🌌 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: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.55 AU - 0.65 AU

Year: 166 Days

Day: 25.1 Hours

Environment

Temp: 158 °C

Axial Tilt: 47.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.65 AU - 0.87 AU

Year: 236 Days

Day: 38.2 Hours

Environment

Temp: 110 °C

Axial Tilt: 37.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.16

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.28 AU - 1.56 AU

Year: 603 Days

Day: 25.2 Hours

Environment

Temp: 6 °C

Axial Tilt: 0.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.4

Radius: 0.69

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 2.2 AU - 2.3 AU

Year: 1203 Days

Day: 15.1 Hours

Environment

Temp: -64 °C

Axial Tilt: 23.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.43

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 3.16 AU - 4.52 AU

Year: 2682 Days

Day: 12.3 Hours

Environment

Temp: -120 °C

Axial Tilt: 2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.72

Radius: 1.24

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 3.36 AU - 5.04 AU

Year: 3068 Days

Day: 31.7 Hours

Environment

Temp: -128 °C

Axial Tilt: 3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,916,320 km

• M1: 2,139,998 km (0.09 R)

Planet 7 - Terrestrial

Semi-Major Axis: 5.06 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.63

Radius: 0.83

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 3.95 AU - 6.17 AU

Year: 4057 Days

Day: 17.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 29.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 6.83 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 8.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129.9

Radius: 9.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 8.56 AU - 8.64 AU

Year: 8990 Days

Day: 5.6 Hours

Environment

Temp: -171 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 61,916,320 km

• M1: 121,922 km (0.063 R)
• M2: 453,132 km (0.104 R)
• M3: 825,032 km (0.104 R)
• M4: 1,207,105 km (0.12 R)
• M5: 1,601,595 km (0.057 R)
• M6: 3,815,942 km (0.11 R)
• M7: 4,392,493 km (0.061 R)
• M8: 6,751,651 km (0.074 R)
• M9: 8,581,532 km (0.119 R)
• M10: 8,915,883 km (0.118 R)
• M11: 10,848,838 km (0.078 R)
• M12: 13,439,274 km (0.058 R)
• M13: 14,094,962 km (0.081 R)
• M14: 18,301,654 km (0.119 R)
• M15: 20,989,329 km (0.099 R)
• M16: 22,079,000 km (0.058 R)

Planet 9 - Gas Giant

Semi-Major Axis: 11.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 758.1

Radius: 13.1

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 11.11 AU - 11.95 AU

Year: 13955 Days

Day: 7.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 61,916,320 km

• M1: 163,062 km (0.108 R)
• M2: 759,658 km (0.083 R)
• M3: 1,260,811 km (0.056 R)
• M4: 1,949,709 km (0.071 R)
• M5: 2,996,296 km (0.081 R)
• M6: 4,870,009 km (0.085 R)
• M7: 6,533,537 km (0.113 R)
• M8: 7,078,074 km (0.091 R)
• M9: 7,882,162 km (0.044 R)
• M10: 8,306,422 km (0.111 R)
• M11: 8,795,906 km (0.103 R)
• M12: 10,381,195 km (0.093 R)
• M13: 13,170,896 km (0.109 R)
• M14: 14,880,500 km (0.108 R)
• M15: 16,049,608 km (0.085 R)
• M16: 18,323,346 km (0.036 R)
• M17: 18,736,086 km (0.111 R)
• M18: 19,838,323 km (0.063 R)
• M19: 21,709,493 km (0.12 R)
• M20: 22,830,281 km (0.092 R)
• M21: 27,701,487 km (0.064 R)
• M22: 28,355,379 km (0.081 R)
• M23: 29,019,593 km (0.089 R)
• M24: 29,468,088 km (0.052 R)
• M25: 30,379,139 km (0.085 R)
• M26: 31,899,352 km (0.109 R)
• M27: 32,738,746 km (0.112 R)
• M28: 35,985,618 km (0.096 R)
• M29: 37,158,017 km (0.064 R)
• M30: 42,246,139 km (0.07 R)
• M31: 44,435,056 km (0.05 R)
• M32: 48,249,502 km (0.098 R)
• M33: 49,995,160 km (0.117 R)

Kuiper Belt

Range: 30.8 - 51.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 193 - 17,185 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit