🌌 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: 2.42

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 0.47 AU - 0.59 AU

Year: 245 Days

Day: 33 Hours

Environment

Temp: -117 °C

Axial Tilt: 0.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.15

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.47 AU - 0.75 AU

Year: 303 Days

Day: 28.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 8.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 65,896,854 km

• M1: 676,182 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 285.1

Radius: 12.5

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.65 AU - 0.73 AU

Year: 364 Days

Day: 13.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 65,896,854 km

• M1: 155,432 km (0.106 R)
• M2: 568,173 km (0.088 R)
• M3: 1,178,831 km (0.088 R)
• M4: 2,018,374 km (0.106 R)
• M5: 2,669,275 km (0.102 R)
• M6: 3,333,938 km (0.046 R)
• M7: 3,777,346 km (0.098 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 963.2

Radius: 12.5

Gravity: 6.16 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.84 AU - 1.34 AU

Year: 724 Days

Day: 10.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 65,896,854 km

• M1: 170,093 km (0.092 R)
• M2: 778,208 km (0.114 R)
• M3: 1,201,420 km (0.056 R)
• M4: 2,319,665 km (0.04 R)
• M5: 2,937,953 km (0.114 R)
• M6: 3,535,147 km (0.106 R)
• M7: 4,693,334 km (0.087 R)
• M8: 5,341,542 km (0.11 R)
• M9: 5,826,239 km (0.068 R)
• M10: 6,255,884 km (0.094 R)
• M11: 7,156,463 km (0.049 R)
• M12: 8,242,244 km (0.112 R)
• M13: 8,838,242 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.6

Radius: 10.7

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 2.29 AU - 3.09 AU

Year: 2805 Days

Day: 9 Hours

Environment

Temp: -200 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 65,896,854 km

• M1: 134,040 km (0.084 R)
• M2: 689,497 km (0.061 R)
• M3: 1,302,399 km (0.113 R)
• M4: 1,820,756 km (0.062 R)
• M5: 2,303,209 km (0.12 R)
• M6: 3,308,507 km (0.111 R)
• M7: 4,088,959 km (0.105 R)
• M8: 4,421,664 km (0.074 R)
• M9: 4,944,060 km (0.048 R)
• M10: 5,437,583 km (0.097 R)
• M11: 6,013,086 km (0.097 R)
• M12: 7,145,841 km (0.028 R)
• M13: 8,795,008 km (0.054 R)
• M14: 9,968,604 km (0.094 R)
• M15: 10,721,231 km (0.092 R)
• M16: 11,092,682 km (0.027 R)
• M17: 12,789,122 km (0.092 R)
• M18: 13,165,061 km (0.115 R)
• M19: 15,483,529 km (0.096 R)

Asteroid Belt

Center: 4.8 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Ice Giant

Semi-Major Axis: 6.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 284.3

Radius: 4.1

Gravity: 16.91 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 5.89 AU - 7.91 AU

Year: 11524 Days

Day: 20.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 65,896,854 km

• M1: 86,767 km (0.035 R)
• M2: 374,443 km (0.112 R)
• M3: 628,161 km (0.099 R)
• M4: 798,105 km (0.083 R)
• M5: 988,543 km (0.096 R)
• M6: 1,153,699 km (0.051 R)
• M7: 2,071,482 km (0.064 R)
• M8: 3,486,378 km (0.11 R)
• M9: 3,921,409 km (0.091 R)
• M10: 4,556,452 km (0.087 R)
• M11: 4,782,644 km (0.111 R)
• M12: 5,257,468 km (0.107 R)
• M13: 6,581,110 km (0.09 R)
• M14: 9,959,029 km (0.055 R)
• M15: 10,583,152 km (0.046 R)
• M16: 10,829,988 km (0.115 R)
• M17: 12,721,953 km (0.052 R)
• M18: 19,623,949 km (0.086 R)
• M19: 20,526,025 km (0.078 R)
• M20: 22,412,454 km (0.105 R)
• M21: 22,574,618 km (0.081 R)
• M22: 23,648,431 km (0.12 R)
• M23: 24,755,605 km (0.1 R)
• M24: 27,627,585 km (0.088 R)
• M25: 28,189,774 km (0.114 R)
• M26: 31,519,972 km (0.052 R)
• M27: 36,095,124 km (0.068 R)
• M28: 37,105,657 km (0.109 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 472.1

Radius: 5.9

Gravity: 13.56 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 8.56 AU - 10.98 AU

Year: 19417 Days

Day: 19.2 Hours

Environment

Temp: -227 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 65,896,854 km

• M1: 76,145 km (0.084 R)
• M2: 286,779 km (0.103 R)
• M3: 700,567 km (0.104 R)
• M4: 1,487,601 km (0.076 R)
• M5: 2,615,120 km (0.095 R)
• M6: 3,018,287 km (0.109 R)
• M7: 4,413,736 km (0.086 R)
• M8: 4,710,239 km (0.112 R)
• M9: 5,090,816 km (0.084 R)
• M10: 5,491,439 km (0.1 R)
• M11: 5,680,530 km (0.103 R)
• M12: 7,770,113 km (0.074 R)
• M13: 9,762,458 km (0.099 R)
• M14: 11,757,345 km (0.103 R)
• M15: 14,505,608 km (0.093 R)
• M16: 27,072,278 km (0.119 R)
• M17: 35,444,822 km (0.066 R)
• M18: 37,846,616 km (0.106 R)
• M19: 40,497,191 km (0.112 R)
• M20: 41,504,134 km (0.096 R)
• M21: 55,798,959 km (0.104 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: 192 - 11,465 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit