🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.9

Radius: 1.72

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.4 AU - 0.64 AU

Year: 246 Days

Day: 42.4 Hours

Environment

Temp: -125 °C

Axial Tilt: 33.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 371.2

Radius: 12.1

Gravity: 2.54 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.71 AU - 1.07 AU

Year: 551 Days

Day: 5 Hours

Environment

Temp: -156 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 55,510,058 km

• M1: 150,645 km (0.031 R)
• M2: 686,505 km (0.108 R)
• M3: 1,117,496 km (0.116 R)
• M4: 1,501,364 km (0.092 R)
• M5: 2,015,083 km (0.051 R)
• M6: 2,473,601 km (0.055 R)
• M7: 3,012,452 km (0.12 R)
• M8: 3,472,915 km (0.049 R)
• M9: 4,071,904 km (0.103 R)
• M10: 4,480,606 km (0.081 R)
• M11: 4,901,724 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 472.5

Radius: 14.9

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.89 AU - 1.39 AU

Year: 798 Days

Day: 9.7 Hours

Environment

Temp: -167 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 55,510,058 km

• M1: 185,352 km (0.078 R)
• M2: 665,112 km (0.042 R)
• M3: 1,161,179 km (0.086 R)
• M4: 1,650,663 km (0.096 R)
• M5: 2,350,033 km (0.078 R)
• M6: 2,872,130 km (0.062 R)
• M7: 3,618,174 km (0.11 R)
• M8: 4,275,507 km (0.077 R)
• M9: 4,844,727 km (0.078 R)
• M10: 5,850,025 km (0.092 R)
• M11: 6,333,226 km (0.119 R)
• M12: 7,648,042 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 928.6

Radius: 11.7

Gravity: 6.78 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.29 AU - 1.35 AU

Year: 995 Days

Day: 9.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 55,510,058 km

• M1: 145,559 km (0.063 R)
• M2: 583,581 km (0.095 R)
• M3: 1,071,121 km (0.111 R)
• M4: 1,501,065 km (0.098 R)
• M5: 2,283,163 km (0.111 R)
• M6: 2,697,848 km (0.097 R)
• M7: 3,219,346 km (0.029 R)
• M8: 3,619,072 km (0.113 R)
• M9: 4,068,912 km (0.099 R)
• M10: 5,420,230 km (0.051 R)
• M11: 5,924,375 km (0.085 R)
• M12: 6,390,821 km (0.053 R)
• M13: 7,099,915 km (0.058 R)
• M14: 9,219,418 km (0.1 R)
• M15: 9,755,876 km (0.092 R)
• M16: 10,344,693 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.8

Radius: 13.6

Gravity: 4.23 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.48 AU - 1.56 AU

Year: 1229 Days

Day: 11.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,510,058 km

• M1: 169,494 km (0.102 R)
• M2: 600,336 km (0.103 R)
• M3: 1,350,869 km (0.11 R)
• M4: 2,050,987 km (0.099 R)
• M5: 3,312,994 km (0.064 R)
• M6: 3,861,121 km (0.057 R)
• M7: 7,232,907 km (0.106 R)
• M8: 7,996,605 km (0.111 R)
• M9: 9,378,440 km (0.061 R)
• M10: 11,496,148 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602.5

Radius: 14.2

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.66 AU - 1.98 AU

Year: 1611 Days

Day: 10 Hours

Environment

Temp: -185 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 55,510,058 km

• M1: 176,525 km (0.101 R)
• M2: 641,476 km (0.051 R)
• M3: 1,228,647 km (0.059 R)
• M4: 1,784,553 km (0.111 R)
• M5: 2,277,927 km (0.059 R)
• M6: 2,741,082 km (0.084 R)
• M7: 3,580,176 km (0.063 R)
• M8: 4,248,729 km (0.092 R)
• M9: 6,893,769 km (0.097 R)
• M10: 7,440,848 km (0.095 R)
• M11: 8,301,784 km (0.094 R)
• M12: 10,024,404 km (0.09 R)
• M13: 10,970,311 km (0.085 R)
• M14: 11,573,041 km (0.103 R)
• M15: 12,652,539 km (0.051 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.3

Radius: 15

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 2.19 AU - 3.01 AU

Year: 2750 Days

Day: 14.2 Hours

Environment

Temp: -188 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 55,510,058 km

• M1: 186,549 km (0.112 R)
• M2: 798,703 km (0.103 R)
• M3: 1,782,010 km (0.071 R)
• M4: 2,409,124 km (0.114 R)
• M5: 3,015,145 km (0.117 R)
• M6: 3,798,888 km (0.097 R)
• M7: 4,302,734 km (0.042 R)
• M8: 5,446,559 km (0.103 R)
• M9: 6,063,800 km (0.07 R)
• M10: 7,047,705 km (0.109 R)
• M11: 7,687,835 km (0.086 R)
• M12: 8,703,455 km (0.08 R)
• M13: 10,763,118 km (0.047 R)
• M14: 12,034,251 km (0.071 R)
• M15: 13,175,832 km (0.085 R)
• M16: 13,679,977 km (0.097 R)
• M17: 16,188,734 km (0.074 R)
• M18: 17,360,534 km (0.113 R)
• M19: 18,023,103 km (0.105 R)
• M20: 20,293,849 km (0.083 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 985.4

Radius: 12.1

Gravity: 6.73 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 2.81 AU - 4.19 AU

Year: 4295 Days

Day: 8.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 55,510,058 km

• M1: 150,645 km (0.092 R)
• M2: 617,989 km (0.085 R)
• M3: 1,431,203 km (0.092 R)
• M4: 3,095,479 km (0.065 R)
• M5: 3,691,028 km (0.11 R)
• M6: 5,708,655 km (0.092 R)
• M7: 6,131,418 km (0.073 R)
• M8: 7,246,222 km (0.093 R)
• M9: 7,815,442 km (0.101 R)
• M10: 8,414,431 km (0.052 R)
• M11: 11,977,703 km (0.033 R)
• M12: 15,727,972 km (0.083 R)
• M13: 18,449,307 km (0.103 R)
• M14: 19,444,881 km (0.11 R)
• M15: 21,040,342 km (0.113 R)
• M16: 23,710,515 km (0.094 R)
• M17: 24,886,952 km (0.046 R)
• M18: 29,984,350 km (0.025 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 659.6

Radius: 8

Gravity: 10.31 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 5.73 AU - 8.69 AU

Year: 12700 Days

Day: 23.2 Hours

Environment

Temp: -228 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 55,510,058 km

• M1: 99,483 km (0.106 R)
• M2: 954,883 km (0.117 R)
• M3: 1,355,357 km (0.051 R)
• M4: 2,072,678 km (0.095 R)
• M5: 3,726,184 km (0.073 R)
• M6: 4,504,990 km (0.03 R)
• M7: 5,250,436 km (0.067 R)
• M8: 9,623,481 km (0.113 R)
• M9: 10,524,061 km (0.109 R)
• M10: 12,068,210 km (0.1 R)
• M11: 12,430,835 km (0.058 R)
• M12: 13,562,693 km (0.095 R)
• M13: 14,220,325 km (0.075 R)
• M14: 15,885,349 km (0.12 R)
• M15: 16,989,830 km (0.071 R)
• M16: 18,223,265 km (0.057 R)
• M17: 18,781,414 km (0.042 R)
• M18: 24,041,425 km (0.072 R)
• M19: 24,615,881 km (0.062 R)
• M20: 25,004,087 km (0.067 R)
• M21: 28,790,110 km (0.103 R)
• M22: 29,985,397 km (0.091 R)
• M23: 31,213,446 km (0.116 R)
• M24: 33,888,854 km (0.078 R)
• M25: 35,837,816 km (0.031 R)
• M26: 36,336,425 km (0.084 R)
• M27: 36,839,672 km (0.076 R)
• M28: 38,247,688 km (0.085 R)
• M29: 39,030,683 km (0.09 R)
• M30: 41,443,697 km (0.087 R)
• M31: 45,246,923 km (0.101 R)
• M32: 47,607,129 km (0.108 R)
• M33: 47,907,821 km (0.088 R)
• M34: 48,665,085 km (0.074 R)
• M35: 51,141,827 km (0.073 R)
• M36: 54,518,700 km (0.085 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 209 - 13,700 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit