🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.42

Radius: 1.64

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.51 AU - 0.53 AU

Year: 143 Days

Day: 26.7 Hours

Environment

Temp: 159 °C

Axial Tilt: 25.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 52,047,279 km

• M1: 38,297 km (0.077 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.21

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.61 AU - 1.01 AU

Year: 278 Days

Day: 33.6 Hours

Environment

Temp: 79 °C

Axial Tilt: 17.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.51

Radius: 1.45

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.94 AU - 1.52 AU

Year: 519 Days

Day: 46.9 Hours

Environment

Temp: -24 °C

Axial Tilt: 35.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.15

Radius: 1.06

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 1.39 AU - 1.89 AU

Year: 800 Days

Day: 35.7 Hours

Environment

Temp: -63 °C

Axial Tilt: 26.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,047,279 km

• M1: 47,123 km (0.042 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.63

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 1.87 AU - 2.93 AU

Year: 1416 Days

Day: 23.2 Hours

Environment

Temp: -87 °C

Axial Tilt: 3.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.04

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 2.63 AU - 2.71 AU

Year: 1661 Days

Day: 26.3 Hours

Environment

Temp: -96 °C

Axial Tilt: 23.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 8.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 141.7

Radius: 13.5

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 6.7 AU - 10.44 AU

Year: 9554 Days

Day: 11.1 Hours

Environment

Temp: -175 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,047,279 km

• M1: 169,644 km (0.12 R)
• M2: 631,752 km (0.033 R)
• M3: 2,592,531 km (0.089 R)
• M4: 3,900,914 km (0.054 R)
• M5: 4,543,587 km (0.119 R)
• M6: 4,967,547 km (0.117 R)
• M7: 5,527,941 km (0.11 R)
• M8: 7,198,949 km (0.052 R)
• M9: 7,848,054 km (0.058 R)
• M10: 10,626,086 km (0.068 R)
• M11: 14,004,156 km (0.101 R)
• M12: 14,692,306 km (0.091 R)
• M13: 18,920,092 km (0.089 R)
• M14: 21,242,150 km (0.079 R)
• M15: 23,897,512 km (0.075 R)
• M16: 26,048,879 km (0.055 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 413.7

Radius: 5.2

Gravity: 15.3 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 12.13 AU - 13.77 AU

Year: 17746 Days

Day: 21.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 52,047,279 km

• M1: 65,374 km (0.091 R)
• M2: 382,671 km (0.102 R)
• M3: 560,992 km (0.073 R)
• M4: 895,044 km (0.119 R)
• M5: 1,618,799 km (0.094 R)
• M6: 1,972,298 km (0.069 R)
• M7: 2,437,697 km (0.112 R)
• M8: 3,021,129 km (0.056 R)
• M9: 3,218,149 km (0.104 R)
• M10: 3,889,844 km (0.119 R)
• M11: 6,302,708 km (0.087 R)
• M12: 9,148,807 km (0.096 R)
• M13: 10,821,312 km (0.115 R)
• M14: 12,623,966 km (0.119 R)
• M15: 13,266,788 km (0.079 R)
• M16: 13,596,352 km (0.106 R)
• M17: 14,066,688 km (0.053 R)
• M18: 14,827,842 km (0.045 R)
• M19: 15,909,285 km (0.053 R)
• M20: 20,152,030 km (0.114 R)
• M21: 22,023,051 km (0.064 R)
• M22: 23,523,966 km (0.113 R)
• M23: 25,799,050 km (0.056 R)
• M24: 26,415,842 km (0.053 R)
• M25: 38,860,440 km (0.106 R)
• M26: 44,621,903 km (0.115 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 190

Radius: 7.6

Gravity: 3.29 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 13 AU - 16.42 AU

Year: 21484 Days

Day: 19.3 Hours

Environment

Temp: -200 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 52,047,279 km

• M1: 94,695 km (0.11 R)
• M2: 966,103 km (0.112 R)
• M3: 1,718,281 km (0.11 R)
• M4: 2,012,989 km (0.106 R)
• M5: 4,489,881 km (0.05 R)
• M6: 5,522,854 km (0.113 R)
• M7: 6,058,265 km (0.118 R)
• M8: 9,614,954 km (0.059 R)
• M9: 10,983,027 km (0.101 R)
• M10: 14,230,797 km (0.084 R)
• M11: 15,372,827 km (0.109 R)
• M12: 16,072,496 km (0.114 R)
• M13: 17,235,769 km (0.092 R)
• M14: 17,535,114 km (0.115 R)
• M15: 19,892,627 km (0.11 R)
• M16: 20,976,763 km (0.084 R)
• M17: 22,012,130 km (0.12 R)
• M18: 24,184,291 km (0.119 R)
• M19: 25,709,292 km (0.106 R)
• M20: 27,398,700 km (0.108 R)
• M21: 35,257,974 km (0.087 R)
• M22: 36,350,487 km (0.113 R)
• M23: 40,024,162 km (0.095 R)
• M24: 41,212,717 km (0.028 R)
• M25: 42,697,177 km (0.091 R)
• M26: 46,780,900 km (0.105 R)
• M27: 50,047,369 km (0.045 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 402 - 17,847 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit