🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.91

Radius: 1.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.49 AU - 0.63 AU

Year: 271 Days

Day: 37.5 Hours

Environment

Temp: -119 °C

Axial Tilt: 42.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,198,218 km

• M1: 77,193 km (0.098 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.47

Radius: 1.44

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.61 AU - 0.63 AU

Year: 315 Days

Day: 30 Hours

Environment

Temp: -139 °C

Axial Tilt: 45.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,198,218 km

• M1: 325,375 km (0.073 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828

Radius: 12.8

Gravity: 5.05 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.6 AU - 0.82 AU

Year: 386 Days

Day: 7.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 72,198,218 km

• M1: 159,920 km (0.12 R)
• M2: 591,809 km (0.111 R)
• M3: 1,283,849 km (0.102 R)
• M4: 1,896,901 km (0.077 R)
• M5: 2,295,280 km (0.053 R)
• M6: 2,936,157 km (0.111 R)
• M7: 4,200,858 km (0.096 R)
• M8: 4,828,122 km (0.076 R)
• M9: 5,583,142 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.7

Radius: 13

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.66 AU - 0.78 AU

Year: 394 Days

Day: 8.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 72,198,218 km

• M1: 162,314 km (0.095 R)
• M2: 569,220 km (0.073 R)
• M3: 1,129,464 km (0.109 R)
• M4: 1,556,117 km (0.11 R)
• M5: 2,388,779 km (0.096 R)
• M6: 3,173,120 km (0.057 R)
• M7: 3,923,952 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202

Radius: 10.1

Gravity: 1.98 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 3.87 AU - 3.99 AU

Year: 5030 Days

Day: 10.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 10.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 72,198,218 km

• M1: 125,662 km (0.084 R)
• M2: 807,679 km (0.118 R)
• M3: 1,174,792 km (0.114 R)
• M4: 2,587,594 km (0.119 R)
• M5: 3,480,394 km (0.084 R)
• M6: 3,800,534 km (0.088 R)
• M7: 4,790,423 km (0.119 R)
• M8: 7,033,793 km (0.101 R)
• M9: 7,579,825 km (0.117 R)
• M10: 9,139,233 km (0.111 R)
• M11: 11,183,039 km (0.057 R)
• M12: 12,139,718 km (0.077 R)
• M13: 13,195,430 km (0.096 R)
• M14: 14,454,894 km (0.098 R)
• M15: 15,895,073 km (0.082 R)
• M16: 16,889,151 km (0.075 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 122.3

Radius: 5.5

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 7.69 AU - 10.15 AU

Year: 17201 Days

Day: 17.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 72,198,218 km

• M1: 70,161 km (0.051 R)
• M2: 325,375 km (0.025 R)
• M3: 846,724 km (0.095 R)
• M4: 1,483,861 km (0.105 R)
• M5: 1,712,596 km (0.114 R)
• M6: 3,932,479 km (0.07 R)
• M7: 5,601,842 km (0.031 R)
• M8: 11,341,015 km (0.031 R)
• M9: 21,787,883 km (0.069 R)
• M10: 23,323,206 km (0.115 R)
• M11: 28,929,236 km (0.069 R)
• M12: 30,188,102 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 393.3

Radius: 7.4

Gravity: 7.18 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 10.07 AU - 12.45 AU

Year: 24396 Days

Day: 16.4 Hours

Environment

Temp: -233 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 72,198,218 km

• M1: 99,931 km (0.073 R)
• M2: 485,146 km (0.093 R)
• M3: 891,603 km (0.082 R)
• M4: 1,259,764 km (0.094 R)
• M5: 1,832,424 km (0.043 R)
• M6: 2,198,790 km (0.116 R)
• M7: 3,864,113 km (0.118 R)
• M8: 4,989,239 km (0.064 R)
• M9: 5,986,458 km (0.04 R)
• M10: 7,248,765 km (0.089 R)
• M11: 7,819,780 km (0.084 R)
• M12: 10,766,260 km (0.068 R)
• M13: 11,700,349 km (0.046 R)
• M14: 13,516,018 km (0.114 R)
• M15: 18,467,558 km (0.114 R)
• M16: 22,764,458 km (0.07 R)
• M17: 34,310,122 km (0.036 R)
• M18: 35,778,425 km (0.089 R)
• M19: 40,140,699 km (0.09 R)
• M20: 41,620,222 km (0.045 R)
• M21: 43,135,648 km (0.064 R)
• M22: 52,832,882 km (0.039 R)
• M23: 54,071,702 km (0.091 R)
• M24: 54,429,091 km (0.107 R)
• M25: 56,423,530 km (0.078 R)
• M26: 67,750,183 km (0.115 R)
• M27: 68,582,994 km (0.082 R)
• M28: 69,211,904 km (0.048 R)
• M29: 70,056,533 km (0.069 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 309 - 19,813 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit