🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.76 AU - 0.78 AU

Year: 256 Days

Day: 19.7 Hours

Environment

Temp: 164 °C

Axial Tilt: 13.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.36

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.74 AU - 1.22 AU

Year: 367 Days

Day: 39.6 Hours

Environment

Temp: 15 °C

Axial Tilt: 26.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.2 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1.11 AU - 1.29 AU

Year: 498 Days

Day: 15.8 Hours

Environment

Temp: -14 °C

Axial Tilt: 21 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 83,305,577 km

• M1: 42,336 km (0.066 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 1.4 AU - 1.48 AU

Year: 654 Days

Day: 47.1 Hours

Environment

Temp: -44 °C

Axial Tilt: 9.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.23

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.42 AU - 1.84 AU

Year: 788 Days

Day: 19.2 Hours

Environment

Temp: -69 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 6.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 904.9

Radius: 10.9

Gravity: 7.62 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 5.19 AU - 7.95 AU

Year: 6378 Days

Day: 14.8 Hours

Environment

Temp: -168 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 83,305,577 km

• M1: 137,630 km (0.094 R)
• M2: 526,884 km (0.096 R)
• M3: 874,699 km (0.063 R)
• M4: 1,237,474 km (0.1 R)
• M5: 2,439,193 km (0.062 R)
• M6: 4,090,754 km (0.061 R)
• M7: 4,732,529 km (0.115 R)
• M8: 5,949,956 km (0.113 R)
• M9: 6,703,032 km (0.111 R)
• M10: 7,518,490 km (0.116 R)
• M11: 8,315,846 km (0.035 R)
• M12: 12,782,540 km (0.079 R)
• M13: 13,455,880 km (0.11 R)
• M14: 14,330,728 km (0.094 R)
• M15: 19,722,235 km (0.119 R)
• M16: 20,093,687 km (0.082 R)
• M17: 22,907,324 km (0.11 R)
• M18: 23,483,575 km (0.054 R)
• M19: 24,238,445 km (0.089 R)
• M20: 27,605,295 km (0.077 R)
• M21: 27,976,896 km (0.112 R)
• M22: 34,386,866 km (0.04 R)
• M23: 37,023,229 km (0.076 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 103.8

Radius: 14.4

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 8.01 AU - 10.17 AU

Year: 10380 Days

Day: 14 Hours

Environment

Temp: -185 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 83,305,577 km

• M1: 179,368 km (0.054 R)
• M2: 1,275,621 km (0.037 R)
• M3: 2,120,550 km (0.045 R)
• M4: 3,147,390 km (0.096 R)
• M5: 3,879,970 km (0.064 R)
• M6: 8,800,992 km (0.118 R)
• M7: 10,510,298 km (0.101 R)
• M8: 11,691,074 km (0.046 R)
• M9: 19,020,621 km (0.037 R)
• M10: 23,415,358 km (0.089 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 687.7

Radius: 7.9

Gravity: 11.02 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 13.44 AU - 17.34 AU

Year: 22867 Days

Day: 16.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 83,305,577 km

• M1: 98,585 km (0.104 R)
• M2: 514,317 km (0.047 R)
• M3: 902,374 km (0.114 R)
• M4: 2,553,187 km (0.107 R)
• M5: 3,198,552 km (0.027 R)
• M6: 4,312,907 km (0.106 R)
• M7: 4,736,418 km (0.066 R)
• M8: 5,423,521 km (0.05 R)
• M9: 6,994,598 km (0.088 R)
• M10: 8,356,836 km (0.051 R)
• M11: 8,847,816 km (0.115 R)
• M12: 12,485,887 km (0.115 R)
• M13: 13,791,428 km (0.102 R)
• M14: 14,946,922 km (0.096 R)
• M15: 15,426,682 km (0.112 R)
• M16: 18,615,660 km (0.076 R)
• M17: 19,737,644 km (0.077 R)
• M18: 27,313,878 km (0.104 R)
• M19: 28,883,758 km (0.033 R)
• M20: 29,130,445 km (0.119 R)
• M21: 30,897,196 km (0.064 R)
• M22: 33,002,337 km (0.085 R)
• M23: 36,624,252 km (0.091 R)
• M24: 40,502,726 km (0.08 R)
• M25: 43,020,757 km (0.115 R)
• M26: 47,503,308 km (0.091 R)
• M27: 52,470,855 km (0.107 R)
• M28: 53,022,721 km (0.099 R)
• M29: 59,153,242 km (0.078 R)
• M30: 65,952,914 km (0.081 R)
• M31: 66,381,063 km (0.075 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 227 - 17,245 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit