🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.72

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.5 AU - 0.52 AU

Year: 239 Days

Day: 28.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 11.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,093,761 km

• M1: 89,310 km (0.074 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.86

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 44.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 4.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,093,761 km

• M1: 248,632 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 749.8

Radius: 10.5

Gravity: 6.8 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.02 AU - 1.06 AU

Year: 696 Days

Day: 6.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,093,761 km

• M1: 130,599 km (0.098 R)
• M2: 664,963 km (0.086 R)
• M3: 1,098,348 km (0.056 R)
• M4: 1,567,486 km (0.096 R)
• M5: 2,043,956 km (0.104 R)
• M6: 2,517,134 km (0.089 R)
• M7: 2,892,026 km (0.105 R)
• M8: 3,532,006 km (0.073 R)
• M9: 4,140,271 km (0.089 R)
• M10: 5,417,687 km (0.112 R)
• M11: 6,288,646 km (0.059 R)
• M12: 7,161,100 km (0.041 R)
• M13: 7,568,755 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 265.6

Radius: 11

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.89 AU - 1.45 AU

Year: 830 Days

Day: 7.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 26.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,093,761 km

• M1: 136,732 km (0.076 R)
• M2: 535,261 km (0.085 R)
• M3: 1,021,454 km (0.077 R)
• M4: 1,461,272 km (0.064 R)
• M5: 1,976,038 km (0.118 R)
• M6: 2,498,284 km (0.104 R)
• M7: 3,111,037 km (0.06 R)
• M8: 4,137,877 km (0.094 R)
• M9: 4,981,908 km (0.091 R)
• M10: 5,565,340 km (0.073 R)
• M11: 6,419,993 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.6

Radius: 8.1

Gravity: 6.76 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 1.18 AU - 1.38 AU

Year: 950 Days

Day: 14.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,093,761 km

• M1: 100,679 km (0.085 R)
• M2: 439,070 km (0.049 R)
• M3: 1,026,840 km (0.098 R)
• M4: 1,314,516 km (0.077 R)
• M5: 1,980,975 km (0.074 R)
• M6: 2,275,384 km (0.073 R)
• M7: 2,940,795 km (0.093 R)
• M8: 3,434,019 km (0.101 R)
• M9: 5,286,041 km (0.077 R)
• M10: 6,197,989 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.7

Radius: 13.7

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.26 AU - 1.82 AU

Year: 1254 Days

Day: 9.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,093,761 km

• M1: 170,542 km (0.095 R)
• M2: 651,349 km (0.075 R)
• M3: 1,145,620 km (0.054 R)
• M4: 1,640,191 km (0.109 R)
• M5: 2,109,330 km (0.112 R)
• M6: 2,767,710 km (0.075 R)
• M7: 3,226,527 km (0.111 R)
• M8: 3,722,593 km (0.089 R)
• M9: 4,194,724 km (0.105 R)
• M10: 5,071,368 km (0.103 R)
• M11: 5,764,604 km (0.072 R)
• M12: 6,912,020 km (0.045 R)
• M13: 7,407,189 km (0.057 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 216

Radius: 11.7

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 2.6 AU - 2.6 AU

Year: 2750 Days

Day: 10.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 44.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,093,761 km

• M1: 145,858 km (0.116 R)
• M2: 532,868 km (0.104 R)
• M3: 1,292,675 km (0.061 R)
• M4: 1,882,839 km (0.058 R)
• M5: 2,492,001 km (0.101 R)
• M6: 2,906,836 km (0.117 R)
• M7: 7,320,422 km (0.035 R)
• M8: 7,783,428 km (0.105 R)
• M9: 9,385,621 km (0.1 R)
• M10: 9,802,251 km (0.079 R)
• M11: 10,569,538 km (0.112 R)
• M12: 12,110,995 km (0.079 R)
• M13: 13,634,350 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 211.3

Radius: 5.4

Gravity: 7.25 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 7.51 AU - 9.61 AU

Year: 16429 Days

Day: 21.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 45,093,761 km

• M1: 67,169 km (0.1 R)
• M2: 284,535 km (0.114 R)
• M3: 705,354 km (0.077 R)
• M4: 1,165,367 km (0.087 R)
• M5: 2,081,654 km (0.061 R)
• M6: 3,355,630 km (0.1 R)
• M7: 3,876,679 km (0.096 R)
• M8: 6,145,929 km (0.107 R)
• M9: 6,361,799 km (0.091 R)
• M10: 7,196,705 km (0.063 R)
• M11: 7,396,268 km (0.103 R)
• M12: 8,897,932 km (0.117 R)
• M13: 10,798,274 km (0.084 R)
• M14: 13,609,517 km (0.116 R)
• M15: 17,084,226 km (0.092 R)
• M16: 17,655,391 km (0.081 R)
• M17: 20,383,907 km (0.081 R)
• M18: 28,606,853 km (0.07 R)
• M19: 32,455,856 km (0.061 R)
• M20: 36,871,986 km (0.112 R)
• M21: 37,227,281 km (0.12 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 198 - 19,842 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit