🌌 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: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.51 AU - 0.83 AU

Year: 349 Days

Day: 31.9 Hours

Environment

Temp: -139 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 494.2

Radius: 10.9

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.7 AU - 0.72 AU

Year: 380 Days

Day: 11.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 74.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 70,101,574 km

• M1: 135,536 km (0.091 R)
• M2: 478,264 km (0.088 R)
• M3: 1,048,382 km (0.047 R)
• M4: 1,576,462 km (0.088 R)
• M5: 1,974,393 km (0.111 R)
• M6: 2,897,412 km (0.098 R)
• M7: 3,513,007 km (0.084 R)
• M8: 4,530,123 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 93.5

Radius: 11

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.67 AU - 0.91 AU

Year: 446 Days

Day: 5.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 70,101,574 km

• M1: 145,409 km (0.094 R)
• M2: 540,048 km (0.097 R)
• M3: 896,989 km (0.076 R)
• M4: 1,287,140 km (0.08 R)
• M5: 1,761,964 km (0.107 R)
• M6: 2,301,264 km (0.063 R)
• M7: 2,714,753 km (0.04 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 48.6

Radius: 10.5

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.77 AU - 0.91 AU

Year: 489 Days

Day: 14.1 Hours

Environment

Temp: -143 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 70,101,574 km

• M1: 130,599 km (0.1 R)
• M2: 792,420 km (0.119 R)
• M3: 1,964,968 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.8

Radius: 12.7

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 1.64 AU - 2.5 AU

Year: 1894 Days

Day: 12.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,101,574 km

• M1: 157,975 km (0.066 R)
• M2: 661,223 km (0.117 R)
• M3: 1,262,905 km (0.061 R)
• M4: 1,949,260 km (0.117 R)
• M5: 4,241,548 km (0.087 R)
• M6: 7,175,761 km (0.055 R)
• M7: 7,742,288 km (0.114 R)
• M8: 12,102,917 km (0.082 R)
• M9: 13,030,723 km (0.088 R)
• M10: 14,532,835 km (0.101 R)
• M11: 15,534,243 km (0.034 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 411.6

Radius: 8.5

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 3.18 AU - 4.76 AU

Year: 5029 Days

Day: 11.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 70,101,574 km

• M1: 105,766 km (0.12 R)
• M2: 403,615 km (0.039 R)
• M3: 759,658 km (0.101 R)
• M4: 1,160,879 km (0.064 R)
• M5: 1,887,327 km (0.095 R)
• M6: 2,188,168 km (0.107 R)
• M7: 2,958,298 km (0.098 R)
• M8: 4,252,319 km (0.059 R)
• M9: 4,555,554 km (0.049 R)
• M10: 9,032,121 km (0.108 R)
• M11: 10,852,877 km (0.114 R)
• M12: 11,600,417 km (0.066 R)
• M13: 12,523,137 km (0.045 R)
• M14: 13,345,327 km (0.079 R)
• M15: 13,744,604 km (0.116 R)
• M16: 15,366,992 km (0.115 R)
• M17: 16,028,065 km (0.1 R)
• M18: 17,763,550 km (0.112 R)
• M19: 18,430,308 km (0.096 R)
• M20: 20,398,866 km (0.084 R)
• M21: 21,062,632 km (0.062 R)
• M22: 22,085,283 km (0.118 R)
• M23: 22,785,252 km (0.113 R)
• M24: 23,212,204 km (0.072 R)
• M25: 24,973,869 km (0.058 R)
• M26: 25,351,902 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 181.9

Radius: 5.6

Gravity: 5.8 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 6.82 AU - 7.02 AU

Year: 11574 Days

Day: 22.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 70,101,574 km

• M1: 89,011 km (0.041 R)
• M2: 305,778 km (0.063 R)
• M3: 538,253 km (0.108 R)
• M4: 1,201,271 km (0.097 R)
• M5: 1,425,518 km (0.098 R)
• M6: 2,783,268 km (0.096 R)
• M7: 2,976,549 km (0.038 R)
• M8: 3,936,369 km (0.092 R)
• M9: 5,739,472 km (0.061 R)
• M10: 6,182,730 km (0.049 R)
• M11: 8,464,248 km (0.118 R)
• M12: 8,954,629 km (0.071 R)
• M13: 9,637,843 km (0.101 R)
• M14: 10,447,317 km (0.113 R)
• M15: 11,497,045 km (0.075 R)
• M16: 13,092,955 km (0.046 R)
• M17: 13,309,124 km (0.102 R)
• M18: 14,948,118 km (0.091 R)
• M19: 16,215,811 km (0.091 R)
• M20: 23,010,097 km (0.063 R)
• M21: 24,205,983 km (0.103 R)
• M22: 32,658,562 km (0.081 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 857.4

Radius: 5.2

Gravity: 31.71 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 7.79 AU - 8.45 AU

Year: 14712 Days

Day: 18.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 70,101,574 km

• M1: 81,381 km (0.115 R)
• M2: 343,327 km (0.101 R)
• M3: 656,735 km (0.114 R)
• M4: 1,279,062 km (0.11 R)
• M5: 1,761,066 km (0.115 R)
• M6: 2,151,217 km (0.111 R)
• M7: 3,933,826 km (0.064 R)
• M8: 5,372,209 km (0.1 R)
• M9: 7,493,507 km (0.115 R)
• M10: 7,775,050 km (0.081 R)
• M11: 12,362,469 km (0.115 R)
• M12: 16,128,894 km (0.119 R)
• M13: 16,440,806 km (0.103 R)
• M14: 16,836,343 km (0.109 R)
• M15: 20,052,547 km (0.103 R)
• M16: 25,820,892 km (0.119 R)
• M17: 28,566,611 km (0.102 R)
• M18: 32,110,734 km (0.051 R)
• M19: 33,480,303 km (0.099 R)
• M20: 44,785,863 km (0.089 R)
• M21: 46,336,744 km (0.057 R)
• M22: 50,204,148 km (0.077 R)
• M23: 50,869,110 km (0.099 R)
• M24: 64,446,015 km (0.076 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 754.4

Radius: 6.3

Gravity: 19.01 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 8.36 AU - 9.42 AU

Year: 16853 Days

Day: 21.1 Hours

Environment

Temp: -236 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 70,101,574 km

• M1: 81,680 km (0.111 R)
• M2: 404,513 km (0.104 R)
• M3: 708,496 km (0.064 R)
• M4: 1,366,726 km (0.097 R)
• M5: 1,682,378 km (0.097 R)
• M6: 2,504,418 km (0.116 R)
• M7: 2,854,926 km (0.082 R)
• M8: 4,012,364 km (0.11 R)
• M9: 4,232,124 km (0.064 R)
• M10: 5,155,891 km (0.061 R)
• M11: 6,717,842 km (0.088 R)
• M12: 11,856,080 km (0.107 R)
• M13: 12,775,060 km (0.039 R)
• M14: 13,251,978 km (0.103 R)
• M15: 15,052,687 km (0.108 R)
• M16: 15,355,174 km (0.079 R)
• M17: 16,525,778 km (0.102 R)
• M18: 18,693,900 km (0.067 R)
• M19: 22,782,858 km (0.076 R)
• M20: 25,566,426 km (0.119 R)
• M21: 27,318,516 km (0.114 R)
• M22: 29,383,715 km (0.051 R)
• M23: 31,304,701 km (0.086 R)
• M24: 34,865,429 km (0.085 R)
• M25: 35,795,928 km (0.04 R)
• M26: 42,929,802 km (0.115 R)
• M27: 44,152,615 km (0.087 R)
• M28: 51,295,614 km (0.118 R)
• M29: 51,637,445 km (0.075 R)
• M30: 51,980,772 km (0.109 R)
• M31: 52,498,680 km (0.043 R)
• M32: 65,380,253 km (0.037 R)
• M33: 65,581,014 km (0.101 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: 424 - 18,827 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit