🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.21

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.69 AU - 0.79 AU

Year: 242 Days

Day: 21.2 Hours

Environment

Temp: 165 °C

Axial Tilt: 43.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.87 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.37

Radius: 0.67

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.83 AU - 0.91 AU

Year: 309 Days

Day: 41.8 Hours

Environment

Temp: 20 °C

Axial Tilt: 36 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 77,569,080 km

• M1: 30,069 km (0.108 R)
• M2: 106,065 km (0.092 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.24

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.93 AU - 1.23 AU

Year: 427 Days

Day: 26.5 Hours

Environment

Temp: 15 °C

Axial Tilt: 5.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 77,569,080 km

• M1: 74,799 km (0.03 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.46

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.03 AU - 1.71 AU

Year: 611 Days

Day: 12.6 Hours

Environment

Temp: -35 °C

Axial Tilt: 21.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.41

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 1.12 AU - 1.7 AU

Year: 638 Days

Day: 18 Hours

Environment

Temp: -40 °C

Axial Tilt: 46.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.61

Radius: 1.21

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.32 AU - 1.84 AU

Year: 756 Days

Day: 27.9 Hours

Environment

Temp: -47 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 5.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.8

Radius: 13.9

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 4.91 AU - 5.41 AU

Year: 4463 Days

Day: 5.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 77,569,080 km

• M1: 176,077 km (0.063 R)
• M2: 930,499 km (0.096 R)
• M3: 1,417,440 km (0.096 R)
• M4: 1,968,708 km (0.045 R)
• M5: 2,692,313 km (0.052 R)
• M6: 3,515,400 km (0.103 R)
• M7: 4,066,220 km (0.095 R)
• M8: 4,543,736 km (0.105 R)
• M9: 7,341,067 km (0.092 R)
• M10: 8,085,316 km (0.102 R)
• M11: 9,616,151 km (0.087 R)
• M12: 15,217,544 km (0.079 R)
• M13: 19,503,523 km (0.036 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 799.4

Radius: 5.3

Gravity: 28.46 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 12.64 AU - 14.52 AU

Year: 19057 Days

Day: 15.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 77,569,080 km

• M1: 67,319 km (0.117 R)
• M2: 338,091 km (0.081 R)
• M3: 1,491,940 km (0.074 R)
• M4: 1,860,100 km (0.057 R)
• M5: 5,407,514 km (0.055 R)
• M6: 7,366,498 km (0.059 R)
• M7: 10,838,216 km (0.12 R)
• M8: 11,089,690 km (0.095 R)
• M9: 12,543,033 km (0.1 R)
• M10: 16,974,571 km (0.111 R)
• M11: 18,093,862 km (0.103 R)
• M12: 19,078,516 km (0.041 R)
• M13: 24,328,055 km (0.084 R)
• M14: 31,855,520 km (0.118 R)
• M15: 32,371,782 km (0.091 R)
• M16: 33,686,598 km (0.118 R)
• M17: 33,953,780 km (0.077 R)
• M18: 44,221,280 km (0.078 R)
• M19: 59,049,571 km (0.051 R)
• M20: 61,406,036 km (0.096 R)
• M21: 67,358,087 km (0.118 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 287 - 11,473 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit