🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.46 AU - 0.7 AU

Year: 285 Days

Day: 21 Hours

Environment

Temp: -121 °C

Axial Tilt: 32.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 109.1

Radius: 14.4

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.68 AU - 0.92 AU

Year: 462 Days

Day: 13.1 Hours

Environment

Temp: -153 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 52,739,645 km

• M1: 192,981 km (0.031 R)
• M2: 697,276 km (0.109 R)
• M3: 1,170,304 km (0.108 R)
• M4: 1,647,222 km (0.096 R)
• M5: 2,997,941 km (0.057 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 743.6

Radius: 9.9

Gravity: 7.59 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.89 AU - 0.91 AU

Year: 551 Days

Day: 12.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,739,645 km

• M1: 123,119 km (0.101 R)
• M2: 472,580 km (0.114 R)
• M3: 968,497 km (0.106 R)
• M4: 1,283,550 km (0.091 R)
• M5: 1,615,208 km (0.094 R)
• M6: 2,213,450 km (0.083 R)
• M7: 3,034,443 km (0.084 R)
• M8: 3,463,789 km (0.087 R)
• M9: 4,339,086 km (0.092 R)
• M10: 5,235,327 km (0.117 R)
• M11: 5,583,741 km (0.101 R)
• M12: 5,966,262 km (0.084 R)
• M13: 6,483,721 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 585.7

Radius: 14.1

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.2 AU - 1.96 AU

Year: 1282 Days

Day: 8.2 Hours

Environment

Temp: -175 °C

Axial Tilt: 62 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,739,645 km

• M1: 177,573 km (0.078 R)
• M2: 627,114 km (0.089 R)
• M3: 1,269,936 km (0.092 R)
• M4: 1,740,721 km (0.058 R)
• M5: 2,468,066 km (0.065 R)
• M6: 3,571,500 km (0.108 R)
• M7: 4,829,917 km (0.054 R)
• M8: 5,878,598 km (0.106 R)
• M9: 7,498,444 km (0.074 R)
• M10: 9,578,452 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.8

Radius: 12

Gravity: 5.85 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 2 AU - 2.5 AU

Year: 2179 Days

Day: 7.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,739,645 km

• M1: 150,495 km (0.055 R)
• M2: 541,395 km (0.039 R)
• M3: 1,235,230 km (0.096 R)
• M4: 1,699,581 km (0.042 R)
• M5: 2,611,081 km (0.038 R)
• M6: 3,152,476 km (0.08 R)
• M7: 3,711,972 km (0.108 R)
• M8: 5,648,816 km (0.086 R)
• M9: 6,725,023 km (0.107 R)
• M10: 7,535,245 km (0.063 R)
• M11: 9,006,390 km (0.082 R)
• M12: 9,454,885 km (0.037 R)
• M13: 11,520,083 km (0.061 R)
• M14: 12,851,654 km (0.09 R)
• M15: 13,734,581 km (0.112 R)
• M16: 14,846,841 km (0.073 R)
• M17: 16,832,603 km (0.103 R)
• M18: 17,728,096 km (0.04 R)
• M19: 18,105,980 km (0.09 R)

Asteroid Belt

Center: 2.58 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 45.1

Radius: 9

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 2.78 AU - 3.02 AU

Year: 3189 Days

Day: 13.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,739,645 km

• M1: 112,348 km (0.109 R)
• M2: 571,165 km (0.072 R)
• M3: 1,068,129 km (0.068 R)
• M4: 1,516,773 km (0.101 R)
• M5: 1,991,297 km (0.063 R)
• M6: 2,311,138 km (0.101 R)
• M7: 2,843,706 km (0.111 R)
• M8: 3,278,288 km (0.11 R)
• M9: 3,756,702 km (0.102 R)
• M10: 5,085,280 km (0.079 R)
• M11: 6,068,438 km (0.088 R)
• M12: 6,790,995 km (0.114 R)
• M13: 8,716,470 km (0.084 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 185.3

Radius: 3.5

Gravity: 15.13 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 9.63 AU - 11.93 AU

Year: 22853 Days

Day: 19.2 Hours

Environment

Temp: -236 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 52,739,645 km

• M1: 43,683 km (0.069 R)
• M2: 346,618 km (0.056 R)
• M3: 570,267 km (0.07 R)
• M4: 688,898 km (0.067 R)
• M5: 833,859 km (0.104 R)
• M6: 988,094 km (0.026 R)
• M7: 1,124,976 km (0.117 R)
• M8: 1,313,918 km (0.112 R)
• M9: 2,064,002 km (0.075 R)
• M10: 2,946,031 km (0.105 R)
• M11: 3,587,207 km (0.112 R)
• M12: 5,876,055 km (0.118 R)
• M13: 6,443,779 km (0.056 R)
• M14: 7,047,256 km (0.078 R)
• M15: 7,256,544 km (0.086 R)
• M16: 8,887,460 km (0.067 R)
• M17: 9,082,536 km (0.105 R)
• M18: 11,250,059 km (0.09 R)
• M19: 11,478,345 km (0.083 R)
• M20: 11,826,609 km (0.096 R)
• M21: 13,934,294 km (0.11 R)
• M22: 14,131,464 km (0.081 R)
• M23: 15,776,442 km (0.068 R)
• M24: 16,571,405 km (0.097 R)
• M25: 16,792,810 km (0.114 R)
• M26: 19,196,848 km (0.07 R)
• M27: 20,185,989 km (0.085 R)
• M28: 20,692,976 km (0.117 R)
• M29: 21,820,645 km (0.085 R)
• M30: 22,806,345 km (0.066 R)
• M31: 24,482,589 km (0.057 R)
• M32: 38,057,100 km (0.104 R)
• M33: 40,674,913 km (0.073 R)
• M34: 44,253,893 km (0.037 R)
• M35: 46,704,156 km (0.069 R)
• M36: 47,590,075 km (0.038 R)
• M37: 48,487,213 km (0.113 R)
• M38: 51,402,277 km (0.067 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 98

Radius: 4.9

Gravity: 4.08 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 9.87 AU - 12.03 AU

Year: 23396 Days

Day: 23.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,739,645 km

• M1: 95,294 km (0.117 R)
• M2: 725,849 km (0.05 R)
• M3: 929,302 km (0.059 R)
• M4: 3,975,115 km (0.118 R)
• M5: 4,670,894 km (0.077 R)
• M6: 5,444,615 km (0.063 R)
• M7: 5,709,403 km (0.108 R)
• M8: 6,481,777 km (0.026 R)
• M9: 6,969,765 km (0.092 R)
• M10: 25,106,263 km (0.097 R)
• M11: 31,691,411 km (0.066 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 683.3

Radius: 4.8

Gravity: 29.66 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 8.68 AU - 13.36 AU

Year: 23620 Days

Day: 24.9 Hours

Environment

Temp: -233 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 52,739,645 km

• M1: 65,973 km (0.087 R)
• M2: 579,841 km (0.112 R)
• M3: 1,039,556 km (0.044 R)
• M4: 1,262,756 km (0.08 R)
• M5: 1,568,833 km (0.076 R)
• M6: 2,004,013 km (0.103 R)
• M7: 2,283,462 km (0.11 R)
• M8: 2,588,492 km (0.12 R)
• M9: 3,545,320 km (0.057 R)
• M10: 3,699,107 km (0.118 R)
• M11: 3,954,470 km (0.078 R)
• M12: 4,941,666 km (0.072 R)
• M13: 5,996,032 km (0.065 R)
• M14: 6,393,663 km (0.106 R)
• M15: 6,668,325 km (0.109 R)
• M16: 6,855,771 km (0.118 R)
• M17: 7,692,023 km (0.112 R)
• M18: 8,594,398 km (0.116 R)
• M19: 10,991,704 km (0.117 R)
• M20: 13,058,099 km (0.118 R)
• M21: 15,697,005 km (0.088 R)
• M22: 15,862,610 km (0.113 R)
• M23: 16,621,670 km (0.067 R)
• M24: 19,326,848 km (0.079 R)
• M25: 19,997,795 km (0.082 R)
• M26: 22,625,930 km (0.12 R)
• M27: 26,281,803 km (0.107 R)
• M28: 28,066,356 km (0.101 R)
• M29: 33,353,294 km (0.086 R)
• M30: 37,764,786 km (0.081 R)
• M31: 42,710,641 km (0.054 R)
• M32: 44,505,666 km (0.094 R)
• M33: 57,708,875 km (0.109 R)
• M34: 61,323,458 km (0.119 R)
• M35: 66,590,051 km (0.049 R)
• M36: 68,999,774 km (0.116 R)
• M37: 74,691,374 km (0.044 R)
• M38: 82,922,997 km (0.096 R)
• M39: 84,943,915 km (0.088 R)

Planet 10 - Ice Giant

Semi-Major Axis: 11.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 156.2

Radius: 5.6

Gravity: 4.98 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 8.53 AU - 13.85 AU

Year: 24169 Days

Day: 23 Hours

Environment

Temp: -228 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 52,739,645 km

• M1: 98,735 km (0.103 R)
• M2: 310,565 km (0.074 R)
• M3: 653,743 km (0.069 R)
• M4: 2,568,147 km (0.029 R)
• M5: 2,803,015 km (0.12 R)
• M6: 3,999,798 km (0.031 R)
• M7: 5,678,735 km (0.062 R)
• M8: 6,004,410 km (0.108 R)
• M9: 7,056,382 km (0.115 R)
• M10: 7,390,284 km (0.067 R)
• M11: 9,823,793 km (0.105 R)
• M12: 12,201,950 km (0.091 R)
• M13: 12,866,913 km (0.079 R)
• M14: 20,983,046 km (0.076 R)
• M15: 24,968,333 km (0.119 R)
• M16: 28,792,653 km (0.117 R)
• M17: 39,629,523 km (0.093 R)
• M18: 41,217,056 km (0.026 R)
• M19: 41,890,845 km (0.055 R)
• M20: 47,106,874 km (0.109 R)
• M21: 49,794,100 km (0.119 R)
• M22: 51,641,335 km (0.101 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 212 - 13,558 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit