🌌 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: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.98

Radius: 1.55

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.5 AU - 0.68 AU

Year: 164 Days

Day: 13.8 Hours

Environment

Temp: 179 °C

Axial Tilt: 128.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 57,120,275 km

• M1: 104,419 km (0.059 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.84 AU - 1.28 AU

Year: 395 Days

Day: 18.9 Hours

Environment

Temp: 25 °C

Axial Tilt: 8.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.58

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.68 AU - 2.32 AU

Year: 1023 Days

Day: 37.2 Hours

Environment

Temp: -63 °C

Axial Tilt: 47.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.63

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 2.68 AU - 2.68 AU

Year: 1587 Days

Day: 30.3 Hours

Environment

Temp: -99 °C

Axial Tilt: 31 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 2.73 AU - 4.27 AU

Year: 2368 Days

Day: 14.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 5.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.89 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 6.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.1

Radius: 11.7

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 5.31 AU - 7.25 AU

Year: 5692 Days

Day: 9 Hours

Environment

Temp: -146 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 57,120,275 km

• M1: 145,559 km (0.093 R)
• M2: 564,582 km (0.058 R)
• M3: 998,865 km (0.053 R)
• M4: 1,864,588 km (0.106 R)
• M5: 3,576,885 km (0.097 R)
• M6: 4,250,225 km (0.032 R)
• M7: 5,443,268 km (0.101 R)
• M8: 5,822,200 km (0.072 R)
• M9: 6,189,761 km (0.116 R)
• M10: 8,991,281 km (0.051 R)
• M11: 10,277,224 km (0.075 R)
• M12: 12,687,395 km (0.104 R)
• M13: 13,162,967 km (0.106 R)
• M14: 15,185,680 km (0.057 R)
• M15: 16,326,812 km (0.106 R)
• M16: 16,776,354 km (0.106 R)
• M17: 17,233,974 km (0.106 R)
• M18: 21,939,874 km (0.091 R)
• M19: 23,896,764 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 654.6

Radius: 13.7

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 5.97 AU - 7.95 AU

Year: 6641 Days

Day: 6.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 57,120,275 km

• M1: 170,691 km (0.05 R)
• M2: 930,499 km (0.111 R)
• M3: 1,432,400 km (0.095 R)
• M4: 2,994,201 km (0.115 R)
• M5: 3,651,684 km (0.069 R)
• M6: 5,525,248 km (0.113 R)
• M7: 6,724,424 km (0.057 R)
• M8: 7,330,744 km (0.036 R)
• M9: 8,328,562 km (0.103 R)
• M10: 11,072,486 km (0.069 R)
• M11: 13,969,748 km (0.11 R)
• M12: 25,045,676 km (0.105 R)
• M13: 25,983,804 km (0.101 R)
• M14: 26,417,787 km (0.118 R)
• M15: 27,930,072 km (0.057 R)
• M16: 28,661,306 km (0.081 R)
• M17: 32,812,797 km (0.089 R)
• M18: 35,402,336 km (0.098 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.3

Radius: 13.8

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 7.92 AU - 12.08 AU

Year: 11436 Days

Day: 12.9 Hours

Environment

Temp: -182 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 57,120,275 km

• M1: 171,589 km (0.107 R)
• M2: 882,777 km (0.108 R)
• M3: 1,803,402 km (0.096 R)
• M4: 2,429,769 km (0.1 R)
• M5: 3,223,086 km (0.113 R)
• M6: 3,789,015 km (0.112 R)
• M7: 6,198,139 km (0.114 R)
• M8: 6,995,346 km (0.065 R)
• M9: 9,188,900 km (0.095 R)
• M10: 9,854,610 km (0.099 R)
• M11: 10,662,738 km (0.09 R)
• M12: 12,046,967 km (0.094 R)
• M13: 15,311,342 km (0.09 R)
• M14: 16,321,876 km (0.087 R)
• M15: 17,920,628 km (0.12 R)
• M16: 19,289,449 km (0.049 R)
• M17: 21,873,453 km (0.102 R)
• M18: 22,876,357 km (0.089 R)
• M19: 26,783,105 km (0.101 R)
• M20: 27,405,133 km (0.119 R)
• M21: 28,570,650 km (0.099 R)
• M22: 29,438,767 km (0.063 R)
• M23: 29,990,334 km (0.111 R)
• M24: 31,917,155 km (0.054 R)
• M25: 33,207,137 km (0.082 R)
• M26: 37,931,737 km (0.083 R)
• M27: 40,589,941 km (0.105 R)
• M28: 42,243,148 km (0.079 R)
• M29: 42,804,140 km (0.108 R)
• M30: 45,683,749 km (0.086 R)
• M31: 47,020,855 km (0.046 R)
• M32: 51,029,928 km (0.065 R)
• M33: 52,147,125 km (0.07 R)

Kuiper Belt

Range: 30.3 - 57.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 324 - 13,865 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit