🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.62 AU - 0.8 AU

Year: 225 Days

Day: 20.8 Hours

Environment

Temp: 112 °C

Axial Tilt: 12 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 52,756,524 km

• M1: 20,794 km (0.104 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.87 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.81

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.82 AU - 0.92 AU

Year: 306 Days

Day: 21.5 Hours

Environment

Temp: 33 °C

Axial Tilt: 38 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 1.54 AU - 1.74 AU

Year: 791 Days

Day: 17.5 Hours

Environment

Temp: -64 °C

Axial Tilt: 43 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,756,524 km

• M1: 336,446 km (0.09 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.79

Radius: 1.26

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.92 AU - 1.98 AU

Year: 1026 Days

Day: 36.6 Hours

Environment

Temp: -82 °C

Axial Tilt: 57.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.97

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 1.92 AU - 2.1 AU

Year: 1074 Days

Day: 23 Hours

Environment

Temp: -78 °C

Axial Tilt: 12.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 52,756,524 km

• M1: 59,241 km (0.054 R)
• M2: 1,308,832 km (0.089 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.74

Radius: 0.89

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 2.56 AU - 2.58 AU

Year: 1552 Days

Day: 39.8 Hours

Environment

Temp: -108 °C

Axial Tilt: 45.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,756,524 km

• M1: 42,037 km (0.072 R)

Asteroid Belt

Center: 4.56 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 6.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 76.9

Radius: 9

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 6.46 AU - 6.64 AU

Year: 6315 Days

Day: 6.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,756,524 km

• M1: 202,556 km (0.026 R)
• M2: 1,320,500 km (0.116 R)
• M3: 1,601,894 km (0.112 R)
• M4: 1,993,541 km (0.117 R)
• M5: 2,354,820 km (0.113 R)
• M6: 7,188,327 km (0.106 R)
• M7: 13,064,831 km (0.092 R)
• M8: 13,844,385 km (0.117 R)
• M9: 14,426,471 km (0.117 R)
• M10: 16,320,230 km (0.077 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 308.3

Radius: 7.4

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 12.04 AU - 13.52 AU

Year: 17212 Days

Day: 16 Hours

Environment

Temp: -187 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 52,756,524 km

• M1: 93,199 km (0.117 R)
• M2: 600,935 km (0.11 R)
• M3: 1,094,458 km (0.06 R)
• M4: 1,485,656 km (0.107 R)
• M5: 2,180,239 km (0.036 R)
• M6: 2,428,273 km (0.102 R)
• M7: 3,192,119 km (0.092 R)
• M8: 3,938,314 km (0.111 R)
• M9: 4,764,243 km (0.067 R)
• M10: 5,629,966 km (0.098 R)
• M11: 6,518,428 km (0.104 R)
• M12: 7,078,074 km (0.094 R)
• M13: 11,987,128 km (0.028 R)
• M14: 16,433,176 km (0.064 R)
• M15: 20,327,807 km (0.116 R)
• M16: 21,519,654 km (0.105 R)
• M17: 26,955,292 km (0.088 R)
• M18: 29,129,548 km (0.113 R)
• M19: 35,252,289 km (0.102 R)
• M20: 41,638,473 km (0.078 R)
• M21: 47,712,894 km (0.081 R)
• M22: 48,157,499 km (0.091 R)
• M23: 49,356,526 km (0.112 R)
• M24: 51,037,707 km (0.089 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: 208 - 18,162 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit