🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.32

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 0.45 AU - 0.69 AU

Year: 155 Days

Day: 42 Hours

Environment

Temp: 238 °C

Axial Tilt: 6.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 58,068,747 km

• M1: 433,684 km (0.08 R)

Planet 2 - Terrestrial

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 2.07 AU - 2.45 AU

Year: 1223 Days

Day: 42.6 Hours

Environment

Temp: -76 °C

Axial Tilt: 35.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.92

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 2.57 AU - 2.61 AU

Year: 1500 Days

Day: 44.9 Hours

Environment

Temp: -81 °C

Axial Tilt: 49.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 58,068,747 km

• M1: 481,107 km (0.059 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 3.37 AU - 3.83 AU

Year: 2458 Days

Day: 47.3 Hours

Environment

Temp: -112 °C

Axial Tilt: 18.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.41 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.32

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 3.79 AU - 5.03 AU

Year: 3333 Days

Day: 34.4 Hours

Environment

Temp: -125 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 8.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 159.1

Radius: 10.6

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 7.5 AU - 8.88 AU

Year: 8435 Days

Day: 10.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 58,068,747 km

• M1: 131,945 km (0.082 R)
• M2: 540,796 km (0.117 R)
• M3: 1,534,276 km (0.105 R)
• M4: 2,002,517 km (0.115 R)
• M5: 2,500,977 km (0.09 R)
• M6: 3,644,653 km (0.098 R)
• M7: 4,415,381 km (0.049 R)
• M8: 4,752,724 km (0.042 R)
• M9: 12,127,002 km (0.114 R)
• M10: 12,792,413 km (0.112 R)
• M11: 13,381,829 km (0.062 R)
• M12: 17,070,912 km (0.087 R)
• M13: 17,906,865 km (0.108 R)
• M14: 24,240,989 km (0.082 R)
• M15: 25,296,701 km (0.084 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 750.4

Radius: 4.8

Gravity: 32.57 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 10.82 AU - 15.8 AU

Year: 17476 Days

Day: 20.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 58,068,747 km

• M1: 59,839 km (0.065 R)
• M2: 273,615 km (0.105 R)
• M3: 443,558 km (0.038 R)
• M4: 812,017 km (0.119 R)
• M5: 1,062,294 km (0.083 R)
• M6: 1,233,434 km (0.111 R)
• M7: 1,683,275 km (0.104 R)
• M8: 2,319,964 km (0.079 R)
• M9: 2,975,651 km (0.043 R)
• M10: 3,183,742 km (0.065 R)
• M11: 3,837,036 km (0.074 R)
• M12: 5,216,478 km (0.117 R)
• M13: 7,882,910 km (0.103 R)
• M14: 9,730,294 km (0.084 R)
• M15: 11,151,923 km (0.078 R)
• M16: 11,338,920 km (0.115 R)
• M17: 11,783,226 km (0.102 R)
• M18: 16,721,601 km (0.067 R)
• M19: 16,966,643 km (0.096 R)
• M20: 17,547,681 km (0.101 R)
• M21: 20,466,485 km (0.11 R)
• M22: 21,124,715 km (0.075 R)
• M23: 24,523,878 km (0.118 R)
• M24: 28,734,460 km (0.097 R)
• M25: 28,968,580 km (0.114 R)
• M26: 33,921,467 km (0.09 R)
• M27: 35,376,306 km (0.114 R)
• M28: 35,915,457 km (0.076 R)
• M29: 39,266,150 km (0.095 R)
• M30: 40,135,314 km (0.115 R)
• M31: 46,099,182 km (0.064 R)
• M32: 46,904,019 km (0.041 R)
• M33: 52,627,185 km (0.098 R)
• M34: 54,574,051 km (0.086 R)
• M35: 56,019,615 km (0.089 R)
• M36: 56,202,125 km (0.091 R)
• M37: 59,365,222 km (0.093 R)
• M38: 67,684,360 km (0.099 R)
• M39: 70,408,537 km (0.057 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 231.3

Radius: 5.5

Gravity: 7.65 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 15.67 AU - 16.25 AU

Year: 22947 Days

Day: 18.1 Hours

Environment

Temp: -184 °C

Axial Tilt: 28 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 58,068,747 km

• M1: 76,145 km (0.1 R)
• M2: 256,411 km (0.084 R)
• M3: 582,833 km (0.111 R)
• M4: 1,064,538 km (0.077 R)
• M5: 1,650,065 km (0.041 R)
• M6: 2,842,659 km (0.093 R)
• M7: 6,245,262 km (0.074 R)
• M8: 8,605,917 km (0.04 R)
• M9: 8,949,992 km (0.095 R)
• M10: 9,201,316 km (0.065 R)
• M11: 15,850,194 km (0.071 R)
• M12: 27,911,372 km (0.073 R)
• M13: 32,400,206 km (0.081 R)
• M14: 36,320,119 km (0.096 R)
• M15: 37,868,008 km (0.076 R)
• M16: 47,782,757 km (0.08 R)
• M17: 51,543,946 km (0.12 R)
• M18: 52,840,212 km (0.116 R)

Kuiper Belt

Range: 30.5 - 53.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 530 - 13,404 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit