🌌 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: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.59 AU - 0.69 AU

Year: 326 Days

Day: 12.7 Hours

Environment

Temp: -132 °C

Axial Tilt: 0.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.1

Radius: 9.3

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.82 AU - 1.18 AU

Year: 636 Days

Day: 11.4 Hours

Environment

Temp: -169 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 79,923,305 km

• M1: 115,639 km (0.079 R)
• M2: 441,613 km (0.037 R)
• M3: 804,238 km (0.081 R)
• M4: 1,187,059 km (0.115 R)
• M5: 1,646,474 km (0.09 R)
• M6: 2,349,734 km (0.11 R)
• M7: 2,796,583 km (0.114 R)
• M8: 3,275,894 km (0.045 R)
• M9: 3,927,842 km (0.102 R)
• M10: 4,285,081 km (0.102 R)
• M11: 4,604,174 km (0.095 R)
• M12: 5,128,664 km (0.057 R)
• M13: 5,488,895 km (0.099 R)
• M14: 5,918,840 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 496

Radius: 12.3

Gravity: 3.28 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.54 AU - 1.94 AU

Year: 1459 Days

Day: 11.3 Hours

Environment

Temp: -194 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 79,923,305 km

• M1: 156,031 km (0.076 R)
• M2: 591,809 km (0.068 R)
• M3: 1,269,787 km (0.053 R)
• M4: 1,742,965 km (0.106 R)
• M5: 2,232,449 km (0.098 R)
• M6: 2,633,970 km (0.109 R)
• M7: 3,028,459 km (0.08 R)
• M8: 3,508,369 km (0.086 R)
• M9: 3,922,007 km (0.087 R)
• M10: 4,715,923 km (0.055 R)
• M11: 6,004,111 km (0.055 R)
• M12: 7,158,707 km (0.079 R)
• M13: 8,097,434 km (0.084 R)
• M14: 8,739,059 km (0.117 R)
• M15: 10,475,890 km (0.038 R)
• M16: 11,477,448 km (0.038 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.1

Radius: 8.2

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 3.82 AU - 4.06 AU

Year: 4973 Days

Day: 10.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 53.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 79,923,305 km

• M1: 102,026 km (0.067 R)
• M2: 384,616 km (0.106 R)
• M3: 666,010 km (0.111 R)
• M4: 1,342,790 km (0.096 R)
• M5: 1,830,330 km (0.066 R)
• M6: 2,349,584 km (0.114 R)
• M7: 2,963,534 km (0.106 R)
• M8: 3,680,257 km (0.088 R)
• M9: 3,981,847 km (0.069 R)
• M10: 5,147,513 km (0.119 R)
• M11: 5,948,011 km (0.115 R)
• M12: 6,773,044 km (0.099 R)
• M13: 7,794,049 km (0.118 R)
• M14: 8,486,238 km (0.099 R)
• M15: 10,809,344 km (0.062 R)
• M16: 14,524,756 km (0.065 R)
• M17: 14,899,798 km (0.119 R)
• M18: 16,975,618 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.5

Radius: 9.3

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 3.43 AU - 5.55 AU

Year: 6049 Days

Day: 6.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 79,923,305 km

• M1: 116,537 km (0.083 R)
• M2: 503,696 km (0.105 R)
• M3: 1,164,021 km (0.109 R)
• M4: 1,468,752 km (0.074 R)
• M5: 2,231,252 km (0.094 R)
• M6: 2,800,323 km (0.104 R)
• M7: 3,103,109 km (0.085 R)
• M8: 6,993,700 km (0.106 R)
• M9: 8,568,218 km (0.114 R)
• M10: 9,245,896 km (0.108 R)
• M11: 9,633,654 km (0.12 R)
• M12: 10,254,186 km (0.032 R)
• M13: 11,414,018 km (0.097 R)
• M14: 17,570,719 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.9

Radius: 14.1

Gravity: 1.45 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 4.18 AU - 5.88 AU

Year: 7173 Days

Day: 13.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 79,923,305 km

• M1: 178,470 km (0.099 R)
• M2: 902,823 km (0.06 R)
• M3: 1,392,307 km (0.097 R)
• M4: 1,873,564 km (0.111 R)
• M5: 3,147,539 km (0.093 R)
• M6: 3,775,401 km (0.03 R)
• M7: 5,848,080 km (0.036 R)
• M8: 6,297,322 km (0.06 R)
• M9: 6,899,603 km (0.085 R)
• M10: 8,480,853 km (0.066 R)
• M11: 9,579,948 km (0.103 R)
• M12: 14,129,818 km (0.076 R)
• M13: 14,723,273 km (0.085 R)
• M14: 18,961,979 km (0.119 R)
• M15: 21,114,842 km (0.085 R)
• M16: 21,891,105 km (0.109 R)
• M17: 26,791,183 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 699

Radius: 7.5

Gravity: 12.43 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 4.86 AU - 7.9 AU

Year: 10246 Days

Day: 19.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 79,923,305 km

• M1: 93,349 km (0.106 R)
• M2: 369,357 km (0.093 R)
• M3: 712,535 km (0.06 R)
• M4: 963,560 km (0.117 R)
• M5: 1,482,216 km (0.083 R)
• M6: 1,727,556 km (0.099 R)
• M7: 2,034,381 km (0.116 R)
• M8: 2,633,671 km (0.097 R)
• M9: 3,110,289 km (0.097 R)
• M10: 3,904,504 km (0.094 R)
• M11: 4,765,590 km (0.105 R)
• M12: 5,372,808 km (0.101 R)
• M13: 8,416,825 km (0.096 R)
• M14: 8,736,366 km (0.086 R)
• M15: 9,399,683 km (0.066 R)
• M16: 10,096,061 km (0.088 R)
• M17: 11,259,334 km (0.105 R)
• M18: 17,762,503 km (0.115 R)
• M19: 18,288,788 km (0.082 R)
• M20: 20,091,443 km (0.03 R)
• M21: 20,334,988 km (0.058 R)
• M22: 20,910,940 km (0.053 R)
• M23: 22,268,241 km (0.071 R)
• M24: 23,864,152 km (0.103 R)
• M25: 24,412,727 km (0.116 R)
• M26: 29,839,240 km (0.112 R)
• M27: 30,262,752 km (0.092 R)
• M28: 33,226,435 km (0.086 R)
• M29: 35,188,411 km (0.055 R)
• M30: 38,212,383 km (0.102 R)
• M31: 41,536,298 km (0.079 R)
• M32: 42,596,647 km (0.03 R)
• M33: 42,864,577 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 222.3

Radius: 4.8

Gravity: 9.65 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 8.31 AU - 8.93 AU

Year: 16091 Days

Day: 23.4 Hours

Environment

Temp: -234 °C

Axial Tilt: 58.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 79,923,305 km

• M1: 60,288 km (0.115 R)
• M2: 221,554 km (0.077 R)
• M3: 581,188 km (0.112 R)
• M4: 1,150,108 km (0.095 R)
• M5: 1,624,782 km (0.117 R)
• M6: 2,029,894 km (0.089 R)
• M7: 3,551,902 km (0.092 R)
• M8: 3,907,646 km (0.114 R)
• M9: 4,809,721 km (0.096 R)
• M10: 5,055,361 km (0.066 R)
• M11: 7,093,931 km (0.079 R)
• M12: 10,262,564 km (0.084 R)
• M13: 10,414,106 km (0.078 R)
• M14: 14,200,727 km (0.09 R)
• M15: 14,899,200 km (0.109 R)
• M16: 15,553,840 km (0.086 R)
• M17: 15,955,660 km (0.112 R)
• M18: 17,345,275 km (0.101 R)
• M19: 20,602,170 km (0.101 R)
• M20: 22,928,716 km (0.118 R)
• M21: 24,155,119 km (0.09 R)
• M22: 24,693,971 km (0.09 R)
• M23: 24,875,284 km (0.119 R)
• M24: 25,424,607 km (0.078 R)
• M25: 26,075,806 km (0.088 R)
• M26: 29,805,730 km (0.116 R)
• M27: 30,114,650 km (0.088 R)
• M28: 34,212,584 km (0.098 R)
• M29: 36,043,812 km (0.099 R)
• M30: 41,032,751 km (0.118 R)
• M31: 41,414,824 km (0.119 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 866

Radius: 6.4

Gravity: 21.14 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 8.23 AU - 11.13 AU

Year: 19149 Days

Day: 22.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 79,923,305 km

• M1: 79,736 km (0.073 R)
• M2: 338,390 km (0.11 R)
• M3: 1,211,144 km (0.101 R)
• M4: 1,450,800 km (0.1 R)
• M5: 1,832,275 km (0.09 R)
• M6: 6,383,491 km (0.076 R)
• M7: 6,651,720 km (0.051 R)
• M8: 7,902,059 km (0.065 R)
• M9: 10,733,348 km (0.106 R)
• M10: 12,169,488 km (0.038 R)
• M11: 14,480,326 km (0.056 R)
• M12: 17,153,939 km (0.089 R)
• M13: 20,330,799 km (0.118 R)
• M14: 21,905,616 km (0.073 R)
• M15: 29,264,485 km (0.026 R)
• M16: 30,005,443 km (0.103 R)
• M17: 30,255,122 km (0.118 R)
• M18: 36,389,084 km (0.062 R)
• M19: 39,745,461 km (0.119 R)
• M20: 44,264,065 km (0.118 R)
• M21: 51,934,995 km (0.082 R)
• M22: 66,396,472 km (0.082 R)
• M23: 74,768,717 km (0.09 R)
• M24: 76,616,549 km (0.106 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: 489 - 11,993 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit