🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.02

Radius: 1.74

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.56 AU - 0.58 AU

Year: 278 Days

Day: 40.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 20.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.21

Radius: 1.08

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.59 AU - 0.63 AU

Year: 308 Days

Day: 19.1 Hours

Environment

Temp: -129 °C

Axial Tilt: 19.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.73

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.53 AU - 0.71 AU

Year: 315 Days

Day: 39.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 42.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 21,242,706 km

• M1: 132,095 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 666.5

Radius: 12.5

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.75 AU - 0.75 AU

Year: 419 Days

Day: 6 Hours

Environment

Temp: -149 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 21,242,706 km

• M1: 155,582 km (0.119 R)
• M2: 551,268 km (0.087 R)
• M3: 1,093,560 km (0.063 R)
• M4: 1,504,207 km (0.085 R)
• M5: 2,177,247 km (0.06 R)
• M6: 2,721,784 km (0.078 R)
• M7: 3,298,932 km (0.104 R)
• M8: 4,061,283 km (0.036 R)
• M9: 4,642,022 km (0.096 R)
• M10: 5,437,583 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 739.2

Radius: 9.4

Gravity: 8.37 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 0.83 AU - 1.05 AU

Year: 588 Days

Day: 8.8 Hours

Environment

Temp: -155 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 21,242,706 km

• M1: 116,836 km (0.108 R)
• M2: 472,879 km (0.11 R)
• M3: 1,170,304 km (0.077 R)
• M4: 1,582,596 km (0.073 R)
• M5: 2,090,630 km (0.086 R)
• M6: 2,849,540 km (0.094 R)
• M7: 3,433,271 km (0.1 R)
• M8: 4,080,132 km (0.109 R)
• M9: 4,518,454 km (0.095 R)
• M10: 5,123,129 km (0.072 R)
• M11: 5,725,410 km (0.025 R)
• M12: 6,043,904 km (0.098 R)
• M13: 6,374,066 km (0.039 R)
• M14: 7,156,313 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 710

Radius: 13.5

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.92 AU - 2.04 AU

Year: 1799 Days

Day: 6.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 21,242,706 km

• M1: 167,998 km (0.108 R)
• M2: 812,316 km (0.055 R)
• M3: 1,333,366 km (0.036 R)
• M4: 2,137,155 km (0.03 R)
• M5: 2,575,627 km (0.073 R)
• M6: 3,089,944 km (0.095 R)
• M7: 4,213,873 km (0.089 R)
• M8: 5,412,601 km (0.118 R)
• M9: 6,696,300 km (0.12 R)
• M10: 7,536,292 km (0.116 R)
• M11: 8,722,603 km (0.097 R)
• M12: 9,295,563 km (0.108 R)
• M13: 12,387,751 km (0.047 R)
• M14: 13,780,657 km (0.082 R)
• M15: 15,004,218 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457

Radius: 11.4

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 3.38 AU - 5.46 AU

Year: 6000 Days

Day: 10.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 21,242,706 km

• M1: 141,819 km (0.09 R)
• M2: 572,511 km (0.062 R)
• M3: 1,008,140 km (0.062 R)
• M4: 1,536,819 km (0.06 R)
• M5: 2,140,895 km (0.07 R)
• M6: 4,075,345 km (0.119 R)
• M7: 4,785,187 km (0.079 R)
• M8: 5,238,469 km (0.052 R)
• M9: 6,047,943 km (0.084 R)
• M10: 8,285,179 km (0.114 R)
• M11: 8,822,834 km (0.082 R)
• M12: 10,269,295 km (0.112 R)
• M13: 11,302,269 km (0.116 R)
• M14: 13,005,291 km (0.079 R)
• M15: 19,534,041 km (0.046 R)
• M16: 24,849,852 km (0.093 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 38.8

Radius: 5.7

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 5.38 AU - 8.96 AU

Year: 12396 Days

Day: 20.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 21,242,706 km

• M1: 78,389 km (0.067 R)
• M2: 321,785 km (0.07 R)
• M3: 1,002,156 km (0.049 R)
• M4: 1,279,062 km (0.098 R)
• M5: 2,000,124 km (0.062 R)
• M6: 2,185,924 km (0.098 R)
• M7: 2,929,276 km (0.077 R)
• M8: 3,386,148 km (0.067 R)
• M9: 3,789,015 km (0.082 R)
• M10: 4,223,148 km (0.107 R)
• M11: 4,419,121 km (0.106 R)
• M12: 5,673,200 km (0.091 R)
• M13: 8,072,451 km (0.09 R)
• M14: 14,548,094 km (0.081 R)
• M15: 15,920,355 km (0.043 R)
• M16: 16,827,367 km (0.109 R)
• M17: 19,393,868 km (0.081 R)
• M18: 20,181,202 km (0.1 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 208 - 12,260 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit