🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.61 AU - 0.77 AU

Year: 206 Days

Day: 13.3 Hours

Environment

Temp: 162 °C

Axial Tilt: 17.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.75 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.22

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.69 AU - 0.81 AU

Year: 234 Days

Day: 35.5 Hours

Environment

Temp: 187 °C

Axial Tilt: 33.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 66,736,104 km

• M1: 51,013 km (0.12 R)
• M2: 590,164 km (0.089 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 2.5 AU - 2.7 AU

Year: 1509 Days

Day: 22.2 Hours

Environment

Temp: -88 °C

Axial Tilt: 43.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.38

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 2.97 AU - 4.29 AU

Year: 2489 Days

Day: 40.7 Hours

Environment

Temp: -110 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.96 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 3.32 AU - 4.6 AU

Year: 2836 Days

Day: 36.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 86.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.95

Radius: 0.98

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 3.49 AU - 4.47 AU

Year: 2858 Days

Day: 40.1 Hours

Environment

Temp: -114 °C

Axial Tilt: 58 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 9.54 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 15.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 896.2

Radius: 6.2

Gravity: 23.31 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 13.23 AU - 16.95 AU

Year: 21096 Days

Day: 16.6 Hours

Environment

Temp: -193 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 66,736,104 km

• M1: 78,838 km (0.112 R)
• M2: 874,998 km (0.107 R)
• M3: 1,283,101 km (0.066 R)
• M4: 1,539,512 km (0.06 R)
• M5: 1,849,478 km (0.097 R)
• M6: 3,708,082 km (0.108 R)
• M7: 5,346,628 km (0.056 R)
• M8: 7,466,430 km (0.03 R)
• M9: 13,270,229 km (0.119 R)
• M10: 17,325,677 km (0.102 R)
• M11: 20,809,961 km (0.12 R)
• M12: 21,929,402 km (0.113 R)
• M13: 23,520,076 km (0.05 R)
• M14: 23,847,097 km (0.047 R)
• M15: 27,048,043 km (0.086 R)
• M16: 35,989,807 km (0.109 R)
• M17: 42,233,723 km (0.085 R)
• M18: 43,367,226 km (0.058 R)
• M19: 53,362,159 km (0.115 R)
• M20: 54,116,132 km (0.117 R)
• M21: 56,032,331 km (0.107 R)
• M22: 61,430,870 km (0.101 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 351.1

Radius: 3.5

Gravity: 28.66 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 14.79 AU - 17.13 AU

Year: 22947 Days

Day: 21.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 66,736,104 km

• M1: 43,982 km (0.081 R)
• M2: 287,078 km (0.086 R)
• M3: 823,686 km (0.055 R)
• M4: 1,385,575 km (0.038 R)
• M5: 1,539,212 km (0.113 R)
• M6: 1,755,681 km (0.101 R)
• M7: 2,462,082 km (0.098 R)
• M8: 2,952,314 km (0.116 R)
• M9: 3,560,579 km (0.086 R)
• M10: 3,879,222 km (0.115 R)
• M11: 4,844,877 km (0.077 R)
• M12: 6,080,405 km (0.095 R)
• M13: 8,581,831 km (0.115 R)
• M14: 11,260,980 km (0.088 R)
• M15: 12,136,277 km (0.108 R)
• M16: 14,021,210 km (0.055 R)
• M17: 16,640,519 km (0.105 R)
• M18: 16,799,392 km (0.093 R)
• M19: 18,699,135 km (0.109 R)
• M20: 19,745,124 km (0.071 R)
• M21: 21,292,564 km (0.062 R)
• M22: 21,573,808 km (0.101 R)
• M23: 23,712,310 km (0.099 R)
• M24: 26,959,481 km (0.099 R)
• M25: 27,399,000 km (0.05 R)
• M26: 32,305,211 km (0.089 R)
• M27: 41,874,538 km (0.093 R)
• M28: 42,316,002 km (0.091 R)
• M29: 47,059,750 km (0.052 R)
• M30: 49,805,769 km (0.115 R)
• M31: 54,035,050 km (0.114 R)
• M32: 59,048,823 km (0.109 R)
• M33: 61,289,350 km (0.029 R)
• M34: 63,006,434 km (0.099 R)

Kuiper Belt

Range: 30.5 - 52.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 165 - 18,053 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit