🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.43 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.84

Radius: 1.28

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.8 AU - 0.92 AU

Year: 302 Days

Day: 25.9 Hours

Environment

Temp: 35 °C

Axial Tilt: 89.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.05

Radius: 1.02

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.91 AU - 1.15 AU

Year: 396 Days

Day: 19 Hours

Environment

Temp: 24 °C

Axial Tilt: 33.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.93 AU - 1.13 AU

Year: 396 Days

Day: 45.4 Hours

Environment

Temp: -3 °C

Axial Tilt: 12 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 20,536,837 km

• M1: 40,541 km (0.114 R)
• M2: 191,635 km (0.03 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.15

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.7 AU - 1.88 AU

Year: 907 Days

Day: 38.3 Hours

Environment

Temp: -68 °C

Axial Tilt: 26.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.88

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.48 AU - 2.4 AU

Year: 1023 Days

Day: 47.1 Hours

Environment

Temp: -80 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.84

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 2.69 AU - 3.71 AU

Year: 2168 Days

Day: 43.2 Hours

Environment

Temp: -109 °C

Axial Tilt: 15.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.58

Radius: 0.8

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 2.9 AU - 3.86 AU

Year: 2354 Days

Day: 34 Hours

Environment

Temp: -125 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 9.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 349

Radius: 12.5

Gravity: 2.23 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 8.94 AU - 10 AU

Year: 11038 Days

Day: 9.3 Hours

Environment

Temp: -179 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 20,536,837 km

• M1: 156,479 km (0.06 R)
• M2: 625,618 km (0.042 R)
• M3: 1,222,514 km (0.066 R)
• M4: 2,168,870 km (0.048 R)
• M5: 2,684,833 km (0.033 R)
• M6: 3,439,405 km (0.052 R)
• M7: 3,941,904 km (0.071 R)
• M8: 6,640,799 km (0.068 R)
• M9: 7,156,463 km (0.114 R)
• M10: 9,538,061 km (0.098 R)
• M11: 10,486,661 km (0.06 R)
• M12: 11,238,690 km (0.085 R)
• M13: 14,066,837 km (0.081 R)
• M14: 15,422,194 km (0.036 R)
• M15: 16,594,443 km (0.094 R)
• M16: 18,969,309 km (0.062 R)
• M17: 20,161,903 km (0.118 R)
• M18: 22,696,241 km (0.077 R)
• M19: 26,518,018 km (0.047 R)
• M20: 31,154,804 km (0.064 R)
• M21: 35,078,457 km (0.063 R)
• M22: 36,872,734 km (0.052 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35.6

Radius: 14.1

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 8.27 AU - 12.09 AU

Year: 12302 Days

Day: 12.9 Hours

Environment

Temp: -183 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 20,536,837 km

• M1: 178,321 km (0.114 R)
• M2: 719,566 km (0.116 R)
• M3: 2,289,296 km (0.116 R)
• M4: 3,946,093 km (0.094 R)
• M5: 5,075,108 km (0.12 R)
• M6: 6,521,270 km (0.055 R)
• M7: 8,359,529 km (0.103 R)
• M8: 9,326,978 km (0.116 R)
• M9: 9,912,505 km (0.086 R)
• M10: 11,197,849 km (0.076 R)
• M11: 16,082,369 km (0.045 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: 514 - 13,001 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit