🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.24

Radius: 0.57

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.41 AU - 0.67 AU

Year: 260 Days

Day: 27.7 Hours

Environment

Temp: -129 °C

Axial Tilt: 0.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.44

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.52 AU - 0.58 AU

Year: 268 Days

Day: 19.6 Hours

Environment

Temp: -113 °C

Axial Tilt: 19.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.37

Radius: 0.67

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.59 AU - 0.73 AU

Year: 352 Days

Day: 24.9 Hours

Environment

Temp: -131 °C

Axial Tilt: 38.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.53 AU - 0.79 AU

Year: 352 Days

Day: 29.2 Hours

Environment

Temp: -124 °C

Axial Tilt: 20.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 161.1

Radius: 14.7

Gravity: 0.75 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.77 AU - 0.85 AU

Year: 478 Days

Day: 6.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 69,235,762 km

• M1: 182,809 km (0.105 R)
• M2: 664,215 km (0.116 R)
• M3: 1,129,614 km (0.111 R)
• M4: 2,654,764 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 130.9

Radius: 8.9

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 2.91 AU - 3.47 AU

Year: 3738 Days

Day: 8.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 69,235,762 km

• M1: 111,301 km (0.118 R)
• M2: 453,730 km (0.073 R)
• M3: 980,165 km (0.081 R)
• M4: 1,440,927 km (0.104 R)
• M5: 1,742,366 km (0.081 R)
• M6: 2,501,576 km (0.09 R)
• M7: 2,898,608 km (0.085 R)
• M8: 3,767,622 km (0.118 R)
• M9: 5,070,470 km (0.087 R)
• M10: 8,267,975 km (0.118 R)
• M11: 9,699,028 km (0.055 R)
• M12: 10,267,500 km (0.118 R)
• M13: 10,893,418 km (0.06 R)
• M14: 11,397,712 km (0.117 R)
• M15: 12,414,080 km (0.064 R)
• M16: 12,765,934 km (0.081 R)
• M17: 13,654,097 km (0.068 R)
• M18: 14,325,642 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 88.2

Radius: 6.8

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 6.91 AU - 10.91 AU

Year: 17447 Days

Day: 22.4 Hours

Environment

Temp: -223 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 69,235,762 km

• M1: 97,687 km (0.113 R)
• M2: 533,017 km (0.116 R)
• M3: 1,597,855 km (0.045 R)
• M4: 2,945,283 km (0.109 R)
• M5: 4,328,914 km (0.076 R)
• M6: 4,892,299 km (0.048 R)
• M7: 5,235,626 km (0.117 R)
• M8: 6,497,185 km (0.087 R)
• M9: 9,129,659 km (0.102 R)
• M10: 10,894,764 km (0.12 R)
• M11: 16,563,626 km (0.103 R)
• M12: 16,947,943 km (0.104 R)
• M13: 21,348,514 km (0.074 R)
• M14: 22,420,532 km (0.031 R)
• M15: 28,872,688 km (0.046 R)
• M16: 34,245,496 km (0.079 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 739.7

Radius: 6

Gravity: 20.55 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 8.43 AU - 11.49 AU

Year: 20620 Days

Day: 19.1 Hours

Environment

Temp: -236 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 69,235,762 km

• M1: 74,799 km (0.102 R)
• M2: 266,135 km (0.111 R)
• M3: 655,837 km (0.105 R)
• M4: 933,790 km (0.099 R)
• M5: 1,174,942 km (0.111 R)
• M6: 2,245,165 km (0.054 R)
• M7: 6,626,288 km (0.05 R)
• M8: 8,551,164 km (0.059 R)
• M9: 10,447,616 km (0.091 R)
• M10: 15,524,220 km (0.091 R)
• M11: 17,963,862 km (0.088 R)
• M12: 28,322,168 km (0.064 R)
• M13: 29,046,371 km (0.099 R)
• M14: 32,328,100 km (0.117 R)
• M15: 49,997,703 km (0.058 R)
• M16: 55,808,533 km (0.103 R)
• M17: 60,054,420 km (0.075 R)
• M18: 60,252,338 km (0.107 R)
• M19: 61,048,497 km (0.09 R)
• M20: 66,184,192 km (0.06 R)
• M21: 77,773,689 km (0.086 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 360.4

Radius: 5.4

Gravity: 12.36 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 9.41 AU - 12.6 AU

Year: 23933 Days

Day: 18.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 69,235,762 km

• M1: 67,169 km (0.093 R)
• M2: 273,764 km (0.095 R)
• M3: 707,748 km (0.097 R)
• M4: 1,023,399 km (0.09 R)
• M5: 1,553,275 km (0.064 R)
• M6: 2,068,490 km (0.063 R)
• M7: 2,621,254 km (0.058 R)
• M8: 3,187,931 km (0.025 R)
• M9: 3,892,686 km (0.057 R)
• M10: 4,107,359 km (0.08 R)
• M11: 5,118,790 km (0.036 R)
• M12: 5,376,996 km (0.065 R)
• M13: 5,879,196 km (0.07 R)
• M14: 6,712,307 km (0.077 R)
• M15: 7,527,017 km (0.038 R)
• M16: 8,661,418 km (0.051 R)
• M17: 10,658,998 km (0.089 R)
• M18: 10,838,216 km (0.118 R)
• M19: 12,149,292 km (0.105 R)
• M20: 14,490,798 km (0.101 R)
• M21: 16,551,957 km (0.114 R)
• M22: 19,862,558 km (0.093 R)
• M23: 22,201,970 km (0.095 R)
• M24: 31,033,779 km (0.088 R)
• M25: 34,690,549 km (0.041 R)
• M26: 38,624,674 km (0.116 R)
• M27: 39,047,887 km (0.074 R)
• M28: 39,474,091 km (0.091 R)
• M29: 43,603,441 km (0.078 R)
• M30: 49,323,615 km (0.078 R)
• M31: 56,243,563 km (0.07 R)
• M32: 57,701,096 km (0.113 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 254 - 17,635 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit