🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.27

Radius: 1.1

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.6 AU - 0.72 AU

Year: 203 Days

Day: 36.9 Hours

Environment

Temp: 173 °C

Axial Tilt: 32.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.95 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.82

Radius: 0.92

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.91 AU - 0.99 AU

Year: 351 Days

Day: 31.6 Hours

Environment

Temp: 27 °C

Axial Tilt: 29.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.92

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 1.15 AU - 1.67 AU

Year: 634 Days

Day: 41.8 Hours

Environment

Temp: -38 °C

Axial Tilt: 20.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.66

Radius: 1.48

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 2.69 AU - 3.11 AU

Year: 1870 Days

Day: 29.5 Hours

Environment

Temp: -100 °C

Axial Tilt: 22.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 2.9 AU - 3.26 AU

Year: 2047 Days

Day: 32.1 Hours

Environment

Temp: -122 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 69,710,203 km

• M1: 1,789,041 km (0.064 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526.2

Radius: 14.1

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 8.88 AU - 9.3 AU

Year: 10380 Days

Day: 5.4 Hours

Environment

Temp: -182 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 69,710,203 km

• M1: 175,329 km (0.079 R)
• M2: 749,785 km (0.082 R)
• M3: 1,202,168 km (0.114 R)
• M4: 2,520,425 km (0.041 R)
• M5: 3,219,945 km (0.081 R)
• M6: 4,260,398 km (0.034 R)
• M7: 4,741,056 km (0.113 R)
• M8: 5,195,235 km (0.068 R)
• M9: 6,262,915 km (0.096 R)
• M10: 8,090,253 km (0.104 R)
• M11: 11,599,520 km (0.083 R)
• M12: 13,418,031 km (0.084 R)
• M13: 15,485,773 km (0.096 R)
• M14: 22,955,793 km (0.073 R)
• M15: 30,001,554 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 160.1

Radius: 11.3

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 8.11 AU - 10.27 AU

Year: 10552 Days

Day: 5.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 46.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 69,710,203 km

• M1: 140,472 km (0.082 R)
• M2: 720,314 km (0.118 R)
• M3: 1,110,914 km (0.119 R)
• M4: 1,646,325 km (0.118 R)
• M5: 2,879,460 km (0.086 R)
• M6: 3,790,511 km (0.1 R)
• M7: 4,523,241 km (0.091 R)
• M8: 6,786,208 km (0.098 R)
• M9: 8,276,502 km (0.1 R)
• M10: 10,103,990 km (0.113 R)
• M11: 12,039,337 km (0.083 R)
• M12: 13,407,111 km (0.101 R)
• M13: 14,875,863 km (0.084 R)
• M14: 17,307,277 km (0.099 R)
• M15: 19,112,923 km (0.101 R)
• M16: 20,407,693 km (0.051 R)
• M17: 20,899,122 km (0.119 R)
• M18: 21,687,353 km (0.113 R)
• M19: 22,869,026 km (0.093 R)
• M20: 24,405,995 km (0.066 R)
• M21: 27,090,828 km (0.107 R)
• M22: 28,460,845 km (0.046 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 838.3

Radius: 4.9

Gravity: 34.91 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 9.58 AU - 15.43 AU

Year: 16738 Days

Day: 18.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 69,710,203 km

• M1: 61,934 km (0.078 R)
• M2: 468,241 km (0.06 R)
• M3: 894,595 km (0.108 R)
• M4: 1,230,442 km (0.094 R)
• M5: 1,389,764 km (0.05 R)
• M6: 1,680,433 km (0.113 R)
• M7: 1,858,903 km (0.034 R)
• M8: 2,609,286 km (0.119 R)
• M9: 2,849,540 km (0.05 R)
• M10: 3,157,263 km (0.114 R)
• M11: 3,719,003 km (0.119 R)
• M12: 4,086,565 km (0.065 R)
• M13: 4,377,832 km (0.107 R)
• M14: 4,929,848 km (0.06 R)
• M15: 5,260,011 km (0.07 R)
• M16: 7,369,042 km (0.116 R)
• M17: 8,505,387 km (0.09 R)
• M18: 9,528,487 km (0.104 R)
• M19: 11,432,718 km (0.045 R)
• M20: 12,340,328 km (0.077 R)
• M21: 13,155,637 km (0.113 R)
• M22: 14,006,250 km (0.066 R)
• M23: 14,593,422 km (0.104 R)
• M24: 15,974,061 km (0.086 R)
• M25: 17,023,938 km (0.118 R)
• M26: 18,727,559 km (0.062 R)
• M27: 19,170,518 km (0.119 R)
• M28: 20,262,284 km (0.046 R)
• M29: 21,203,105 km (0.093 R)
• M30: 31,888,282 km (0.043 R)
• M31: 39,588,982 km (0.111 R)
• M32: 40,318,272 km (0.053 R)
• M33: 41,354,237 km (0.09 R)
• M34: 43,325,189 km (0.112 R)
• M35: 45,199,201 km (0.103 R)
• M36: 46,639,679 km (0.105 R)
• M37: 52,357,759 km (0.116 R)
• M38: 55,747,946 km (0.118 R)
• M39: 69,077,714 km (0.056 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 263.1

Radius: 7.5

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 17.19 AU - 18.29 AU

Year: 28300 Days

Day: 18.6 Hours

Environment

Temp: -191 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 69,710,203 km

• M1: 93,947 km (0.038 R)
• M2: 406,009 km (0.071 R)
• M3: 684,261 km (0.115 R)
• M4: 1,220,719 km (0.065 R)
• M5: 1,654,552 km (0.111 R)
• M6: 2,439,193 km (0.081 R)
• M7: 2,710,564 km (0.11 R)
• M8: 3,181,648 km (0.038 R)
• M9: 5,141,380 km (0.119 R)
• M10: 6,394,860 km (0.114 R)
• M11: 8,743,248 km (0.1 R)
• M12: 20,658,718 km (0.077 R)
• M13: 24,383,555 km (0.094 R)
• M14: 27,848,691 km (0.112 R)
• M15: 32,624,453 km (0.097 R)
• M16: 37,227,729 km (0.048 R)
• M17: 38,618,391 km (0.092 R)
• M18: 40,477,593 km (0.069 R)
• M19: 51,353,209 km (0.114 R)
• M20: 59,217,420 km (0.07 R)
• M21: 59,781,104 km (0.095 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 487 - 11,327 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit