🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.52

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.66 AU - 0.68 AU

Year: 207 Days

Day: 36 Hours

Environment

Temp: 179 °C

Axial Tilt: 34.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.59 AU - 0.81 AU

Year: 221 Days

Day: 40.4 Hours

Environment

Temp: 122 °C

Axial Tilt: 2.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 60,001,973 km

• M1: 52,808 km (0.076 R)
• M2: 201,209 km (0.111 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.68

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.76 AU - 1.22 AU

Year: 371 Days

Day: 42.5 Hours

Environment

Temp: 28 °C

Axial Tilt: 99.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 60,001,973 km

• M1: 44,580 km (0.111 R)
• M2: 424,260 km (0.072 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.8

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.14 AU - 1.38 AU

Year: 533 Days

Day: 25.9 Hours

Environment

Temp: -33 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,001,973 km

• M1: 39,943 km (0.119 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.66

Radius: 0.85

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 1.46 AU - 1.78 AU

Year: 777 Days

Day: 18.5 Hours

Environment

Temp: -52 °C

Axial Tilt: 48.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,001,973 km

• M1: 32,762 km (0.117 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 2.75 AU - 3.01 AU

Year: 1841 Days

Day: 46.6 Hours

Environment

Temp: -117 °C

Axial Tilt: 38.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.9

Radius: 0.96

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 3.96 AU - 4.38 AU

Year: 3208 Days

Day: 18.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 34.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 466.4

Radius: 11.4

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 3.59 AU - 5.27 AU

Year: 3513 Days

Day: 13.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 60,001,973 km

• M1: 141,819 km (0.12 R)
• M2: 870,809 km (0.12 R)
• M3: 1,322,445 km (0.105 R)
• M4: 1,954,496 km (0.082 R)
• M5: 2,859,264 km (0.09 R)
• M6: 3,443,444 km (0.111 R)
• M7: 3,843,020 km (0.12 R)
• M8: 4,380,824 km (0.11 R)
• M9: 5,330,771 km (0.114 R)
• M10: 5,762,959 km (0.076 R)
• M11: 6,554,481 km (0.088 R)
• M12: 6,932,216 km (0.1 R)
• M13: 7,386,096 km (0.092 R)
• M14: 8,868,311 km (0.115 R)
• M15: 11,019,080 km (0.077 R)
• M16: 11,638,565 km (0.119 R)
• M17: 12,064,320 km (0.034 R)
• M18: 13,358,192 km (0.085 R)
• M19: 14,594,918 km (0.116 R)
• M20: 15,803,070 km (0.115 R)
• M21: 16,537,895 km (0.118 R)
• M22: 18,075,761 km (0.113 R)
• M23: 20,190,477 km (0.095 R)
• M24: 20,558,338 km (0.117 R)
• M25: 20,930,687 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 415.4

Radius: 5.6

Gravity: 13.25 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 11.87 AU - 14.45 AU

Year: 17985 Days

Day: 16.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 60,001,973 km

• M1: 70,012 km (0.032 R)
• M2: 244,892 km (0.069 R)
• M3: 520,900 km (0.09 R)
• M4: 725,400 km (0.111 R)
• M5: 1,592,619 km (0.111 R)
• M6: 2,184,578 km (0.096 R)
• M7: 4,384,265 km (0.045 R)
• M8: 4,968,893 km (0.066 R)
• M9: 5,209,746 km (0.107 R)
• M10: 6,822,710 km (0.07 R)
• M11: 7,338,673 km (0.084 R)
• M12: 8,594,248 km (0.115 R)
• M13: 9,093,606 km (0.046 R)
• M14: 9,664,920 km (0.068 R)
• M15: 12,068,210 km (0.104 R)
• M16: 12,378,476 km (0.079 R)
• M17: 14,701,581 km (0.094 R)
• M18: 16,452,774 km (0.085 R)
• M19: 22,720,027 km (0.071 R)
• M20: 23,480,283 km (0.108 R)
• M21: 25,353,548 km (0.079 R)
• M22: 37,397,673 km (0.086 R)
• M23: 39,535,276 km (0.11 R)
• M24: 40,911,876 km (0.071 R)
• M25: 41,752,915 km (0.06 R)
• M26: 43,906,077 km (0.04 R)
• M27: 50,807,775 km (0.113 R)
• M28: 51,130,308 km (0.115 R)
• M29: 52,598,312 km (0.072 R)
• M30: 57,345,202 km (0.112 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 504 - 18,357 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit