367,237 km (0.025 R)
• M5: 3,542,627 km (0.076 R)
• M6: 4,157,474 km (0.119 R)
• M7: 4,883,323 km (0.044 R)
• M8: 5,738,126 km (0.083 R)
• M9: 6,562,111 km (0.084 R)
• M10: 6,950,018 km (0.053 R)
• M11: 11,311,095 km (0.047 R)
• M12: 13,165,211 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 251

Radius: 5.2

Gravity: 9.28 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 9.3 AU - 12.08 AU

Year: 22929 Days

Day: 19 Hours

Environment

Temp: -237 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 59,641,031 km

• M1: 64,626 km (0.104 R)
• M2: 278,102 km (0.101 R)
• M3: 877,990 km (0.054 R)
• M4: 1,578,706 km (0.106 R)
• M5: 2,128,778 km (0.05 R)
• M6: 2,890,829 km (0.094 R)
• M7: 3,680,856 km (0.116 R)
• M8: 3,877,577 km (0.071 R)
• M9: 4,541,941 km (0.118 R)
• M10: 4,735,670 km (0.103 R)
• M11: 6,653,365 km (0.079 R)
• M12: 7,073,735 km (0.101 R)
• M13: 7,334,484 km (0.094 R)
• M14: 7,646,546 km (0.108 R)
• M15: 8,984,549 km (0.116 R)
• M16: 9,238,865 km (0.041 R)
• M17: 10,527,202 km (0.096 R)
• M18: 11,449,922 km (0.098 R)
• M19: 13,922,625 km (0.117 R)
• M20: 15,103,850 km (0.104 R)
• M21: 18,143,978 km (0.038 R)
• M22: 19,046,352 km (0.104 R)
• M23: 20,324,666 km (0.037 R)
• M24: 22,116,699 km (0.099 R)
• M25: 26,320,698 km (0.099 R)
• M26: 28,445,586 km (0.1 R)
• M27: 29,215,567 km (0.112 R)
• M28: 29,549,768 km (0.095 R)
• M29: 32,079,019 km (0.035 R)
• M30: 34,252,976 km (0.043 R)
• M31: 34,500,411 km (0.108 R)
• M32: 36,137,909 km (0.047 R)
• M33: 38,757,218 km (0.112 R)
• M34: 45,256,348 km (0.055 R)
• M35: 50,182,307 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: 341 - 12,477 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit