🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.66 AU - 0.8 AU

Year: 228 Days

Day: 31.1 Hours

Environment

Temp: 113 °C

Axial Tilt: 24.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.17 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.01 AU - 1.33 AU

Year: 462 Days

Day: 44.4 Hours

Environment

Temp: 9 °C

Axial Tilt: 47.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.3

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.96 AU - 1.5 AU

Year: 498 Days

Day: 13.4 Hours

Environment

Temp: 7 °C

Axial Tilt: 22.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 84,244,614 km

• M1: 333,603 km (0.091 R)
• M2: 1,030,879 km (0.12 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.39

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 2.05 AU - 2.43 AU

Year: 1225 Days

Day: 25 Hours

Environment

Temp: -74 °C

Axial Tilt: 37 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,244,614 km

• M1: 709,244 km (0.117 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.76

Radius: 0.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 2.29 AU - 2.49 AU

Year: 1350 Days

Day: 47.4 Hours

Environment

Temp: -80 °C

Axial Tilt: 13.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,244,614 km

• M1: 279,449 km (0.116 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.63

Radius: 0.83

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 3.33 AU - 4.47 AU

Year: 2813 Days

Day: 33.8 Hours

Environment

Temp: -125 °C

Axial Tilt: 52.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,244,614 km

• M1: 367,412 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 208.7

Radius: 13.3

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 8.51 AU - 8.81 AU

Year: 9308 Days

Day: 9.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 84,244,614 km

• M1: 165,605 km (0.097 R)
• M2: 873,352 km (0.118 R)
• M3: 1,367,474 km (0.084 R)
• M4: 2,078,962 km (0.052 R)
• M5: 2,824,258 km (0.093 R)
• M6: 3,340,670 km (0.084 R)
• M7: 5,829,081 km (0.077 R)
• M8: 6,510,649 km (0.062 R)
• M9: 7,812,599 km (0.066 R)
• M10: 9,240,660 km (0.114 R)
• M11: 9,654,897 km (0.051 R)
• M12: 10,125,083 km (0.082 R)
• M13: 13,750,139 km (0.09 R)
• M14: 16,904,859 km (0.039 R)
• M15: 17,400,776 km (0.028 R)
• M16: 20,513,458 km (0.098 R)
• M17: 27,905,388 km (0.115 R)
• M18: 29,037,994 km (0.094 R)
• M19: 30,110,611 km (0.082 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 63.3

Radius: 7

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 12.02 AU - 14.06 AU

Year: 17199 Days

Day: 24.7 Hours

Environment

Temp: -184 °C

Axial Tilt: 41.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 84,244,614 km

• M1: 87,066 km (0.059 R)
• M2: 316,998 km (0.033 R)
• M3: 554,559 km (0.034 R)
• M4: 812,765 km (0.104 R)
• M5: 1,417,141 km (0.092 R)
• M6: 1,984,416 km (0.097 R)
• M7: 2,857,768 km (0.087 R)
• M8: 4,226,289 km (0.087 R)
• M9: 5,108,767 km (0.092 R)
• M10: 5,333,164 km (0.075 R)
• M11: 7,128,339 km (0.052 R)
• M12: 18,803,704 km (0.044 R)
• M13: 29,194,623 km (0.07 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 416.2

Radius: 3.8

Gravity: 28.82 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 14.67 AU - 23.03 AU

Year: 29892 Days

Day: 20.8 Hours

Environment

Temp: -197 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 84,244,614 km

• M1: 47,273 km (0.118 R)
• M2: 337,194 km (0.108 R)
• M3: 919,578 km (0.076 R)
• M4: 1,779,317 km (0.099 R)
• M5: 2,016,878 km (0.063 R)
• M6: 2,186,822 km (0.114 R)
• M7: 3,073,039 km (0.113 R)
• M8: 3,212,614 km (0.059 R)
• M9: 3,626,402 km (0.119 R)
• M10: 3,814,147 km (0.115 R)
• M11: 4,703,955 km (0.107 R)
• M12: 5,435,938 km (0.11 R)
• M13: 7,367,246 km (0.099 R)
• M14: 7,668,686 km (0.107 R)
• M15: 9,593,562 km (0.096 R)
• M16: 11,281,923 km (0.025 R)
• M17: 12,300,685 km (0.105 R)
• M18: 13,231,782 km (0.091 R)
• M19: 15,314,035 km (0.064 R)
• M20: 16,475,214 km (0.079 R)
• M21: 16,645,755 km (0.11 R)
• M22: 20,113,883 km (0.037 R)
• M23: 25,827,025 km (0.066 R)
• M24: 27,347,688 km (0.083 R)
• M25: 28,557,186 km (0.113 R)
• M26: 29,424,854 km (0.049 R)
• M27: 29,801,990 km (0.109 R)
• M28: 30,952,847 km (0.118 R)
• M29: 31,473,746 km (0.048 R)
• M30: 33,752,720 km (0.101 R)
• M31: 34,722,264 km (0.102 R)
• M32: 37,594,543 km (0.113 R)
• M33: 44,133,616 km (0.106 R)
• M34: 52,857,715 km (0.109 R)
• M35: 69,534,736 km (0.109 R)
• M36: 71,102,073 km (0.048 R)
• M37: 75,945,154 km (0.092 R)
• M38: 83,992,323 km (0.045 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 363 - 16,594 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit