🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.62

Radius: 0.83

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.47 AU - 0.67 AU

Year: 282 Days

Day: 22.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 10.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,867,843 km

• M1: 78,090 km (0.09 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.85

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.51 AU - 0.69 AU

Year: 305 Days

Day: 12.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 43.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,867,843 km

• M1: 90,058 km (0.079 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.57

Radius: 1.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.51 AU - 0.73 AU

Year: 320 Days

Day: 18.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 16.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,867,843 km

• M1: 107,860 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.6

Radius: 13.4

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.59 AU - 0.89 AU

Year: 418 Days

Day: 12.8 Hours

Environment

Temp: -148 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 46,867,843 km

• M1: 171,589 km (0.093 R)
• M2: 693,237 km (0.047 R)
• M3: 1,384,827 km (0.03 R)
• M4: 1,834,668 km (0.114 R)
• M5: 2,433,957 km (0.07 R)
• M6: 3,031,002 km (0.082 R)
• M7: 3,887,600 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 699

Radius: 12.8

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 0.71 AU - 1.17 AU

Year: 598 Days

Day: 10.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,867,843 km

• M1: 159,172 km (0.092 R)
• M2: 667,805 km (0.118 R)
• M3: 1,180,178 km (0.042 R)
• M4: 1,863,092 km (0.045 R)
• M5: 2,320,712 km (0.105 R)
• M6: 2,732,106 km (0.116 R)
• M7: 3,493,709 km (0.098 R)
• M8: 4,168,844 km (0.096 R)
• M9: 4,751,079 km (0.11 R)
• M10: 5,492,486 km (0.035 R)
• M11: 6,003,512 km (0.088 R)
• M12: 6,526,357 km (0.083 R)
• M13: 7,079,420 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 784.9

Radius: 13.6

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.04 AU - 1.18 AU

Year: 767 Days

Day: 10.9 Hours

Environment

Temp: -166 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,867,843 km

• M1: 169,195 km (0.055 R)
• M2: 737,966 km (0.094 R)
• M3: 1,492,239 km (0.102 R)
• M4: 2,498,733 km (0.085 R)
• M5: 3,139,611 km (0.069 R)
• M6: 3,755,804 km (0.069 R)
• M7: 4,289,869 km (0.115 R)
• M8: 5,455,236 km (0.083 R)
• M9: 6,561,662 km (0.107 R)
• M10: 7,066,704 km (0.107 R)
• M11: 7,621,264 km (0.114 R)
• M12: 8,204,994 km (0.111 R)
• M13: 8,818,196 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 663.1

Radius: 14.8

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.07 AU - 1.63 AU

Year: 1029 Days

Day: 9.4 Hours

Environment

Temp: -179 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,867,843 km

• M1: 184,005 km (0.115 R)
• M2: 809,624 km (0.117 R)
• M3: 1,301,053 km (0.089 R)
• M4: 2,118,306 km (0.085 R)
• M5: 4,568,420 km (0.074 R)
• M6: 6,576,771 km (0.084 R)
• M7: 7,201,791 km (0.1 R)
• M8: 7,715,061 km (0.07 R)
• M9: 8,410,991 km (0.065 R)
• M10: 9,120,533 km (0.1 R)
• M11: 9,899,190 km (0.117 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.6

Radius: 9.6

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 2.34 AU - 2.68 AU

Year: 2609 Days

Day: 11.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 46,867,843 km

• M1: 119,529 km (0.112 R)
• M2: 478,115 km (0.068 R)
• M3: 990,039 km (0.112 R)
• M4: 1,314,666 km (0.071 R)
• M5: 1,854,116 km (0.078 R)
• M6: 4,833,507 km (0.094 R)
• M7: 5,766,998 km (0.066 R)
• M8: 7,361,113 km (0.032 R)
• M9: 7,988,227 km (0.064 R)
• M10: 8,879,232 km (0.069 R)
• M11: 10,084,542 km (0.095 R)
• M12: 10,563,554 km (0.1 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 980.9

Radius: 13.1

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 3.99 AU - 5.57 AU

Year: 6856 Days

Day: 9.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 46,867,843 km

• M1: 165,605 km (0.094 R)
• M2: 873,203 km (0.119 R)
• M3: 1,338,452 km (0.069 R)
• M4: 1,807,591 km (0.101 R)
• M5: 3,110,589 km (0.107 R)
• M6: 4,209,235 km (0.108 R)
• M7: 4,619,133 km (0.12 R)
• M8: 5,583,890 km (0.112 R)
• M9: 6,498,831 km (0.119 R)
• M10: 8,411,739 km (0.119 R)
• M11: 8,844,376 km (0.115 R)
• M12: 9,991,193 km (0.12 R)
• M13: 12,974,474 km (0.111 R)
• M14: 13,553,268 km (0.086 R)
• M15: 14,700,384 km (0.107 R)
• M16: 15,780,780 km (0.098 R)
• M17: 17,464,803 km (0.106 R)
• M18: 21,187,397 km (0.09 R)
• M19: 23,744,024 km (0.111 R)
• M20: 27,716,745 km (0.074 R)
• M21: 30,972,594 km (0.053 R)
• M22: 32,322,565 km (0.072 R)
• M23: 34,475,428 km (0.066 R)
• M24: 40,763,325 km (0.087 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 397

Radius: 3.2

Gravity: 38.77 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 7.03 AU - 7.39 AU

Year: 12700 Days

Day: 18.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 46,867,843 km

• M1: 39,793 km (0.029 R)
• M2: 201,060 km (0.12 R)
• M3: 308,321 km (0.114 R)
• M4: 479,760 km (0.114 R)
• M5: 647,460 km (0.114 R)
• M6: 807,230 km (0.101 R)
• M7: 1,279,062 km (0.115 R)
• M8: 1,434,793 km (0.076 R)
• M9: 1,559,857 km (0.078 R)
• M10: 2,242,921 km (0.06 R)
• M11: 2,470,010 km (0.069 R)
• M12: 2,753,947 km (0.103 R)
• M13: 3,609,198 km (0.104 R)
• M14: 4,056,047 km (0.104 R)
• M15: 4,568,121 km (0.079 R)
• M16: 4,748,087 km (0.11 R)
• M17: 8,530,669 km (0.043 R)
• M18: 9,804,794 km (0.081 R)
• M19: 10,773,739 km (0.031 R)
• M20: 11,973,514 km (0.028 R)
• M21: 12,840,733 km (0.101 R)
• M22: 14,187,114 km (0.039 R)
• M23: 16,800,140 km (0.046 R)
• M24: 17,445,505 km (0.119 R)
• M25: 17,884,874 km (0.093 R)
• M26: 21,086,867 km (0.06 R)
• M27: 22,006,744 km (0.095 R)
• M28: 25,953,884 km (0.106 R)
• M29: 31,303,504 km (0.094 R)
• M30: 31,734,645 km (0.113 R)
• M31: 34,520,008 km (0.099 R)
• M32: 36,742,583 km (0.116 R)
• M33: 38,194,431 km (0.062 R)
• M34: 38,317,101 km (0.115 R)
• M35: 40,315,878 km (0.101 R)
• M36: 40,443,036 km (0.107 R)
• M37: 42,514,668 km (0.046 R)
• M38: 43,576,513 km (0.11 R)
• M39: 43,979,231 km (0.09 R)
• M40: 46,029,918 km (0.078 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 356 - 12,690 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit