🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.54 AU - 0.78 AU

Year: 352 Days

Day: 13.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 4.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 621.5

Radius: 12.7

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 0.99 AU - 1.29 AU

Year: 798 Days

Day: 9.1 Hours

Environment

Temp: -156 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,541,181 km

• M1: 157,975 km (0.105 R)
• M2: 674,537 km (0.081 R)
• M3: 1,258,716 km (0.056 R)
• M4: 2,956,952 km (0.12 R)
• M5: 3,390,037 km (0.076 R)
• M6: 3,793,054 km (0.114 R)
• M7: 5,474,384 km (0.117 R)
• M8: 6,460,384 km (0.12 R)
• M9: 7,422,747 km (0.057 R)
• M10: 8,528,724 km (0.12 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 639.1

Radius: 13.3

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.93 AU - 1.41 AU

Year: 830 Days

Day: 9.9 Hours

Environment

Temp: -162 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 55,541,181 km

• M1: 165,904 km (0.051 R)
• M2: 900,430 km (0.106 R)
• M3: 1,381,387 km (0.098 R)
• M4: 2,008,202 km (0.101 R)
• M5: 2,501,875 km (0.096 R)
• M6: 3,856,035 km (0.094 R)
• M7: 5,313,567 km (0.061 R)
• M8: 6,332,627 km (0.094 R)
• M9: 6,911,122 km (0.114 R)
• M10: 7,362,160 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406.3

Radius: 12

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.53 AU - 1.73 AU

Year: 1365 Days

Day: 11.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 55,541,181 km

• M1: 150,495 km (0.096 R)
• M2: 1,174,044 km (0.109 R)
• M3: 1,862,942 km (0.115 R)
• M4: 2,333,577 km (0.101 R)
• M5: 4,450,387 km (0.059 R)
• M6: 6,256,781 km (0.05 R)
• M7: 6,776,185 km (0.064 R)
• M8: 10,489,354 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 648.6

Radius: 9.6

Gravity: 7.04 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 3.53 AU - 4.07 AU

Year: 4859 Days

Day: 5.8 Hours

Environment

Temp: -209 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 55,541,181 km

• M1: 128,953 km (0.055 R)
• M2: 550,670 km (0.073 R)
• M3: 1,016,368 km (0.099 R)
• M4: 1,448,706 km (0.106 R)
• M5: 1,798,765 km (0.1 R)
• M6: 2,101,700 km (0.092 R)
• M7: 2,812,739 km (0.079 R)
• M8: 3,146,791 km (0.111 R)
• M9: 3,762,835 km (0.07 R)
• M10: 4,432,884 km (0.09 R)
• M11: 4,861,332 km (0.119 R)
• M12: 6,315,274 km (0.11 R)
• M13: 6,631,374 km (0.073 R)
• M14: 6,991,157 km (0.029 R)
• M15: 7,398,662 km (0.065 R)
• M16: 8,525,134 km (0.119 R)
• M17: 9,472,836 km (0.077 R)
• M18: 12,245,035 km (0.086 R)
• M19: 14,134,904 km (0.117 R)
• M20: 14,787,450 km (0.075 R)
• M21: 16,270,414 km (0.053 R)
• M22: 16,987,137 km (0.076 R)
• M23: 17,850,018 km (0.12 R)
• M24: 18,741,621 km (0.098 R)
• M25: 21,452,933 km (0.048 R)
• M26: 23,650,675 km (0.085 R)
• M27: 24,184,291 km (0.116 R)
• M28: 25,753,273 km (0.089 R)
• M29: 26,074,909 km (0.069 R)
• M30: 26,808,686 km (0.103 R)
• M31: 27,808,449 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.2

Radius: 14.4

Gravity: 2.79 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 3.84 AU - 3.88 AU

Year: 4975 Days

Day: 13.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 55,541,181 km

• M1: 179,218 km (0.068 R)
• M2: 806,482 km (0.102 R)
• M3: 2,427,525 km (0.09 R)
• M4: 2,913,718 km (0.106 R)
• M5: 4,558,247 km (0.072 R)
• M6: 5,527,193 km (0.111 R)
• M7: 7,149,581 km (0.101 R)
• M8: 8,646,308 km (0.068 R)
• M9: 9,228,693 km (0.059 R)
• M10: 9,754,679 km (0.031 R)
• M11: 10,215,141 km (0.044 R)
• M12: 11,225,375 km (0.09 R)
• M13: 13,858,747 km (0.115 R)
• M14: 16,000,539 km (0.034 R)
• M15: 17,730,489 km (0.049 R)
• M16: 19,058,918 km (0.038 R)
• M17: 22,415,745 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 245.8

Radius: 14.1

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 4.59 AU - 6.13 AU

Year: 8141 Days

Day: 9.2 Hours

Environment

Temp: -209 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 55,541,181 km

• M1: 179,517 km (0.117 R)
• M2: 659,128 km (0.117 R)
• M3: 1,599,052 km (0.088 R)
• M4: 2,538,825 km (0.032 R)
• M5: 3,105,353 km (0.07 R)
• M6: 3,691,178 km (0.11 R)
• M7: 5,033,520 km (0.117 R)
• M8: 6,331,281 km (0.102 R)
• M9: 7,075,680 km (0.09 R)
• M10: 7,521,931 km (0.119 R)
• M11: 10,301,010 km (0.101 R)
• M12: 11,286,112 km (0.111 R)
• M13: 13,032,219 km (0.054 R)
• M14: 16,571,555 km (0.09 R)
• M15: 24,694,869 km (0.104 R)
• M16: 28,646,197 km (0.063 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 16.4

Radius: 3.5

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 5.6 AU - 6.72 AU

Year: 10030 Days

Day: 20.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 55,541,181 km

• M1: 43,533 km (0.096 R)
• M2: 765,343 km (0.114 R)
• M3: 1,317,808 km (0.056 R)
• M4: 3,009,161 km (0.12 R)
• M5: 3,332,143 km (0.119 R)
• M6: 3,956,714 km (0.064 R)
• M7: 4,268,476 km (0.103 R)
• M8: 10,929,172 km (0.054 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 532

Radius: 5.3

Gravity: 18.94 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 7.26 AU - 8.24 AU

Year: 14153 Days

Day: 21.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 55,541,181 km

• M1: 65,973 km (0.089 R)
• M2: 242,199 km (0.041 R)
• M3: 572,361 km (0.109 R)
• M4: 785,838 km (0.056 R)
• M5: 1,052,271 km (0.097 R)
• M6: 1,405,023 km (0.04 R)
• M7: 1,702,573 km (0.079 R)
• M8: 1,952,701 km (0.108 R)
• M9: 2,675,857 km (0.091 R)
• M10: 3,086,054 km (0.088 R)
• M11: 4,921,620 km (0.088 R)
• M12: 7,599,273 km (0.105 R)
• M13: 8,139,321 km (0.117 R)
• M14: 8,996,816 km (0.063 R)
• M15: 9,345,977 km (0.067 R)
• M16: 10,231,746 km (0.108 R)
• M17: 14,404,929 km (0.105 R)
• M18: 15,300,870 km (0.065 R)
• M19: 16,453,821 km (0.087 R)
• M20: 19,587,448 km (0.107 R)
• M21: 20,258,544 km (0.102 R)
• M22: 23,097,014 km (0.097 R)
• M23: 27,313,579 km (0.078 R)
• M24: 35,845,894 km (0.091 R)
• M25: 36,975,807 km (0.037 R)
• M26: 39,042,651 km (0.097 R)
• M27: 39,703,873 km (0.118 R)
• M28: 41,870,499 km (0.101 R)
• M29: 47,930,111 km (0.113 R)
• M30: 52,920,696 km (0.105 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 207 - 19,020 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit