🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.99

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.42 AU - 0.64 AU

Year: 249 Days

Day: 30.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 16.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 303.3

Radius: 8.8

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.71 AU - 0.79 AU

Year: 419 Days

Day: 5.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 70,221,300 km

• M1: 109,506 km (0.107 R)
• M2: 419,024 km (0.072 R)
• M3: 728,242 km (0.115 R)
• M4: 1,210,546 km (0.095 R)
• M5: 1,559,408 km (0.118 R)
• M6: 2,019,721 km (0.071 R)
• M7: 2,294,831 km (0.119 R)
• M8: 3,761,788 km (0.075 R)
• M9: 4,046,473 km (0.062 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 398

Radius: 15

Gravity: 1.77 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.7 AU - 0.88 AU

Year: 453 Days

Day: 14.2 Hours

Environment

Temp: -138 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 70,221,300 km

• M1: 186,549 km (0.078 R)
• M2: 685,457 km (0.103 R)
• M3: 1,601,445 km (0.049 R)
• M4: 2,123,841 km (0.118 R)
• M5: 2,676,007 km (0.036 R)
• M6: 3,357,275 km (0.088 R)
• M7: 3,964,044 km (0.07 R)
• M8: 4,440,065 km (0.092 R)
• M9: 4,997,915 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 468.4

Radius: 9.6

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.87 AU - 1.37 AU

Year: 765 Days

Day: 10.4 Hours

Environment

Temp: -167 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 70,221,300 km

• M1: 119,529 km (0.116 R)
• M2: 446,101 km (0.07 R)
• M3: 958,474 km (0.091 R)
• M4: 1,332,319 km (0.1 R)
• M5: 1,913,806 km (0.107 R)
• M6: 2,904,443 km (0.097 R)
• M7: 3,280,382 km (0.054 R)
• M8: 3,620,568 km (0.119 R)
• M9: 4,145,656 km (0.11 R)
• M10: 4,465,796 km (0.055 R)
• M11: 4,786,085 km (0.051 R)
• M12: 6,482,824 km (0.063 R)
• M13: 7,193,114 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 265.9

Radius: 9.3

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.57 AU - 2.17 AU

Year: 1651 Days

Day: 9.9 Hours

Environment

Temp: -180 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 70,221,300 km

• M1: 115,789 km (0.086 R)
• M2: 408,103 km (0.117 R)
• M3: 718,967 km (0.048 R)
• M4: 1,051,523 km (0.064 R)
• M5: 1,553,873 km (0.103 R)
• M6: 1,982,920 km (0.098 R)
• M7: 2,431,863 km (0.108 R)
• M8: 3,475,607 km (0.068 R)
• M9: 3,904,056 km (0.073 R)
• M10: 4,904,267 km (0.065 R)
• M11: 5,854,213 km (0.075 R)
• M12: 9,526,841 km (0.065 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 118.6

Radius: 14.4

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.98 AU - 2.12 AU

Year: 1895 Days

Day: 9.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 58.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 70,221,300 km

• M1: 179,069 km (0.119 R)
• M2: 671,844 km (0.071 R)
• M3: 1,631,514 km (0.096 R)
• M4: 2,718,642 km (0.066 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 134.2

Radius: 14.4

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 2.21 AU - 3.61 AU

Year: 3205 Days

Day: 11.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 70,221,300 km

• M1: 179,069 km (0.061 R)
• M2: 936,034 km (0.051 R)
• M3: 1,786,498 km (0.1 R)
• M4: 2,523,118 km (0.036 R)
• M5: 3,726,932 km (0.055 R)
• M6: 4,533,414 km (0.112 R)
• M7: 5,264,199 km (0.103 R)
• M8: 6,495,240 km (0.06 R)
• M9: 7,505,325 km (0.029 R)
• M10: 9,244,550 km (0.057 R)
• M11: 11,134,869 km (0.077 R)
• M12: 12,282,135 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 727.9

Radius: 3.7

Gravity: 53.17 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 8.37 AU - 9.47 AU

Year: 17201 Days

Day: 21.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 70,221,300 km

• M1: 46,076 km (0.116 R)
• M2: 203,752 km (0.092 R)
• M3: 366,964 km (0.106 R)
• M4: 659,427 km (0.12 R)
• M5: 888,761 km (0.103 R)
• M6: 1,458,130 km (0.114 R)
• M7: 1,603,091 km (0.066 R)
• M8: 2,779,977 km (0.044 R)
• M9: 3,292,948 km (0.1 R)
• M10: 3,571,799 km (0.066 R)
• M11: 4,370,951 km (0.091 R)
• M12: 5,097,996 km (0.089 R)
• M13: 5,743,062 km (0.077 R)
• M14: 7,239,191 km (0.098 R)
• M15: 7,378,466 km (0.096 R)
• M16: 8,201,404 km (0.097 R)
• M17: 8,403,511 km (0.118 R)
• M18: 8,870,705 km (0.103 R)
• M19: 9,300,200 km (0.097 R)
• M20: 10,317,167 km (0.099 R)
• M21: 10,973,752 km (0.114 R)
• M22: 12,502,492 km (0.092 R)
• M23: 13,738,021 km (0.035 R)
• M24: 17,426,506 km (0.108 R)
• M25: 17,929,454 km (0.072 R)
• M26: 24,219,446 km (0.097 R)
• M27: 24,950,830 km (0.083 R)
• M28: 30,127,366 km (0.117 R)
• M29: 31,586,693 km (0.118 R)
• M30: 36,790,305 km (0.091 R)
• M31: 37,616,983 km (0.102 R)
• M32: 40,171,367 km (0.112 R)
• M33: 42,687,752 km (0.093 R)
• M34: 46,576,100 km (0.097 R)
• M35: 51,888,919 km (0.103 R)
• M36: 61,745,324 km (0.084 R)
• M37: 63,697,726 km (0.082 R)
• M38: 68,965,666 km (0.074 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 499 - 19,494 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit