🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.57 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.87 AU - 1.39 AU

Year: 450 Days

Day: 46.7 Hours

Environment

Temp: 6 °C

Axial Tilt: 24.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.95 AU - 1.53 AU

Year: 517 Days

Day: 23.2 Hours

Environment

Temp: 6 °C

Axial Tilt: 18.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1

Radius: 1

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 2.02 AU - 2.48 AU

Year: 1265 Days

Day: 34.3 Hours

Environment

Temp: -90 °C

Axial Tilt: 26.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.06

Radius: 1.02

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 2.04 AU - 2.62 AU

Year: 1333 Days

Day: 42.1 Hours

Environment

Temp: -89 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.95

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 2.19 AU - 3.35 AU

Year: 1728 Days

Day: 43.5 Hours

Environment

Temp: -93 °C

Axial Tilt: 22.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.93

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 2.86 AU - 4.72 AU

Year: 2765 Days

Day: 36.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 1.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.76

Radius: 0.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 3.69 AU - 4.33 AU

Year: 3009 Days

Day: 42.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 9.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 251.8

Radius: 14.4

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.69 AU - 5.49 AU

Year: 3685 Days

Day: 8.9 Hours

Environment

Temp: -146 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 76,593,012 km

• M1: 179,069 km (0.098 R)
• M2: 762,351 km (0.056 R)
• M3: 1,239,418 km (0.106 R)
• M4: 1,718,580 km (0.071 R)
• M5: 2,389,078 km (0.059 R)
• M6: 2,914,765 km (0.063 R)
• M7: 3,803,675 km (0.083 R)
• M8: 4,282,538 km (0.089 R)
• M9: 5,021,253 km (0.118 R)
• M10: 5,720,772 km (0.081 R)
• M11: 6,484,768 km (0.064 R)
• M12: 6,947,325 km (0.093 R)
• M13: 8,248,228 km (0.098 R)
• M14: 9,429,004 km (0.105 R)
• M15: 9,988,650 km (0.116 R)
• M16: 11,175,111 km (0.09 R)
• M17: 12,084,366 km (0.114 R)
• M18: 13,042,391 km (0.101 R)
• M19: 14,231,096 km (0.107 R)
• M20: 15,442,988 km (0.107 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 319.9

Radius: 6.6

Gravity: 7.34 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 10.34 AU - 16.2 AU

Year: 18115 Days

Day: 22 Hours

Environment

Temp: -195 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 76,593,012 km

• M1: 82,578 km (0.052 R)
• M2: 362,924 km (0.079 R)
• M3: 1,144,274 km (0.073 R)
• M4: 2,922,694 km (0.099 R)
• M5: 8,390,496 km (0.085 R)
• M6: 8,771,073 km (0.115 R)
• M7: 9,515,472 km (0.103 R)
• M8: 12,484,242 km (0.104 R)
• M9: 16,018,491 km (0.112 R)
• M10: 21,903,073 km (0.061 R)
• M11: 25,372,098 km (0.117 R)
• M12: 28,440,650 km (0.102 R)
• M13: 29,407,201 km (0.106 R)
• M14: 37,686,097 km (0.111 R)
• M15: 42,077,094 km (0.044 R)
• M16: 46,945,607 km (0.09 R)
• M17: 49,977,956 km (0.055 R)
• M18: 54,603,073 km (0.051 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 296.2

Radius: 7.5

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 16.17 AU - 21.57 AU

Year: 30718 Days

Day: 16.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 76,593,012 km

• M1: 95,294 km (0.079 R)
• M2: 733,179 km (0.088 R)
• M3: 1,177,485 km (0.054 R)
• M4: 1,582,297 km (0.08 R)
• M5: 2,285,257 km (0.097 R)
• M6: 3,261,982 km (0.117 R)
• M7: 3,632,835 km (0.067 R)
• M8: 4,879,883 km (0.105 R)
• M9: 5,600,645 km (0.068 R)
• M10: 6,091,027 km (0.085 R)
• M11: 6,654,412 km (0.111 R)
• M12: 7,017,935 km (0.085 R)
• M13: 9,371,708 km (0.065 R)
• M14: 9,713,240 km (0.113 R)
• M15: 10,181,481 km (0.096 R)
• M16: 11,546,861 km (0.091 R)
• M17: 13,890,910 km (0.09 R)
• M18: 14,636,656 km (0.098 R)
• M19: 25,774,367 km (0.091 R)
• M20: 27,938,749 km (0.042 R)
• M21: 43,049,031 km (0.06 R)
• M22: 43,993,143 km (0.117 R)
• M23: 50,122,019 km (0.069 R)
• M24: 55,861,640 km (0.12 R)
• M25: 57,931,476 km (0.074 R)
• M26: 69,052,283 km (0.114 R)
• M27: 74,320,821 km (0.111 R)
• M28: 75,678,720 km (0.11 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 348 - 16,957 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit