🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.19

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.59 AU - 0.61 AU

Year: 171 Days

Day: 12.6 Hours

Environment

Temp: 190 °C

Axial Tilt: 16.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.64 AU - 0.74 AU

Year: 210 Days

Day: 24 Hours

Environment

Temp: 190 °C

Axial Tilt: 21 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 36,785,856 km

• M1: 145,708 km (0.043 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.71 AU - 0.85 AU

Year: 253 Days

Day: 21.6 Hours

Environment

Temp: 134 °C

Axial Tilt: 33.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.95 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.05

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.77 AU - 1.13 AU

Year: 340 Days

Day: 22.5 Hours

Environment

Temp: 20 °C

Axial Tilt: 23 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.91

Radius: 1.53

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 1.21 AU - 1.53 AU

Year: 589 Days

Day: 15.8 Hours

Environment

Temp: -28 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 1.71 AU - 1.73 AU

Year: 828 Days

Day: 20.6 Hours

Environment

Temp: -55 °C

Axial Tilt: 13.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 5

Radius: 1.9

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.71 AU - 2.31 AU

Year: 1046 Days

Day: 28.5 Hours

Environment

Temp: -60 °C

Axial Tilt: 45.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 3.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.73 AU - 3.99 AU

Year: 2261 Days

Day: 43.1 Hours

Environment

Temp: -111 °C

Axial Tilt: 36.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 9 - Gas Giant

Semi-Major Axis: 5.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 943.3

Radius: 12.1

Gravity: 6.44 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 3.94 AU - 6.16 AU

Year: 4166 Days

Day: 6.3 Hours

Environment

Temp: -147 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,785,856 km

• M1: 152,141 km (0.086 R)
• M2: 618,438 km (0.081 R)
• M3: 1,175,839 km (0.108 R)
• M4: 1,601,445 km (0.111 R)
• M5: 2,030,342 km (0.101 R)
• M6: 2,758,435 km (0.106 R)
• M7: 4,263,988 km (0.069 R)
• M8: 5,264,798 km (0.067 R)
• M9: 6,479,383 km (0.115 R)
• M10: 7,272,401 km (0.073 R)
• M11: 8,467,090 km (0.052 R)
• M12: 9,746,600 km (0.102 R)
• M13: 11,663,548 km (0.053 R)
• M14: 12,240,696 km (0.103 R)
• M15: 14,466,862 km (0.092 R)
• M16: 16,708,437 km (0.104 R)
• M17: 17,817,406 km (0.103 R)
• M18: 19,572,039 km (0.092 R)
• M19: 26,498,570 km (0.103 R)
• M20: 28,090,740 km (0.067 R)

Planet 10 - Gas Giant

Semi-Major Axis: 8.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 362.5

Radius: 13.8

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 7.95 AU - 9.23 AU

Year: 9242 Days

Day: 5.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 36,785,856 km

• M1: 171,888 km (0.116 R)
• M2: 892,351 km (0.059 R)
• M3: 1,440,179 km (0.098 R)
• M4: 2,071,781 km (0.076 R)
• M5: 2,603,901 km (0.044 R)
• M6: 3,082,763 km (0.058 R)
• M7: 3,805,620 km (0.09 R)
• M8: 5,085,879 km (0.113 R)
• M9: 6,230,153 km (0.034 R)
• M10: 7,205,232 km (0.117 R)
• M11: 7,729,722 km (0.115 R)
• M12: 8,523,339 km (0.041 R)
• M13: 9,196,679 km (0.108 R)
• M14: 10,745,914 km (0.049 R)
• M15: 13,221,011 km (0.108 R)
• M16: 14,473,744 km (0.073 R)
• M17: 15,068,844 km (0.118 R)
• M18: 15,556,533 km (0.063 R)
• M19: 16,692,579 km (0.057 R)
• M20: 17,480,212 km (0.115 R)
• M21: 21,795,662 km (0.049 R)
• M22: 24,282,278 km (0.115 R)
• M23: 27,763,121 km (0.064 R)
• M24: 34,107,866 km (0.049 R)
• M25: 34,950,102 km (0.085 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 404 - 12,769 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit