🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.53

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.56 AU - 0.72 AU

Year: 331 Days

Day: 46.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 39.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,920,445 km

• M1: 77,043 km (0.071 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.9

Radius: 12.2

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.66 AU - 0.78 AU

Year: 394 Days

Day: 7.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 73,920,445 km

• M1: 151,692 km (0.103 R)
• M2: 558,150 km (0.11 R)
• M3: 988,393 km (0.05 R)
• M4: 1,568,534 km (0.098 R)
• M5: 2,132,069 km (0.058 R)
• M6: 3,095,778 km (0.041 R)
• M7: 3,804,124 km (0.119 R)
• M8: 5,022,001 km (0.067 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.1

Radius: 14.9

Gravity: 3.96 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.72 AU - 0.84 AU

Year: 445 Days

Day: 13.4 Hours

Environment

Temp: -144 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 73,920,445 km

• M1: 187,147 km (0.045 R)
• M2: 662,569 km (0.073 R)
• M3: 1,634,058 km (0.065 R)
• M4: 2,104,094 km (0.117 R)
• M5: 2,575,776 km (0.053 R)
• M6: 3,084,858 km (0.096 R)
• M7: 3,548,162 km (0.101 R)
• M8: 4,141,168 km (0.072 R)
• M9: 4,632,747 km (0.083 R)
• M10: 5,147,214 km (0.065 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416

Radius: 11.5

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.67 AU - 0.89 AU

Year: 445 Days

Day: 14.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,920,445 km

• M1: 143,016 km (0.073 R)
• M2: 622,028 km (0.11 R)
• M3: 1,175,839 km (0.107 R)
• M4: 1,763,011 km (0.087 R)
• M5: 2,283,013 km (0.088 R)
• M6: 3,057,631 km (0.09 R)
• M7: 3,449,577 km (0.104 R)
• M8: 3,875,183 km (0.058 R)
• M9: 4,456,670 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 746.6

Radius: 12

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 1.11 AU - 1.19 AU

Year: 796 Days

Day: 8 Hours

Environment

Temp: -161 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 73,920,445 km

• M1: 159,621 km (0.07 R)
• M2: 653,743 km (0.107 R)
• M3: 1,075,758 km (0.096 R)
• M4: 1,571,226 km (0.104 R)
• M5: 2,177,696 km (0.109 R)
• M6: 3,614,285 km (0.112 R)
• M7: 4,122,768 km (0.049 R)
• M8: 5,302,945 km (0.027 R)
• M9: 5,684,121 km (0.057 R)
• M10: 6,269,348 km (0.032 R)
• M11: 7,419,755 km (0.12 R)
• M12: 7,897,870 km (0.044 R)
• M13: 8,758,058 km (0.035 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 994.5

Radius: 14.3

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 4.21 AU - 6.05 AU

Year: 7502 Days

Day: 5 Hours

Environment

Temp: -227 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,920,445 km

• M1: 207,193 km (0.096 R)
• M2: 944,411 km (0.119 R)
• M3: 1,668,016 km (0.084 R)
• M4: 2,550,494 km (0.043 R)
• M5: 3,484,733 km (0.09 R)
• M6: 4,636,786 km (0.118 R)
• M7: 5,144,970 km (0.036 R)
• M8: 9,770,835 km (0.086 R)
• M9: 12,606,164 km (0.109 R)
• M10: 13,844,236 km (0.115 R)
• M11: 16,288,515 km (0.114 R)
• M12: 25,699,418 km (0.092 R)
• M13: 26,538,662 km (0.1 R)
• M14: 27,685,928 km (0.104 R)
• M15: 30,285,042 km (0.059 R)
• M16: 34,708,052 km (0.103 R)
• M17: 44,279,025 km (0.048 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 703.5

Radius: 8.3

Gravity: 10.21 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 4.88 AU - 5.82 AU

Year: 7990 Days

Day: 11.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 73,920,445 km

• M1: 103,223 km (0.101 R)
• M2: 576,401 km (0.057 R)
• M3: 1,489,995 km (0.113 R)
• M4: 1,977,385 km (0.094 R)
• M5: 2,364,544 km (0.12 R)
• M6: 2,801,669 km (0.1 R)
• M7: 3,428,933 km (0.106 R)
• M8: 3,714,515 km (0.096 R)
• M9: 5,264,349 km (0.091 R)
• M10: 6,045,400 km (0.075 R)
• M11: 6,901,548 km (0.094 R)
• M12: 7,795,695 km (0.068 R)
• M13: 8,765,089 km (0.075 R)
• M14: 9,301,547 km (0.051 R)
• M15: 9,671,353 km (0.071 R)
• M16: 17,908,810 km (0.087 R)
• M17: 19,214,799 km (0.033 R)
• M18: 19,513,397 km (0.108 R)
• M19: 21,610,759 km (0.086 R)
• M20: 23,682,689 km (0.032 R)
• M21: 24,026,166 km (0.084 R)
• M22: 25,702,859 km (0.053 R)
• M23: 26,431,550 km (0.094 R)
• M24: 26,893,957 km (0.113 R)
• M25: 27,455,996 km (0.076 R)
• M26: 28,410,132 km (0.091 R)
• M27: 29,189,088 km (0.077 R)
• M28: 30,688,208 km (0.032 R)
• M29: 35,046,144 km (0.077 R)
• M30: 38,013,717 km (0.034 R)
• M31: 38,959,474 km (0.09 R)
• M32: 40,285,360 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 849.1

Radius: 7.9

Gravity: 13.61 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 8.33 AU - 9.51 AU

Year: 17201 Days

Day: 23 Hours

Environment

Temp: -237 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 73,920,445 km

• M1: 99,931 km (0.115 R)
• M2: 400,623 km (0.103 R)
• M3: 927,956 km (0.088 R)
• M4: 1,503,459 km (0.083 R)
• M5: 1,974,243 km (0.074 R)
• M6: 3,688,036 km (0.067 R)
• M7: 5,685,617 km (0.115 R)
• M8: 10,418,445 km (0.086 R)
• M9: 11,339,369 km (0.081 R)
• M10: 12,114,436 km (0.046 R)
• M11: 14,501,868 km (0.061 R)
• M12: 16,364,810 km (0.102 R)
• M13: 19,089,735 km (0.103 R)
• M14: 26,856,408 km (0.084 R)
• M15: 27,537,527 km (0.087 R)
• M16: 34,195,979 km (0.098 R)
• M17: 46,401,220 km (0.112 R)
• M18: 61,218,291 km (0.083 R)
• M19: 73,258,077 km (0.103 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 407 - 16,227 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit