🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.89

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.56 AU - 0.62 AU

Year: 297 Days

Day: 24.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 17.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 166.7

Radius: 13.9

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.75 AU - 0.87 AU

Year: 478 Days

Day: 9.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 62,248,926 km

• M1: 172,935 km (0.066 R)
• M2: 610,958 km (0.042 R)
• M3: 1,049,728 km (0.08 R)
• M4: 1,880,595 km (0.111 R)
• M5: 2,471,806 km (0.109 R)
• M6: 3,775,701 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 759.3

Radius: 8.1

Gravity: 11.57 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.73 AU - 0.99 AU

Year: 523 Days

Day: 6.4 Hours

Environment

Temp: -142 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 62,248,926 km

• M1: 100,679 km (0.116 R)
• M2: 381,475 km (0.079 R)
• M3: 930,200 km (0.104 R)
• M4: 1,387,221 km (0.036 R)
• M5: 2,157,500 km (0.09 R)
• M6: 2,507,111 km (0.073 R)
• M7: 2,760,978 km (0.101 R)
• M8: 3,079,023 km (0.051 R)
• M9: 4,970,539 km (0.103 R)
• M10: 5,460,621 km (0.102 R)
• M11: 6,322,754 km (0.097 R)
• M12: 6,716,047 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.8

Radius: 8.7

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.39 AU - 1.47 AU

Year: 1122 Days

Day: 11.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 49.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 62,248,926 km

• M1: 108,159 km (0.067 R)
• M2: 810,072 km (0.042 R)
• M3: 1,322,296 km (0.119 R)
• M4: 1,689,259 km (0.066 R)
• M5: 2,550,494 km (0.097 R)
• M6: 2,924,190 km (0.084 R)
• M7: 3,321,970 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 804.4

Radius: 10

Gravity: 8.04 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 1.67 AU - 2.25 AU

Year: 1800 Days

Day: 8.1 Hours

Environment

Temp: -191 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 62,248,926 km

• M1: 124,316 km (0.077 R)
• M2: 453,431 km (0.058 R)
• M3: 915,090 km (0.035 R)
• M4: 1,309,580 km (0.107 R)
• M5: 2,246,511 km (0.098 R)
• M6: 2,742,727 km (0.06 R)
• M7: 3,055,985 km (0.052 R)
• M8: 3,845,563 km (0.107 R)
• M9: 4,619,881 km (0.1 R)
• M10: 5,066,281 km (0.115 R)
• M11: 6,120,348 km (0.117 R)
• M12: 6,476,541 km (0.089 R)
• M13: 7,009,259 km (0.083 R)
• M14: 8,162,658 km (0.089 R)
• M15: 9,205,655 km (0.088 R)
• M16: 9,845,335 km (0.116 R)
• M17: 13,927,263 km (0.089 R)
• M18: 14,770,247 km (0.113 R)
• M19: 15,227,418 km (0.074 R)
• M20: 15,978,549 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 674.9

Radius: 9.1

Gravity: 8.15 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2.32 AU - 3.22 AU

Year: 3024 Days

Day: 5.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 62,248,926 km

• M1: 117,584 km (0.048 R)
• M2: 529,277 km (0.064 R)
• M3: 1,021,903 km (0.076 R)
• M4: 1,501,963 km (0.081 R)
• M5: 2,207,466 km (0.089 R)
• M6: 2,849,839 km (0.038 R)
• M7: 3,887,450 km (0.104 R)
• M8: 4,284,034 km (0.075 R)
• M9: 5,183,267 km (0.104 R)
• M10: 5,509,390 km (0.044 R)
• M11: 5,902,833 km (0.086 R)
• M12: 8,327,066 km (0.071 R)
• M13: 11,899,613 km (0.076 R)
• M14: 12,292,008 km (0.098 R)
• M15: 12,738,109 km (0.113 R)
• M16: 13,241,207 km (0.085 R)
• M17: 13,805,041 km (0.039 R)
• M18: 14,930,615 km (0.106 R)
• M19: 15,489,962 km (0.118 R)
• M20: 17,252,374 km (0.089 R)
• M21: 17,755,322 km (0.099 R)
• M22: 20,729,627 km (0.095 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 298.9

Radius: 8

Gravity: 4.67 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 3.8 AU - 5.82 AU

Year: 6920 Days

Day: 14.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 62,248,926 km

• M1: 99,483 km (0.097 R)
• M2: 350,957 km (0.083 R)
• M3: 689,048 km (0.114 R)
• M4: 1,118,094 km (0.029 R)
• M5: 1,940,883 km (0.107 R)
• M6: 2,384,740 km (0.083 R)
• M7: 2,804,810 km (0.105 R)
• M8: 3,663,951 km (0.115 R)
• M9: 4,154,333 km (0.047 R)
• M10: 4,789,675 km (0.056 R)
• M11: 5,601,393 km (0.047 R)
• M12: 6,283,410 km (0.075 R)
• M13: 7,425,889 km (0.043 R)
• M14: 7,776,397 km (0.107 R)
• M15: 8,972,731 km (0.052 R)
• M16: 9,451,593 km (0.104 R)
• M17: 10,635,212 km (0.075 R)
• M18: 11,867,150 km (0.114 R)
• M19: 12,395,380 km (0.045 R)
• M20: 14,721,178 km (0.083 R)
• M21: 18,128,420 km (0.109 R)
• M22: 20,556,991 km (0.06 R)
• M23: 22,752,191 km (0.065 R)
• M24: 23,868,490 km (0.106 R)
• M25: 25,650,350 km (0.065 R)
• M26: 28,190,073 km (0.087 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 709.8

Radius: 7.4

Gravity: 12.96 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 6.56 AU - 9.22 AU

Year: 14539 Days

Day: 19.8 Hours

Environment

Temp: -234 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 62,248,926 km

• M1: 94,396 km (0.083 R)
• M2: 337,194 km (0.097 R)
• M3: 651,349 km (0.104 R)
• M4: 972,985 km (0.109 R)
• M5: 1,427,463 km (0.104 R)
• M6: 1,671,607 km (0.085 R)
• M7: 1,943,725 km (0.089 R)
• M8: 2,556,628 km (0.106 R)
• M9: 3,089,794 km (0.078 R)
• M10: 5,756,077 km (0.102 R)
• M11: 6,880,455 km (0.118 R)
• M12: 7,676,615 km (0.072 R)
• M13: 9,610,167 km (0.063 R)
• M14: 10,209,456 km (0.089 R)
• M15: 10,546,650 km (0.096 R)
• M16: 11,603,110 km (0.089 R)
• M17: 12,536,002 km (0.114 R)
• M18: 13,788,286 km (0.096 R)
• M19: 14,269,991 km (0.09 R)
• M20: 16,462,647 km (0.106 R)
• M21: 18,619,549 km (0.103 R)
• M22: 20,511,065 km (0.05 R)
• M23: 21,964,707 km (0.099 R)
• M24: 23,388,729 km (0.055 R)
• M25: 24,571,450 km (0.084 R)
• M26: 27,377,458 km (0.105 R)
• M27: 28,690,328 km (0.092 R)
• M28: 31,441,433 km (0.117 R)
• M29: 34,994,084 km (0.094 R)
• M30: 36,148,829 km (0.075 R)
• M31: 37,461,401 km (0.117 R)
• M32: 38,264,143 km (0.104 R)
• M33: 39,352,169 km (0.071 R)
• M34: 42,162,065 km (0.079 R)
• M35: 49,445,986 km (0.113 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: 189 - 13,380 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit