🌌 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: 3.15

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.51 AU - 0.83 AU

Year: 204 Days

Day: 34.1 Hours

Environment

Temp: 142 °C

Axial Tilt: 13.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 59,869,843 km

• M1: 36,801 km (0.093 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.57

Radius: 1.2

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.88 AU - 1.12 AU

Year: 373 Days

Day: 42.3 Hours

Environment

Temp: 7 °C

Axial Tilt: 11 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 59,869,843 km

• M1: 95,593 km (0.089 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.11

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 1.01 AU - 1.41 AU

Year: 496 Days

Day: 27.2 Hours

Environment

Temp: -7 °C

Axial Tilt: 4.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 59,869,843 km

• M1: 37,549 km (0.038 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.22 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.98

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.02 AU - 1.42 AU

Year: 502 Days

Day: 27.6 Hours

Environment

Temp: -2 °C

Axial Tilt: 28.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.16

Radius: 0.48

Gravity: 0.69 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.29 AU - 1.49 AU

Year: 611 Days

Day: 18.6 Hours

Environment

Temp: -32 °C

Axial Tilt: 16.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 59,869,843 km

• M1: 211,980 km (0.065 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 1.53 AU - 1.75 AU

Year: 783 Days

Day: 14.2 Hours

Environment

Temp: -46 °C

Axial Tilt: 41.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.76 AU - 2.32 AU

Year: 1086 Days

Day: 43.8 Hours

Environment

Temp: -82 °C

Axial Tilt: 27.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 8.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 250.8

Radius: 9

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 8.06 AU - 9.82 AU

Year: 9965 Days

Day: 10.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 59,869,843 km

• M1: 113,994 km (0.07 R)
• M2: 401,371 km (0.093 R)
• M3: 753,674 km (0.057 R)
• M4: 1,218,774 km (0.105 R)
• M5: 1,867,281 km (0.099 R)
• M6: 2,245,464 km (0.099 R)
• M7: 3,096,526 km (0.098 R)
• M8: 3,789,464 km (0.081 R)
• M9: 5,274,971 km (0.067 R)
• M10: 5,754,132 km (0.056 R)
• M11: 7,889,642 km (0.09 R)
• M12: 13,267,985 km (0.101 R)
• M13: 14,497,081 km (0.081 R)
• M14: 14,962,330 km (0.103 R)
• M15: 18,032,378 km (0.106 R)
• M16: 20,978,558 km (0.051 R)
• M17: 21,573,958 km (0.101 R)
• M18: 22,334,065 km (0.066 R)
• M19: 25,469,935 km (0.101 R)
• M20: 28,073,237 km (0.118 R)
• M21: 29,904,166 km (0.056 R)
• M22: 30,658,438 km (0.098 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 505

Radius: 3.8

Gravity: 34.97 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 11 AU - 13.78 AU

Year: 16258 Days

Day: 18.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 59,869,843 km

• M1: 57,146 km (0.085 R)
• M2: 207,941 km (0.079 R)
• M3: 362,476 km (0.107 R)
• M4: 970,741 km (0.118 R)
• M5: 1,304,942 km (0.081 R)
• M6: 1,432,100 km (0.119 R)
• M7: 1,952,851 km (0.062 R)
• M8: 2,678,699 km (0.086 R)
• M9: 3,434,618 km (0.119 R)
• M10: 3,706,138 km (0.049 R)
• M11: 5,390,310 km (0.055 R)
• M12: 5,645,225 km (0.058 R)
• M13: 6,377,956 km (0.073 R)
• M14: 7,085,254 km (0.063 R)
• M15: 9,572,169 km (0.111 R)
• M16: 10,219,031 km (0.055 R)
• M17: 10,894,315 km (0.116 R)
• M18: 13,294,613 km (0.089 R)
• M19: 15,292,493 km (0.11 R)
• M20: 17,090,061 km (0.09 R)
• M21: 17,959,224 km (0.093 R)
• M22: 19,956,954 km (0.03 R)
• M23: 20,920,215 km (0.058 R)
• M24: 22,375,952 km (0.082 R)
• M25: 23,223,723 km (0.112 R)
• M26: 24,190,724 km (0.107 R)
• M27: 25,284,883 km (0.094 R)
• M28: 26,620,193 km (0.118 R)
• M29: 27,358,309 km (0.091 R)
• M30: 28,218,347 km (0.115 R)
• M31: 31,254,286 km (0.064 R)
• M32: 34,006,289 km (0.046 R)
• M33: 34,252,976 km (0.078 R)
• M34: 34,875,004 km (0.075 R)
• M35: 41,654,181 km (0.104 R)
• M36: 43,223,313 km (0.037 R)
• M37: 44,095,468 km (0.082 R)
• M38: 51,825,041 km (0.116 R)
• M39: 56,524,359 km (0.069 R)
• M40: 58,977,016 km (0.068 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 212 - 12,543 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit