🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.53

Radius: 1.66

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.45 AU - 0.61 AU

Year: 253 Days

Day: 15.8 Hours

Environment

Temp: -118 °C

Axial Tilt: 31.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.57 AU - 0.59 AU

Year: 290 Days

Day: 18.9 Hours

Environment

Temp: -117 °C

Axial Tilt: 17.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,917,319 km

• M1: 49,367 km (0.109 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.66

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.45 AU - 0.73 AU

Year: 297 Days

Day: 27.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 33.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 96.4

Radius: 11

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.84 AU - 1.24 AU

Year: 696 Days

Day: 8.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 43,917,319 km

• M1: 136,732 km (0.096 R)
• M2: 602,431 km (0.088 R)
• M3: 1,022,651 km (0.099 R)
• M4: 1,375,253 km (0.068 R)
• M5: 1,737,430 km (0.118 R)
• M6: 2,095,866 km (0.099 R)
• M7: 2,555,580 km (0.044 R)
• M8: 3,201,843 km (0.112 R)
• M9: 4,144,609 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 408.4

Radius: 14.6

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.94 AU - 1.27 AU

Year: 757 Days

Day: 13.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 43,917,319 km

• M1: 181,612 km (0.055 R)
• M2: 648,956 km (0.062 R)
• M3: 1,142,778 km (0.051 R)
• M4: 1,883,138 km (0.12 R)
• M5: 3,457,057 km (0.095 R)
• M6: 4,307,671 km (0.089 R)
• M7: 4,960,516 km (0.04 R)
• M8: 6,063,501 km (0.039 R)
• M9: 6,643,492 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 176.6

Radius: 13.9

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 2.57 AU - 3.61 AU

Year: 3563 Days

Day: 11.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,917,319 km

• M1: 174,132 km (0.077 R)
• M2: 747,989 km (0.094 R)
• M3: 1,312,123 km (0.098 R)
• M4: 2,022,713 km (0.104 R)
• M5: 5,218,423 km (0.101 R)
• M6: 7,013,447 km (0.109 R)
• M7: 7,819,032 km (0.088 R)
• M8: 8,716,619 km (0.086 R)
• M9: 9,222,709 km (0.079 R)
• M10: 12,055,195 km (0.119 R)
• M11: 12,604,668 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 569.2

Radius: 13.7

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 2.86 AU - 3.56 AU

Year: 3773 Days

Day: 6.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 43,917,319 km

• M1: 170,392 km (0.029 R)
• M2: 1,009,786 km (0.099 R)
• M3: 1,513,781 km (0.11 R)
• M4: 2,027,500 km (0.082 R)
• M5: 2,901,750 km (0.091 R)
• M6: 3,398,265 km (0.092 R)
• M7: 3,993,366 km (0.049 R)
• M8: 4,727,891 km (0.097 R)
• M9: 7,164,392 km (0.116 R)
• M10: 9,220,016 km (0.091 R)
• M11: 10,024,853 km (0.037 R)
• M12: 11,170,174 km (0.084 R)
• M13: 13,916,492 km (0.093 R)
• M14: 16,142,957 km (0.111 R)
• M15: 18,064,541 km (0.089 R)
• M16: 20,197,508 km (0.12 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 813.1

Radius: 12.9

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 5.2 AU - 5.44 AU

Year: 8050 Days

Day: 10.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 43,917,319 km

• M1: 160,668 km (0.115 R)
• M2: 565,630 km (0.055 R)
• M3: 1,040,902 km (0.061 R)
• M4: 1,676,394 km (0.075 R)
• M5: 2,185,026 km (0.117 R)
• M6: 2,776,088 km (0.074 R)
• M7: 4,016,404 km (0.117 R)
• M8: 4,969,342 km (0.116 R)
• M9: 6,936,404 km (0.038 R)
• M10: 7,968,929 km (0.05 R)
• M11: 9,377,543 km (0.111 R)
• M12: 9,995,083 km (0.035 R)
• M13: 10,740,978 km (0.101 R)
• M14: 11,258,736 km (0.079 R)
• M15: 12,683,207 km (0.09 R)
• M16: 13,379,884 km (0.088 R)
• M17: 13,919,035 km (0.088 R)
• M18: 15,492,954 km (0.118 R)
• M19: 16,087,755 km (0.078 R)
• M20: 20,214,861 km (0.076 R)
• M21: 24,374,879 km (0.084 R)
• M22: 24,820,082 km (0.101 R)
• M23: 28,974,415 km (0.117 R)
• M24: 33,680,913 km (0.075 R)
• M25: 34,122,377 km (0.044 R)
• M26: 36,620,362 km (0.118 R)
• M27: 38,752,880 km (0.114 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: 548 - 14,415 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit