🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.11

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.46 AU - 0.58 AU

Year: 242 Days

Day: 44.1 Hours

Environment

Temp: -128 °C

Axial Tilt: 17.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.45 AU - 0.61 AU

Year: 249 Days

Day: 46.9 Hours

Environment

Temp: -129 °C

Axial Tilt: 11.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 53,906,313 km

• M1: 19,897 km (0.112 R)
• M2: 350,508 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.4

Radius: 14.3

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.61 AU - 0.95 AU

Year: 445 Days

Day: 6.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 53,906,313 km

• M1: 178,769 km (0.075 R)
• M2: 640,279 km (0.11 R)
• M3: 1,111,512 km (0.033 R)
• M4: 1,583,194 km (0.069 R)
• M5: 2,660,748 km (0.114 R)
• M6: 3,313,144 km (0.068 R)
• M7: 4,638,581 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.2

Radius: 13.6

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 3.03 AU - 4.13 AU

Year: 4374 Days

Day: 6.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,906,313 km

• M1: 169,195 km (0.114 R)
• M2: 640,728 km (0.115 R)
• M3: 1,073,814 km (0.114 R)
• M4: 1,958,535 km (0.067 R)
• M5: 2,895,616 km (0.039 R)
• M6: 3,755,056 km (0.117 R)
• M7: 5,895,951 km (0.117 R)
• M8: 6,591,731 km (0.043 R)
• M9: 7,941,104 km (0.119 R)
• M10: 9,049,774 km (0.103 R)
• M11: 12,248,774 km (0.077 R)
• M12: 13,628,516 km (0.094 R)
• M13: 14,381,741 km (0.065 R)
• M14: 14,846,841 km (0.104 R)
• M15: 17,441,167 km (0.075 R)
• M16: 18,029,984 km (0.091 R)
• M17: 18,510,493 km (0.067 R)
• M18: 19,497,240 km (0.113 R)
• M19: 20,714,368 km (0.11 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 995

Radius: 5.5

Gravity: 32.89 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 5.75 AU - 6.59 AU

Year: 9896 Days

Day: 23.4 Hours

Environment

Temp: -230 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 53,906,313 km

• M1: 68,366 km (0.09 R)
• M2: 246,537 km (0.109 R)
• M3: 492,626 km (0.063 R)
• M4: 776,114 km (0.081 R)
• M5: 1,200,373 km (0.072 R)
• M6: 1,507,498 km (0.075 R)
• M7: 2,074,324 km (0.04 R)
• M8: 2,356,914 km (0.077 R)
• M9: 3,698,059 km (0.029 R)
• M10: 5,274,671 km (0.111 R)
• M11: 5,516,571 km (0.114 R)
• M12: 5,911,509 km (0.103 R)
• M13: 7,594,785 km (0.088 R)
• M14: 8,735,768 km (0.042 R)
• M15: 10,902,244 km (0.081 R)
• M16: 12,409,143 km (0.079 R)
• M17: 14,115,606 km (0.116 R)
• M18: 14,448,013 km (0.037 R)
• M19: 14,649,820 km (0.082 R)
• M20: 16,773,661 km (0.115 R)
• M21: 21,620,483 km (0.08 R)
• M22: 23,146,680 km (0.1 R)
• M23: 33,482,995 km (0.095 R)
• M24: 33,836,794 km (0.057 R)
• M25: 36,757,394 km (0.067 R)
• M26: 42,816,855 km (0.11 R)
• M27: 45,358,523 km (0.054 R)
• M28: 46,519,851 km (0.088 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 18,147 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit