🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.02

Radius: 1.74

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.5 AU - 0.7 AU

Year: 296 Days

Day: 31.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 19.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.4

Radius: 10.8

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.72 AU - 0.88 AU

Year: 455 Days

Day: 14 Hours

Environment

Temp: -153 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 62,561,805 km

• M1: 134,339 km (0.09 R)
• M2: 511,475 km (0.082 R)
• M3: 1,212,491 km (0.065 R)
• M4: 1,720,974 km (0.069 R)
• M5: 2,214,198 km (0.053 R)
• M6: 2,847,595 km (0.061 R)
• M7: 3,222,787 km (0.098 R)
• M8: 3,631,339 km (0.102 R)
• M9: 4,372,447 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.7

Radius: 8.4

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.81 AU - 0.95 AU

Year: 525 Days

Day: 11.7 Hours

Environment

Temp: -162 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 62,561,805 km

• M1: 104,419 km (0.044 R)
• M2: 491,728 km (0.116 R)
• M3: 1,107,174 km (0.095 R)
• M4: 1,740,122 km (0.118 R)
• M5: 2,024,358 km (0.096 R)
• M6: 2,505,465 km (0.084 R)

Asteroid Belt

Center: 1.39 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.1

Radius: 12.6

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.66 AU - 2.14 AU

Year: 1665 Days

Day: 5.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 62,561,805 km

• M1: 156,629 km (0.106 R)
• M2: 809,175 km (0.117 R)
• M3: 1,357,002 km (0.054 R)
• M4: 1,807,591 km (0.075 R)
• M5: 2,275,384 km (0.108 R)
• M6: 2,921,347 km (0.07 R)
• M7: 3,412,477 km (0.112 R)
• M8: 4,897,535 km (0.081 R)
• M9: 7,188,477 km (0.098 R)
• M10: 8,090,253 km (0.067 R)
• M11: 9,503,205 km (0.103 R)
• M12: 10,589,435 km (0.096 R)
• M13: 11,109,886 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.1

Radius: 13.3

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 4.26 AU - 6.74 AU

Year: 8201 Days

Day: 11 Hours

Environment

Temp: -210 °C

Axial Tilt: 138.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 62,561,805 km

• M1: 166,951 km (0.1 R)
• M2: 643,271 km (0.106 R)
• M3: 1,089,222 km (0.103 R)
• M4: 1,834,519 km (0.117 R)
• M5: 2,541,967 km (0.098 R)
• M6: 3,629,544 km (0.065 R)
• M7: 5,734,984 km (0.064 R)
• M8: 6,602,352 km (0.099 R)
• M9: 7,141,503 km (0.1 R)
• M10: 10,870,679 km (0.078 R)
• M11: 11,521,729 km (0.065 R)
• M12: 12,574,299 km (0.107 R)
• M13: 13,068,421 km (0.101 R)
• M14: 15,175,956 km (0.034 R)
• M15: 19,394,766 km (0.117 R)
• M16: 20,503,884 km (0.115 R)
• M17: 23,585,301 km (0.109 R)
• M18: 25,279,796 km (0.062 R)
• M19: 26,872,864 km (0.088 R)
• M20: 28,250,959 km (0.092 R)
• M21: 29,290,964 km (0.088 R)
• M22: 31,648,776 km (0.104 R)
• M23: 35,201,875 km (0.04 R)
• M24: 37,524,531 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 661.3

Radius: 9.6

Gravity: 7.18 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 5.8 AU - 6.18 AU

Year: 9321 Days

Day: 13 Hours

Environment

Temp: -215 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 62,561,805 km

• M1: 120,576 km (0.028 R)
• M2: 469,289 km (0.045 R)
• M3: 958,474 km (0.117 R)
• M4: 1,829,582 km (0.05 R)
• M5: 2,170,815 km (0.111 R)
• M6: 2,855,973 km (0.099 R)
• M7: 3,272,453 km (0.119 R)
• M8: 5,755,030 km (0.117 R)
• M9: 6,984,725 km (0.117 R)
• M10: 8,645,859 km (0.108 R)
• M11: 8,961,660 km (0.115 R)
• M12: 12,330,305 km (0.117 R)
• M13: 12,788,972 km (0.044 R)
• M14: 14,046,941 km (0.105 R)
• M15: 23,203,079 km (0.102 R)
• M16: 23,991,011 km (0.059 R)
• M17: 26,461,769 km (0.116 R)
• M18: 37,447,339 km (0.05 R)
• M19: 42,423,712 km (0.116 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 898.3

Radius: 5.6

Gravity: 28.64 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 8.29 AU - 10.41 AU

Year: 18178 Days

Day: 19.1 Hours

Environment

Temp: -239 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 62,561,805 km

• M1: 69,713 km (0.116 R)
• M2: 270,473 km (0.082 R)
• M3: 666,608 km (0.053 R)
• M4: 1,082,939 km (0.049 R)
• M5: 1,954,197 km (0.097 R)
• M6: 3,031,302 km (0.077 R)
• M7: 3,651,983 km (0.049 R)
• M8: 4,560,042 km (0.111 R)
• M9: 4,736,867 km (0.075 R)
• M10: 6,320,660 km (0.111 R)
• M11: 7,424,243 km (0.098 R)
• M12: 9,032,271 km (0.098 R)
• M13: 9,770,835 km (0.108 R)
• M14: 10,487,708 km (0.11 R)
• M15: 10,672,312 km (0.108 R)
• M16: 11,111,382 km (0.091 R)
• M17: 13,202,012 km (0.084 R)
• M18: 14,301,856 km (0.075 R)
• M19: 15,068,246 km (0.071 R)
• M20: 35,024,601 km (0.066 R)
• M21: 39,746,060 km (0.096 R)
• M22: 42,804,588 km (0.116 R)
• M23: 52,734,745 km (0.108 R)
• M24: 56,609,181 km (0.088 R)
• M25: 56,798,272 km (0.034 R)
• M26: 58,133,882 km (0.092 R)
• M27: 62,064,566 km (0.038 R)
• M28: 64,094,909 km (0.059 R)
• M29: 64,919,193 km (0.114 R)
• M30: 77,912,815 km (0.041 R)
• M31: 78,146,786 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 261.8

Radius: 7.1

Gravity: 5.19 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 10.87 AU - 11.71 AU

Year: 24120 Days

Day: 23.8 Hours

Environment

Temp: -240 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 62,561,805 km

• M1: 164,857 km (0.077 R)
• M2: 1,741,618 km (0.068 R)
• M3: 1,985,762 km (0.085 R)
• M4: 3,543,525 km (0.078 R)
• M5: 3,851,397 km (0.082 R)
• M6: 4,425,554 km (0.079 R)
• M7: 5,895,802 km (0.043 R)
• M8: 9,762,607 km (0.109 R)
• M9: 10,653,313 km (0.115 R)
• M10: 19,216,594 km (0.062 R)
• M11: 20,080,672 km (0.113 R)
• M12: 29,849,413 km (0.041 R)
• M13: 30,424,617 km (0.117 R)
• M14: 35,809,841 km (0.084 R)
• M15: 38,590,416 km (0.114 R)
• M16: 40,944,189 km (0.082 R)
• M17: 49,213,062 km (0.062 R)
• M18: 58,887,855 km (0.098 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 277 - 16,635 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit