🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.39

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.49 AU - 0.69 AU

Year: 297 Days

Day: 33.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 43.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 11,243,723 km

• M1: 241,900 km (0.089 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454

Radius: 10

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.62 AU - 0.76 AU

Year: 376 Days

Day: 8.9 Hours

Environment

Temp: -135 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 11,243,723 km

• M1: 124,316 km (0.078 R)
• M2: 439,070 km (0.062 R)
• M3: 1,196,933 km (0.086 R)
• M4: 1,643,931 km (0.076 R)
• M5: 2,066,096 km (0.084 R)
• M6: 2,754,097 km (0.079 R)
• M7: 3,131,083 km (0.097 R)
• M8: 3,656,770 km (0.105 R)
• M9: 4,304,529 km (0.118 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.7

Radius: 14.1

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.67 AU - 0.93 AU

Year: 469 Days

Day: 5 Hours

Environment

Temp: -156 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 11,243,723 km

• M1: 175,329 km (0.11 R)
• M2: 719,267 km (0.086 R)
• M3: 1,437,486 km (0.068 R)
• M4: 2,033,484 km (0.095 R)
• M5: 2,626,789 km (0.111 R)
• M6: 3,922,755 km (0.119 R)
• M7: 4,421,814 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.5

Radius: 11.4

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.87 AU - 0.97 AU

Year: 579 Days

Day: 6 Hours

Environment

Temp: -155 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 11,243,723 km

• M1: 141,968 km (0.112 R)
• M2: 1,224,159 km (0.1 R)
• M3: 1,586,635 km (0.107 R)
• M4: 2,130,274 km (0.058 R)
• M5: 2,724,327 km (0.102 R)
• M6: 3,402,454 km (0.081 R)
• M7: 3,858,877 km (0.1 R)
• M8: 4,642,321 km (0.098 R)
• M9: 5,142,427 km (0.11 R)
• M10: 5,661,531 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 303.4

Radius: 14.8

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.84 AU - 1.34 AU

Year: 747 Days

Day: 5.4 Hours

Environment

Temp: -159 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 11,243,723 km

• M1: 186,399 km (0.1 R)
• M2: 749,934 km (0.081 R)
• M3: 1,833,920 km (0.092 R)
• M4: 2,882,003 km (0.119 R)
• M5: 3,603,813 km (0.084 R)
• M6: 4,895,740 km (0.118 R)
• M7: 5,717,780 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 571.6

Radius: 12.7

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1 AU - 1.38 AU

Year: 852 Days

Day: 13.2 Hours

Environment

Temp: -174 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 11,243,723 km

• M1: 157,975 km (0.116 R)
• M2: 581,936 km (0.104 R)
• M3: 981,960 km (0.114 R)
• M4: 1,434,793 km (0.105 R)
• M5: 1,831,377 km (0.086 R)
• M6: 2,292,438 km (0.085 R)
• M7: 3,563,571 km (0.07 R)
• M8: 4,027,923 km (0.114 R)
• M9: 4,648,903 km (0.097 R)
• M10: 5,518,665 km (0.029 R)
• M11: 6,265,757 km (0.049 R)
• M12: 7,034,541 km (0.076 R)
• M13: 8,131,991 km (0.051 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 121.6

Radius: 11.7

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 2.11 AU - 2.31 AU

Year: 2155 Days

Day: 12.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 11,243,723 km

• M1: 145,559 km (0.08 R)
• M2: 523,742 km (0.095 R)
• M3: 1,079,947 km (0.11 R)
• M4: 1,622,539 km (0.109 R)
• M5: 2,016,131 km (0.064 R)
• M6: 2,610,932 km (0.093 R)
• M7: 3,765,378 km (0.073 R)
• M8: 5,880,094 km (0.071 R)
• M9: 7,892,185 km (0.058 R)
• M10: 8,271,865 km (0.057 R)
• M11: 8,904,813 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 68.3

Radius: 13.4

Gravity: 0.38 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 2.78 AU - 3.44 AU

Year: 3598 Days

Day: 13.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 11,243,723 km

• M1: 171,888 km (0.085 R)
• M2: 1,035,068 km (0.116 R)
• M3: 1,501,963 km (0.091 R)
• M4: 3,070,496 km (0.062 R)
• M5: 4,933,887 km (0.108 R)
• M6: 9,754,080 km (0.057 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 269 - 19,505 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit