🌌 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: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.88

Radius: 1.29

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.54 AU - 0.68 AU

Year: 313 Days

Day: 21.4 Hours

Environment

Temp: -131 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 226.5

Radius: 12.1

Gravity: 1.55 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.69 AU - 1.05 AU

Year: 532 Days

Day: 8.1 Hours

Environment

Temp: -153 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 58,307,566 km

• M1: 150,495 km (0.097 R)
• M2: 545,135 km (0.071 R)
• M3: 1,121,386 km (0.105 R)
• M4: 1,796,072 km (0.072 R)
• M5: 2,483,624 km (0.088 R)
• M6: 3,048,206 km (0.112 R)
• M7: 4,410,444 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291

Radius: 9.6

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 2.06 AU - 2.88 AU

Year: 2547 Days

Day: 7.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 120.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 58,307,566 km

• M1: 132,095 km (0.114 R)
• M2: 484,248 km (0.118 R)
• M3: 1,376,001 km (0.117 R)
• M4: 2,560,517 km (0.118 R)
• M5: 3,158,909 km (0.12 R)
• M6: 3,475,308 km (0.096 R)
• M7: 4,594,151 km (0.082 R)
• M8: 4,918,479 km (0.108 R)
• M9: 5,389,413 km (0.073 R)
• M10: 6,622,997 km (0.108 R)
• M11: 7,117,717 km (0.114 R)
• M12: 7,891,587 km (0.094 R)
• M13: 8,629,104 km (0.099 R)
• M14: 8,998,910 km (0.113 R)
• M15: 10,138,846 km (0.108 R)
• M16: 10,516,282 km (0.057 R)
• M17: 10,867,537 km (0.098 R)
• M18: 11,742,535 km (0.102 R)
• M19: 12,044,424 km (0.118 R)
• M20: 13,840,346 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.5

Radius: 11.5

Gravity: 1.52 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 2.19 AU - 3.31 AU

Year: 2992 Days

Day: 12.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 58,307,566 km

• M1: 143,016 km (0.089 R)
• M2: 546,780 km (0.08 R)
• M3: 1,065,436 km (0.085 R)
• M4: 1,596,808 km (0.067 R)
• M5: 1,990,549 km (0.074 R)
• M6: 2,794,339 km (0.067 R)
• M7: 3,666,793 km (0.088 R)
• M8: 4,515,761 km (0.054 R)
• M9: 5,535,720 km (0.12 R)
• M10: 6,882,400 km (0.077 R)
• M11: 7,604,808 km (0.099 R)
• M12: 8,615,790 km (0.108 R)
• M13: 9,551,674 km (0.117 R)
• M14: 9,977,879 km (0.068 R)
• M15: 10,623,394 km (0.085 R)
• M16: 11,588,599 km (0.087 R)
• M17: 12,846,568 km (0.091 R)
• M18: 13,858,597 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15

Radius: 9.5

Gravity: 0.17 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 3.82 AU - 4.32 AU

Year: 5386 Days

Day: 12.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 58,307,566 km

• M1: 122,670 km (0.108 R)
• M2: 753,375 km (0.116 R)
• M3: 2,010,147 km (0.057 R)
• M4: 3,933,078 km (0.119 R)
• M5: 4,388,005 km (0.105 R)
• M6: 5,787,493 km (0.086 R)
• M7: 7,028,407 km (0.107 R)
• M8: 7,416,913 km (0.048 R)
• M9: 7,795,695 km (0.116 R)

Planet 6 - Ice Giant

Semi-Major Axis: 5.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 671.8

Radius: 7.5

Gravity: 11.94 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 4.7 AU - 7.1 AU

Year: 9401 Days

Day: 19.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 58,307,566 km

• M1: 93,349 km (0.088 R)
• M2: 333,603 km (0.1 R)
• M3: 858,542 km (0.104 R)
• M4: 1,217,128 km (0.102 R)
• M5: 1,505,254 km (0.088 R)
• M6: 1,966,165 km (0.076 R)
• M7: 2,292,887 km (0.074 R)
• M8: 3,259,738 km (0.107 R)
• M9: 5,426,364 km (0.109 R)
• M10: 6,617,911 km (0.104 R)
• M11: 9,700,674 km (0.048 R)
• M12: 11,068,746 km (0.055 R)
• M13: 11,443,489 km (0.106 R)
• M14: 14,245,308 km (0.066 R)
• M15: 18,500,469 km (0.103 R)
• M16: 19,957,104 km (0.1 R)
• M17: 24,511,910 km (0.094 R)
• M18: 25,057,344 km (0.08 R)
• M19: 26,361,090 km (0.114 R)
• M20: 27,126,133 km (0.094 R)
• M21: 28,901,411 km (0.117 R)
• M22: 33,899,775 km (0.065 R)
• M23: 34,576,556 km (0.064 R)
• M24: 35,493,142 km (0.083 R)
• M25: 37,854,993 km (0.079 R)
• M26: 41,079,276 km (0.11 R)
• M27: 42,497,015 km (0.076 R)
• M28: 45,429,582 km (0.053 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 777.3

Radius: 4.1

Gravity: 46.24 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 6.14 AU - 8.2 AU

Year: 12595 Days

Day: 17.1 Hours

Environment

Temp: -214 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 58,307,566 km

• M1: 53,556 km (0.111 R)
• M2: 402,119 km (0.08 R)
• M3: 994,377 km (0.089 R)
• M4: 1,236,277 km (0.094 R)
• M5: 2,163,634 km (0.089 R)
• M6: 2,360,954 km (0.061 R)
• M7: 2,591,783 km (0.07 R)
• M8: 2,724,028 km (0.101 R)
• M9: 2,978,045 km (0.068 R)
• M10: 3,641,362 km (0.113 R)
• M11: 4,305,726 km (0.103 R)
• M12: 5,647,768 km (0.099 R)
• M13: 6,138,001 km (0.064 R)
• M14: 6,615,218 km (0.092 R)
• M15: 7,688,283 km (0.072 R)
• M16: 7,962,047 km (0.05 R)
• M17: 9,224,354 km (0.065 R)
• M18: 11,714,112 km (0.106 R)
• M19: 12,571,607 km (0.12 R)
• M20: 13,734,581 km (0.101 R)
• M21: 14,002,510 km (0.101 R)
• M22: 16,723,546 km (0.034 R)
• M23: 17,572,364 km (0.081 R)
• M24: 18,775,730 km (0.101 R)
• M25: 19,022,865 km (0.085 R)
• M26: 20,377,474 km (0.034 R)
• M27: 24,627,998 km (0.098 R)
• M28: 27,590,634 km (0.068 R)
• M29: 30,668,162 km (0.088 R)
• M30: 33,602,674 km (0.054 R)
• M31: 39,212,295 km (0.09 R)
• M32: 41,536,746 km (0.03 R)
• M33: 42,096,691 km (0.057 R)
• M34: 43,088,824 km (0.039 R)
• M35: 43,806,894 km (0.077 R)
• M36: 47,517,370 km (0.103 R)
• M37: 49,998,750 km (0.093 R)
• M38: 53,549,755 km (0.104 R)
• M39: 55,386,667 km (0.116 R)
• M40: 56,235,336 km (0.12 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 368 - 15,154 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit