🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.68 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.86

Radius: 1.72

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.63 AU - 0.73 AU

Year: 196 Days

Day: 19.6 Hours

Environment

Temp: 216 °C

Axial Tilt: 37.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.29 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.98

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 1 AU - 1.58 AU

Year: 513 Days

Day: 47.9 Hours

Environment

Temp: 23 °C

Axial Tilt: 44.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.47

Radius: 0.74

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.43 AU - 1.89 AU

Year: 748 Days

Day: 30.5 Hours

Environment

Temp: -36 °C

Axial Tilt: 4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.03

Radius: 1.01

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.47 AU - 2.07 AU

Year: 824 Days

Day: 47.9 Hours

Environment

Temp: -39 °C

Axial Tilt: 37.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 45,722,135 km

• M1: 875,596 km (0.091 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.85

Radius: 0.94

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 1.88 AU - 2.8 AU

Year: 1252 Days

Day: 20 Hours

Environment

Temp: -71 °C

Axial Tilt: 31.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 5.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29

Radius: 13.8

Gravity: 0.15 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 4.46 AU - 7.12 AU

Year: 4874 Days

Day: 13 Hours

Environment

Temp: -133 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 45,722,135 km

• M1: 173,683 km (0.111 R)
• M2: 1,142,778 km (0.111 R)
• M3: 1,677,890 km (0.117 R)
• M4: 2,914,615 km (0.101 R)
• M5: 3,969,430 km (0.103 R)
• M6: 6,420,292 km (0.112 R)
• M7: 8,408,896 km (0.058 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.3

Radius: 8.4

Gravity: 11.89 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 4.71 AU - 7.09 AU

Year: 5014 Days

Day: 9.6 Hours

Environment

Temp: -146 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 45,722,135 km

• M1: 104,569 km (0.097 R)
• M2: 443,408 km (0.032 R)
• M3: 828,024 km (0.105 R)
• M4: 1,171,651 km (0.092 R)
• M5: 1,572,573 km (0.114 R)
• M6: 1,847,085 km (0.09 R)
• M7: 2,410,620 km (0.101 R)
• M8: 3,163,845 km (0.096 R)
• M9: 3,650,487 km (0.094 R)
• M10: 4,853,853 km (0.098 R)
• M11: 5,770,887 km (0.074 R)
• M12: 7,392,229 km (0.115 R)
• M13: 8,444,351 km (0.065 R)
• M14: 9,171,546 km (0.066 R)
• M15: 9,636,048 km (0.116 R)
• M16: 10,339,606 km (0.116 R)
• M17: 12,553,505 km (0.116 R)
• M18: 13,608,021 km (0.069 R)
• M19: 14,268,346 km (0.117 R)
• M20: 18,487,006 km (0.102 R)
• M21: 18,956,593 km (0.095 R)
• M22: 20,059,878 km (0.066 R)
• M23: 20,770,767 km (0.085 R)
• M24: 21,645,914 km (0.09 R)
• M25: 29,826,674 km (0.066 R)
• M26: 30,379,887 km (0.039 R)
• M27: 31,506,808 km (0.08 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.8

Radius: 13.8

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 8.69 AU - 12.81 AU

Year: 12331 Days

Day: 14.4 Hours

Environment

Temp: -177 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 45,722,135 km

• M1: 172,786 km (0.076 R)
• M2: 1,840,503 km (0.03 R)
• M3: 2,318,468 km (0.101 R)
• M4: 2,939,000 km (0.103 R)
• M5: 3,376,274 km (0.037 R)
• M6: 7,065,507 km (0.104 R)
• M7: 8,136,179 km (0.092 R)
• M8: 9,094,204 km (0.088 R)
• M9: 11,486,274 km (0.09 R)
• M10: 12,052,801 km (0.12 R)
• M11: 14,038,414 km (0.093 R)
• M12: 14,626,782 km (0.108 R)
• M13: 19,505,468 km (0.096 R)
• M14: 20,914,082 km (0.106 R)
• M15: 22,708,957 km (0.08 R)
• M16: 25,460,660 km (0.099 R)
• M17: 34,400,330 km (0.072 R)
• M18: 35,579,310 km (0.1 R)
• M19: 36,123,996 km (0.096 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 89.1

Radius: 3.7

Gravity: 6.51 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 17.49 AU - 17.71 AU

Year: 25831 Days

Day: 21.3 Hours

Environment

Temp: -190 °C

Axial Tilt: 130.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 45,722,135 km

• M1: 48,021 km (0.103 R)
• M2: 566,228 km (0.105 R)
• M3: 1,254,827 km (0.063 R)
• M4: 4,910,401 km (0.118 R)
• M5: 5,552,475 km (0.081 R)
• M6: 6,357,910 km (0.074 R)
• M7: 13,969,000 km (0.031 R)
• M8: 14,920,892 km (0.113 R)
• M9: 15,512,402 km (0.092 R)
• M10: 15,645,843 km (0.072 R)
• M11: 16,393,982 km (0.057 R)
• M12: 22,651,810 km (0.114 R)
• M13: 24,410,184 km (0.056 R)
• M14: 24,590,898 km (0.094 R)
• M15: 25,322,581 km (0.081 R)
• M16: 36,079,416 km (0.119 R)
• M17: 39,207,508 km (0.091 R)
• M18: 44,634,619 km (0.073 R)

Kuiper Belt

Range: 31.4 - 52.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 324 - 13,712 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit