🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.31

Radius: 0.63

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.4 AU - 0.62 AU

Year: 127 Days

Day: 43.6 Hours

Environment

Temp: 232 °C

Axial Tilt: 13.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.2 AU - 1.2 AU

Year: 458 Days

Day: 34.9 Hours

Environment

Temp: 43 °C

Axial Tilt: 37.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 96,449,983 km

• M1: 46,375 km (0.095 R)
• M2: 137,929 km (0.11 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.06 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.67 AU - 2.45 AU

Year: 1030 Days

Day: 21.1 Hours

Environment

Temp: -50 °C

Axial Tilt: 32.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.07

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 2.04 AU - 2.98 AU

Year: 1385 Days

Day: 42.1 Hours

Environment

Temp: -67 °C

Axial Tilt: 18.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 4.35 AU - 5.25 AU

Year: 3662 Days

Day: 16.3 Hours

Environment

Temp: -119 °C

Axial Tilt: 2.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 96,449,983 km

• M1: 98,735 km (0.102 R)
• M2: 251,474 km (0.055 R)

Asteroid Belt

Center: 8.58 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 12.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 298.7

Radius: 10.8

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 11.7 AU - 13 AU

Year: 15115 Days

Day: 14.9 Hours

Environment

Temp: -168 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 96,449,983 km

• M1: 199,564 km (0.081 R)
• M2: 715,078 km (0.114 R)
• M3: 1,053,169 km (0.101 R)
• M4: 1,897,051 km (0.108 R)
• M5: 2,252,046 km (0.096 R)
• M6: 6,101,499 km (0.079 R)
• M7: 7,568,007 km (0.1 R)
• M8: 11,845,010 km (0.098 R)
• M9: 12,648,350 km (0.057 R)
• M10: 13,304,786 km (0.075 R)
• M11: 17,583,584 km (0.1 R)
• M12: 25,409,946 km (0.047 R)
• M13: 27,528,701 km (0.101 R)
• M14: 41,712,673 km (0.093 R)
• M15: 45,478,201 km (0.088 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 530.8

Radius: 4.5

Gravity: 26.21 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 12.12 AU - 18.34 AU

Year: 20699 Days

Day: 16.5 Hours

Environment

Temp: -181 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 96,449,983 km

• M1: 55,950 km (0.066 R)
• M2: 239,656 km (0.084 R)
• M3: 432,338 km (0.115 R)
• M4: 708,196 km (0.091 R)
• M5: 1,240,765 km (0.1 R)
• M6: 2,123,392 km (0.032 R)
• M7: 2,441,437 km (0.09 R)
• M8: 2,889,034 km (0.108 R)
• M9: 3,530,360 km (0.044 R)
• M10: 3,734,112 km (0.084 R)
• M11: 3,976,611 km (0.088 R)
• M12: 4,980,412 km (0.1 R)
• M13: 6,183,927 km (0.101 R)
• M14: 7,761,886 km (0.039 R)
• M15: 12,204,793 km (0.114 R)
• M16: 13,498,066 km (0.05 R)
• M17: 13,781,554 km (0.095 R)
• M18: 14,433,801 km (0.092 R)
• M19: 14,805,103 km (0.116 R)
• M20: 20,318,682 km (0.12 R)
• M21: 23,425,979 km (0.041 R)
• M22: 27,396,905 km (0.094 R)
• M23: 30,078,597 km (0.114 R)
• M24: 32,421,748 km (0.08 R)
• M25: 33,314,847 km (0.093 R)
• M26: 38,734,928 km (0.107 R)
• M27: 42,860,089 km (0.095 R)
• M28: 47,431,351 km (0.074 R)
• M29: 57,157,307 km (0.053 R)
• M30: 66,688,487 km (0.068 R)
• M31: 69,174,055 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 20 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 575.2

Radius: 6.8

Gravity: 12.44 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 16.76 AU - 23.24 AU

Year: 31149 Days

Day: 21.6 Hours

Environment

Temp: -205 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 96,449,983 km

• M1: 84,523 km (0.115 R)
• M2: 306,227 km (0.115 R)
• M3: 1,055,712 km (0.1 R)
• M4: 1,663,678 km (0.104 R)
• M5: 2,023,760 km (0.119 R)
• M6: 2,508,457 km (0.078 R)
• M7: 3,485,032 km (0.092 R)
• M8: 5,005,395 km (0.04 R)
• M9: 6,023,558 km (0.084 R)
• M10: 6,533,687 km (0.094 R)
• M11: 6,823,907 km (0.091 R)
• M12: 9,342,537 km (0.095 R)
• M13: 11,010,403 km (0.088 R)
• M14: 20,795,600 km (0.118 R)
• M15: 25,227,886 km (0.096 R)
• M16: 28,423,745 km (0.114 R)
• M17: 32,295,188 km (0.077 R)
• M18: 35,013,830 km (0.096 R)
• M19: 36,807,359 km (0.119 R)
• M20: 42,386,612 km (0.111 R)
• M21: 43,058,157 km (0.099 R)
• M22: 43,907,424 km (0.119 R)
• M23: 46,344,672 km (0.118 R)
• M24: 48,321,907 km (0.093 R)
• M25: 53,802,725 km (0.052 R)
• M26: 56,388,673 km (0.107 R)
• M27: 61,164,735 km (0.109 R)
• M28: 62,887,354 km (0.119 R)
• M29: 65,531,347 km (0.116 R)
• M30: 79,614,341 km (0.071 R)
• M31: 85,609,177 km (0.118 R)
• M32: 91,339,374 km (0.104 R)

Kuiper Belt

Range: 31.5 - 56.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 413 - 13,512 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit