🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 50.3

Radius: 13.2

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.54 AU - 0.84 AU

Year: 376 Days

Day: 14.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 73,760,418 km

• M1: 164,109 km (0.117 R)
• M2: 681,418 km (0.115 R)
• M3: 1,311,525 km (0.119 R)
• M4: 1,748,500 km (0.071 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.3

Radius: 9.5

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.63 AU - 0.79 AU

Year: 392 Days

Day: 11.7 Hours

Environment

Temp: -138 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 73,760,418 km

• M1: 167,699 km (0.114 R)
• M2: 480,808 km (0.089 R)
• M3: 904,618 km (0.12 R)
• M4: 1,314,666 km (0.031 R)
• M5: 1,923,829 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378.1

Radius: 13.5

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.7 AU - 0.96 AU

Year: 496 Days

Day: 12.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 73,760,418 km

• M1: 168,148 km (0.108 R)
• M2: 661,671 km (0.065 R)
• M3: 1,261,708 km (0.08 R)
• M4: 1,871,320 km (0.081 R)
• M5: 2,353,922 km (0.044 R)
• M6: 2,799,724 km (0.058 R)
• M7: 3,258,391 km (0.103 R)
• M8: 3,767,323 km (0.103 R)
• M9: 4,289,270 km (0.089 R)
• M10: 4,787,281 km (0.03 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.9

Radius: 11.6

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.91 AU - 1.41 AU

Year: 820 Days

Day: 7.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,760,418 km

• M1: 144,811 km (0.099 R)
• M2: 513,569 km (0.118 R)
• M3: 915,090 km (0.074 R)
• M4: 1,718,580 km (0.047 R)
• M5: 2,187,270 km (0.115 R)
• M6: 2,610,333 km (0.071 R)
• M7: 3,016,192 km (0.093 R)
• M8: 4,006,381 km (0.039 R)
• M9: 4,402,965 km (0.03 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 437.1

Radius: 10.4

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.29 AU - 1.45 AU

Year: 1052 Days

Day: 8.5 Hours

Environment

Temp: -180 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,760,418 km

• M1: 129,402 km (0.085 R)
• M2: 488,886 km (0.094 R)
• M3: 961,017 km (0.059 R)
• M4: 1,418,936 km (0.059 R)
• M5: 2,494,993 km (0.119 R)
• M6: 2,942,590 km (0.117 R)
• M7: 3,471,269 km (0.076 R)
• M8: 3,938,912 km (0.044 R)
• M9: 4,415,381 km (0.059 R)
• M10: 4,858,939 km (0.05 R)
• M11: 5,332,267 km (0.058 R)
• M12: 6,203,225 km (0.107 R)
• M13: 6,542,513 km (0.05 R)
• M14: 6,916,658 km (0.053 R)
• M15: 7,305,014 km (0.107 R)
• M16: 8,150,840 km (0.112 R)
• M17: 8,636,584 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.2

Radius: 10.6

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 1.44 AU - 1.94 AU

Year: 1441 Days

Day: 10 Hours

Environment

Temp: -174 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 73,760,418 km

• M1: 131,796 km (0.106 R)
• M2: 526,734 km (0.046 R)
• M3: 1,250,339 km (0.081 R)
• M4: 1,632,562 km (0.064 R)
• M5: 2,119,054 km (0.117 R)
• M6: 2,845,950 km (0.082 R)
• M7: 3,445,837 km (0.034 R)
• M8: 3,926,495 km (0.078 R)
• M9: 4,408,350 km (0.105 R)
• M10: 5,069,722 km (0.119 R)
• M11: 5,710,151 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61.8

Radius: 11.6

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.78 AU - 2.28 AU

Year: 1897 Days

Day: 7.3 Hours

Environment

Temp: -186 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 73,760,418 km

• M1: 144,362 km (0.09 R)
• M2: 541,095 km (0.092 R)
• M3: 957,426 km (0.117 R)
• M4: 1,372,112 km (0.09 R)
• M5: 2,036,476 km (0.111 R)
• M6: 2,478,837 km (0.073 R)
• M7: 3,546,966 km (0.114 R)
• M8: 4,063,377 km (0.079 R)
• M9: 6,106,735 km (0.067 R)
• M10: 6,689,568 km (0.079 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.3

Radius: 9.7

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 3.26 AU - 5.02 AU

Year: 5526 Days

Day: 7.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 73,760,418 km

• M1: 120,576 km (0.042 R)
• M2: 838,197 km (0.119 R)
• M3: 1,148,463 km (0.108 R)
• M4: 1,537,268 km (0.096 R)
• M5: 2,062,506 km (0.117 R)
• M6: 2,673,912 km (0.025 R)
• M7: 3,030,703 km (0.112 R)
• M8: 3,401,856 km (0.107 R)
• M9: 4,464,599 km (0.107 R)
• M10: 4,901,574 km (0.088 R)
• M11: 5,836,112 km (0.086 R)
• M12: 6,522,318 km (0.063 R)
• M13: 9,458,475 km (0.087 R)
• M14: 10,033,679 km (0.111 R)
• M15: 11,017,883 km (0.115 R)
• M16: 11,533,697 km (0.119 R)
• M17: 12,065,367 km (0.068 R)
• M18: 12,915,233 km (0.104 R)
• M19: 13,310,471 km (0.05 R)
• M20: 15,853,784 km (0.101 R)
• M21: 16,307,215 km (0.061 R)
• M22: 16,614,190 km (0.101 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 747.3

Radius: 7.3

Gravity: 14.02 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 8.63 AU - 9.75 AU

Year: 18276 Days

Day: 20.4 Hours

Environment

Temp: -233 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 73,760,418 km

• M1: 92,152 km (0.039 R)
• M2: 612,154 km (0.056 R)
• M3: 1,034,768 km (0.092 R)
• M4: 1,924,876 km (0.119 R)
• M5: 2,437,548 km (0.116 R)
• M6: 2,986,273 km (0.068 R)
• M7: 3,222,338 km (0.096 R)
• M8: 5,280,506 km (0.075 R)
• M9: 5,907,321 km (0.041 R)
• M10: 6,848,740 km (0.101 R)
• M11: 8,971,983 km (0.09 R)
• M12: 11,183,189 km (0.095 R)
• M13: 12,616,935 km (0.065 R)
• M14: 13,028,329 km (0.046 R)
• M15: 13,377,939 km (0.1 R)
• M16: 13,733,833 km (0.077 R)
• M17: 17,310,718 km (0.115 R)
• M18: 20,509,569 km (0.119 R)
• M19: 22,446,861 km (0.106 R)
• M20: 24,082,116 km (0.053 R)
• M21: 25,795,161 km (0.087 R)
• M22: 32,685,938 km (0.088 R)
• M23: 33,072,499 km (0.04 R)
• M24: 34,250,283 km (0.117 R)
• M25: 35,863,846 km (0.087 R)
• M26: 37,527,523 km (0.074 R)
• M27: 38,378,287 km (0.112 R)
• M28: 42,366,566 km (0.072 R)
• M29: 43,599,252 km (0.091 R)
• M30: 46,948,749 km (0.084 R)
• M31: 56,341,400 km (0.095 R)
• M32: 57,269,655 km (0.091 R)
• M33: 57,643,650 km (0.041 R)
• M34: 60,308,437 km (0.095 R)
• M35: 63,452,984 km (0.115 R)
• M36: 64,659,790 km (0.098 R)
• M37: 67,952,888 km (0.114 R)
• M38: 68,582,545 km (0.109 R)
• M39: 69,428,073 km (0.039 R)
• M40: 72,442,320 km (0.103 R)
• M41: 72,879,894 km (0.079 R)
• M42: 73,539,620 km (0.12 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 400 - 17,918 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit