🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.5

Radius: 0.76

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.7 AU - 0.92 AU

Year: 270 Days

Day: 18.6 Hours

Environment

Temp: 81 °C

Axial Tilt: 6.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1 AU - 1.42 AU

Year: 494 Days

Day: 41.6 Hours

Environment

Temp: -6 °C

Axial Tilt: 2.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 89,095,055 km

• M1: 132,993 km (0.105 R)
• M2: 208,539 km (0.064 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.62

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.95 AU - 1.47 AU

Year: 494 Days

Day: 12.7 Hours

Environment

Temp: -17 °C

Axial Tilt: 27.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 89,095,055 km

• M1: 1,031,777 km (0.097 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.15

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.55 AU - 1.73 AU

Year: 779 Days

Day: 35.8 Hours

Environment

Temp: -51 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 3.65 AU - 3.89 AU

Year: 2715 Days

Day: 43.7 Hours

Environment

Temp: -129 °C

Axial Tilt: 36.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Ice Giant

Semi-Major Axis: 16.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 656.8

Radius: 3.4

Gravity: 56.82 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 15.59 AU - 18.31 AU

Year: 25880 Days

Day: 23.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 89,095,055 km

• M1: 42,336 km (0.037 R)
• M2: 224,696 km (0.118 R)
• M3: 367,562 km (0.115 R)
• M4: 662,719 km (0.105 R)
• M5: 1,183,319 km (0.086 R)
• M6: 1,400,535 km (0.101 R)
• M7: 1,518,867 km (0.109 R)
• M8: 1,955,543 km (0.116 R)
• M9: 2,282,265 km (0.044 R)
• M10: 2,544,211 km (0.116 R)
• M11: 3,542,478 km (0.113 R)
• M12: 6,361,350 km (0.096 R)
• M13: 6,830,340 km (0.048 R)
• M14: 8,486,089 km (0.078 R)
• M15: 8,767,034 km (0.103 R)
• M16: 9,170,499 km (0.103 R)
• M17: 9,347,174 km (0.115 R)
• M18: 9,646,669 km (0.104 R)
• M19: 10,014,381 km (0.106 R)
• M20: 10,201,827 km (0.114 R)
• M21: 13,225,349 km (0.057 R)
• M22: 15,849,595 km (0.12 R)
• M23: 17,060,590 km (0.041 R)
• M24: 17,507,588 km (0.11 R)
• M25: 18,612,219 km (0.035 R)
• M26: 20,655,876 km (0.117 R)
• M27: 22,629,221 km (0.082 R)
• M28: 23,716,798 km (0.115 R)
• M29: 27,919,899 km (0.116 R)
• M30: 36,128,634 km (0.117 R)
• M31: 36,865,104 km (0.083 R)
• M32: 37,761,943 km (0.063 R)
• M33: 38,367,815 km (0.032 R)
• M34: 38,520,255 km (0.058 R)
• M35: 39,910,917 km (0.112 R)
• M36: 40,381,851 km (0.034 R)
• M37: 45,980,102 km (0.087 R)
• M38: 52,448,116 km (0.083 R)
• M39: 69,612,976 km (0.043 R)
• M40: 70,067,155 km (0.094 R)
• M41: 88,295,954 km (0.111 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 370 - 19,512 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit