🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.8

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.53 AU - 0.75 AU

Year: 180 Days

Day: 43 Hours

Environment

Temp: 149 °C

Axial Tilt: 39.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.4 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 1.25 AU - 1.55 AU

Year: 582 Days

Day: 34.8 Hours

Environment

Temp: 12 °C

Axial Tilt: 35.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 66,185,831 km

• M1: 475,272 km (0.032 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.45

Radius: 1.43

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 2.53 AU - 2.89 AU

Year: 1568 Days

Day: 40.3 Hours

Environment

Temp: -73 °C

Axial Tilt: 41.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.88

Radius: 1.29

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 2.96 AU - 4.12 AU

Year: 2341 Days

Day: 36.8 Hours

Environment

Temp: -101 °C

Axial Tilt: 6.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,185,831 km

• M1: 31,715 km (0.103 R)

Asteroid Belt

Center: 4.81 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 91.9

Radius: 13.1

Gravity: 0.54 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 5.76 AU - 6.4 AU

Year: 5269 Days

Day: 7.2 Hours

Environment

Temp: -152 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 66,185,831 km

• M1: 163,062 km (0.083 R)
• M2: 737,518 km (0.104 R)
• M3: 1,422,676 km (0.112 R)
• M4: 2,481,978 km (0.102 R)
• M5: 3,975,863 km (0.029 R)
• M6: 4,454,277 km (0.105 R)
• M7: 5,482,014 km (0.085 R)
• M8: 6,847,394 km (0.079 R)
• M9: 7,481,539 km (0.079 R)
• M10: 8,614,743 km (0.099 R)
• M11: 9,222,858 km (0.111 R)
• M12: 10,066,441 km (0.053 R)
• M13: 11,220,439 km (0.058 R)
• M14: 13,365,373 km (0.108 R)
• M15: 13,963,465 km (0.052 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.8

Radius: 9.4

Gravity: 7.06 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 10.12 AU - 12.88 AU

Year: 13706 Days

Day: 12.5 Hours

Environment

Temp: -175 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 66,185,831 km

• M1: 117,734 km (0.103 R)
• M2: 868,864 km (0.051 R)
• M3: 1,230,592 km (0.111 R)
• M4: 1,585,588 km (0.113 R)
• M5: 2,026,902 km (0.053 R)
• M6: 5,158,434 km (0.042 R)
• M7: 5,758,620 km (0.097 R)
• M8: 6,171,211 km (0.073 R)
• M9: 6,806,703 km (0.075 R)
• M10: 9,687,509 km (0.09 R)
• M11: 10,435,648 km (0.08 R)
• M12: 12,786,130 km (0.101 R)
• M13: 14,904,585 km (0.099 R)
• M14: 15,326,451 km (0.103 R)
• M15: 18,748,353 km (0.106 R)
• M16: 22,464,663 km (0.076 R)
• M17: 26,747,950 km (0.103 R)
• M18: 28,863,264 km (0.037 R)
• M19: 40,449,170 km (0.103 R)
• M20: 57,156,709 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 443.8

Radius: 4.6

Gravity: 20.97 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 13.59 AU - 18.21 AU

Year: 22283 Days

Day: 20.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 66,185,831 km

• M1: 57,146 km (0.078 R)
• M2: 212,579 km (0.106 R)
• M3: 374,743 km (0.088 R)
• M4: 614,398 km (0.032 R)
• M5: 1,479,972 km (0.081 R)
• M6: 1,746,106 km (0.114 R)
• M7: 2,288,099 km (0.105 R)
• M8: 2,860,610 km (0.089 R)
• M9: 3,438,956 km (0.105 R)
• M10: 3,875,782 km (0.086 R)
• M11: 5,600,495 km (0.066 R)
• M12: 5,796,917 km (0.11 R)
• M13: 5,998,127 km (0.092 R)
• M14: 8,477,412 km (0.093 R)
• M15: 9,884,231 km (0.07 R)
• M16: 10,229,652 km (0.091 R)
• M17: 12,540,191 km (0.09 R)
• M18: 15,328,845 km (0.107 R)
• M19: 18,074,864 km (0.069 R)
• M20: 20,569,109 km (0.086 R)
• M21: 21,801,346 km (0.072 R)
• M22: 23,082,054 km (0.071 R)
• M23: 27,336,019 km (0.059 R)
• M24: 30,849,175 km (0.103 R)
• M25: 32,840,622 km (0.063 R)
• M26: 33,867,612 km (0.095 R)
• M27: 38,755,423 km (0.08 R)
• M28: 51,427,260 km (0.093 R)
• M29: 51,598,849 km (0.088 R)
• M30: 55,471,638 km (0.101 R)
• M31: 58,034,549 km (0.093 R)
• M32: 58,968,638 km (0.039 R)
• M33: 62,414,326 km (0.114 R)
• M34: 69,284,608 km (0.063 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 280.5

Radius: 3.5

Gravity: 22.9 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 13.74 AU - 20.92 AU

Year: 25356 Days

Day: 25 Hours

Environment

Temp: -182 °C

Axial Tilt: 145.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 66,185,831 km

• M1: 43,533 km (0.091 R)
• M2: 160,668 km (0.114 R)
• M3: 435,779 km (0.104 R)
• M4: 664,813 km (0.062 R)
• M5: 807,081 km (0.094 R)
• M6: 1,040,304 km (0.108 R)
• M7: 1,153,250 km (0.093 R)
• M8: 1,938,639 km (0.112 R)
• M9: 2,150,469 km (0.078 R)
• M10: 2,508,008 km (0.097 R)
• M11: 2,952,912 km (0.115 R)
• M12: 3,701,650 km (0.111 R)
• M13: 4,027,623 km (0.087 R)
• M14: 4,404,909 km (0.086 R)
• M15: 4,736,867 km (0.109 R)
• M16: 4,943,910 km (0.118 R)
• M17: 5,832,821 km (0.116 R)
• M18: 7,042,918 km (0.036 R)
• M19: 7,176,958 km (0.1 R)
• M20: 10,002,562 km (0.11 R)
• M21: 10,400,792 km (0.115 R)
• M22: 10,987,964 km (0.089 R)
• M23: 24,017,938 km (0.089 R)
• M24: 26,629,319 km (0.066 R)
• M25: 27,063,900 km (0.08 R)
• M26: 28,171,074 km (0.106 R)
• M27: 30,712,742 km (0.06 R)
• M28: 33,655,033 km (0.065 R)
• M29: 34,934,544 km (0.086 R)
• M30: 36,113,524 km (0.09 R)
• M31: 41,239,346 km (0.101 R)
• M32: 50,215,816 km (0.106 R)
• M33: 51,045,486 km (0.085 R)
• M34: 51,715,834 km (0.095 R)
• M35: 53,245,622 km (0.088 R)
• M36: 53,934,969 km (0.079 R)
• M37: 55,861,640 km (0.075 R)

Kuiper Belt

Range: 31.2 - 56.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 276 - 19,601 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit