🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.18

Radius: 0.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.58 AU - 0.62 AU

Year: 300 Days

Day: 18.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 17,268,958 km

• M1: 35,754 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.5

Radius: 10.7

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.62 AU - 0.94 AU

Year: 445 Days

Day: 6.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 17,268,958 km

• M1: 133,142 km (0.116 R)
• M2: 580,889 km (0.117 R)
• M3: 927,507 km (0.114 R)
• M4: 1,381,536 km (0.096 R)
• M5: 1,968,558 km (0.12 R)
• M6: 2,397,755 km (0.117 R)
• M7: 2,933,913 km (0.088 R)
• M8: 3,487,575 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.5

Radius: 14.2

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.8 AU - 0.96 AU

Year: 533 Days

Day: 6.6 Hours

Environment

Temp: -153 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 17,268,958 km

• M1: 176,525 km (0.11 R)
• M2: 723,754 km (0.059 R)
• M3: 1,229,096 km (0.107 R)
• M4: 1,976,786 km (0.055 R)
• M5: 2,485,868 km (0.051 R)
• M6: 2,947,228 km (0.074 R)
• M7: 3,631,040 km (0.056 R)
• M8: 4,433,782 km (0.077 R)
• M9: 5,005,844 km (0.117 R)
• M10: 5,929,461 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 78.9

Radius: 10

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.77 AU - 1.04 AU

Year: 551 Days

Day: 7.7 Hours

Environment

Temp: -146 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 17,268,958 km

• M1: 158,125 km (0.115 R)
• M2: 488,736 km (0.075 R)
• M3: 1,076,955 km (0.089 R)
• M4: 1,885,831 km (0.115 R)
• M5: 2,387,432 km (0.095 R)
• M6: 3,021,129 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 910.9

Radius: 12.3

Gravity: 6.02 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.38 AU - 1.4 AU

Year: 1058 Days

Day: 11.9 Hours

Environment

Temp: -181 °C

Axial Tilt: 118.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 17,268,958 km

• M1: 153,039 km (0.049 R)
• M2: 718,967 km (0.049 R)
• M3: 1,556,117 km (0.074 R)
• M4: 2,164,232 km (0.087 R)
• M5: 3,063,316 km (0.113 R)
• M6: 3,812,651 km (0.118 R)
• M7: 4,443,057 km (0.058 R)
• M8: 5,978,978 km (0.062 R)
• M9: 6,688,371 km (0.056 R)
• M10: 7,200,295 km (0.078 R)
• M11: 10,973,901 km (0.086 R)
• M12: 11,687,483 km (0.1 R)

Asteroid Belt

Center: 1.67 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 558.3

Radius: 9.8

Gravity: 5.81 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.61 AU - 2.29 AU

Year: 1758 Days

Day: 14.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 17,268,958 km

• M1: 122,221 km (0.084 R)
• M2: 447,746 km (0.104 R)
• M3: 755,619 km (0.062 R)
• M4: 1,061,098 km (0.106 R)
• M5: 1,408,314 km (0.048 R)
• M6: 2,291,091 km (0.107 R)
• M7: 3,161,003 km (0.066 R)
• M8: 3,982,894 km (0.094 R)
• M9: 6,656,507 km (0.031 R)
• M10: 7,094,829 km (0.109 R)
• M11: 7,662,852 km (0.078 R)
• M12: 8,556,549 km (0.05 R)
• M13: 8,982,155 km (0.104 R)
• M14: 9,942,125 km (0.101 R)
• M15: 11,111,232 km (0.093 R)
• M16: 11,952,421 km (0.057 R)
• M17: 12,874,842 km (0.106 R)
• M18: 13,638,239 km (0.079 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 806.4

Radius: 12.2

Gravity: 5.42 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 1.6 AU - 2.64 AU

Year: 1993 Days

Day: 8.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 17,268,958 km

• M1: 152,291 km (0.032 R)
• M2: 783,743 km (0.116 R)
• M3: 1,230,891 km (0.118 R)
• M4: 2,068,490 km (0.117 R)
• M5: 2,586,398 km (0.082 R)
• M6: 3,125,698 km (0.106 R)
• M7: 3,942,203 km (0.058 R)
• M8: 4,638,880 km (0.087 R)
• M9: 5,208,250 km (0.089 R)
• M10: 6,728,912 km (0.115 R)
• M11: 7,201,193 km (0.084 R)
• M12: 8,817,448 km (0.069 R)
• M13: 11,039,276 km (0.066 R)
• M14: 11,816,586 km (0.037 R)
• M15: 12,300,386 km (0.118 R)
• M16: 14,505,608 km (0.117 R)
• M17: 15,533,794 km (0.039 R)
• M18: 16,861,475 km (0.108 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: 470 - 15,183 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit