🌌 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: 1.21

Radius: 1.08

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.56 AU - 0.64 AU

Year: 173 Days

Day: 23.7 Hours

Environment

Temp: 167 °C

Axial Tilt: 37.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 47,895,231 km

• M1: 185,651 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.13 AU - 1.61 AU

Year: 598 Days

Day: 12 Hours

Environment

Temp: -43 °C

Axial Tilt: 9.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.74

Radius: 0.89

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 2.56 AU - 2.72 AU

Year: 1599 Days

Day: 35.5 Hours

Environment

Temp: -92 °C

Axial Tilt: 18.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 2.66 AU - 4.36 AU

Year: 2451 Days

Day: 18.3 Hours

Environment

Temp: -114 °C

Axial Tilt: 47.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.19 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 4.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.9

Radius: 12.2

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 4.6 AU - 5.12 AU

Year: 3994 Days

Day: 5.5 Hours

Environment

Temp: -131 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,895,231 km

• M1: 151,692 km (0.064 R)
• M2: 889,659 km (0.057 R)
• M3: 1,477,129 km (0.075 R)
• M4: 2,234,244 km (0.101 R)
• M5: 3,116,872 km (0.107 R)
• M6: 3,685,942 km (0.09 R)
• M7: 5,103,831 km (0.089 R)
• M8: 6,324,100 km (0.087 R)
• M9: 7,210,169 km (0.106 R)
• M10: 7,793,002 km (0.109 R)
• M11: 8,914,388 km (0.064 R)
• M12: 9,334,907 km (0.11 R)
• M13: 10,833,429 km (0.082 R)
• M14: 11,231,958 km (0.096 R)
• M15: 12,185,943 km (0.091 R)
• M16: 13,602,186 km (0.097 R)
• M17: 14,066,389 km (0.049 R)
• M18: 14,734,193 km (0.09 R)
• M19: 17,564,436 km (0.102 R)
• M20: 18,004,253 km (0.042 R)
• M21: 19,368,287 km (0.035 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243

Radius: 11.5

Gravity: 1.84 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 10.35 AU - 12.77 AU

Year: 14652 Days

Day: 6.1 Hours

Environment

Temp: -194 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 47,895,231 km

• M1: 149,448 km (0.114 R)
• M2: 547,079 km (0.077 R)
• M3: 973,433 km (0.107 R)
• M4: 1,455,438 km (0.098 R)
• M5: 2,282,116 km (0.064 R)
• M6: 2,811,542 km (0.104 R)
• M7: 4,065,921 km (0.052 R)
• M8: 5,629,517 km (0.085 R)
• M9: 6,242,270 km (0.108 R)
• M10: 13,680,725 km (0.108 R)
• M11: 15,107,889 km (0.111 R)
• M12: 19,370,979 km (0.083 R)
• M13: 21,982,360 km (0.082 R)
• M14: 22,818,014 km (0.104 R)
• M15: 23,674,611 km (0.102 R)
• M16: 25,452,133 km (0.114 R)
• M17: 29,471,529 km (0.05 R)
• M18: 31,631,722 km (0.055 R)
• M19: 37,079,179 km (0.072 R)
• M20: 39,471,697 km (0.09 R)
• M21: 41,584,767 km (0.093 R)
• M22: 42,092,802 km (0.094 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 146

Radius: 8

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 14.18 AU - 15.8 AU

Year: 21635 Days

Day: 15.7 Hours

Environment

Temp: -186 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 47,895,231 km

• M1: 101,577 km (0.119 R)
• M2: 760,256 km (0.065 R)
• M3: 1,029,832 km (0.081 R)
• M4: 1,945,072 km (0.097 R)
• M5: 2,442,784 km (0.059 R)
• M6: 3,742,789 km (0.094 R)
• M7: 4,006,680 km (0.11 R)
• M8: 4,691,389 km (0.099 R)
• M9: 5,157,387 km (0.107 R)
• M10: 6,038,219 km (0.103 R)
• M11: 7,794,049 km (0.105 R)
• M12: 8,538,298 km (0.12 R)
• M13: 9,044,388 km (0.053 R)
• M14: 9,717,429 km (0.085 R)
• M15: 10,371,770 km (0.101 R)
• M16: 15,260,928 km (0.108 R)
• M17: 16,353,291 km (0.071 R)
• M18: 16,705,145 km (0.111 R)
• M19: 18,846,041 km (0.058 R)
• M20: 21,497,513 km (0.111 R)
• M21: 24,754,857 km (0.093 R)
• M22: 25,032,660 km (0.09 R)
• M23: 25,973,332 km (0.084 R)
• M24: 30,077,998 km (0.118 R)
• M25: 33,117,079 km (0.056 R)
• M26: 33,907,704 km (0.119 R)
• M27: 36,954,564 km (0.112 R)
• M28: 43,991,797 km (0.053 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 332 - 17,900 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit