🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.89

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.56 AU - 0.64 AU

Year: 296 Days

Day: 32.7 Hours

Environment

Temp: -135 °C

Axial Tilt: 17.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.4

Radius: 11.1

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.73 AU - 0.95 AU

Year: 489 Days

Day: 8.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 74,987,803 km

• M1: 138,378 km (0.085 R)
• M2: 576,999 km (0.109 R)
• M3: 975,977 km (0.089 R)
• M4: 1,490,294 km (0.118 R)
• M5: 1,839,904 km (0.053 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 490.6

Radius: 14.2

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 2.35 AU - 3.13 AU

Year: 2884 Days

Day: 6.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,987,803 km

• M1: 184,753 km (0.086 R)
• M2: 667,356 km (0.061 R)
• M3: 3,346,504 km (0.032 R)
• M4: 4,082,526 km (0.078 R)
• M5: 6,058,564 km (0.085 R)
• M6: 8,156,674 km (0.025 R)
• M7: 9,009,831 km (0.045 R)
• M8: 9,458,325 km (0.117 R)
• M9: 10,251,493 km (0.113 R)
• M10: 11,088,493 km (0.115 R)
• M11: 15,284,714 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 803

Radius: 13.9

Gravity: 4.16 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 2.84 AU - 4.44 AU

Year: 4416 Days

Day: 7 Hours

Environment

Temp: -203 °C

Axial Tilt: 22.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 74,987,803 km

• M1: 172,935 km (0.114 R)
• M2: 943,813 km (0.093 R)
• M3: 1,421,928 km (0.101 R)
• M4: 3,027,113 km (0.076 R)
• M5: 3,476,056 km (0.116 R)
• M6: 4,559,444 km (0.073 R)
• M7: 5,316,708 km (0.084 R)
• M8: 5,827,884 km (0.1 R)
• M9: 8,818,046 km (0.098 R)
• M10: 10,512,242 km (0.111 R)
• M11: 12,711,181 km (0.066 R)
• M12: 14,536,874 km (0.107 R)
• M13: 16,060,678 km (0.105 R)
• M14: 18,318,409 km (0.053 R)
• M15: 19,159,747 km (0.1 R)
• M16: 25,627,611 km (0.064 R)
• M17: 28,785,323 km (0.095 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.6

Radius: 10.2

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 3.68 AU - 4.62 AU

Year: 5375 Days

Day: 12.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 74,987,803 km

• M1: 129,253 km (0.12 R)
• M2: 465,100 km (0.096 R)
• M3: 1,235,230 km (0.1 R)
• M4: 1,565,841 km (0.083 R)
• M5: 2,050,239 km (0.073 R)
• M6: 2,458,043 km (0.086 R)
• M7: 3,134,973 km (0.096 R)
• M8: 4,808,375 km (0.083 R)
• M9: 5,346,030 km (0.099 R)
• M10: 6,420,890 km (0.11 R)
• M11: 6,819,868 km (0.077 R)
• M12: 8,366,710 km (0.058 R)
• M13: 9,415,840 km (0.027 R)
• M14: 9,891,411 km (0.117 R)
• M15: 12,093,941 km (0.042 R)
• M16: 12,466,888 km (0.119 R)
• M17: 13,532,324 km (0.103 R)
• M18: 14,815,575 km (0.073 R)
• M19: 15,350,986 km (0.109 R)
• M20: 15,678,306 km (0.105 R)
• M21: 16,234,361 km (0.099 R)
• M22: 20,965,842 km (0.076 R)
• M23: 21,572,761 km (0.113 R)
• M24: 22,191,348 km (0.114 R)
• M25: 24,486,927 km (0.052 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 78.1

Radius: 5.6

Gravity: 2.49 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 7.35 AU - 9.89 AU

Year: 16091 Days

Day: 20.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 74,987,803 km

• M1: 69,713 km (0.094 R)
• M2: 381,774 km (0.067 R)
• M3: 768,783 km (0.087 R)
• M4: 1,245,552 km (0.103 R)
• M5: 2,655,063 km (0.039 R)
• M6: 2,857,170 km (0.038 R)
• M7: 3,526,022 km (0.068 R)
• M8: 3,932,330 km (0.064 R)
• M9: 4,394,288 km (0.063 R)
• M10: 8,856,044 km (0.079 R)
• M11: 11,613,133 km (0.103 R)
• M12: 12,005,977 km (0.117 R)
• M13: 16,192,474 km (0.094 R)
• M14: 20,968,685 km (0.042 R)
• M15: 22,445,216 km (0.085 R)
• M16: 26,268,788 km (0.085 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 686.3

Radius: 7.4

Gravity: 12.53 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 8.27 AU - 9.07 AU

Year: 16232 Days

Day: 19.8 Hours

Environment

Temp: -225 °C

Axial Tilt: 92.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 74,987,803 km

• M1: 111,002 km (0.106 R)
• M2: 400,174 km (0.041 R)
• M3: 972,685 km (0.093 R)
• M4: 1,394,103 km (0.065 R)
• M5: 4,076,841 km (0.069 R)
• M6: 5,574,914 km (0.101 R)
• M7: 6,000,371 km (0.108 R)
• M8: 9,940,629 km (0.079 R)
• M9: 10,978,539 km (0.103 R)
• M10: 12,343,021 km (0.103 R)
• M11: 19,546,159 km (0.088 R)
• M12: 21,823,637 km (0.049 R)
• M13: 22,491,741 km (0.063 R)
• M14: 30,175,237 km (0.089 R)
• M15: 31,605,692 km (0.118 R)
• M16: 36,833,838 km (0.111 R)
• M17: 37,102,665 km (0.102 R)
• M18: 41,005,375 km (0.036 R)
• M19: 42,022,042 km (0.05 R)
• M20: 50,602,826 km (0.083 R)
• M21: 52,448,565 km (0.058 R)
• M22: 58,802,435 km (0.1 R)
• M23: 62,736,111 km (0.105 R)
• M24: 65,650,876 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 644.9

Radius: 5.2

Gravity: 23.85 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 9.93 AU - 10.11 AU

Year: 20167 Days

Day: 15.4 Hours

Environment

Temp: -237 °C

Axial Tilt: 49.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 74,987,803 km

• M1: 64,626 km (0.066 R)
• M2: 253,120 km (0.112 R)
• M3: 432,787 km (0.104 R)
• M4: 884,423 km (0.062 R)
• M5: 1,180,028 km (0.12 R)
• M6: 1,605,933 km (0.1 R)
• M7: 1,835,865 km (0.116 R)
• M8: 2,362,150 km (0.114 R)
• M9: 2,566,052 km (0.106 R)
• M10: 2,856,272 km (0.108 R)
• M11: 3,088,149 km (0.077 R)
• M12: 6,360,303 km (0.028 R)
• M13: 8,825,377 km (0.093 R)
• M14: 9,542,848 km (0.046 R)
• M15: 10,721,530 km (0.034 R)
• M16: 11,796,989 km (0.096 R)
• M17: 14,834,873 km (0.091 R)
• M18: 15,296,382 km (0.092 R)
• M19: 15,530,653 km (0.069 R)
• M20: 16,656,077 km (0.041 R)
• M21: 17,920,927 km (0.047 R)
• M22: 18,181,377 km (0.101 R)
• M23: 20,356,829 km (0.043 R)
• M24: 21,998,816 km (0.109 R)
• M25: 23,415,657 km (0.098 R)
• M26: 25,000,048 km (0.109 R)
• M27: 27,566,100 km (0.102 R)
• M28: 28,972,171 km (0.086 R)
• M29: 31,546,601 km (0.118 R)
• M30: 41,829,958 km (0.086 R)
• M31: 42,750,135 km (0.05 R)
• M32: 46,565,778 km (0.084 R)
• M33: 47,719,926 km (0.101 R)
• M34: 48,220,480 km (0.093 R)
• M35: 48,893,222 km (0.089 R)
• M36: 52,527,852 km (0.065 R)
• M37: 56,338,708 km (0.063 R)
• M38: 61,110,581 km (0.103 R)
• M39: 61,503,574 km (0.064 R)
• M40: 62,096,281 km (0.062 R)
• M41: 66,975,266 km (0.048 R)
• M42: 69,721,733 km (0.114 R)
• M43: 74,763,331 km (0.093 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 190 - 14,765 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit