🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.63

Radius: 0.83

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.64 AU - 0.7 AU

Year: 349 Days

Day: 46.9 Hours

Environment

Temp: -138 °C

Axial Tilt: 11.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 70,851,353 km

• M1: 35,006 km (0.05 R)
• M2: 131,646 km (0.088 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 327.8

Radius: 10.4

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.68 AU - 0.7 AU

Year: 364 Days

Day: 9.9 Hours

Environment

Temp: -138 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 70,851,353 km

• M1: 129,552 km (0.109 R)
• M2: 584,778 km (0.078 R)
• M3: 1,195,437 km (0.105 R)
• M4: 1,606,831 km (0.046 R)
• M5: 2,211,655 km (0.034 R)
• M6: 2,546,305 km (0.078 R)
• M7: 3,392,132 km (0.066 R)
• M8: 3,727,680 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 595.1

Radius: 12.6

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.69 AU - 0.85 AU

Year: 430 Days

Day: 9.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 70,851,353 km

• M1: 160,219 km (0.112 R)
• M2: 782,696 km (0.117 R)
• M3: 1,182,721 km (0.094 R)
• M4: 2,295,729 km (0.058 R)
• M5: 2,774,592 km (0.068 R)
• M6: 3,241,187 km (0.099 R)
• M7: 3,698,508 km (0.079 R)
• M8: 4,585,923 km (0.102 R)
• M9: 5,042,196 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 717.3

Radius: 11.8

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 1.08 AU - 1.36 AU

Year: 857 Days

Day: 6.6 Hours

Environment

Temp: -167 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 70,851,353 km

• M1: 146,756 km (0.027 R)
• M2: 519,254 km (0.111 R)
• M3: 978,520 km (0.082 R)
• M4: 1,456,186 km (0.083 R)
• M5: 2,377,110 km (0.095 R)
• M6: 3,127,044 km (0.069 R)
• M7: 3,666,494 km (0.068 R)
• M8: 4,316,198 km (0.11 R)
• M9: 5,281,702 km (0.091 R)
• M10: 6,091,177 km (0.056 R)
• M11: 6,558,520 km (0.054 R)
• M12: 7,398,811 km (0.095 R)
• M13: 8,106,409 km (0.061 R)
• M14: 8,939,071 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 111.7

Radius: 10.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.36 AU - 1.42 AU

Year: 1042 Days

Day: 8.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 70,851,353 km

• M1: 138,228 km (0.033 R)
• M2: 573,409 km (0.112 R)
• M3: 1,504,955 km (0.084 R)
• M4: 1,884,933 km (0.099 R)
• M5: 2,761,427 km (0.045 R)
• M6: 4,361,077 km (0.096 R)
• M7: 4,929,848 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 677.3

Radius: 12.6

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 4.29 AU - 5.37 AU

Year: 6749 Days

Day: 8.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 70,851,353 km

• M1: 156,928 km (0.039 R)
• M2: 562,488 km (0.087 R)
• M3: 1,278,613 km (0.107 R)
• M4: 2,196,097 km (0.087 R)
• M5: 3,468,427 km (0.114 R)
• M6: 3,979,453 km (0.082 R)
• M7: 5,853,765 km (0.101 R)
• M8: 6,896,462 km (0.116 R)
• M9: 7,443,691 km (0.04 R)
• M10: 7,980,448 km (0.114 R)
• M11: 8,420,116 km (0.079 R)
• M12: 8,876,090 km (0.079 R)
• M13: 13,926,365 km (0.114 R)
• M14: 14,922,088 km (0.093 R)
• M15: 16,535,950 km (0.059 R)
• M16: 18,818,365 km (0.099 R)
• M17: 19,456,101 km (0.107 R)
• M18: 20,774,806 km (0.094 R)
• M19: 21,763,797 km (0.118 R)
• M20: 22,387,770 km (0.101 R)
• M21: 28,831,698 km (0.108 R)
• M22: 33,033,753 km (0.114 R)
• M23: 33,962,157 km (0.065 R)
• M24: 35,120,494 km (0.1 R)
• M25: 36,632,629 km (0.064 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 569

Radius: 3.7

Gravity: 41.56 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 6.08 AU - 9.6 AU

Year: 13957 Days

Day: 19 Hours

Environment

Temp: -228 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 70,851,353 km

• M1: 74,799 km (0.101 R)
• M2: 255,364 km (0.116 R)
• M3: 523,443 km (0.117 R)
• M4: 712,385 km (0.07 R)
• M5: 1,202,617 km (0.059 R)
• M6: 1,721,124 km (0.067 R)
• M7: 2,103,645 km (0.081 R)
• M8: 2,315,027 km (0.09 R)
• M9: 3,180,301 km (0.104 R)
• M10: 3,459,002 km (0.086 R)
• M11: 3,864,861 km (0.066 R)
• M12: 4,006,979 km (0.091 R)
• M13: 4,271,618 km (0.113 R)
• M14: 4,547,775 km (0.117 R)
• M15: 5,000,907 km (0.055 R)
• M16: 5,519,114 km (0.112 R)
• M17: 6,500,626 km (0.114 R)
• M18: 6,824,655 km (0.116 R)
• M19: 7,373,978 km (0.11 R)
• M20: 8,464,696 km (0.116 R)
• M21: 8,608,161 km (0.103 R)
• M22: 8,900,026 km (0.114 R)
• M23: 11,245,422 km (0.109 R)
• M24: 18,039,858 km (0.117 R)
• M25: 19,415,260 km (0.082 R)
• M26: 20,085,908 km (0.095 R)
• M27: 24,245,028 km (0.09 R)
• M28: 25,022,488 km (0.114 R)
• M29: 27,038,469 km (0.075 R)
• M30: 33,611,500 km (0.075 R)
• M31: 35,561,658 km (0.091 R)
• M32: 37,585,717 km (0.11 R)
• M33: 37,844,073 km (0.099 R)
• M34: 38,626,021 km (0.041 R)
• M35: 38,757,368 km (0.043 R)
• M36: 42,698,224 km (0.119 R)
• M37: 43,403,578 km (0.116 R)
• M38: 47,197,081 km (0.073 R)
• M39: 47,951,204 km (0.028 R)
• M40: 49,174,166 km (0.098 R)
• M41: 50,104,964 km (0.1 R)
• M42: 52,967,819 km (0.097 R)
• M43: 54,109,999 km (0.099 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 149.9

Radius: 7.8

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 7.25 AU - 8.53 AU

Year: 14091 Days

Day: 22 Hours

Environment

Temp: -219 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 70,851,353 km

• M1: 137,780 km (0.117 R)
• M2: 858,243 km (0.108 R)
• M3: 1,339,948 km (0.104 R)
• M4: 1,596,808 km (0.113 R)
• M5: 2,414,360 km (0.102 R)
• M6: 2,915,962 km (0.043 R)
• M7: 3,352,638 km (0.056 R)
• M8: 4,542,091 km (0.094 R)
• M9: 5,610,519 km (0.116 R)
• M10: 7,801,230 km (0.103 R)
• M11: 8,768,230 km (0.079 R)
• M12: 9,324,286 km (0.12 R)
• M13: 10,697,145 km (0.109 R)
• M14: 20,576,738 km (0.102 R)
• M15: 24,270,609 km (0.099 R)
• M16: 26,229,743 km (0.077 R)
• M17: 28,291,949 km (0.105 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 995.6

Radius: 4.4

Gravity: 51.43 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 7.91 AU - 13.15 AU

Year: 21726 Days

Day: 17.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 70,851,353 km

• M1: 55,501 km (0.12 R)
• M2: 232,475 km (0.062 R)
• M3: 387,159 km (0.091 R)
• M4: 594,502 km (0.083 R)
• M5: 750,682 km (0.114 R)
• M6: 897,737 km (0.089 R)
• M7: 1,064,090 km (0.079 R)
• M8: 1,393,355 km (0.097 R)
• M9: 1,846,337 km (0.055 R)
• M10: 3,237,448 km (0.118 R)
• M11: 3,415,918 km (0.078 R)
• M12: 4,301,537 km (0.106 R)
• M13: 8,972,581 km (0.102 R)
• M14: 9,206,702 km (0.03 R)
• M15: 11,501,084 km (0.041 R)
• M16: 12,271,663 km (0.119 R)
• M17: 14,150,163 km (0.04 R)
• M18: 17,540,350 km (0.099 R)
• M19: 18,371,367 km (0.081 R)
• M20: 20,715,416 km (0.053 R)
• M21: 22,814,872 km (0.096 R)
• M22: 23,582,010 km (0.115 R)
• M23: 24,822,027 km (0.067 R)
• M24: 31,142,238 km (0.102 R)
• M25: 33,606,264 km (0.105 R)
• M26: 33,746,736 km (0.097 R)
• M27: 35,029,688 km (0.094 R)
• M28: 35,756,285 km (0.101 R)
• M29: 40,011,895 km (0.055 R)
• M30: 54,197,663 km (0.065 R)
• M31: 57,547,907 km (0.079 R)
• M32: 57,749,116 km (0.044 R)
• M33: 72,329,673 km (0.11 R)
• M34: 73,981,084 km (0.07 R)
• M35: 80,586,727 km (0.071 R)
• M36: 83,902,714 km (0.097 R)

Planet 10 - Ice Giant

Semi-Major Axis: 11.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 391.6

Radius: 3.3

Gravity: 35.96 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 10.26 AU - 12.1 AU

Year: 23768 Days

Day: 18.6 Hours

Environment

Temp: -236 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 70,851,353 km

• M1: 66,421 km (0.065 R)
• M2: 172,786 km (0.105 R)
• M3: 359,184 km (0.055 R)
• M4: 489,335 km (0.047 R)
• M5: 983,606 km (0.045 R)
• M6: 1,229,096 km (0.08 R)
• M7: 3,209,024 km (0.1 R)
• M8: 3,400,060 km (0.047 R)
• M9: 3,895,977 km (0.105 R)
• M10: 5,362,485 km (0.106 R)
• M11: 5,749,944 km (0.068 R)
• M12: 5,909,864 km (0.118 R)
• M13: 12,610,203 km (0.11 R)
• M14: 13,085,775 km (0.084 R)
• M15: 14,510,096 km (0.101 R)
• M16: 14,732,398 km (0.12 R)
• M17: 17,578,797 km (0.097 R)
• M18: 23,000,822 km (0.051 R)
• M19: 27,025,304 km (0.077 R)
• M20: 31,742,574 km (0.099 R)
• M21: 32,874,730 km (0.093 R)
• M22: 35,620,450 km (0.12 R)
• M23: 36,705,334 km (0.09 R)
• M24: 40,822,865 km (0.099 R)
• M25: 46,029,619 km (0.098 R)
• M26: 49,792,006 km (0.063 R)
• M27: 53,577,729 km (0.106 R)
• M28: 69,165,528 km (0.1 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 328 - 17,455 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit