🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.56

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.72 AU - 0.76 AU

Year: 226 Days

Day: 31.5 Hours

Environment

Temp: 159 °C

Axial Tilt: 20.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 1.91 AU - 3.07 AU

Year: 1394 Days

Day: 31.7 Hours

Environment

Temp: -83 °C

Axial Tilt: 3.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.98

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 2.68 AU - 2.82 AU

Year: 1618 Days

Day: 12.3 Hours

Environment

Temp: -83 °C

Axial Tilt: 19.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 2.97 AU - 3.75 AU

Year: 2185 Days

Day: 40.8 Hours

Environment

Temp: -95 °C

Axial Tilt: 16.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.97

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 3.29 AU - 5.41 AU

Year: 3219 Days

Day: 23.8 Hours

Environment

Temp: -118 °C

Axial Tilt: 10.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.22

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 4.54 AU - 4.76 AU

Year: 3557 Days

Day: 24.2 Hours

Environment

Temp: -130 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.24 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 172.9

Radius: 12.9

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 5.29 AU - 6.35 AU

Year: 4981 Days

Day: 10.7 Hours

Environment

Temp: -143 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 77,132,518 km

• M1: 160,668 km (0.06 R)
• M2: 611,257 km (0.083 R)
• M3: 1,055,862 km (0.114 R)
• M4: 1,568,833 km (0.102 R)
• M5: 2,519,677 km (0.116 R)
• M6: 3,232,660 km (0.113 R)
• M7: 4,636,936 km (0.062 R)
• M8: 6,227,011 km (0.08 R)
• M9: 8,315,697 km (0.097 R)
• M10: 9,014,319 km (0.069 R)
• M11: 10,080,054 km (0.119 R)
• M12: 10,529,147 km (0.105 R)
• M13: 11,148,781 km (0.111 R)
• M14: 12,207,485 km (0.093 R)
• M15: 13,466,352 km (0.086 R)
• M16: 13,874,006 km (0.057 R)
• M17: 17,762,204 km (0.081 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 297.2

Radius: 7.8

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 14.9 AU - 24.06 AU

Year: 30501 Days

Day: 18 Hours

Environment

Temp: -206 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 77,132,518 km

• M1: 135,984 km (0.112 R)
• M2: 439,369 km (0.099 R)
• M3: 1,036,564 km (0.1 R)
• M4: 6,545,804 km (0.073 R)
• M5: 7,182,643 km (0.082 R)
• M6: 8,214,419 km (0.113 R)
• M7: 10,148,570 km (0.117 R)
• M8: 11,573,639 km (0.092 R)
• M9: 12,709,386 km (0.103 R)
• M10: 14,212,845 km (0.069 R)
• M11: 15,200,789 km (0.111 R)
• M12: 15,831,195 km (0.111 R)
• M13: 16,809,116 km (0.087 R)
• M14: 17,059,842 km (0.118 R)
• M15: 20,078,129 km (0.081 R)
• M16: 20,550,110 km (0.086 R)
• M17: 27,147,825 km (0.081 R)
• M18: 30,362,234 km (0.06 R)
• M19: 35,714,696 km (0.104 R)
• M20: 37,820,436 km (0.104 R)
• M21: 38,107,215 km (0.079 R)
• M22: 42,277,405 km (0.079 R)
• M23: 42,896,890 km (0.057 R)
• M24: 43,522,509 km (0.101 R)
• M25: 44,154,111 km (0.106 R)
• M26: 49,258,240 km (0.046 R)
• M27: 58,105,758 km (0.089 R)
• M28: 61,012,145 km (0.054 R)
• M29: 63,405,861 km (0.117 R)
• M30: 64,421,481 km (0.052 R)
• M31: 66,069,002 km (0.05 R)
• M32: 67,112,896 km (0.091 R)
• M33: 68,167,711 km (0.075 R)
• M34: 69,233,446 km (0.058 R)
• M35: 69,662,941 km (0.095 R)
• M36: 70,744,235 km (0.063 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 293.5

Radius: 6

Gravity: 8.15 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 18.56 AU - 20.98 AU

Year: 31185 Days

Day: 22.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 77,132,518 km

• M1: 74,649 km (0.062 R)
• M2: 480,508 km (0.058 R)
• M3: 1,278,613 km (0.081 R)
• M4: 1,659,788 km (0.098 R)
• M5: 4,437,821 km (0.082 R)
• M6: 6,031,936 km (0.114 R)
• M7: 6,683,584 km (0.094 R)
• M8: 9,939,881 km (0.108 R)
• M9: 10,296,373 km (0.119 R)
• M10: 13,106,120 km (0.048 R)
• M11: 15,580,917 km (0.074 R)
• M12: 20,180,304 km (0.099 R)
• M13: 20,945,048 km (0.111 R)
• M14: 21,828,125 km (0.085 R)
• M15: 29,928,400 km (0.074 R)
• M16: 30,174,788 km (0.117 R)
• M17: 39,380,443 km (0.119 R)
• M18: 42,561,941 km (0.067 R)
• M19: 47,900,640 km (0.109 R)
• M20: 49,602,465 km (0.044 R)
• M21: 68,037,710 km (0.098 R)
• M22: 76,901,533 km (0.103 R)

Kuiper Belt

Range: 30.9 - 52.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 486 - 12,434 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit