🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.97

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.49 AU - 0.81 AU

Year: 338 Days

Day: 21.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 26.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 30,793,596 km

• M1: 563,236 km (0.074 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 520.9

Radius: 9.9

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.8 AU - 0.86 AU

Year: 488 Days

Day: 10.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 30,793,596 km

• M1: 124,017 km (0.101 R)
• M2: 465,100 km (0.116 R)
• M3: 775,815 km (0.118 R)
• M4: 1,165,966 km (0.09 R)
• M5: 1,644,081 km (0.066 R)
• M6: 2,010,745 km (0.098 R)
• M7: 2,451,012 km (0.117 R)
• M8: 3,052,395 km (0.119 R)
• M9: 3,749,521 km (0.114 R)
• M10: 4,844,877 km (0.04 R)
• M11: 5,540,956 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 740.4

Radius: 13.3

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 1.81 AU - 2.27 AU

Year: 1881 Days

Day: 10 Hours

Environment

Temp: -194 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 30,793,596 km

• M1: 165,455 km (0.069 R)
• M2: 636,988 km (0.057 R)
• M3: 1,150,557 km (0.108 R)
• M4: 1,641,537 km (0.058 R)
• M5: 2,518,480 km (0.103 R)
• M6: 3,975,264 km (0.117 R)
• M7: 4,616,441 km (0.034 R)
• M8: 5,371,312 km (0.055 R)
• M9: 6,132,017 km (0.066 R)
• M10: 6,936,404 km (0.092 R)
• M11: 14,486,011 km (0.073 R)
• M12: 15,676,211 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 995.5

Radius: 9

Gravity: 12.29 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.79 AU - 2.81 AU

Year: 2252 Days

Day: 6.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 30,793,596 km

• M1: 111,899 km (0.084 R)
• M2: 522,994 km (0.101 R)
• M3: 843,283 km (0.092 R)
• M4: 1,802,804 km (0.118 R)
• M5: 2,281,068 km (0.101 R)
• M6: 2,794,488 km (0.117 R)
• M7: 3,697,611 km (0.114 R)
• M8: 5,061,943 km (0.119 R)
• M9: 5,910,313 km (0.099 R)
• M10: 6,204,123 km (0.119 R)
• M11: 7,026,163 km (0.098 R)
• M12: 8,015,454 km (0.112 R)
• M13: 11,915,620 km (0.098 R)
• M14: 13,409,504 km (0.049 R)
• M15: 13,871,762 km (0.094 R)
• M16: 15,523,173 km (0.114 R)
• M17: 16,871,498 km (0.111 R)
• M18: 18,750,597 km (0.116 R)
• M19: 19,799,877 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.8

Radius: 11.5

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 2.28 AU - 3.12 AU

Year: 2865 Days

Day: 13.3 Hours

Environment

Temp: -190 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 30,793,596 km

• M1: 143,165 km (0.098 R)
• M2: 915,090 km (0.09 R)
• M3: 1,374,206 km (0.08 R)
• M4: 2,127,731 km (0.118 R)
• M5: 2,673,015 km (0.092 R)
• M6: 3,746,828 km (0.117 R)
• M7: 5,391,358 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.9

Radius: 9.6

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.91 AU - 3.53 AU

Year: 3731 Days

Day: 12.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 30,793,596 km

• M1: 119,529 km (0.076 R)
• M2: 491,429 km (0.115 R)
• M3: 1,172,249 km (0.108 R)
• M4: 1,580,053 km (0.042 R)
• M5: 2,375,465 km (0.084 R)
• M6: 5,235,327 km (0.088 R)
• M7: 5,675,594 km (0.118 R)
• M8: 6,121,395 km (0.082 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 219.5

Radius: 11.4

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 2.98 AU - 3.8 AU

Year: 4030 Days

Day: 12.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 30,793,596 km

• M1: 142,716 km (0.103 R)
• M2: 635,641 km (0.114 R)
• M3: 997,967 km (0.094 R)
• M4: 1,419,983 km (0.072 R)
• M5: 1,836,314 km (0.089 R)
• M6: 3,015,743 km (0.091 R)
• M7: 3,481,890 km (0.07 R)
• M8: 4,774,117 km (0.05 R)
• M9: 5,130,908 km (0.093 R)
• M10: 5,529,586 km (0.114 R)
• M11: 5,948,909 km (0.096 R)
• M12: 8,342,325 km (0.069 R)
• M13: 9,028,979 km (0.071 R)
• M14: 9,859,547 km (0.047 R)
• M15: 10,366,983 km (0.051 R)
• M16: 11,553,144 km (0.108 R)
• M17: 12,365,012 km (0.104 R)
• M18: 15,556,982 km (0.08 R)
• M19: 16,245,581 km (0.116 R)
• M20: 17,005,987 km (0.079 R)
• M21: 17,736,772 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.9

Radius: 13.9

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 3.19 AU - 5.31 AU

Year: 5657 Days

Day: 13.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 30,793,596 km

• M1: 172,935 km (0.118 R)
• M2: 1,958,835 km (0.106 R)
• M3: 3,091,590 km (0.104 R)
• M4: 3,897,623 km (0.109 R)
• M5: 4,518,604 km (0.095 R)
• M6: 6,087,586 km (0.076 R)
• M7: 7,032,297 km (0.025 R)
• M8: 7,727,478 km (0.056 R)
• M9: 9,001,753 km (0.111 R)
• M10: 9,470,892 km (0.116 R)
• M11: 10,929,321 km (0.078 R)
• M12: 11,463,834 km (0.116 R)
• M13: 13,391,104 km (0.092 R)
• M14: 14,116,953 km (0.089 R)
• M15: 15,165,335 km (0.051 R)
• M16: 17,416,932 km (0.103 R)
• M17: 18,013,080 km (0.099 R)
• M18: 19,386,538 km (0.078 R)
• M19: 28,214,607 km (0.109 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.3

Radius: 9.7

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 3.87 AU - 5.57 AU

Year: 6621 Days

Day: 8.1 Hours

Environment

Temp: -212 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 30,793,596 km

• M1: 120,576 km (0.066 R)
• M2: 465,399 km (0.067 R)
• M3: 853,306 km (0.095 R)
• M4: 1,284,148 km (0.105 R)
• M5: 1,624,483 km (0.118 R)
• M6: 2,173,358 km (0.07 R)
• M7: 2,971,911 km (0.065 R)
• M8: 3,619,969 km (0.078 R)
• M9: 5,279,758 km (0.1 R)
• M10: 5,891,164 km (0.075 R)
• M11: 7,430,825 km (0.107 R)
• M12: 9,140,879 km (0.075 R)
• M13: 9,807,786 km (0.115 R)
• M14: 10,914,361 km (0.073 R)
• M15: 11,285,364 km (0.098 R)
• M16: 11,809,406 km (0.114 R)
• M17: 12,803,633 km (0.07 R)
• M18: 13,426,558 km (0.099 R)
• M19: 14,453,697 km (0.108 R)
• M20: 15,186,278 km (0.113 R)
• M21: 16,725,192 km (0.101 R)
• M22: 18,235,831 km (0.114 R)
• M23: 21,671,346 km (0.109 R)
• M24: 22,555,769 km (0.038 R)
• M25: 26,005,795 km (0.113 R)
• M26: 29,078,236 km (0.051 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 494 - 16,813 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit