🌌 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: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.5 AU - 0.54 AU

Year: 246 Days

Day: 12.9 Hours

Environment

Temp: -113 °C

Axial Tilt: 3.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 85,596,560 km

• M1: 279,299 km (0.075 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.54

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.49 AU - 0.73 AU

Year: 313 Days

Day: 33.1 Hours

Environment

Temp: -125 °C

Axial Tilt: 31.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604

Radius: 14.3

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.75 AU - 0.83 AU

Year: 461 Days

Day: 8.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 85,596,560 km

• M1: 178,021 km (0.036 R)
• M2: 689,497 km (0.074 R)
• M3: 1,162,375 km (0.1 R)
• M4: 1,955,244 km (0.088 R)
• M5: 2,443,083 km (0.066 R)
• M6: 3,267,517 km (0.039 R)
• M7: 3,770,914 km (0.102 R)
• M8: 4,284,633 km (0.109 R)
• M9: 5,357,698 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.4

Radius: 12.4

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.31 AU - 1.59 AU

Year: 1145 Days

Day: 10.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 85,596,560 km

• M1: 154,235 km (0.041 R)
• M2: 625,469 km (0.099 R)
• M3: 1,037,760 km (0.102 R)
• M4: 1,507,348 km (0.086 R)
• M5: 2,018,075 km (0.119 R)
• M6: 2,995,997 km (0.091 R)
• M7: 3,570,303 km (0.071 R)
• M8: 4,036,300 km (0.094 R)
• M9: 4,959,618 km (0.066 R)
• M10: 5,382,232 km (0.074 R)
• M11: 5,849,875 km (0.053 R)
• M12: 7,320,273 km (0.114 R)
• M13: 8,102,669 km (0.092 R)
• M14: 8,527,976 km (0.104 R)
• M15: 9,080,591 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 962.6

Radius: 13.2

Gravity: 5.52 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.93 AU - 2.49 AU

Year: 2155 Days

Day: 13.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 85,596,560 km

• M1: 164,258 km (0.111 R)
• M2: 584,180 km (0.092 R)
• M3: 1,281,904 km (0.099 R)
• M4: 2,002,517 km (0.077 R)
• M5: 2,415,407 km (0.05 R)
• M6: 2,839,218 km (0.038 R)
• M7: 4,014,758 km (0.094 R)
• M8: 6,234,192 km (0.108 R)
• M9: 7,012,999 km (0.098 R)
• M10: 8,172,532 km (0.047 R)
• M11: 10,637,905 km (0.032 R)
• M12: 11,304,513 km (0.111 R)
• M13: 11,874,331 km (0.118 R)
• M14: 12,293,055 km (0.046 R)
• M15: 13,654,097 km (0.066 R)
• M16: 14,394,756 km (0.107 R)
• M17: 17,900,133 km (0.06 R)
• M18: 18,675,200 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.2

Radius: 13

Gravity: 5.24 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 2.39 AU - 2.75 AU

Year: 2703 Days

Day: 5.8 Hours

Environment

Temp: -204 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 85,596,560 km

• M1: 161,715 km (0.111 R)
• M2: 642,523 km (0.058 R)
• M3: 1,295,368 km (0.083 R)
• M4: 1,825,244 km (0.108 R)
• M5: 2,340,608 km (0.104 R)
• M6: 3,315,538 km (0.057 R)
• M7: 3,728,129 km (0.113 R)
• M8: 4,217,463 km (0.053 R)
• M9: 5,227,249 km (0.116 R)
• M10: 6,708,866 km (0.1 R)
• M11: 8,352,049 km (0.102 R)
• M12: 8,872,500 km (0.065 R)
• M13: 9,864,035 km (0.102 R)
• M14: 11,009,805 km (0.093 R)
• M15: 11,509,163 km (0.042 R)
• M16: 12,508,476 km (0.106 R)
• M17: 13,098,490 km (0.073 R)
• M18: 13,564,937 km (0.113 R)
• M19: 14,236,631 km (0.061 R)
• M20: 16,709,035 km (0.086 R)
• M21: 20,558,787 km (0.102 R)
• M22: 21,317,397 km (0.062 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.5

Radius: 8.4

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 3.83 AU - 4.21 AU

Year: 5287 Days

Day: 8.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 85,596,560 km

• M1: 113,694 km (0.094 R)
• M2: 772,075 km (0.053 R)
• M3: 7,921,806 km (0.12 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.2

Radius: 12.2

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 3.65 AU - 5.69 AU

Year: 6620 Days

Day: 12.9 Hours

Environment

Temp: -213 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 85,596,560 km

• M1: 151,692 km (0.111 R)
• M2: 585,676 km (0.107 R)
• M3: 1,146,668 km (0.119 R)
• M4: 1,695,542 km (0.102 R)
• M5: 2,166,177 km (0.108 R)
• M6: 2,612,278 km (0.083 R)
• M7: 3,464,537 km (0.059 R)
• M8: 3,956,116 km (0.114 R)
• M9: 4,851,010 km (0.102 R)
• M10: 6,753,895 km (0.1 R)
• M11: 7,716,857 km (0.052 R)
• M12: 9,507,393 km (0.039 R)
• M13: 11,868,646 km (0.091 R)
• M14: 14,183,823 km (0.092 R)
• M15: 15,140,202 km (0.1 R)
• M16: 15,759,388 km (0.109 R)
• M17: 20,353,688 km (0.119 R)
• M18: 25,946,404 km (0.083 R)
• M19: 28,951,377 km (0.088 R)
• M20: 30,002,601 km (0.113 R)
• M21: 33,621,224 km (0.102 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 969

Radius: 7.7

Gravity: 16.34 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 8.26 AU - 11.3 AU

Year: 20064 Days

Day: 23.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 85,596,560 km

• M1: 96,491 km (0.09 R)
• M2: 361,877 km (0.107 R)
• M3: 749,485 km (0.111 R)
• M4: 1,686,866 km (0.084 R)
• M5: 2,033,633 km (0.065 R)
• M6: 2,335,672 km (0.117 R)
• M7: 2,923,741 km (0.107 R)
• M8: 3,339,024 km (0.113 R)
• M9: 3,606,805 km (0.116 R)
• M10: 5,051,471 km (0.072 R)
• M11: 6,430,315 km (0.097 R)
• M12: 8,859,934 km (0.062 R)
• M13: 10,278,571 km (0.076 R)
• M14: 11,041,968 km (0.063 R)
• M15: 11,571,545 km (0.113 R)
• M16: 12,117,876 km (0.11 R)
• M17: 16,097,180 km (0.119 R)
• M18: 17,301,143 km (0.088 R)
• M19: 18,656,500 km (0.113 R)
• M20: 19,694,260 km (0.041 R)
• M21: 22,299,807 km (0.116 R)
• M22: 26,979,976 km (0.116 R)
• M23: 27,577,320 km (0.036 R)
• M24: 31,348,533 km (0.08 R)
• M25: 32,141,851 km (0.099 R)
• M26: 37,185,842 km (0.062 R)
• M27: 41,613,939 km (0.108 R)
• M28: 47,065,884 km (0.076 R)
• M29: 49,515,998 km (0.112 R)
• M30: 62,425,845 km (0.097 R)
• M31: 64,314,518 km (0.12 R)
• M32: 65,380,104 km (0.104 R)
• M33: 66,240,890 km (0.09 R)
• M34: 66,891,491 km (0.12 R)
• M35: 74,098,668 km (0.119 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 312 - 15,713 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit