🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.66 AU - 0.88 AU

Year: 247 Days

Day: 12.7 Hours

Environment

Temp: 154 °C

Axial Tilt: 34.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 61,102,139 km

• M1: 338,091 km (0.11 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.82 AU - 1.14 AU

Year: 354 Days

Day: 25.1 Hours

Environment

Temp: 18 °C

Axial Tilt: 20.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.69

Radius: 1.69

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.95 AU - 2.43 AU

Year: 1184 Days

Day: 22.8 Hours

Environment

Temp: -72 °C

Axial Tilt: 165.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 4.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.32

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.89 AU - 5.49 AU

Year: 3710 Days

Day: 12.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 22.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,102,139 km

• M1: 166,203 km (0.116 R)

Asteroid Belt

Center: 5.99 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 809.5

Radius: 13.9

Gravity: 4.19 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 6.55 AU - 8.01 AU

Year: 7174 Days

Day: 14.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,102,139 km

• M1: 172,935 km (0.07 R)
• M2: 724,951 km (0.071 R)
• M3: 1,389,315 km (0.091 R)
• M4: 2,171,862 km (0.072 R)
• M5: 2,665,236 km (0.11 R)
• M6: 3,455,860 km (0.077 R)
• M7: 4,083,573 km (0.059 R)
• M8: 5,048,031 km (0.077 R)
• M9: 6,058,265 km (0.102 R)
• M10: 8,145,155 km (0.098 R)
• M11: 12,445,047 km (0.089 R)
• M12: 14,954,850 km (0.103 R)
• M13: 15,904,797 km (0.108 R)
• M14: 21,505,741 km (0.115 R)
• M15: 23,971,264 km (0.051 R)
• M16: 25,626,863 km (0.072 R)
• M17: 31,051,132 km (0.097 R)
• M18: 36,626,944 km (0.117 R)
• M19: 38,118,585 km (0.076 R)
• M20: 39,531,088 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 79.6

Radius: 13.4

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 7.47 AU - 9.27 AU

Year: 8845 Days

Day: 9.6 Hours

Environment

Temp: -168 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 61,102,139 km

• M1: 166,652 km (0.05 R)
• M2: 942,167 km (0.104 R)
• M3: 1,494,632 km (0.09 R)
• M4: 2,823,809 km (0.062 R)
• M5: 4,106,312 km (0.096 R)
• M6: 7,253,253 km (0.119 R)
• M7: 8,115,535 km (0.102 R)
• M8: 9,816,163 km (0.107 R)
• M9: 13,627,319 km (0.094 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 597.6

Radius: 4.7

Gravity: 27.05 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 10.63 AU - 16.83 AU

Year: 18582 Days

Day: 19.2 Hours

Environment

Temp: -197 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 61,102,139 km

• M1: 58,493 km (0.03 R)
• M2: 217,515 km (0.079 R)
• M3: 765,193 km (0.112 R)
• M4: 1,002,755 km (0.107 R)
• M5: 1,205,310 km (0.103 R)
• M6: 1,496,876 km (0.065 R)
• M7: 3,590,498 km (0.118 R)
• M8: 7,103,056 km (0.065 R)
• M9: 7,471,366 km (0.117 R)
• M10: 14,191,901 km (0.109 R)
• M11: 15,990,965 km (0.113 R)
• M12: 18,446,614 km (0.047 R)
• M13: 20,768,523 km (0.067 R)
• M14: 36,275,240 km (0.117 R)
• M15: 42,536,060 km (0.05 R)
• M16: 44,360,705 km (0.114 R)
• M17: 52,353,271 km (0.107 R)
• M18: 57,508,114 km (0.033 R)
• M19: 62,021,781 km (0.106 R)
• M20: 64,364,783 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 252.5

Radius: 5.9

Gravity: 7.25 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 16.04 AU - 16.26 AU

Year: 23705 Days

Day: 24.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 61,102,139 km

• M1: 73,602 km (0.078 R)
• M2: 352,602 km (0.037 R)
• M3: 576,401 km (0.095 R)
• M4: 906,563 km (0.102 R)
• M5: 2,246,661 km (0.103 R)
• M6: 2,623,199 km (0.114 R)
• M7: 4,187,843 km (0.052 R)
• M8: 4,627,212 km (0.117 R)
• M9: 6,572,732 km (0.062 R)
• M10: 7,297,384 km (0.112 R)
• M11: 7,933,175 km (0.084 R)
• M12: 9,736,727 km (0.05 R)
• M13: 11,919,360 km (0.07 R)
• M14: 12,543,781 km (0.07 R)
• M15: 13,321,541 km (0.083 R)
• M16: 13,520,955 km (0.074 R)
• M17: 15,406,187 km (0.092 R)
• M18: 18,020,709 km (0.08 R)
• M19: 18,264,703 km (0.039 R)
• M20: 22,947,266 km (0.117 R)
• M21: 29,482,599 km (0.088 R)
• M22: 30,737,874 km (0.064 R)
• M23: 31,203,124 km (0.072 R)
• M24: 34,842,840 km (0.057 R)
• M25: 38,217,918 km (0.076 R)
• M26: 39,026,644 km (0.09 R)
• M27: 41,379,818 km (0.093 R)
• M28: 43,096,753 km (0.087 R)
• M29: 43,387,422 km (0.111 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 268 - 15,732 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit