🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.53 AU - 0.59 AU

Year: 271 Days

Day: 39.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 17.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.49

Radius: 1.17

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.53 AU - 0.59 AU

Year: 271 Days

Day: 25.6 Hours

Environment

Temp: -119 °C

Axial Tilt: 39.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 114.5

Radius: 9.4

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.95 AU - 1.05 AU

Year: 646 Days

Day: 11.7 Hours

Environment

Temp: -168 °C

Axial Tilt: 172.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 37,351,530 km

• M1: 116,986 km (0.097 R)
• M2: 414,386 km (0.103 R)
• M3: 1,041,201 km (0.091 R)
• M4: 1,653,056 km (0.106 R)
• M5: 2,162,288 km (0.099 R)
• M6: 2,610,333 km (0.08 R)
• M7: 3,366,550 km (0.109 R)
• M8: 3,888,647 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 522.6

Radius: 13.8

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 1.38 AU - 1.62 AU

Year: 1186 Days

Day: 14.6 Hours

Environment

Temp: -168 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 37,351,530 km

• M1: 171,589 km (0.091 R)
• M2: 673,340 km (0.115 R)
• M3: 1,113,158 km (0.105 R)
• M4: 2,626,789 km (0.089 R)
• M5: 4,021,939 km (0.079 R)
• M6: 4,684,059 km (0.116 R)
• M7: 5,658,839 km (0.075 R)
• M8: 7,164,092 km (0.113 R)
• M9: 8,271,565 km (0.042 R)
• M10: 8,866,666 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 693.9

Radius: 11.5

Gravity: 5.25 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 1.81 AU - 2.25 AU

Year: 1867 Days

Day: 12.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 37,351,530 km

• M1: 143,016 km (0.116 R)
• M2: 585,227 km (0.119 R)
• M3: 998,267 km (0.095 R)
• M4: 1,497,923 km (0.11 R)
• M5: 1,877,453 km (0.097 R)
• M6: 2,296,627 km (0.036 R)
• M7: 2,735,995 km (0.09 R)
• M8: 3,279,185 km (0.074 R)
• M9: 4,040,040 km (0.115 R)
• M10: 4,809,422 km (0.083 R)
• M11: 5,307,433 km (0.109 R)
• M12: 6,008,748 km (0.09 R)
• M13: 6,407,426 km (0.117 R)
• M14: 7,397,615 km (0.081 R)
• M15: 9,613,159 km (0.078 R)
• M16: 10,335,268 km (0.08 R)
• M17: 12,121,317 km (0.118 R)
• M18: 15,128,085 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 367

Radius: 14.8

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.79 AU - 2.41 AU

Year: 1965 Days

Day: 13.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 37,351,530 km

• M1: 184,005 km (0.099 R)
• M2: 689,497 km (0.089 R)
• M3: 1,251,985 km (0.087 R)
• M4: 1,767,200 km (0.071 R)
• M5: 2,295,879 km (0.077 R)
• M6: 3,099,967 km (0.047 R)
• M7: 3,880,120 km (0.104 R)
• M8: 5,484,108 km (0.115 R)
• M9: 5,969,703 km (0.072 R)
• M10: 6,556,426 km (0.092 R)
• M11: 7,956,363 km (0.085 R)
• M12: 8,668,598 km (0.066 R)
• M13: 9,642,032 km (0.074 R)
• M14: 10,319,710 km (0.111 R)
• M15: 11,555,239 km (0.032 R)
• M16: 12,024,976 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760

Radius: 8.2

Gravity: 11.3 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 2 AU - 2.7 AU

Year: 2326 Days

Day: 11.1 Hours

Environment

Temp: -198 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 37,351,530 km

• M1: 102,026 km (0.103 R)
• M2: 469,438 km (0.097 R)
• M3: 1,278,763 km (0.035 R)
• M4: 2,407,329 km (0.057 R)
• M5: 2,681,392 km (0.097 R)
• M6: 3,224,582 km (0.08 R)
• M7: 4,053,803 km (0.104 R)
• M8: 4,813,910 km (0.116 R)
• M9: 5,134,049 km (0.099 R)
• M10: 7,098,120 km (0.074 R)
• M11: 7,635,326 km (0.086 R)
• M12: 9,270,131 km (0.101 R)
• M13: 9,948,558 km (0.061 R)
• M14: 10,431,609 km (0.091 R)
• M15: 12,141,064 km (0.078 R)
• M16: 14,354,514 km (0.091 R)
• M17: 15,067,797 km (0.063 R)
• M18: 15,359,662 km (0.061 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128.3

Radius: 13.9

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.78 AU - 4.06 AU

Year: 4084 Days

Day: 13.8 Hours

Environment

Temp: -217 °C

Axial Tilt: 124.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 37,351,530 km

• M1: 173,085 km (0.111 R)
• M2: 689,945 km (0.102 R)
• M3: 1,569,282 km (0.045 R)
• M4: 2,821,715 km (0.113 R)
• M5: 3,904,205 km (0.094 R)
• M6: 4,521,895 km (0.111 R)
• M7: 7,309,053 km (0.106 R)
• M8: 7,813,198 km (0.12 R)
• M9: 9,697,682 km (0.026 R)
• M10: 10,622,047 km (0.101 R)
• M11: 12,806,326 km (0.104 R)
• M12: 14,217,931 km (0.099 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 411.7

Radius: 13.8

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 3.67 AU - 3.71 AU

Year: 4577 Days

Day: 6.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 37,351,530 km

• M1: 172,038 km (0.065 R)
• M2: 1,142,629 km (0.109 R)
• M3: 2,600,909 km (0.106 R)
• M4: 7,060,122 km (0.115 R)
• M5: 8,458,413 km (0.096 R)
• M6: 9,488,544 km (0.076 R)
• M7: 10,233,990 km (0.106 R)
• M8: 13,131,252 km (0.112 R)
• M9: 14,716,391 km (0.113 R)
• M10: 15,662,448 km (0.115 R)
• M11: 17,156,931 km (0.095 R)
• M12: 20,236,403 km (0.11 R)
• M13: 21,142,517 km (0.043 R)
• M14: 23,035,529 km (0.111 R)
• M15: 23,951,816 km (0.117 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 159.5

Radius: 7.4

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 7.7 AU - 8.04 AU

Year: 14255 Days

Day: 23.9 Hours

Environment

Temp: -235 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 37,351,530 km

• M1: 92,003 km (0.057 R)
• M2: 432,188 km (0.116 R)
• M3: 1,324,390 km (0.059 R)
• M4: 2,152,713 km (0.096 R)
• M5: 2,548,849 km (0.03 R)
• M6: 2,932,118 km (0.073 R)
• M7: 3,624,906 km (0.105 R)
• M8: 3,985,138 km (0.033 R)
• M9: 5,607,826 km (0.103 R)
• M10: 6,812,238 km (0.086 R)
• M11: 8,019,942 km (0.117 R)
• M12: 10,043,702 km (0.041 R)
• M13: 13,315,258 km (0.044 R)
• M14: 14,115,307 km (0.112 R)
• M15: 16,127,398 km (0.094 R)
• M16: 17,435,781 km (0.046 R)
• M17: 20,411,133 km (0.108 R)
• M18: 22,652,558 km (0.117 R)
• M19: 26,804,049 km (0.107 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 276 - 15,648 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit