🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.42 AU - 0.6 AU

Year: 239 Days

Day: 34.9 Hours

Environment

Temp: -108 °C

Axial Tilt: 14.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 32,351,553 km

• M1: 33,959 km (0.081 R)
• M2: 297,700 km (0.118 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.56

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.54 AU - 0.54 AU

Year: 260 Days

Day: 39.2 Hours

Environment

Temp: -116 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.56

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.43 AU - 0.67 AU

Year: 268 Days

Day: 34.7 Hours

Environment

Temp: -129 °C

Axial Tilt: 18.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.56 AU - 0.64 AU

Year: 305 Days

Day: 21.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 47.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.76

Radius: 1.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.53 AU - 0.69 AU

Year: 313 Days

Day: 27.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 4.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 537.1

Radius: 13.3

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.7 AU - 0.92 AU

Year: 478 Days

Day: 6.5 Hours

Environment

Temp: -154 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 32,351,553 km

• M1: 165,455 km (0.06 R)
• M2: 581,637 km (0.107 R)
• M3: 1,012,478 km (0.029 R)
• M4: 1,607,280 km (0.095 R)
• M5: 2,357,513 km (0.094 R)
• M6: 2,912,820 km (0.067 R)
• M7: 3,423,996 km (0.102 R)
• M8: 4,060,834 km (0.073 R)
• M9: 4,614,496 km (0.115 R)
• M10: 5,589,126 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 213.6

Radius: 10.1

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.87 AU - 1.27 AU

Year: 726 Days

Day: 11.3 Hours

Environment

Temp: -164 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 32,351,553 km

• M1: 125,662 km (0.099 R)
• M2: 476,918 km (0.107 R)
• M3: 804,687 km (0.083 R)
• M4: 1,308,533 km (0.089 R)
• M5: 1,672,953 km (0.034 R)
• M6: 2,422,139 km (0.047 R)
• M7: 2,781,024 km (0.078 R)
• M8: 3,220,393 km (0.069 R)
• M9: 4,051,559 km (0.091 R)
• M10: 4,531,918 km (0.064 R)
• M11: 4,913,243 km (0.076 R)
• M12: 5,252,531 km (0.058 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 867.7

Radius: 9.3

Gravity: 10.03 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.5 AU - 2.3 AU

Year: 1718 Days

Day: 14.9 Hours

Environment

Temp: -179 °C

Axial Tilt: 134.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 32,351,553 km

• M1: 115,639 km (0.064 R)
• M2: 549,623 km (0.113 R)
• M3: 851,960 km (0.066 R)
• M4: 1,253,032 km (0.097 R)
• M5: 1,565,691 km (0.031 R)
• M6: 1,953,599 km (0.052 R)
• M7: 3,093,684 km (0.083 R)
• M8: 3,484,434 km (0.078 R)
• M9: 4,248,131 km (0.054 R)
• M10: 5,275,270 km (0.115 R)
• M11: 5,835,065 km (0.043 R)
• M12: 6,204,721 km (0.057 R)
• M13: 6,963,930 km (0.064 R)
• M14: 7,351,987 km (0.114 R)
• M15: 7,931,380 km (0.083 R)
• M16: 9,648,464 km (0.114 R)
• M17: 10,378,801 km (0.119 R)
• M18: 11,108,240 km (0.043 R)
• M19: 13,845,133 km (0.109 R)
• M20: 14,504,262 km (0.098 R)
• M21: 14,909,821 km (0.11 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 646.6

Radius: 14.2

Gravity: 3.21 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 3.35 AU - 5.11 AU

Year: 5707 Days

Day: 8.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 32,351,553 km

• M1: 176,675 km (0.115 R)
• M2: 697,575 km (0.113 R)
• M3: 1,475,035 km (0.109 R)
• M4: 2,699,194 km (0.088 R)
• M5: 3,517,046 km (0.058 R)
• M6: 4,031,962 km (0.087 R)
• M7: 5,529,736 km (0.116 R)
• M8: 6,954,057 km (0.086 R)
• M9: 7,956,662 km (0.117 R)
• M10: 9,595,955 km (0.062 R)
• M11: 10,838,515 km (0.071 R)
• M12: 12,086,012 km (0.025 R)
• M13: 17,149,302 km (0.112 R)
• M14: 20,641,664 km (0.107 R)
• M15: 21,953,787 km (0.106 R)
• M16: 22,554,422 km (0.07 R)
• M17: 23,710,365 km (0.11 R)
• M18: 24,422,750 km (0.069 R)
• M19: 28,731,917 km (0.074 R)
• M20: 30,552,224 km (0.084 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 544 - 12,491 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit