🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.69

Radius: 1.23

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.52 AU - 0.54 AU

Year: 249 Days

Day: 35.4 Hours

Environment

Temp: -112 °C

Axial Tilt: 4.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 48,113,336 km

• M1: 80,334 km (0.046 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 849.9

Radius: 8.9

Gravity: 10.73 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.61 AU - 0.79 AU

Year: 378 Days

Day: 12.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 48,113,336 km

• M1: 111,002 km (0.087 R)
• M2: 461,509 km (0.11 R)
• M3: 764,146 km (0.074 R)
• M4: 1,383,631 km (0.043 R)
• M5: 2,130,722 km (0.112 R)
• M6: 2,531,346 km (0.103 R)
• M7: 2,822,313 km (0.081 R)
• M8: 3,169,380 km (0.062 R)
• M9: 3,545,021 km (0.052 R)
• M10: 3,884,907 km (0.103 R)
• M11: 4,659,674 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 747.1

Radius: 9.3

Gravity: 8.64 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.93 AU - 1.41 AU

Year: 817 Days

Day: 9.9 Hours

Environment

Temp: -173 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 48,113,336 km

• M1: 115,789 km (0.112 R)
• M2: 473,178 km (0.086 R)
• M3: 840,142 km (0.079 R)
• M4: 1,162,375 km (0.119 R)
• M5: 1,761,814 km (0.049 R)
• M6: 2,464,924 km (0.119 R)
• M7: 2,777,584 km (0.077 R)
• M8: 3,526,022 km (0.09 R)
• M9: 4,159,270 km (0.105 R)
• M10: 4,571,113 km (0.063 R)
• M11: 5,534,523 km (0.096 R)
• M12: 6,033,432 km (0.119 R)
• M13: 7,213,759 km (0.094 R)
• M14: 7,591,494 km (0.097 R)
• M15: 8,057,042 km (0.083 R)
• M16: 9,154,043 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464.5

Radius: 12.2

Gravity: 3.12 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 1.05 AU - 1.29 AU

Year: 817 Days

Day: 6.7 Hours

Environment

Temp: -167 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 48,113,336 km

• M1: 156,629 km (0.035 R)
• M2: 616,642 km (0.086 R)
• M3: 1,153,400 km (0.106 R)
• M4: 2,032,437 km (0.098 R)
• M5: 4,074,597 km (0.094 R)
• M6: 4,728,938 km (0.1 R)
• M7: 5,220,816 km (0.039 R)
• M8: 6,307,645 km (0.063 R)
• M9: 7,097,970 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602.5

Radius: 11.6

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.2 AU - 1.76 AU

Year: 1163 Days

Day: 13.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 48,113,336 km

• M1: 144,212 km (0.116 R)
• M2: 774,767 km (0.075 R)
• M3: 1,161,179 km (0.111 R)
• M4: 1,715,289 km (0.104 R)
• M5: 2,475,994 km (0.105 R)
• M6: 3,054,489 km (0.116 R)
• M7: 3,538,588 km (0.105 R)
• M8: 4,140,121 km (0.085 R)
• M9: 4,680,319 km (0.039 R)
• M10: 5,507,146 km (0.088 R)
• M11: 6,634,366 km (0.044 R)
• M12: 7,857,628 km (0.082 R)
• M13: 8,495,663 km (0.107 R)
• M14: 10,682,335 km (0.035 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 865.4

Radius: 13

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 2.26 AU - 2.74 AU

Year: 2552 Days

Day: 7.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 48,113,336 km

• M1: 161,715 km (0.109 R)
• M2: 666,159 km (0.041 R)
• M3: 1,087,277 km (0.088 R)
• M4: 1,795,025 km (0.119 R)
• M5: 2,954,558 km (0.088 R)
• M6: 3,437,310 km (0.098 R)
• M7: 4,607,914 km (0.119 R)
• M8: 5,948,610 km (0.1 R)
• M9: 7,441,596 km (0.12 R)
• M10: 8,443,304 km (0.072 R)
• M11: 10,054,772 km (0.088 R)
• M12: 10,793,486 km (0.106 R)
• M13: 11,237,642 km (0.061 R)
• M14: 13,274,268 km (0.114 R)
• M15: 13,784,546 km (0.063 R)
• M16: 14,259,669 km (0.091 R)
• M17: 14,795,080 km (0.118 R)
• M18: 17,344,527 km (0.109 R)
• M19: 20,602,020 km (0.034 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 404.2

Radius: 5.7

Gravity: 12.44 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 7.26 AU - 7.72 AU

Year: 13235 Days

Day: 22.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 48,113,336 km

• M1: 70,909 km (0.074 R)
• M2: 258,206 km (0.085 R)
• M3: 667,356 km (0.109 R)
• M4: 1,167,761 km (0.113 R)
• M5: 3,121,808 km (0.116 R)
• M6: 3,681,903 km (0.097 R)
• M7: 3,972,422 km (0.101 R)
• M8: 4,249,776 km (0.087 R)
• M9: 5,063,290 km (0.046 R)
• M10: 7,073,586 km (0.107 R)
• M11: 8,122,416 km (0.043 R)
• M12: 11,942,697 km (0.103 R)
• M13: 15,693,864 km (0.075 R)
• M14: 17,100,533 km (0.082 R)
• M15: 22,948,164 km (0.093 R)
• M16: 25,884,770 km (0.058 R)
• M17: 28,143,997 km (0.033 R)
• M18: 28,959,605 km (0.103 R)
• M19: 29,165,900 km (0.064 R)
• M20: 31,610,030 km (0.052 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 172.3

Radius: 5.1

Gravity: 6.62 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 7.81 AU - 11.95 AU

Year: 20052 Days

Day: 20.1 Hours

Environment

Temp: -221 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 48,113,336 km

• M1: 154,983 km (0.081 R)
• M2: 823,237 km (0.119 R)
• M3: 2,517,134 km (0.06 R)
• M4: 3,350,843 km (0.089 R)
• M5: 3,597,978 km (0.114 R)
• M6: 4,212,526 km (0.097 R)
• M7: 4,589,513 km (0.083 R)
• M8: 8,822,235 km (0.099 R)
• M9: 9,535,817 km (0.118 R)
• M10: 13,877,596 km (0.084 R)
• M11: 17,997,970 km (0.052 R)
• M12: 27,142,439 km (0.039 R)
• M13: 39,213,491 km (0.116 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 268 - 18,915 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit