🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.43 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.07

Radius: 1.03

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.67 AU - 1.05 AU

Year: 296 Days

Day: 28.5 Hours

Environment

Temp: 138 °C

Axial Tilt: 32.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.84

Radius: 0.93

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.43 AU - 2.37 AU

Year: 971 Days

Day: 43.3 Hours

Environment

Temp: -67 °C

Axial Tilt: 37.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.48 AU - 2.32 AU

Year: 971 Days

Day: 38.2 Hours

Environment

Temp: -75 °C

Axial Tilt: 16.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 94,386,307 km

• M1: 256,411 km (0.057 R)
• M2: 312,061 km (0.102 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.24

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 1.49 AU - 2.41 AU

Year: 1010 Days

Day: 39.8 Hours

Environment

Temp: -61 °C

Axial Tilt: 20.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 94,386,307 km

• M1: 699,968 km (0.115 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 2.12 AU - 3.02 AU

Year: 1528 Days

Day: 15.9 Hours

Environment

Temp: -96 °C

Axial Tilt: 22.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 2.93 AU - 3.09 AU

Year: 1937 Days

Day: 33.3 Hours

Environment

Temp: -115 °C

Axial Tilt: 31.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 5.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.7

Radius: 14.8

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 4.85 AU - 6.87 AU

Year: 5261 Days

Day: 7.8 Hours

Environment

Temp: -156 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 94,386,307 km

• M1: 185,651 km (0.095 R)
• M2: 991,983 km (0.11 R)
• M3: 1,839,755 km (0.104 R)
• M4: 2,384,440 km (0.059 R)
• M5: 3,259,588 km (0.061 R)
• M6: 3,784,527 km (0.052 R)
• M7: 4,625,716 km (0.119 R)
• M8: 5,409,609 km (0.102 R)
• M9: 6,118,403 km (0.105 R)
• M10: 7,243,379 km (0.102 R)
• M11: 8,302,532 km (0.07 R)
• M12: 10,917,952 km (0.054 R)
• M13: 12,675,727 km (0.094 R)
• M14: 13,705,708 km (0.102 R)
• M15: 17,002,845 km (0.115 R)
• M16: 17,654,793 km (0.118 R)
• M17: 20,068,405 km (0.076 R)
• M18: 21,618,089 km (0.038 R)
• M19: 28,621,364 km (0.099 R)
• M20: 31,743,322 km (0.085 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.5

Radius: 10.2

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 8.04 AU - 13.14 AU

Year: 12781 Days

Day: 11.9 Hours

Environment

Temp: -170 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 94,386,307 km

• M1: 130,150 km (0.083 R)
• M2: 766,539 km (0.057 R)
• M3: 1,326,185 km (0.092 R)
• M4: 1,767,050 km (0.081 R)
• M5: 2,125,487 km (0.066 R)
• M6: 2,493,647 km (0.039 R)
• M7: 4,503,195 km (0.06 R)
• M8: 6,247,357 km (0.083 R)
• M9: 9,283,595 km (0.07 R)
• M10: 13,616,997 km (0.09 R)
• M11: 19,138,804 km (0.1 R)
• M12: 20,090,695 km (0.064 R)
• M13: 20,824,921 km (0.11 R)
• M14: 22,782,709 km (0.069 R)
• M15: 32,066,902 km (0.108 R)
• M16: 35,020,413 km (0.111 R)
• M17: 47,067,230 km (0.069 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 921.5

Radius: 8

Gravity: 14.4 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 15.67 AU - 16.41 AU

Year: 23824 Days

Day: 20.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 94,386,307 km

• M1: 102,325 km (0.104 R)
• M2: 411,394 km (0.114 R)
• M3: 736,022 km (0.062 R)
• M4: 1,590,525 km (0.109 R)
• M5: 2,259,227 km (0.078 R)
• M6: 2,619,908 km (0.038 R)
• M7: 4,914,290 km (0.085 R)
• M8: 5,273,175 km (0.061 R)
• M9: 10,140,641 km (0.09 R)
• M10: 14,136,700 km (0.119 R)
• M11: 18,782,910 km (0.114 R)
• M12: 20,262,433 km (0.108 R)
• M13: 22,031,428 km (0.107 R)
• M14: 22,570,728 km (0.111 R)
• M15: 24,932,280 km (0.047 R)
• M16: 27,083,498 km (0.105 R)
• M17: 34,999,469 km (0.085 R)
• M18: 43,649,667 km (0.096 R)
• M19: 47,474,884 km (0.089 R)
• M20: 47,833,321 km (0.066 R)
• M21: 54,991,728 km (0.073 R)
• M22: 56,183,425 km (0.098 R)
• M23: 58,207,933 km (0.113 R)
• M24: 59,031,170 km (0.119 R)
• M25: 60,071,175 km (0.039 R)
• M26: 60,911,915 km (0.096 R)
• M27: 67,695,280 km (0.067 R)
• M28: 81,964,075 km (0.09 R)
• M29: 89,932,555 km (0.046 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 273 - 17,152 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit