🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.55 AU - 0.75 AU

Year: 333 Days

Day: 22 Hours

Environment

Temp: -139 °C

Axial Tilt: 21.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 943.2

Radius: 10.5

Gravity: 8.56 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.56 AU - 0.9 AU

Year: 397 Days

Day: 7.6 Hours

Environment

Temp: -134 °C

Axial Tilt: 152.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,211,307 km

• M1: 131,048 km (0.117 R)
• M2: 549,024 km (0.084 R)
• M3: 912,397 km (0.094 R)
• M4: 1,290,730 km (0.033 R)
• M5: 2,168,571 km (0.102 R)
• M6: 2,521,472 km (0.058 R)
• M7: 3,078,425 km (0.093 R)
• M8: 3,551,753 km (0.078 R)
• M9: 4,032,411 km (0.12 R)
• M10: 5,061,046 km (0.089 R)
• M11: 5,636,997 km (0.034 R)
• M12: 6,110,624 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 325.4

Radius: 10.9

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.76 AU - 1.26 AU

Year: 645 Days

Day: 10.6 Hours

Environment

Temp: -157 °C

Axial Tilt: 49.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,211,307 km

• M1: 138,528 km (0.071 R)
• M2: 555,906 km (0.103 R)
• M3: 1,098,198 km (0.095 R)
• M4: 1,523,804 km (0.096 R)
• M5: 1,985,014 km (0.12 R)
• M6: 2,636,962 km (0.072 R)
• M7: 3,426,390 km (0.047 R)
• M8: 3,916,173 km (0.074 R)
• M9: 4,409,248 km (0.09 R)
• M10: 4,866,718 km (0.092 R)
• M11: 5,437,733 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 611.3

Radius: 8.3

Gravity: 8.87 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.17 AU - 1.19 AU

Year: 815 Days

Day: 12.8 Hours

Environment

Temp: -163 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,211,307 km

• M1: 108,010 km (0.076 R)
• M2: 366,066 km (0.103 R)
• M3: 635,492 km (0.107 R)
• M4: 1,544,897 km (0.108 R)
• M5: 2,403,290 km (0.114 R)
• M6: 2,822,313 km (0.111 R)
• M7: 3,851,098 km (0.067 R)
• M8: 4,410,145 km (0.097 R)
• M9: 6,064,847 km (0.062 R)
• M10: 6,393,663 km (0.113 R)
• M11: 8,121,369 km (0.106 R)
• M12: 8,496,112 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 935

Radius: 14.7

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 2.34 AU - 3.82 AU

Year: 3437 Days

Day: 5.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 47,211,307 km

• M1: 183,557 km (0.03 R)
• M2: 1,371,364 km (0.108 R)
• M3: 2,606,892 km (0.079 R)
• M4: 3,363,110 km (0.114 R)
• M5: 3,888,797 km (0.069 R)
• M6: 4,683,610 km (0.102 R)
• M7: 5,342,589 km (0.115 R)
• M8: 6,062,903 km (0.079 R)
• M9: 14,052,326 km (0.118 R)
• M10: 15,812,944 km (0.112 R)
• M11: 19,448,172 km (0.065 R)
• M12: 21,290,171 km (0.111 R)
• M13: 24,789,564 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 685.3

Radius: 9

Gravity: 8.46 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 4.16 AU - 4.66 AU

Year: 5888 Days

Day: 9 Hours

Environment

Temp: -208 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 47,211,307 km

• M1: 118,182 km (0.074 R)
• M2: 454,927 km (0.076 R)
• M3: 880,832 km (0.112 R)
• M4: 1,285,644 km (0.112 R)
• M5: 1,588,430 km (0.085 R)
• M6: 1,910,514 km (0.119 R)
• M7: 2,341,805 km (0.106 R)
• M8: 3,508,668 km (0.067 R)
• M9: 4,434,978 km (0.098 R)
• M10: 5,052,967 km (0.091 R)
• M11: 5,486,053 km (0.101 R)
• M12: 6,006,803 km (0.063 R)
• M13: 7,290,054 km (0.119 R)
• M14: 7,582,069 km (0.108 R)
• M15: 8,346,364 km (0.091 R)
• M16: 8,870,107 km (0.09 R)
• M17: 11,478,046 km (0.072 R)
• M18: 12,484,840 km (0.111 R)
• M19: 13,063,036 km (0.059 R)
• M20: 13,991,590 km (0.066 R)
• M21: 16,724,743 km (0.096 R)
• M22: 19,936,160 km (0.114 R)
• M23: 22,676,344 km (0.079 R)
• M24: 24,257,444 km (0.116 R)
• M25: 24,909,990 km (0.054 R)
• M26: 25,826,277 km (0.117 R)
• M27: 26,506,648 km (0.092 R)
• M28: 29,532,265 km (0.115 R)
• M29: 31,511,894 km (0.105 R)
• M30: 32,583,314 km (0.099 R)
• M31: 33,078,333 km (0.089 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 713.3

Radius: 6.8

Gravity: 15.43 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 5.2 AU - 7 AU

Year: 9579 Days

Day: 24.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,211,307 km

• M1: 85,121 km (0.065 R)
• M2: 566,078 km (0.049 R)
• M3: 1,762,861 km (0.106 R)
• M4: 2,491,104 km (0.104 R)
• M5: 3,963,745 km (0.059 R)
• M6: 4,582,482 km (0.07 R)
• M7: 5,561,301 km (0.058 R)
• M8: 5,870,071 km (0.07 R)
• M9: 6,409,820 km (0.055 R)
• M10: 12,496,509 km (0.073 R)
• M11: 14,449,808 km (0.091 R)
• M12: 15,165,783 km (0.073 R)
• M13: 23,408,177 km (0.053 R)
• M14: 26,068,775 km (0.112 R)
• M15: 26,643,381 km (0.07 R)
• M16: 35,364,338 km (0.115 R)
• M17: 36,068,346 km (0.084 R)
• M18: 36,901,456 km (0.057 R)
• M19: 40,235,245 km (0.058 R)
• M20: 41,649,094 km (0.048 R)
• M21: 43,630,219 km (0.078 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 178 - 11,525 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit