🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.52 AU - 0.66 AU

Year: 170 Days

Day: 12.7 Hours

Environment

Temp: 144 °C

Axial Tilt: 32.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 81,898,164 km

• M1: 125,363 km (0.097 R)
• M2: 391,946 km (0.057 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3

Radius: 1.55

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.72 AU - 1.08 AU

Year: 320 Days

Day: 30.3 Hours

Environment

Temp: 42 °C

Axial Tilt: 14.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.01

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.99 AU - 1.09 AU

Year: 397 Days

Day: 38.4 Hours

Environment

Temp: 21 °C

Axial Tilt: 0.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.17 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.09

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.96 AU - 1.38 AU

Year: 474 Days

Day: 18.2 Hours

Environment

Temp: -13 °C

Axial Tilt: 29.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.39 AU - 1.69 AU

Year: 716 Days

Day: 19.1 Hours

Environment

Temp: -57 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,898,164 km

• M1: 558,000 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 98.3

Radius: 10.9

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 5.95 AU - 8.99 AU

Year: 7651 Days

Day: 10.3 Hours

Environment

Temp: -163 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 81,898,164 km

• M1: 135,835 km (0.081 R)
• M2: 750,832 km (0.096 R)
• M3: 1,183,469 km (0.047 R)
• M4: 1,888,075 km (0.086 R)
• M5: 2,515,039 km (0.11 R)
• M6: 2,918,505 km (0.115 R)
• M7: 3,759,245 km (0.118 R)
• M8: 4,142,215 km (0.039 R)
• M9: 6,023,409 km (0.034 R)
• M10: 6,549,993 km (0.111 R)
• M11: 8,518,851 km (0.095 R)
• M12: 9,111,707 km (0.09 R)
• M13: 9,731,790 km (0.094 R)
• M14: 11,677,460 km (0.062 R)
• M15: 12,104,413 km (0.089 R)
• M16: 12,674,829 km (0.118 R)
• M17: 13,822,544 km (0.118 R)
• M18: 15,188,672 km (0.083 R)
• M19: 16,376,479 km (0.064 R)
• M20: 20,619,224 km (0.102 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 547.2

Radius: 14.9

Gravity: 2.46 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 8.14 AU - 10.06 AU

Year: 10287 Days

Day: 13.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 81,898,164 km

• M1: 185,352 km (0.061 R)
• M2: 672,442 km (0.116 R)
• M3: 1,230,143 km (0.059 R)
• M4: 2,204,624 km (0.115 R)
• M5: 2,781,174 km (0.047 R)
• M6: 3,699,406 km (0.097 R)
• M7: 4,353,448 km (0.026 R)
• M8: 5,084,084 km (0.057 R)
• M9: 5,861,394 km (0.11 R)
• M10: 6,568,543 km (0.037 R)
• M11: 7,943,497 km (0.108 R)
• M12: 10,131,217 km (0.097 R)
• M13: 12,523,885 km (0.067 R)
• M14: 14,377,851 km (0.1 R)
• M15: 15,142,596 km (0.065 R)
• M16: 17,385,965 km (0.038 R)
• M17: 18,924,430 km (0.074 R)
• M18: 21,114,692 km (0.116 R)
• M19: 21,936,433 km (0.097 R)
• M20: 24,172,922 km (0.074 R)
• M21: 28,496,300 km (0.05 R)
• M22: 34,990,194 km (0.093 R)
• M23: 36,025,112 km (0.114 R)
• M24: 37,915,281 km (0.064 R)
• M25: 38,884,675 km (0.054 R)
• M26: 40,999,540 km (0.101 R)
• M27: 43,321,449 km (0.062 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 747.5

Radius: 6

Gravity: 20.76 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 11.4 AU - 18.24 AU

Year: 21380 Days

Day: 17.4 Hours

Environment

Temp: -197 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 81,898,164 km

• M1: 83,176 km (0.083 R)
• M2: 318,943 km (0.032 R)
• M3: 505,641 km (0.078 R)
• M4: 865,274 km (0.103 R)
• M5: 3,797,542 km (0.075 R)
• M6: 4,780,550 km (0.05 R)
• M7: 5,510,138 km (0.106 R)
• M8: 6,809,695 km (0.09 R)
• M9: 7,680,953 km (0.11 R)
• M10: 9,237,220 km (0.096 R)
• M11: 9,878,995 km (0.076 R)
• M12: 12,958,916 km (0.116 R)
• M13: 14,676,299 km (0.114 R)
• M14: 17,660,328 km (0.095 R)
• M15: 23,385,289 km (0.103 R)
• M16: 29,113,391 km (0.044 R)
• M17: 42,441,365 km (0.082 R)
• M18: 52,482,972 km (0.107 R)
• M19: 64,206,060 km (0.076 R)
• M20: 65,677,953 km (0.103 R)
• M21: 69,345,644 km (0.095 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 527 - 10,654 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit