🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.69

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.43 AU - 0.67 AU

Year: 263 Days

Day: 28 Hours

Environment

Temp: -125 °C

Axial Tilt: 27.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.53 AU - 0.65 AU

Year: 293 Days

Day: 31 Hours

Environment

Temp: -128 °C

Axial Tilt: 22.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.6

Radius: 8.7

Gravity: 4.34 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.89 AU - 1.07 AU

Year: 626 Days

Day: 13.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 47,343,347 km

• M1: 109,506 km (0.091 R)
• M2: 381,475 km (0.116 R)
• M3: 655,538 km (0.048 R)
• M4: 1,172,847 km (0.118 R)
• M5: 1,466,209 km (0.109 R)
• M6: 1,887,177 km (0.1 R)
• M7: 2,232,000 km (0.12 R)
• M8: 2,549,597 km (0.042 R)
• M9: 2,972,809 km (0.086 R)
• M10: 3,688,934 km (0.095 R)
• M11: 3,973,918 km (0.119 R)
• M12: 4,315,599 km (0.111 R)
• M13: 4,588,316 km (0.067 R)
• M14: 5,216,478 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 391.4

Radius: 12.4

Gravity: 2.55 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 1.1 AU - 1.2 AU

Year: 796 Days

Day: 5.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,343,347 km

• M1: 154,684 km (0.093 R)
• M2: 601,832 km (0.079 R)
• M3: 1,023,100 km (0.111 R)
• M4: 1,454,241 km (0.11 R)
• M5: 2,553,037 km (0.05 R)
• M6: 3,098,621 km (0.049 R)
• M7: 3,900,166 km (0.107 R)
• M8: 4,410,893 km (0.085 R)
• M9: 5,426,064 km (0.051 R)
• M10: 6,392,616 km (0.12 R)
• M11: 7,126,543 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.8

Radius: 10.6

Gravity: 5.68 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 1.24 AU - 1.46 AU

Year: 1013 Days

Day: 12.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,343,347 km

• M1: 131,796 km (0.051 R)
• M2: 476,469 km (0.066 R)
• M3: 838,945 km (0.107 R)
• M4: 1,207,554 km (0.119 R)
• M5: 1,703,621 km (0.107 R)
• M6: 2,162,138 km (0.075 R)
• M7: 2,535,684 km (0.091 R)
• M8: 4,349,708 km (0.117 R)
• M9: 4,750,181 km (0.119 R)
• M10: 5,545,743 km (0.105 R)
• M11: 6,673,711 km (0.071 R)
• M12: 7,621,563 km (0.091 R)
• M13: 8,902,120 km (0.057 R)
• M14: 9,349,867 km (0.082 R)
• M15: 10,109,675 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 41

Radius: 14

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 4 AU - 5.96 AU

Year: 7176 Days

Day: 8.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 47,343,347 km

• M1: 174,132 km (0.093 R)
• M2: 651,798 km (0.086 R)
• M3: 1,582,596 km (0.107 R)
• M4: 2,042,011 km (0.096 R)
• M5: 5,268,987 km (0.047 R)
• M6: 7,750,815 km (0.119 R)
• M7: 14,586,989 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 348.2

Radius: 10.1

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 5.15 AU - 6.51 AU

Year: 9089 Days

Day: 11.3 Hours

Environment

Temp: -229 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 47,343,347 km

• M1: 125,662 km (0.076 R)
• M2: 452,085 km (0.115 R)
• M3: 1,286,691 km (0.073 R)
• M4: 2,794,638 km (0.089 R)
• M5: 4,787,132 km (0.086 R)
• M6: 6,340,107 km (0.092 R)
• M7: 6,996,692 km (0.065 R)
• M8: 8,816,401 km (0.066 R)
• M9: 11,824,964 km (0.102 R)
• M10: 13,310,022 km (0.066 R)
• M11: 13,983,063 km (0.065 R)
• M12: 15,703,588 km (0.099 R)
• M13: 17,230,533 km (0.116 R)
• M14: 19,205,075 km (0.07 R)
• M15: 22,403,628 km (0.099 R)
• M16: 24,252,508 km (0.114 R)
• M17: 25,768,832 km (0.118 R)
• M18: 27,616,515 km (0.089 R)
• M19: 27,978,243 km (0.112 R)
• M20: 29,082,424 km (0.102 R)
• M21: 31,573,977 km (0.118 R)
• M22: 34,937,236 km (0.073 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 344.1

Radius: 3.4

Gravity: 29.77 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 6.3 AU - 9.14 AU

Year: 13850 Days

Day: 22.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 47,343,347 km

• M1: 42,336 km (0.096 R)
• M2: 158,723 km (0.103 R)
• M3: 295,755 km (0.036 R)
• M4: 461,809 km (0.102 R)
• M5: 595,549 km (0.098 R)
• M6: 854,653 km (0.065 R)
• M7: 1,025,942 km (0.083 R)
• M8: 1,410,858 km (0.106 R)
• M9: 2,230,803 km (0.119 R)
• M10: 3,115,226 km (0.102 R)
• M11: 3,423,098 km (0.117 R)
• M12: 6,503,169 km (0.084 R)
• M13: 6,808,947 km (0.113 R)
• M14: 8,216,364 km (0.059 R)
• M15: 8,848,265 km (0.115 R)
• M16: 10,726,018 km (0.099 R)
• M17: 12,972,529 km (0.098 R)
• M18: 16,616,733 km (0.103 R)
• M19: 17,187,299 km (0.108 R)
• M20: 18,747,306 km (0.096 R)
• M21: 20,480,248 km (0.119 R)
• M22: 21,721,012 km (0.049 R)
• M23: 22,662,282 km (0.062 R)
• M24: 23,541,170 km (0.107 R)
• M25: 24,442,497 km (0.059 R)
• M26: 31,190,109 km (0.052 R)
• M27: 33,726,391 km (0.112 R)
• M28: 35,569,587 km (0.109 R)
• M29: 41,240,692 km (0.072 R)
• M30: 45,384,404 km (0.086 R)
• M31: 47,201,569 km (0.093 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 375 - 16,627 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit