🌌 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: 3.61

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.44 AU - 0.62 AU

Year: 253 Days

Day: 15.3 Hours

Environment

Temp: -112 °C

Axial Tilt: 16.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.05

Radius: 1.33

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.5 AU - 0.78 AU

Year: 336 Days

Day: 38.4 Hours

Environment

Temp: -130 °C

Axial Tilt: 37.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,488,370 km

• M1: 33,360 km (0.112 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 814.4

Radius: 12.7

Gravity: 5.05 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1 AU - 1.12 AU

Year: 716 Days

Day: 8.1 Hours

Environment

Temp: -164 °C

Axial Tilt: 47.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,488,370 km

• M1: 158,424 km (0.113 R)
• M2: 565,779 km (0.11 R)
• M3: 973,134 km (0.115 R)
• M4: 1,423,424 km (0.096 R)
• M5: 1,861,446 km (0.087 R)
• M6: 2,464,924 km (0.034 R)
• M7: 3,183,293 km (0.118 R)
• M8: 3,627,599 km (0.111 R)
• M9: 4,659,525 km (0.059 R)
• M10: 5,838,805 km (0.079 R)
• M11: 7,050,847 km (0.052 R)
• M12: 7,764,129 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 995

Radius: 9.5

Gravity: 11.02 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.14 AU - 1.38 AU

Year: 928 Days

Day: 13.5 Hours

Environment

Temp: -164 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 78,488,370 km

• M1: 118,182 km (0.059 R)
• M2: 415,284 km (0.118 R)
• M3: 717,322 km (0.107 R)
• M4: 1,373,907 km (0.114 R)
• M5: 1,822,700 km (0.051 R)
• M6: 2,367,386 km (0.098 R)
• M7: 2,909,978 km (0.058 R)
• M8: 3,579,279 km (0.08 R)
• M9: 4,124,712 km (0.111 R)
• M10: 4,435,427 km (0.082 R)
• M11: 4,912,046 km (0.101 R)
• M12: 5,402,278 km (0.056 R)
• M13: 7,542,874 km (0.118 R)
• M14: 8,550,416 km (0.068 R)
• M15: 9,856,854 km (0.103 R)
• M16: 10,895,961 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986

Radius: 11.4

Gravity: 7.59 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 3.01 AU - 4.31 AU

Year: 4593 Days

Day: 14.3 Hours

Environment

Temp: -203 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 78,488,370 km

• M1: 143,464 km (0.093 R)
• M2: 861,085 km (0.066 R)
• M3: 1,222,663 km (0.11 R)
• M4: 1,874,312 km (0.038 R)
• M5: 2,320,413 km (0.064 R)
• M6: 3,601,270 km (0.034 R)
• M7: 4,678,225 km (0.115 R)
• M8: 5,305,937 km (0.116 R)
• M9: 7,035,887 km (0.118 R)
• M10: 7,639,664 km (0.06 R)
• M11: 8,124,511 km (0.094 R)
• M12: 8,590,209 km (0.092 R)
• M13: 9,322,042 km (0.087 R)
• M14: 9,789,535 km (0.06 R)
• M15: 10,817,572 km (0.115 R)
• M16: 12,214,666 km (0.053 R)
• M17: 12,982,851 km (0.082 R)
• M18: 13,566,582 km (0.105 R)
• M19: 14,334,468 km (0.064 R)
• M20: 16,937,770 km (0.053 R)
• M21: 17,570,719 km (0.106 R)
• M22: 18,749,700 km (0.12 R)
• M23: 19,358,712 km (0.061 R)
• M24: 20,687,590 km (0.102 R)
• M25: 21,631,254 km (0.095 R)
• M26: 22,001,658 km (0.065 R)
• M27: 22,755,482 km (0.119 R)
• M28: 27,731,256 km (0.101 R)
• M29: 28,967,683 km (0.042 R)
• M30: 29,781,795 km (0.077 R)
• M31: 30,611,015 km (0.099 R)
• M32: 31,360,950 km (0.064 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.9

Radius: 10

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 3.1 AU - 4.8 AU

Year: 5150 Days

Day: 9.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 78,488,370 km

• M1: 127,607 km (0.111 R)
• M2: 440,865 km (0.062 R)
• M3: 777,011 km (0.104 R)
• M4: 1,116,898 km (0.071 R)
• M5: 1,654,702 km (0.107 R)
• M6: 1,998,628 km (0.118 R)
• M7: 2,326,845 km (0.058 R)
• M8: 3,290,256 km (0.081 R)
• M9: 4,963,209 km (0.083 R)
• M10: 5,835,065 km (0.114 R)
• M11: 7,073,137 km (0.028 R)
• M12: 7,700,251 km (0.054 R)
• M13: 10,147,224 km (0.082 R)
• M14: 11,220,289 km (0.098 R)
• M15: 15,516,890 km (0.113 R)
• M16: 17,061,039 km (0.062 R)
• M17: 17,933,643 km (0.086 R)
• M18: 18,381,090 km (0.074 R)
• M19: 18,901,392 km (0.102 R)
• M20: 20,314,194 km (0.118 R)
• M21: 24,268,365 km (0.078 R)
• M22: 25,053,155 km (0.115 R)
• M23: 29,232,471 km (0.113 R)
• M24: 29,852,405 km (0.025 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 144.7

Radius: 12.4

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 4.9 AU - 6.28 AU

Year: 8670 Days

Day: 13.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,488,370 km

• M1: 154,235 km (0.102 R)
• M2: 552,615 km (0.108 R)
• M3: 1,358,049 km (0.104 R)
• M4: 1,985,014 km (0.1 R)
• M5: 3,043,569 km (0.117 R)
• M6: 3,803,227 km (0.08 R)
• M7: 5,033,968 km (0.098 R)
• M8: 7,438,156 km (0.062 R)
• M9: 7,914,475 km (0.09 R)
• M10: 12,398,672 km (0.115 R)
• M11: 13,514,073 km (0.091 R)
• M12: 20,841,527 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 877.3

Radius: 6.3

Gravity: 22.1 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 8.64 AU - 9.9 AU

Year: 18515 Days

Day: 20.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 78,488,370 km

• M1: 78,389 km (0.056 R)
• M2: 279,898 km (0.092 R)
• M3: 1,231,490 km (0.073 R)
• M4: 1,763,011 km (0.095 R)
• M5: 2,921,796 km (0.076 R)
• M6: 4,380,824 km (0.062 R)
• M7: 4,765,440 km (0.12 R)
• M8: 5,172,197 km (0.103 R)
• M9: 5,522,106 km (0.098 R)
• M10: 7,810,505 km (0.088 R)
• M11: 8,167,296 km (0.106 R)
• M12: 8,641,970 km (0.114 R)
• M13: 11,424,490 km (0.075 R)
• M14: 14,220,474 km (0.095 R)
• M15: 14,523,111 km (0.076 R)
• M16: 15,695,809 km (0.099 R)
• M17: 17,014,963 km (0.034 R)
• M18: 21,611,656 km (0.107 R)
• M19: 21,811,070 km (0.063 R)
• M20: 22,826,541 km (0.118 R)
• M21: 23,872,978 km (0.044 R)
• M22: 29,466,891 km (0.092 R)
• M23: 30,832,570 km (0.082 R)
• M24: 35,458,286 km (0.116 R)
• M25: 41,440,705 km (0.053 R)
• M26: 45,400,111 km (0.119 R)
• M27: 48,914,913 km (0.092 R)
• M28: 50,650,697 km (0.101 R)
• M29: 51,002,701 km (0.066 R)
• M30: 53,330,594 km (0.087 R)
• M31: 54,428,642 km (0.083 R)
• M32: 58,197,312 km (0.038 R)
• M33: 62,539,539 km (0.079 R)
• M34: 65,412,567 km (0.113 R)
• M35: 67,092,999 km (0.1 R)
• M36: 70,540,183 km (0.083 R)
• M37: 72,084,632 km (0.041 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 155 - 17,622 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit