🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.5 AU - 0.66 AU

Year: 285 Days

Day: 43.7 Hours

Environment

Temp: -123 °C

Axial Tilt: 24.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 433

Radius: 11.2

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 0.69 AU - 0.97 AU

Year: 488 Days

Day: 6.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 60,749,096 km

• M1: 139,724 km (0.076 R)
• M2: 533,316 km (0.027 R)
• M3: 941,120 km (0.058 R)
• M4: 1,301,950 km (0.11 R)
• M5: 2,008,052 km (0.11 R)
• M6: 2,642,048 km (0.076 R)
• M7: 3,006,768 km (0.101 R)
• M8: 3,486,977 km (0.087 R)
• M9: 4,162,112 km (0.061 R)
• M10: 4,573,656 km (0.11 R)
• M11: 5,164,866 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 937.5

Radius: 13.6

Gravity: 5.07 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.76 AU - 0.98 AU

Year: 524 Days

Day: 7 Hours

Environment

Temp: -141 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 60,749,096 km

• M1: 169,195 km (0.109 R)
• M2: 689,646 km (0.112 R)
• M3: 1,112,559 km (0.116 R)
• M4: 1,575,415 km (0.076 R)
• M5: 2,206,269 km (0.092 R)
• M6: 2,721,036 km (0.107 R)
• M7: 3,315,837 km (0.104 R)
• M8: 3,787,070 km (0.099 R)
• M9: 4,228,683 km (0.096 R)
• M10: 4,964,705 km (0.116 R)
• M11: 6,237,184 km (0.113 R)
• M12: 7,171,423 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.3

Radius: 13.2

Gravity: 2.48 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.84 AU - 1 AU

Year: 570 Days

Day: 12.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 60,749,096 km

• M1: 164,258 km (0.1 R)
• M2: 605,871 km (0.092 R)
• M3: 1,050,327 km (0.091 R)
• M4: 1,588,580 km (0.092 R)
• M5: 2,025,256 km (0.085 R)
• M6: 3,115,824 km (0.054 R)
• M7: 3,585,412 km (0.112 R)
• M8: 4,034,954 km (0.116 R)
• M9: 4,833,507 km (0.063 R)
• M10: 5,516,272 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 643.1

Radius: 14.7

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.12 AU - 1.3 AU

Year: 859 Days

Day: 10.7 Hours

Environment

Temp: -173 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,749,096 km

• M1: 182,809 km (0.107 R)
• M2: 689,945 km (0.103 R)
• M3: 1,243,158 km (0.103 R)
• M4: 2,631,427 km (0.106 R)
• M5: 3,512,259 km (0.027 R)
• M6: 4,114,989 km (0.086 R)
• M7: 5,840,600 km (0.059 R)
• M8: 6,349,682 km (0.116 R)
• M9: 7,044,713 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 956.4

Radius: 12.9

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.12 AU - 1.58 AU

Year: 1013 Days

Day: 7.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 60,749,096 km

• M1: 160,818 km (0.089 R)
• M2: 669,750 km (0.098 R)
• M3: 1,337,106 km (0.118 R)
• M4: 1,928,167 km (0.056 R)
• M5: 2,435,154 km (0.102 R)
• M6: 4,114,839 km (0.109 R)
• M7: 5,798,862 km (0.094 R)
• M8: 7,185,635 km (0.105 R)
• M9: 10,508,652 km (0.064 R)
• M10: 11,064,558 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39.2

Radius: 12.6

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.58 AU - 1.96 AU

Year: 1520 Days

Day: 9.2 Hours

Environment

Temp: -195 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 60,749,096 km

• M1: 156,629 km (0.081 R)
• M2: 710,739 km (0.091 R)
• M3: 1,754,933 km (0.074 R)
• M4: 2,406,581 km (0.076 R)
• M5: 3,182,545 km (0.054 R)
• M6: 3,915,724 km (0.103 R)
• M7: 4,356,589 km (0.087 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 156.8

Radius: 5.4

Gravity: 5.38 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 4.89 AU - 7.89 AU

Year: 10430 Days

Day: 19 Hours

Environment

Temp: -217 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,749,096 km

• M1: 67,469 km (0.1 R)
• M2: 405,261 km (0.056 R)
• M3: 1,628,522 km (0.077 R)
• M4: 1,949,859 km (0.038 R)
• M5: 2,393,267 km (0.108 R)
• M6: 2,683,038 km (0.105 R)
• M7: 3,988,279 km (0.097 R)
• M8: 4,648,754 km (0.028 R)
• M9: 5,210,793 km (0.117 R)
• M10: 5,847,033 km (0.115 R)
• M11: 7,272,700 km (0.111 R)
• M12: 7,483,633 km (0.059 R)
• M13: 8,995,470 km (0.09 R)
• M14: 12,964,750 km (0.099 R)
• M15: 16,962,155 km (0.107 R)
• M16: 17,147,058 km (0.062 R)
• M17: 18,028,189 km (0.111 R)
• M18: 21,855,501 km (0.063 R)
• M19: 22,147,965 km (0.065 R)
• M20: 23,040,914 km (0.088 R)
• M21: 25,782,595 km (0.107 R)
• M22: 28,646,646 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 866.5

Radius: 6.8

Gravity: 18.74 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 5.82 AU - 7.52 AU

Year: 11123 Days

Day: 23 Hours

Environment

Temp: -216 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 60,749,096 km

• M1: 85,869 km (0.093 R)
• M2: 1,038,808 km (0.066 R)
• M3: 1,645,577 km (0.097 R)
• M4: 2,307,248 km (0.092 R)
• M5: 2,591,484 km (0.092 R)
• M6: 3,640,763 km (0.102 R)
• M7: 4,410,594 km (0.095 R)
• M8: 4,721,608 km (0.112 R)
• M9: 5,743,661 km (0.11 R)
• M10: 7,455,359 km (0.115 R)
• M11: 12,573,103 km (0.117 R)
• M12: 17,944,265 km (0.029 R)
• M13: 18,577,363 km (0.036 R)
• M14: 21,434,981 km (0.085 R)
• M15: 27,898,507 km (0.099 R)
• M16: 28,320,971 km (0.119 R)
• M17: 32,201,690 km (0.051 R)
• M18: 37,692,979 km (0.112 R)
• M19: 39,653,608 km (0.092 R)
• M20: 55,316,954 km (0.102 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 926.7

Radius: 3.2

Gravity: 90.5 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 6.1 AU - 8.14 AU

Year: 12267 Days

Day: 20.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 60,749,096 km

• M1: 43,084 km (0.058 R)
• M2: 240,553 km (0.119 R)
• M3: 365,168 km (0.1 R)
• M4: 1,848,431 km (0.118 R)
• M5: 2,085,544 km (0.103 R)
• M6: 2,755,892 km (0.103 R)
• M7: 3,450,624 km (0.12 R)
• M8: 4,042,882 km (0.085 R)
• M9: 5,211,242 km (0.098 R)
• M10: 5,425,765 km (0.115 R)
• M11: 7,674,072 km (0.099 R)
• M12: 14,299,462 km (0.106 R)
• M13: 16,104,061 km (0.119 R)
• M14: 19,382,499 km (0.099 R)
• M15: 19,810,498 km (0.045 R)
• M16: 21,676,582 km (0.098 R)
• M17: 24,541,082 km (0.088 R)
• M18: 29,071,653 km (0.032 R)
• M19: 33,025,525 km (0.049 R)
• M20: 38,117,986 km (0.074 R)
• M21: 40,293,438 km (0.087 R)
• M22: 46,699,519 km (0.099 R)
• M23: 50,948,248 km (0.053 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 204 - 12,735 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit