🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.32

Radius: 0.63

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.47 AU - 0.65 AU

Year: 187 Days

Day: 25.9 Hours

Environment

Temp: 28 °C

Axial Tilt: 6.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 81,771,344 km

• M1: 98,435 km (0.062 R)
• M2: 248,183 km (0.105 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.35

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.63 AU - 0.63 AU

Year: 223 Days

Day: 37.3 Hours

Environment

Temp: -8 °C

Axial Tilt: 16.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Asteroid Belt

Center: 1.73 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83.9

Radius: 8.3

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2.46 AU - 3.2 AU

Year: 2124 Days

Day: 6.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 81,771,344 km

• M1: 103,372 km (0.035 R)
• M2: 441,015 km (0.066 R)
• M3: 1,240,166 km (0.086 R)
• M4: 1,526,646 km (0.074 R)
• M5: 2,297,823 km (0.113 R)
• M6: 3,851,248 km (0.119 R)
• M7: 7,673,324 km (0.029 R)
• M8: 8,006,927 km (0.109 R)
• M9: 8,325,271 km (0.08 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 504.7

Radius: 11.9

Gravity: 3.56 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.9 AU - 4.02 AU

Year: 2872 Days

Day: 14.8 Hours

Environment

Temp: -156 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 81,771,344 km

• M1: 149,598 km (0.044 R)
• M2: 549,623 km (0.09 R)
• M3: 1,165,816 km (0.116 R)
• M4: 1,573,171 km (0.042 R)
• M5: 1,955,992 km (0.057 R)
• M6: 2,541,668 km (0.051 R)
• M7: 3,092,038 km (0.06 R)
• M8: 3,592,294 km (0.093 R)
• M9: 4,845,325 km (0.09 R)
• M10: 5,621,589 km (0.097 R)
• M11: 6,699,441 km (0.097 R)
• M12: 8,355,490 km (0.075 R)
• M13: 10,344,094 km (0.025 R)
• M14: 10,954,902 km (0.104 R)
• M15: 11,509,013 km (0.069 R)
• M16: 12,123,411 km (0.111 R)
• M17: 12,759,502 km (0.104 R)
• M18: 13,240,010 km (0.114 R)
• M19: 16,381,565 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.6

Radius: 8.8

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 6.68 AU - 8.06 AU

Year: 8928 Days

Day: 8.7 Hours

Environment

Temp: -188 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 81,771,344 km

• M1: 112,946 km (0.116 R)
• M2: 511,625 km (0.051 R)
• M3: 1,477,129 km (0.05 R)
• M4: 1,906,924 km (0.12 R)
• M5: 2,847,446 km (0.086 R)
• M6: 4,773,369 km (0.074 R)
• M7: 6,780,374 km (0.114 R)
• M8: 7,668,836 km (0.075 R)
• M9: 15,264,668 km (0.058 R)
• M10: 18,522,161 km (0.116 R)
• M11: 22,555,619 km (0.12 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 208.3

Radius: 8.9

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 6.54 AU - 9.56 AU

Year: 10192 Days

Day: 10.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 81,771,344 km

• M1: 130,599 km (0.094 R)
• M2: 461,809 km (0.039 R)
• M3: 1,553,873 km (0.086 R)
• M4: 4,818,248 km (0.084 R)
• M5: 5,120,436 km (0.048 R)
• M6: 5,793,477 km (0.08 R)
• M7: 6,524,113 km (0.114 R)
• M8: 8,921,867 km (0.1 R)
• M9: 9,336,852 km (0.1 R)
• M10: 11,317,378 km (0.1 R)
• M11: 16,089,849 km (0.077 R)
• M12: 22,356,654 km (0.091 R)
• M13: 22,968,060 km (0.119 R)
• M14: 26,617,800 km (0.096 R)
• M15: 26,959,930 km (0.1 R)
• M16: 28,268,612 km (0.097 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 130.9

Radius: 5.5

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 12.4 AU - 16.94 AU

Year: 25073 Days

Day: 19.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 81,771,344 km

• M1: 68,815 km (0.091 R)
• M2: 411,993 km (0.062 R)
• M3: 873,053 km (0.076 R)
• M4: 1,047,933 km (0.091 R)
• M5: 1,799,214 km (0.067 R)
• M6: 2,139,848 km (0.08 R)
• M7: 2,403,140 km (0.101 R)
• M8: 3,325,112 km (0.116 R)
• M9: 5,021,402 km (0.094 R)
• M10: 6,660,845 km (0.107 R)
• M11: 9,149,256 km (0.11 R)
• M12: 11,505,273 km (0.088 R)
• M13: 13,470,540 km (0.103 R)
• M14: 16,068,606 km (0.116 R)
• M15: 17,150,947 km (0.087 R)
• M16: 26,613,611 km (0.098 R)
• M17: 28,849,949 km (0.051 R)
• M18: 31,318,763 km (0.083 R)
• M19: 33,808,670 km (0.064 R)
• M20: 41,796,299 km (0.095 R)
• M21: 45,371,089 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 391.5

Radius: 7.2

Gravity: 7.55 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 14.51 AU - 18.17 AU

Year: 29473 Days

Day: 21.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 81,771,344 km

• M1: 89,609 km (0.104 R)
• M2: 505,192 km (0.083 R)
• M3: 772,823 km (0.114 R)
• M4: 1,541,756 km (0.034 R)
• M5: 1,769,743 km (0.03 R)
• M6: 3,328,403 km (0.081 R)
• M7: 4,501,250 km (0.043 R)
• M8: 5,047,432 km (0.066 R)
• M9: 7,047,556 km (0.069 R)
• M10: 11,052,739 km (0.03 R)
• M11: 12,951,436 km (0.091 R)
• M12: 23,572,735 km (0.106 R)
• M13: 31,604,645 km (0.094 R)
• M14: 36,801,824 km (0.084 R)
• M15: 39,001,062 km (0.092 R)
• M16: 40,514,993 km (0.118 R)
• M17: 54,062,875 km (0.1 R)
• M18: 56,707,616 km (0.097 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 222 - 14,809 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit