🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.46

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.57 AU - 0.67 AU

Year: 310 Days

Day: 36 Hours

Environment

Temp: -133 °C

Axial Tilt: 2.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 65,738,961 km

• M1: 674,986 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 529.2

Radius: 12.4

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.67 AU - 0.73 AU

Year: 372 Days

Day: 9.6 Hours

Environment

Temp: -138 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 65,738,961 km

• M1: 154,235 km (0.065 R)
• M2: 587,022 km (0.058 R)
• M3: 1,129,763 km (0.108 R)
• M4: 1,544,897 km (0.101 R)
• M5: 2,086,890 km (0.035 R)
• M6: 2,688,124 km (0.112 R)
• M7: 3,123,304 km (0.1 R)
• M8: 3,640,315 km (0.092 R)
• M9: 4,529,973 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 292.8

Radius: 11.9

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.67 AU - 0.97 AU

Year: 472 Days

Day: 13.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 44.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 65,738,961 km

• M1: 148,551 km (0.093 R)
• M2: 547,827 km (0.094 R)
• M3: 1,057,956 km (0.1 R)
• M4: 1,546,842 km (0.104 R)
• M5: 1,939,836 km (0.084 R)
• M6: 2,417,651 km (0.113 R)
• M7: 2,904,443 km (0.037 R)
• M8: 3,412,327 km (0.103 R)
• M9: 3,918,417 km (0.069 R)
• M10: 4,356,440 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 583.3

Radius: 13.5

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.16 AU - 1.26 AU

Year: 846 Days

Day: 6.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 65,738,961 km

• M1: 169,494 km (0.054 R)
• M2: 613,650 km (0.094 R)
• M3: 1,159,982 km (0.063 R)
• M4: 1,733,690 km (0.105 R)
• M5: 2,195,199 km (0.1 R)
• M6: 3,733,963 km (0.119 R)
• M7: 4,338,787 km (0.073 R)
• M8: 4,766,637 km (0.107 R)
• M9: 5,498,919 km (0.111 R)
• M10: 6,769,603 km (0.09 R)
• M11: 8,153,682 km (0.098 R)
• M12: 8,629,254 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 755.9

Radius: 10.9

Gravity: 6.36 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.25 AU - 1.26 AU

Year: 889 Days

Day: 8.7 Hours

Environment

Temp: -167 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 65,738,961 km

• M1: 135,536 km (0.078 R)
• M2: 482,004 km (0.075 R)
• M3: 840,890 km (0.111 R)
• M4: 1,366,128 km (0.078 R)
• M5: 1,918,144 km (0.07 R)
• M6: 2,442,784 km (0.052 R)
• M7: 2,919,552 km (0.104 R)
• M8: 3,317,333 km (0.101 R)
• M9: 4,109,603 km (0.064 R)
• M10: 4,949,894 km (0.116 R)
• M11: 5,499,068 km (0.085 R)
• M12: 6,652,468 km (0.115 R)
• M13: 7,250,710 km (0.101 R)
• M14: 7,735,257 km (0.1 R)
• M15: 9,602,987 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 127.7

Radius: 13.7

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.75 AU - 4.61 AU

Year: 5434 Days

Day: 9.2 Hours

Environment

Temp: -202 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 65,738,961 km

• M1: 171,589 km (0.106 R)
• M2: 734,974 km (0.116 R)
• M3: 1,361,490 km (0.095 R)
• M4: 2,021,815 km (0.052 R)
• M5: 4,559,145 km (0.119 R)
• M6: 11,263,224 km (0.09 R)
• M7: 14,605,839 km (0.087 R)
• M8: 16,351,945 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 675.4

Radius: 11.8

Gravity: 4.85 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 4.79 AU - 6.61 AU

Year: 8653 Days

Day: 12.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 65,738,961 km

• M1: 147,055 km (0.05 R)
• M2: 600,187 km (0.058 R)
• M3: 1,034,918 km (0.062 R)
• M4: 1,420,581 km (0.116 R)
• M5: 1,950,607 km (0.074 R)
• M6: 2,629,781 km (0.046 R)
• M7: 3,391,234 km (0.078 R)
• M8: 4,028,671 km (0.106 R)
• M9: 4,744,496 km (0.077 R)
• M10: 6,757,934 km (0.075 R)
• M11: 8,354,293 km (0.114 R)
• M12: 9,195,183 km (0.094 R)
• M13: 10,091,573 km (0.116 R)
• M14: 11,894,078 km (0.081 R)
• M15: 13,662,026 km (0.083 R)
• M16: 17,926,762 km (0.078 R)
• M17: 19,627,241 km (0.09 R)
• M18: 20,321,076 km (0.096 R)
• M19: 20,792,608 km (0.056 R)
• M20: 22,334,364 km (0.105 R)
• M21: 23,346,543 km (0.103 R)
• M22: 23,864,002 km (0.09 R)
• M23: 24,477,353 km (0.041 R)
• M24: 29,069,409 km (0.105 R)
• M25: 30,582,442 km (0.114 R)
• M26: 31,098,256 km (0.118 R)
• M27: 31,515,185 km (0.12 R)
• M28: 32,573,590 km (0.039 R)
• M29: 34,538,408 km (0.092 R)
• M30: 35,777,228 km (0.104 R)
• M31: 36,580,868 km (0.12 R)
• M32: 39,306,541 km (0.091 R)
• M33: 40,656,662 km (0.114 R)
• M34: 42,164,609 km (0.063 R)
• M35: 42,547,430 km (0.034 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 528.9

Radius: 3.3

Gravity: 48.57 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 6.47 AU - 8.59 AU

Year: 13138 Days

Day: 18.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 65,738,961 km

• M1: 44,730 km (0.058 R)
• M2: 154,235 km (0.104 R)
• M3: 649,404 km (0.109 R)
• M4: 760,556 km (0.11 R)
• M5: 874,549 km (0.094 R)
• M6: 1,021,903 km (0.055 R)
• M7: 1,507,199 km (0.083 R)
• M8: 2,131,022 km (0.038 R)
• M9: 2,776,237 km (0.086 R)
• M10: 3,191,671 km (0.036 R)
• M11: 4,748,536 km (0.09 R)
• M12: 11,482,983 km (0.114 R)
• M13: 15,056,876 km (0.106 R)
• M14: 17,965,208 km (0.115 R)
• M15: 18,667,570 km (0.096 R)
• M16: 23,178,395 km (0.03 R)
• M17: 23,638,109 km (0.12 R)
• M18: 24,957,413 km (0.047 R)
• M19: 28,573,941 km (0.114 R)
• M20: 29,422,460 km (0.109 R)
• M21: 29,961,312 km (0.116 R)
• M22: 42,436,727 km (0.11 R)
• M23: 45,231,215 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 312.8

Radius: 6.9

Gravity: 6.57 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 9.59 AU - 12.77 AU

Year: 23768 Days

Day: 21.9 Hours

Environment

Temp: -228 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 65,738,961 km

• M1: 93,050 km (0.062 R)
• M2: 354,697 km (0.107 R)
• M3: 1,754,185 km (0.104 R)
• M4: 3,073,039 km (0.101 R)
• M5: 4,512,021 km (0.066 R)
• M6: 5,415,742 km (0.05 R)
• M7: 7,715,660 km (0.053 R)
• M8: 9,158,382 km (0.111 R)
• M9: 10,539,170 km (0.109 R)
• M10: 10,949,367 km (0.115 R)
• M11: 11,739,543 km (0.108 R)
• M12: 12,244,287 km (0.099 R)
• M13: 13,776,318 km (0.073 R)
• M14: 14,196,090 km (0.044 R)
• M15: 15,061,214 km (0.085 R)
• M16: 27,672,614 km (0.057 R)
• M17: 29,593,900 km (0.057 R)
• M18: 44,370,579 km (0.081 R)
• M19: 46,996,171 km (0.071 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 312 - 10,913 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit