🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.58 AU - 0.6 AU

Year: 293 Days

Day: 34.1 Hours

Environment

Temp: -119 °C

Axial Tilt: 37.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 842.1

Radius: 9.7

Gravity: 8.95 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.68 AU - 0.82 AU

Year: 419 Days

Day: 11.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 19,131,731 km

• M1: 120,576 km (0.083 R)
• M2: 426,055 km (0.104 R)
• M3: 1,010,085 km (0.118 R)
• M4: 1,989,801 km (0.04 R)
• M5: 2,295,879 km (0.043 R)
• M6: 3,049,403 km (0.111 R)
• M7: 3,722,743 km (0.071 R)
• M8: 4,248,131 km (0.092 R)
• M9: 5,314,913 km (0.048 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.2

Radius: 12.3

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.47 AU - 2.31 AU

Year: 1678 Days

Day: 14.6 Hours

Environment

Temp: -181 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 19,131,731 km

• M1: 153,039 km (0.036 R)
• M2: 538,702 km (0.053 R)
• M3: 1,001,707 km (0.098 R)
• M4: 1,479,822 km (0.119 R)
• M5: 1,962,874 km (0.12 R)
• M6: 2,405,235 km (0.061 R)
• M7: 3,080,819 km (0.075 R)
• M8: 3,635,976 km (0.09 R)
• M9: 4,275,058 km (0.083 R)
• M10: 5,067,179 km (0.086 R)
• M11: 7,093,183 km (0.108 R)
• M12: 9,335,805 km (0.034 R)
• M13: 10,405,130 km (0.116 R)
• M14: 11,242,430 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.8

Radius: 13.9

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 3.76 AU - 4.76 AU

Year: 5677 Days

Day: 11.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 19,131,731 km

• M1: 172,935 km (0.071 R)
• M2: 1,099,395 km (0.045 R)
• M3: 1,596,209 km (0.108 R)
• M4: 2,030,193 km (0.114 R)
• M5: 2,561,864 km (0.117 R)
• M6: 3,247,919 km (0.104 R)
• M7: 3,794,550 km (0.099 R)
• M8: 4,402,516 km (0.097 R)
• M9: 4,935,084 km (0.083 R)
• M10: 7,474,358 km (0.072 R)
• M11: 9,517,267 km (0.037 R)
• M12: 11,960,350 km (0.037 R)
• M13: 12,896,084 km (0.113 R)
• M14: 14,913,262 km (0.115 R)
• M15: 18,936,996 km (0.075 R)
• M16: 20,864,415 km (0.078 R)
• M17: 24,036,638 km (0.087 R)
• M18: 25,441,661 km (0.112 R)

Planet 5 - Ice Giant

Semi-Major Axis: 9.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 12.7

Radius: 4.4

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 7.81 AU - 10.93 AU

Year: 18519 Days

Day: 21.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 19,131,731 km

• M1: 55,650 km (0.101 R)
• M2: 990,039 km (0.088 R)
• M3: 1,875,509 km (0.097 R)
• M4: 3,459,152 km (0.064 R)
• M5: 3,873,986 km (0.085 R)
• M6: 10,343,945 km (0.029 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 311 - 12,833 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit