🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.47 AU - 0.67 AU

Year: 282 Days

Day: 24 Hours

Environment

Temp: -122 °C

Axial Tilt: 4.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,905,203 km

• M1: 41,738 km (0.101 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 246.2

Radius: 9.5

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.73 AU - 0.81 AU

Year: 443 Days

Day: 8.2 Hours

Environment

Temp: -146 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 61,905,203 km

• M1: 118,182 km (0.053 R)
• M2: 488,886 km (0.072 R)
• M3: 957,576 km (0.081 R)
• M4: 1,360,742 km (0.116 R)
• M5: 1,693,149 km (0.1 R)
• M6: 2,423,186 km (0.086 R)
• M7: 2,965,778 km (0.087 R)
• M8: 3,801,431 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 767.6

Radius: 13.3

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.81 AU - 0.91 AU

Year: 523 Days

Day: 13.9 Hours

Environment

Temp: -150 °C

Axial Tilt: 60.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,905,203 km

• M1: 165,455 km (0.073 R)
• M2: 698,472 km (0.108 R)
• M3: 1,253,929 km (0.116 R)
• M4: 1,809,386 km (0.095 R)
• M5: 2,467,617 km (0.108 R)
• M6: 2,909,379 km (0.047 R)
• M7: 3,805,471 km (0.12 R)
• M8: 4,798,800 km (0.098 R)
• M9: 5,651,957 km (0.113 R)
• M10: 6,603,848 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 276.3

Radius: 11.4

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.36 AU - 1.5 AU

Year: 1122 Days

Day: 7.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 61,905,203 km

• M1: 143,016 km (0.075 R)
• M2: 582,534 km (0.074 R)
• M3: 1,037,162 km (0.034 R)
• M4: 1,525,749 km (0.083 R)
• M5: 1,997,580 km (0.117 R)
• M6: 2,365,142 km (0.058 R)
• M7: 3,150,980 km (0.115 R)
• M8: 3,653,778 km (0.066 R)
• M9: 4,286,877 km (0.051 R)
• M10: 5,621,439 km (0.027 R)
• M11: 6,142,638 km (0.103 R)
• M12: 6,549,245 km (0.092 R)
• M13: 7,105,001 km (0.078 R)
• M14: 8,213,372 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.9

Radius: 11.6

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 2.94 AU - 4.42 AU

Year: 4631 Days

Day: 14.2 Hours

Environment

Temp: -209 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 61,905,203 km

• M1: 146,307 km (0.107 R)
• M2: 525,388 km (0.11 R)
• M3: 1,257,968 km (0.042 R)
• M4: 2,134,313 km (0.112 R)
• M5: 2,977,746 km (0.095 R)
• M6: 4,296,152 km (0.114 R)
• M7: 5,136,892 km (0.053 R)
• M8: 5,942,177 km (0.115 R)
• M9: 6,524,562 km (0.072 R)
• M10: 7,144,645 km (0.088 R)
• M11: 9,786,394 km (0.108 R)
• M12: 10,599,608 km (0.097 R)
• M13: 11,238,839 km (0.111 R)
• M14: 13,704,661 km (0.072 R)
• M15: 15,037,578 km (0.114 R)
• M16: 16,175,868 km (0.059 R)
• M17: 16,737,608 km (0.113 R)
• M18: 21,779,356 km (0.11 R)
• M19: 24,460,149 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.6

Radius: 12.4

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 4.01 AU - 4.19 AU

Year: 5446 Days

Day: 7.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 61,905,203 km

• M1: 154,235 km (0.102 R)
• M2: 638,633 km (0.116 R)
• M3: 1,165,816 km (0.101 R)
• M4: 1,636,002 km (0.09 R)
• M5: 2,248,306 km (0.071 R)
• M6: 2,696,950 km (0.09 R)
• M7: 3,845,114 km (0.086 R)
• M8: 4,367,061 km (0.068 R)
• M9: 5,912,856 km (0.075 R)
• M10: 6,776,784 km (0.119 R)
• M11: 7,723,289 km (0.091 R)
• M12: 8,479,656 km (0.087 R)
• M13: 8,956,724 km (0.093 R)
• M14: 11,762,881 km (0.101 R)
• M15: 12,407,647 km (0.114 R)
• M16: 14,316,965 km (0.089 R)
• M17: 15,052,239 km (0.075 R)
• M18: 15,575,981 km (0.077 R)
• M19: 18,052,274 km (0.09 R)
• M20: 20,566,865 km (0.107 R)
• M21: 21,212,080 km (0.114 R)
• M22: 23,694,508 km (0.095 R)
• M23: 28,340,419 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 583.7

Radius: 13.5

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 4.4 AU - 5.4 AU

Year: 7115 Days

Day: 6.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 61,905,203 km

• M1: 167,849 km (0.066 R)
• M2: 758,611 km (0.056 R)
• M3: 1,294,770 km (0.054 R)
• M4: 1,821,952 km (0.077 R)
• M5: 2,423,635 km (0.077 R)
• M6: 3,541,430 km (0.104 R)
• M7: 4,007,129 km (0.073 R)
• M8: 4,866,269 km (0.073 R)
• M9: 6,198,588 km (0.116 R)
• M10: 7,165,588 km (0.115 R)
• M11: 9,139,532 km (0.105 R)
• M12: 11,059,322 km (0.066 R)
• M13: 11,654,123 km (0.075 R)
• M14: 12,854,047 km (0.095 R)
• M15: 13,679,977 km (0.108 R)
• M16: 14,134,755 km (0.083 R)
• M17: 14,599,705 km (0.1 R)
• M18: 16,626,307 km (0.115 R)
• M19: 17,607,071 km (0.093 R)
• M20: 18,625,982 km (0.03 R)
• M21: 19,114,868 km (0.119 R)
• M22: 20,781,388 km (0.119 R)
• M23: 22,543,053 km (0.111 R)
• M24: 26,978,181 km (0.101 R)
• M25: 34,411,400 km (0.033 R)
• M26: 35,573,925 km (0.054 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.81 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 363.2

Radius: 5.9

Gravity: 10.43 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 8.31 AU - 11.31 AU

Year: 20156 Days

Day: 23 Hours

Environment

Temp: -232 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 61,905,203 km

• M1: 73,453 km (0.104 R)
• M2: 294,857 km (0.097 R)
• M3: 490,831 km (0.064 R)
• M4: 1,039,556 km (0.117 R)
• M5: 1,276,967 km (0.117 R)
• M6: 1,504,655 km (0.103 R)
• M7: 2,793,142 km (0.071 R)
• M8: 3,629,544 km (0.115 R)
• M9: 4,180,812 km (0.075 R)
• M10: 4,819,894 km (0.105 R)
• M11: 6,700,040 km (0.06 R)
• M12: 7,214,956 km (0.112 R)
• M13: 7,482,287 km (0.113 R)
• M14: 7,848,802 km (0.06 R)
• M15: 10,473,347 km (0.031 R)
• M16: 13,229,688 km (0.087 R)
• M17: 15,460,790 km (0.053 R)
• M18: 15,905,246 km (0.109 R)
• M19: 20,034,446 km (0.054 R)
• M20: 22,864,688 km (0.098 R)
• M21: 24,724,938 km (0.086 R)
• M22: 32,328,549 km (0.116 R)
• M23: 33,422,558 km (0.114 R)
• M24: 37,247,327 km (0.088 R)
• M25: 37,911,990 km (0.115 R)
• M26: 39,128,071 km (0.119 R)
• M27: 51,102,782 km (0.086 R)
• M28: 52,585,746 km (0.104 R)
• M29: 52,919,200 km (0.112 R)
• M30: 53,758,892 km (0.07 R)
• M31: 55,292,719 km (0.041 R)
• M32: 55,810,328 km (0.116 R)
• M33: 56,157,245 km (0.069 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 272 - 16,474 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit