🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.36

Radius: 0.66

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.43 AU - 0.69 AU

Year: 271 Days

Day: 40.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 49 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 471.3

Radius: 11.3

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.71 AU - 1.11 AU

Year: 561 Days

Day: 7.2 Hours

Environment

Temp: -152 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,760,460 km

• M1: 140,472 km (0.027 R)
• M2: 589,266 km (0.092 R)
• M3: 1,104,930 km (0.064 R)
• M4: 1,811,630 km (0.032 R)
• M5: 2,585,051 km (0.106 R)
• M6: 2,981,934 km (0.066 R)
• M7: 3,666,793 km (0.117 R)
• M8: 4,240,202 km (0.099 R)
• M9: 5,059,849 km (0.09 R)
• M10: 5,651,508 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136.9

Radius: 14

Gravity: 0.7 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 1.14 AU - 1.72 AU

Year: 1104 Days

Day: 14.2 Hours

Environment

Temp: -172 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 49,760,460 km

• M1: 242,797 km (0.101 R)
• M2: 757,564 km (0.064 R)
• M3: 1,258,567 km (0.112 R)
• M4: 1,758,373 km (0.083 R)
• M5: 2,842,958 km (0.097 R)
• M6: 3,435,665 km (0.098 R)
• M7: 5,254,625 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 915.6

Radius: 8.2

Gravity: 13.62 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.61 AU - 2.19 AU

Year: 1691 Days

Day: 7.1 Hours

Environment

Temp: -182 °C

Axial Tilt: 12 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 49,760,460 km

• M1: 102,175 km (0.053 R)
• M2: 613,052 km (0.107 R)
• M3: 1,068,428 km (0.079 R)
• M4: 1,404,425 km (0.057 R)
• M5: 1,684,173 km (0.098 R)
• M6: 2,242,771 km (0.11 R)
• M7: 2,628,285 km (0.103 R)
• M8: 2,965,179 km (0.052 R)
• M9: 3,248,667 km (0.067 R)
• M10: 3,515,849 km (0.04 R)
• M11: 3,944,297 km (0.116 R)
• M12: 7,089,593 km (0.037 R)
• M13: 9,782,205 km (0.099 R)
• M14: 10,235,935 km (0.033 R)
• M15: 10,703,578 km (0.089 R)
• M16: 11,489,116 km (0.074 R)
• M17: 12,554,702 km (0.096 R)
• M18: 13,048,824 km (0.114 R)
• M19: 14,790,442 km (0.114 R)
• M20: 15,248,960 km (0.044 R)
• M21: 15,859,020 km (0.041 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.7

Radius: 12.3

Gravity: 0.16 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 2.06 AU - 2.62 AU

Year: 2311 Days

Day: 12.7 Hours

Environment

Temp: -201 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 49,760,460 km

• M1: 228,436 km (0.107 R)
• M2: 946,655 km (0.099 R)
• M3: 1,605,933 km (0.11 R)
• M4: 2,450,862 km (0.112 R)
• M5: 3,333,489 km (0.088 R)
• M6: 4,032,560 km (0.101 R)
• M7: 4,417,476 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 182.3

Radius: 12.7

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.15 AU - 2.57 AU

Year: 2341 Days

Day: 9.6 Hours

Environment

Temp: -195 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 49,760,460 km

• M1: 157,975 km (0.062 R)
• M2: 1,076,506 km (0.115 R)
• M3: 1,542,204 km (0.048 R)
• M4: 1,957,039 km (0.113 R)
• M5: 2,506,662 km (0.084 R)
• M6: 3,229,220 km (0.071 R)
• M7: 3,632,685 km (0.06 R)
• M8: 4,137,578 km (0.07 R)
• M9: 5,149,757 km (0.088 R)
• M10: 5,577,308 km (0.116 R)
• M11: 6,139,796 km (0.103 R)
• M12: 6,835,576 km (0.119 R)
• M13: 8,863,823 km (0.104 R)
• M14: 10,347,236 km (0.101 R)
• M15: 10,898,803 km (0.066 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279.3

Radius: 11.5

Gravity: 2.11 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 3.28 AU - 4.98 AU

Year: 5419 Days

Day: 14.2 Hours

Environment

Temp: -214 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 49,760,460 km

• M1: 143,165 km (0.104 R)
• M2: 809,324 km (0.076 R)
• M3: 1,211,444 km (0.116 R)
• M4: 1,809,237 km (0.117 R)
• M5: 2,254,440 km (0.07 R)
• M6: 2,643,843 km (0.063 R)
• M7: 3,861,271 km (0.119 R)
• M8: 5,015,119 km (0.103 R)
• M9: 5,739,622 km (0.107 R)
• M10: 6,415,056 km (0.09 R)
• M11: 7,080,018 km (0.082 R)
• M12: 7,992,266 km (0.113 R)
• M13: 10,089,479 km (0.109 R)
• M14: 12,715,370 km (0.061 R)
• M15: 13,281,149 km (0.088 R)
• M16: 13,912,752 km (0.118 R)
• M17: 15,288,753 km (0.078 R)
• M18: 16,255,305 km (0.088 R)
• M19: 18,548,341 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 461

Radius: 12.1

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.41 AU - 5.49 AU

Year: 6061 Days

Day: 13 Hours

Environment

Temp: -208 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 49,760,460 km

• M1: 150,645 km (0.029 R)
• M2: 553,961 km (0.117 R)
• M3: 1,594,115 km (0.12 R)
• M4: 2,243,818 km (0.093 R)
• M5: 2,896,364 km (0.116 R)
• M6: 3,278,138 km (0.075 R)
• M7: 4,144,609 km (0.083 R)
• M8: 4,657,580 km (0.101 R)
• M9: 5,212,738 km (0.094 R)
• M10: 5,900,738 km (0.092 R)
• M11: 7,079,420 km (0.109 R)
• M12: 7,528,962 km (0.051 R)
• M13: 11,699,750 km (0.103 R)
• M14: 13,604,430 km (0.111 R)
• M15: 14,355,711 km (0.115 R)
• M16: 14,853,124 km (0.12 R)
• M17: 15,304,909 km (0.062 R)
• M18: 16,117,525 km (0.075 R)
• M19: 16,897,827 km (0.109 R)
• M20: 17,640,132 km (0.104 R)
• M21: 19,524,168 km (0.07 R)
• M22: 20,203,791 km (0.101 R)
• M23: 24,072,990 km (0.104 R)
• M24: 24,933,776 km (0.099 R)
• M25: 25,331,856 km (0.064 R)
• M26: 27,980,337 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 480.4

Radius: 6.6

Gravity: 11.03 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 6.64 AU - 7.88 AU

Year: 12630 Days

Day: 20.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 49,760,460 km

• M1: 82,129 km (0.098 R)
• M2: 330,462 km (0.109 R)
• M3: 618,288 km (0.066 R)
• M4: 1,436,888 km (0.083 R)
• M5: 1,679,535 km (0.089 R)
• M6: 2,230,355 km (0.118 R)
• M7: 4,004,436 km (0.054 R)
• M8: 6,828,245 km (0.085 R)
• M9: 7,148,235 km (0.046 R)
• M10: 7,562,023 km (0.115 R)
• M11: 8,759,703 km (0.111 R)
• M12: 10,181,631 km (0.099 R)
• M13: 10,493,842 km (0.099 R)
• M14: 10,705,672 km (0.101 R)
• M15: 13,725,006 km (0.083 R)
• M16: 13,978,425 km (0.109 R)
• M17: 14,364,388 km (0.107 R)
• M18: 16,831,256 km (0.105 R)
• M19: 17,341,834 km (0.113 R)
• M20: 18,088,926 km (0.119 R)
• M21: 21,547,180 km (0.104 R)
• M22: 25,804,586 km (0.106 R)
• M23: 26,190,997 km (0.085 R)
• M24: 27,774,939 km (0.095 R)
• M25: 30,698,680 km (0.101 R)
• M26: 32,123,300 km (0.087 R)
• M27: 32,795,444 km (0.101 R)
• M28: 37,272,010 km (0.106 R)
• M29: 38,640,083 km (0.111 R)
• M30: 39,655,703 km (0.107 R)
• M31: 41,476,010 km (0.066 R)
• M32: 45,282,079 km (0.12 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 347 - 13,202 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit