🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.11

Radius: 0.41

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.55 AU - 0.69 AU

Year: 315 Days

Day: 40.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 39.9 °

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: 312.9

Radius: 14.9

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.76 AU - 0.9 AU

Year: 488 Days

Day: 10.5 Hours

Environment

Temp: -150 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,199,628 km

• M1: 212,579 km (0.078 R)
• M2: 713,432 km (0.076 R)
• M3: 1,231,041 km (0.1 R)
• M4: 1,834,219 km (0.082 R)
• M5: 2,802,118 km (0.087 R)
• M6: 3,353,835 km (0.112 R)
• M7: 3,965,989 km (0.08 R)
• M8: 4,557,200 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642.8

Radius: 11.5

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 2.13 AU - 2.51 AU

Year: 2282 Days

Day: 9.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,199,628 km

• M1: 144,661 km (0.057 R)
• M2: 545,284 km (0.082 R)
• M3: 940,372 km (0.106 R)
• M4: 1,314,666 km (0.043 R)
• M5: 1,879,099 km (0.114 R)
• M6: 2,381,299 km (0.069 R)
• M7: 2,774,592 km (0.109 R)
• M8: 3,162,499 km (0.09 R)
• M9: 3,622,363 km (0.119 R)
• M10: 4,185,599 km (0.107 R)
• M11: 4,982,207 km (0.104 R)
• M12: 7,504,278 km (0.1 R)
• M13: 8,108,205 km (0.112 R)
• M14: 8,485,939 km (0.085 R)
• M15: 9,866,428 km (0.092 R)
• M16: 11,005,616 km (0.099 R)
• M17: 14,902,940 km (0.092 R)
• M18: 16,500,346 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687

Radius: 13.9

Gravity: 3.56 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 2.47 AU - 2.55 AU

Year: 2568 Days

Day: 10.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 142.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,199,628 km

• M1: 174,431 km (0.074 R)
• M2: 676,182 km (0.107 R)
• M3: 1,365,829 km (0.086 R)
• M4: 2,042,609 km (0.098 R)
• M5: 2,516,835 km (0.11 R)
• M6: 2,952,464 km (0.078 R)
• M7: 3,582,570 km (0.104 R)
• M8: 5,423,970 km (0.074 R)
• M9: 6,510,799 km (0.091 R)
• M10: 7,645,648 km (0.095 R)
• M11: 8,605,318 km (0.119 R)
• M12: 9,465,207 km (0.059 R)
• M13: 11,236,146 km (0.102 R)
• M14: 12,519,547 km (0.105 R)
• M15: 13,714,983 km (0.056 R)
• M16: 14,176,493 km (0.097 R)
• M17: 14,888,429 km (0.073 R)
• M18: 15,874,728 km (0.094 R)
• M19: 17,650,604 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 221.8

Radius: 11

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 2.28 AU - 3.12 AU

Year: 2865 Days

Day: 7.5 Hours

Environment

Temp: -198 °C

Axial Tilt: 47.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,199,628 km

• M1: 136,882 km (0.054 R)
• M2: 592,408 km (0.068 R)
• M3: 1,270,984 km (0.12 R)
• M4: 2,584,902 km (0.072 R)
• M5: 2,943,936 km (0.069 R)
• M6: 5,670,358 km (0.059 R)
• M7: 7,609,744 km (0.105 R)
• M8: 12,906,706 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 939.7

Radius: 13

Gravity: 5.56 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 2.84 AU - 3.22 AU

Year: 3405 Days

Day: 10.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 52,199,628 km

• M1: 161,715 km (0.115 R)
• M2: 1,072,467 km (0.072 R)
• M3: 1,522,757 km (0.092 R)
• M4: 2,019,870 km (0.097 R)
• M5: 2,436,201 km (0.104 R)
• M6: 3,388,093 km (0.116 R)
• M7: 4,294,057 km (0.104 R)
• M8: 4,718,915 km (0.09 R)
• M9: 5,681,278 km (0.118 R)
• M10: 6,523,963 km (0.079 R)
• M11: 6,959,742 km (0.111 R)
• M12: 7,481,539 km (0.084 R)
• M13: 7,959,504 km (0.107 R)
• M14: 8,385,409 km (0.039 R)
• M15: 9,360,788 km (0.108 R)
• M16: 9,916,544 km (0.066 R)
• M17: 12,647,453 km (0.094 R)
• M18: 15,350,986 km (0.115 R)
• M19: 16,181,403 km (0.068 R)
• M20: 17,393,894 km (0.104 R)
• M21: 19,484,225 km (0.105 R)
• M22: 20,260,488 km (0.115 R)
• M23: 23,140,696 km (0.067 R)
• M24: 24,011,505 km (0.106 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 821.3

Radius: 6.2

Gravity: 21.37 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 7.02 AU - 10.22 AU

Year: 16341 Days

Day: 21.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 52,199,628 km

• M1: 77,043 km (0.092 R)
• M2: 296,653 km (0.034 R)
• M3: 730,636 km (0.117 R)
• M4: 1,233,584 km (0.105 R)
• M5: 1,642,884 km (0.033 R)
• M6: 2,059,663 km (0.115 R)
• M7: 2,802,118 km (0.118 R)
• M8: 3,000,185 km (0.088 R)
• M9: 3,234,306 km (0.079 R)
• M10: 4,661,619 km (0.033 R)
• M11: 8,845,423 km (0.108 R)
• M12: 11,690,326 km (0.114 R)
• M13: 12,805,129 km (0.105 R)
• M14: 15,320,019 km (0.105 R)
• M15: 16,253,061 km (0.113 R)
• M16: 18,231,642 km (0.057 R)
• M17: 19,998,692 km (0.095 R)
• M18: 21,112,149 km (0.111 R)
• M19: 21,684,062 km (0.11 R)
• M20: 22,858,854 km (0.088 R)
• M21: 24,075,384 km (0.106 R)
• M22: 28,442,146 km (0.095 R)
• M23: 30,447,804 km (0.112 R)
• M24: 30,811,327 km (0.078 R)
• M25: 33,437,069 km (0.098 R)
• M26: 35,401,588 km (0.08 R)
• M27: 36,753,055 km (0.056 R)
• M28: 37,580,332 km (0.11 R)
• M29: 39,415,149 km (0.073 R)
• M30: 42,806,384 km (0.086 R)
• M31: 44,184,629 km (0.089 R)
• M32: 50,499,753 km (0.053 R)
• M33: 58,131,189 km (0.058 R)
• M34: 68,342,740 km (0.081 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 174.2

Radius: 4.9

Gravity: 7.26 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 8.01 AU - 13.35 AU

Year: 22536 Days

Day: 15.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 52,199,628 km

• M1: 66,721 km (0.05 R)
• M2: 282,590 km (0.079 R)
• M3: 484,398 km (0.078 R)
• M4: 687,103 km (0.067 R)
• M5: 925,412 km (0.072 R)
• M6: 2,110,228 km (0.094 R)
• M7: 2,990,162 km (0.081 R)
• M8: 3,733,813 km (0.111 R)
• M9: 4,177,521 km (0.108 R)
• M10: 4,563,184 km (0.104 R)
• M11: 6,461,730 km (0.048 R)
• M12: 6,815,679 km (0.028 R)
• M13: 8,501,049 km (0.026 R)
• M14: 11,043,614 km (0.098 R)
• M15: 11,895,424 km (0.063 R)
• M16: 12,851,355 km (0.114 R)
• M17: 13,222,657 km (0.115 R)
• M18: 18,486,407 km (0.084 R)
• M19: 19,521,625 km (0.109 R)
• M20: 19,765,918 km (0.108 R)
• M21: 21,969,046 km (0.117 R)
• M22: 24,424,695 km (0.092 R)
• M23: 25,378,830 km (0.086 R)
• M24: 28,703,493 km (0.081 R)
• M25: 29,765,488 km (0.065 R)
• M26: 41,192,522 km (0.075 R)
• M27: 42,953,139 km (0.101 R)
• M28: 44,481,580 km (0.058 R)
• M29: 45,472,966 km (0.103 R)
• M30: 45,758,847 km (0.078 R)
• M31: 46,768,932 km (0.053 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 169 - 12,015 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit