🌌 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: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.47 AU - 0.55 AU

Year: 239 Days

Day: 37.8 Hours

Environment

Temp: -126 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 64,073,843 km

• M1: 157,078 km (0.058 R)
• M2: 216,468 km (0.096 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 69

Radius: 9.6

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.62 AU - 0.8 AU

Year: 392 Days

Day: 10.7 Hours

Environment

Temp: -131 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 64,073,843 km

• M1: 119,379 km (0.072 R)
• M2: 480,957 km (0.087 R)
• M3: 961,914 km (0.116 R)
• M4: 1,271,582 km (0.117 R)
• M5: 1,575,266 km (0.105 R)
• M6: 1,921,884 km (0.117 R)
• M7: 2,319,814 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 570.4

Radius: 10.3

Gravity: 5.38 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.64 AU - 1.04 AU

Year: 505 Days

Day: 6.6 Hours

Environment

Temp: -148 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,073,843 km

• M1: 128,505 km (0.06 R)
• M2: 472,430 km (0.095 R)
• M3: 966,701 km (0.091 R)
• M4: 2,224,221 km (0.109 R)
• M5: 2,724,626 km (0.107 R)
• M6: 3,503,582 km (0.1 R)
• M7: 4,101,076 km (0.063 R)
• M8: 4,541,043 km (0.096 R)
• M9: 4,934,187 km (0.112 R)
• M10: 5,268,388 km (0.043 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 615.8

Radius: 14.4

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.08 AU - 1.78 AU

Year: 1122 Days

Day: 7.6 Hours

Environment

Temp: -177 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 64,073,843 km

• M1: 179,218 km (0.067 R)
• M2: 652,546 km (0.086 R)
• M3: 1,182,422 km (0.113 R)
• M4: 1,719,029 km (0.113 R)
• M5: 2,222,276 km (0.115 R)
• M6: 2,700,840 km (0.084 R)
• M7: 3,491,465 km (0.103 R)
• M8: 4,161,514 km (0.09 R)
• M9: 5,104,429 km (0.048 R)
• M10: 6,339,359 km (0.108 R)
• M11: 6,932,814 km (0.118 R)
• M12: 7,944,395 km (0.094 R)
• M13: 8,553,707 km (0.079 R)
• M14: 9,136,989 km (0.057 R)
• M15: 10,046,843 km (0.052 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 252.6

Radius: 12.7

Gravity: 1.57 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.65 AU - 2.23 AU

Year: 1773 Days

Day: 5.1 Hours

Environment

Temp: -190 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 64,073,843 km

• M1: 158,275 km (0.1 R)
• M2: 593,006 km (0.059 R)
• M3: 3,161,601 km (0.067 R)
• M4: 5,348,124 km (0.083 R)
• M5: 8,617,436 km (0.036 R)
• M6: 9,792,976 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.5

Radius: 9.1

Gravity: 0.27 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.49 AU - 2.47 AU

Year: 1828 Days

Day: 5.5 Hours

Environment

Temp: -191 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 64,073,843 km

• M1: 114,592 km (0.056 R)
• M2: 406,457 km (0.068 R)
• M3: 702,661 km (0.106 R)
• M4: 1,146,219 km (0.118 R)
• M5: 1,916,199 km (0.094 R)
• M6: 3,553,249 km (0.106 R)
• M7: 4,320,686 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 854.1

Radius: 10.6

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 2.86 AU - 3.68 AU

Year: 3879 Days

Day: 9.3 Hours

Environment

Temp: -203 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 64,073,843 km

• M1: 131,945 km (0.109 R)
• M2: 518,805 km (0.089 R)
• M3: 921,972 km (0.044 R)
• M4: 1,292,675 km (0.077 R)
• M5: 1,751,791 km (0.057 R)
• M6: 2,243,070 km (0.094 R)
• M7: 4,337,141 km (0.067 R)
• M8: 5,460,023 km (0.099 R)
• M9: 7,911,783 km (0.091 R)
• M10: 9,181,270 km (0.032 R)
• M11: 11,837,979 km (0.105 R)
• M12: 16,087,755 km (0.097 R)
• M13: 16,433,775 km (0.087 R)
• M14: 17,140,774 km (0.081 R)
• M15: 18,114,806 km (0.094 R)
• M16: 24,672,429 km (0.105 R)
• M17: 26,469,249 km (0.11 R)
• M18: 26,952,001 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.2

Radius: 14.7

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 3.45 AU - 4.61 AU

Year: 5307 Days

Day: 10.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 64,073,843 km

• M1: 183,706 km (0.105 R)
• M2: 804,687 km (0.113 R)
• M3: 1,321,248 km (0.086 R)
• M4: 2,281,368 km (0.094 R)
• M5: 3,131,233 km (0.06 R)
• M6: 3,709,429 km (0.114 R)
• M7: 5,671,405 km (0.081 R)
• M8: 6,362,547 km (0.091 R)
• M9: 6,985,921 km (0.097 R)
• M10: 7,585,061 km (0.087 R)
• M11: 11,408,483 km (0.088 R)
• M12: 12,467,187 km (0.116 R)
• M13: 15,400,353 km (0.109 R)
• M14: 21,396,983 km (0.077 R)
• M15: 23,005,909 km (0.119 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 971.2

Radius: 7.5

Gravity: 17.27 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 6.15 AU - 9.35 AU

Year: 14153 Days

Day: 23.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 88.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 64,073,843 km

• M1: 93,349 km (0.099 R)
• M2: 420,520 km (0.095 R)
• M3: 668,702 km (0.11 R)
• M4: 1,383,481 km (0.106 R)
• M5: 2,212,104 km (0.079 R)
• M6: 2,551,541 km (0.109 R)
• M7: 3,282,327 km (0.093 R)
• M8: 3,639,417 km (0.077 R)
• M9: 6,311,684 km (0.104 R)
• M10: 11,310,048 km (0.078 R)
• M11: 11,557,034 km (0.098 R)
• M12: 15,631,631 km (0.097 R)
• M13: 19,405,237 km (0.113 R)
• M14: 21,033,909 km (0.049 R)
• M15: 21,313,957 km (0.098 R)
• M16: 21,881,531 km (0.093 R)
• M17: 29,850,460 km (0.103 R)
• M18: 31,040,511 km (0.075 R)
• M19: 39,984,968 km (0.115 R)
• M20: 43,059,802 km (0.114 R)
• M21: 47,080,544 km (0.097 R)
• M22: 58,029,313 km (0.115 R)
• M23: 61,009,452 km (0.078 R)
• M24: 61,388,982 km (0.092 R)
• M25: 62,152,679 km (0.08 R)
• M26: 64,089,972 km (0.076 R)

Planet 10 - Ice Giant

Semi-Major Axis: 11.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 278

Radius: 7.3

Gravity: 5.22 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 10.1 AU - 12.1 AU

Year: 24260 Days

Day: 24.2 Hours

Environment

Temp: -238 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,073,843 km

• M1: 91,404 km (0.061 R)
• M2: 602,580 km (0.071 R)
• M3: 1,683,724 km (0.104 R)
• M4: 2,672,716 km (0.075 R)
• M5: 3,713,767 km (0.047 R)
• M6: 4,341,181 km (0.094 R)
• M7: 4,763,795 km (0.08 R)
• M8: 7,757,398 km (0.107 R)
• M9: 8,628,207 km (0.1 R)
• M10: 13,098,341 km (0.089 R)
• M11: 25,704,205 km (0.111 R)
• M12: 30,221,163 km (0.053 R)
• M13: 30,454,087 km (0.109 R)
• M14: 30,688,208 km (0.103 R)
• M15: 51,224,704 km (0.11 R)
• M16: 57,409,380 km (0.12 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 457 - 17,460 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit