🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 0.52 AU - 0.58 AU

Year: 154 Days

Day: 20.3 Hours

Environment

Temp: 163 °C

Axial Tilt: 8.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.46

Radius: 1.43

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.57 AU - 0.77 AU

Year: 208 Days

Day: 27.1 Hours

Environment

Temp: 113 °C

Axial Tilt: 20.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.19

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.67 AU - 1.05 AU

Year: 302 Days

Day: 30.2 Hours

Environment

Temp: 48 °C

Axial Tilt: 21.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.56

Radius: 1.66

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.12 AU - 1.52 AU

Year: 574 Days

Day: 12.9 Hours

Environment

Temp: -26 °C

Axial Tilt: 35.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.49

Radius: 1.17

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.38 AU - 1.98 AU

Year: 825 Days

Day: 24.9 Hours

Environment

Temp: -54 °C

Axial Tilt: 47.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 65,343,943 km

• M1: 235,766 km (0.071 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.62

Radius: 1.47

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 2.02 AU - 2.32 AU

Year: 1211 Days

Day: 20.6 Hours

Environment

Temp: -81 °C

Axial Tilt: 44.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 6.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 206.5

Radius: 9.3

Gravity: 2.39 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 4.76 AU - 7.36 AU

Year: 5650 Days

Day: 15 Hours

Environment

Temp: -157 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 65,343,943 km

• M1: 124,465 km (0.096 R)
• M2: 540,946 km (0.055 R)
• M3: 1,889,571 km (0.065 R)
• M4: 2,562,462 km (0.109 R)
• M5: 3,100,266 km (0.067 R)
• M6: 4,183,504 km (0.099 R)
• M7: 4,788,329 km (0.037 R)
• M8: 6,570,338 km (0.114 R)
• M9: 7,739,446 km (0.113 R)
• M10: 8,069,010 km (0.11 R)
• M11: 8,373,591 km (0.084 R)
• M12: 9,481,962 km (0.06 R)
• M13: 10,325,993 km (0.113 R)
• M14: 12,564,276 km (0.12 R)
• M15: 14,208,507 km (0.043 R)
• M16: 17,690,995 km (0.106 R)
• M17: 18,790,390 km (0.118 R)
• M18: 21,060,987 km (0.098 R)
• M19: 21,381,276 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 505.5

Radius: 13.9

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 7.46 AU - 7.74 AU

Year: 7935 Days

Day: 5.4 Hours

Environment

Temp: -163 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 65,343,943 km

• M1: 181,612 km (0.108 R)
• M2: 743,352 km (0.112 R)
• M3: 1,338,901 km (0.103 R)
• M4: 1,984,715 km (0.119 R)
• M5: 2,502,623 km (0.104 R)
• M6: 3,111,037 km (0.087 R)
• M7: 3,630,890 km (0.099 R)
• M8: 5,398,987 km (0.096 R)
• M9: 14,313,674 km (0.08 R)
• M10: 15,638,513 km (0.079 R)
• M11: 21,532,669 km (0.047 R)
• M12: 23,924,589 km (0.095 R)
• M13: 25,701,064 km (0.101 R)
• M14: 26,312,321 km (0.076 R)
• M15: 29,610,505 km (0.052 R)
• M16: 31,557,222 km (0.111 R)
• M17: 33,277,897 km (0.107 R)
• M18: 36,905,645 km (0.101 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 654.9

Radius: 5

Gravity: 26.2 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 12.23 AU - 12.31 AU

Year: 16279 Days

Day: 24.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 65,343,943 km

• M1: 62,981 km (0.096 R)
• M2: 261,198 km (0.112 R)
• M3: 953,387 km (0.118 R)
• M4: 1,222,813 km (0.088 R)
• M5: 1,969,606 km (0.106 R)
• M6: 2,201,333 km (0.096 R)
• M7: 2,494,544 km (0.11 R)
• M8: 5,038,307 km (0.12 R)
• M9: 7,058,476 km (0.057 R)
• M10: 13,266,190 km (0.092 R)
• M11: 14,163,029 km (0.091 R)
• M12: 17,336,299 km (0.104 R)
• M13: 18,073,068 km (0.086 R)
• M14: 22,839,855 km (0.082 R)
• M15: 23,132,319 km (0.102 R)
• M16: 36,585,805 km (0.083 R)
• M17: 39,450,006 km (0.037 R)
• M18: 45,466,084 km (0.109 R)
• M19: 50,896,337 km (0.049 R)
• M20: 52,234,041 km (0.042 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 259 - 12,345 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit