🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.51

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.63 AU - 0.65 AU

Year: 179 Days

Day: 24.7 Hours

Environment

Temp: 202 °C

Axial Tilt: 24.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.91 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.81 AU - 1.01 AU

Year: 304 Days

Day: 42.1 Hours

Environment

Temp: 150 °C

Axial Tilt: 72.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.4 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.51

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 1.09 AU - 1.71 AU

Year: 580 Days

Day: 17.5 Hours

Environment

Temp: 11 °C

Axial Tilt: 31.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 4.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 4.03 AU - 5.91 AU

Year: 3876 Days

Day: 27.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 25.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 12.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 543.3

Radius: 13.9

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 10.85 AU - 13.21 AU

Year: 14597 Days

Day: 12.6 Hours

Environment

Temp: -172 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 93,782,726 km

• M1: 172,935 km (0.102 R)
• M2: 677,678 km (0.034 R)
• M3: 1,256,323 km (0.063 R)
• M4: 2,697,998 km (0.087 R)
• M5: 3,472,167 km (0.091 R)
• M6: 4,095,990 km (0.075 R)
• M7: 4,955,878 km (0.056 R)
• M8: 6,234,940 km (0.089 R)
• M9: 11,745,078 km (0.103 R)
• M10: 13,029,675 km (0.084 R)
• M11: 16,761,993 km (0.035 R)
• M12: 20,632,239 km (0.099 R)
• M13: 21,242,449 km (0.106 R)
• M14: 22,044,742 km (0.074 R)
• M15: 22,499,221 km (0.09 R)
• M16: 24,283,175 km (0.06 R)
• M17: 25,557,001 km (0.064 R)
• M18: 27,289,494 km (0.029 R)
• M19: 27,919,301 km (0.096 R)
• M20: 28,558,832 km (0.037 R)
• M21: 31,558,120 km (0.112 R)
• M22: 32,602,911 km (0.12 R)
• M23: 36,001,176 km (0.095 R)
• M24: 37,141,860 km (0.056 R)
• M25: 38,175,881 km (0.093 R)
• M26: 39,495,334 km (0.104 R)
• M27: 49,595,733 km (0.095 R)
• M28: 55,404,619 km (0.079 R)

Planet 6 - Ice Giant

Semi-Major Axis: 15.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 40.9

Radius: 6

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 11.88 AU - 18.78 AU

Year: 20999 Days

Day: 17.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 119 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 93,782,726 km

• M1: 78,240 km (0.116 R)
• M2: 387,758 km (0.116 R)
• M3: 996,471 km (0.058 R)
• M4: 2,095,417 km (0.116 R)
• M5: 2,443,831 km (0.091 R)
• M6: 4,116,036 km (0.117 R)
• M7: 5,900,888 km (0.117 R)
• M8: 7,810,954 km (0.11 R)
• M9: 9,374,700 km (0.083 R)
• M10: 9,796,117 km (0.1 R)
• M11: 11,089,840 km (0.109 R)
• M12: 12,645,059 km (0.048 R)
• M13: 13,211,586 km (0.105 R)
• M14: 21,752,428 km (0.114 R)
• M15: 27,786,159 km (0.107 R)

Planet 7 - Ice Giant

Semi-Major Axis: 18.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 211.6

Radius: 3.7

Gravity: 15.46 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 17.44 AU - 18.7 AU

Year: 26873 Days

Day: 23.5 Hours

Environment

Temp: -189 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 93,782,726 km

• M1: 96,341 km (0.118 R)
• M2: 455,226 km (0.084 R)
• M3: 650,751 km (0.074 R)
• M4: 1,083,687 km (0.083 R)
• M5: 1,434,644 km (0.054 R)
• M6: 2,752,451 km (0.079 R)
• M7: 4,051,410 km (0.062 R)
• M8: 6,710,960 km (0.053 R)
• M9: 11,514,548 km (0.069 R)
• M10: 13,096,546 km (0.087 R)
• M11: 19,637,862 km (0.088 R)
• M12: 24,392,382 km (0.084 R)
• M13: 37,405,601 km (0.073 R)
• M14: 38,209,989 km (0.1 R)
• M15: 38,616,446 km (0.1 R)
• M16: 54,214,119 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 664.2

Radius: 3.9

Gravity: 43.67 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 17.3 AU - 19.66 AU

Year: 27793 Days

Day: 17.4 Hours

Environment

Temp: -199 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 93,782,726 km

• M1: 48,470 km (0.102 R)
• M2: 264,040 km (0.104 R)
• M3: 1,006,345 km (0.08 R)
• M4: 1,478,177 km (0.067 R)
• M5: 2,382,196 km (0.088 R)
• M6: 2,681,841 km (0.106 R)
• M7: 2,922,843 km (0.064 R)
• M8: 5,825,341 km (0.097 R)
• M9: 6,894,367 km (0.025 R)
• M10: 11,625,251 km (0.074 R)
• M11: 11,977,404 km (0.096 R)
• M12: 12,555,749 km (0.082 R)
• M13: 13,380,931 km (0.106 R)
• M14: 17,775,518 km (0.074 R)
• M15: 22,280,060 km (0.087 R)
• M16: 22,604,837 km (0.082 R)
• M17: 29,782,393 km (0.12 R)
• M18: 30,574,065 km (0.104 R)
• M19: 30,707,357 km (0.113 R)
• M20: 34,889,066 km (0.091 R)
• M21: 47,324,090 km (0.045 R)
• M22: 47,502,560 km (0.073 R)
• M23: 62,413,428 km (0.106 R)

Kuiper Belt

Range: 31.4 - 55.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 386 - 13,585 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit