🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.44 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.88 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.87 AU - 0.89 AU

Year: 289 Days

Day: 14.1 Hours

Environment

Temp: 196 °C

Axial Tilt: 38.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 1.92 AU - 2.56 AU

Year: 1173 Days

Day: 17 Hours

Environment

Temp: -71 °C

Axial Tilt: 13.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.39

Radius: 0.69

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 2.15 AU - 2.45 AU

Year: 1220 Days

Day: 39.3 Hours

Environment

Temp: -64 °C

Axial Tilt: 11.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.91 AU - 2.71 AU

Year: 1228 Days

Day: 37.1 Hours

Environment

Temp: -75 °C

Axial Tilt: 3.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.68

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 3.64 AU - 4.92 AU

Year: 3098 Days

Day: 26.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 41.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 3.6 AU - 5.58 AU

Year: 3440 Days

Day: 12.8 Hours

Environment

Temp: -122 °C

Axial Tilt: 2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.54

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 3.89 AU - 5.67 AU

Year: 3656 Days

Day: 43.4 Hours

Environment

Temp: -120 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,247,716 km

• M1: 156,180 km (0.107 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.5

Radius: 13.6

Gravity: 2.07 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 7.01 AU - 10.51 AU

Year: 9071 Days

Day: 5.4 Hours

Environment

Temp: -172 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 37,247,716 km

• M1: 169,345 km (0.11 R)
• M2: 599,738 km (0.118 R)
• M3: 1,163,123 km (0.084 R)
• M4: 1,628,971 km (0.111 R)
• M5: 2,079,710 km (0.105 R)
• M6: 3,116,722 km (0.077 R)
• M7: 6,327,990 km (0.086 R)
• M8: 7,204,933 km (0.117 R)
• M9: 8,281,589 km (0.073 R)
• M10: 10,467,812 km (0.066 R)
• M11: 11,491,959 km (0.066 R)
• M12: 14,668,819 km (0.1 R)
• M13: 15,701,194 km (0.063 R)
• M14: 16,203,544 km (0.035 R)
• M15: 17,306,678 km (0.076 R)
• M16: 23,914,865 km (0.079 R)
• M17: 26,299,156 km (0.086 R)
• M18: 28,280,580 km (0.062 R)
• M19: 28,744,483 km (0.072 R)
• M20: 29,592,254 km (0.118 R)
• M21: 30,166,710 km (0.102 R)
• M22: 30,846,183 km (0.107 R)
• M23: 33,459,957 km (0.08 R)
• M24: 35,139,941 km (0.105 R)
• M25: 36,765,472 km (0.088 R)

Planet 9 - Ice Giant

Semi-Major Axis: 20.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 164.1

Radius: 3.8

Gravity: 11.36 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 16.47 AU - 23.79 AU

Year: 31597 Days

Day: 19.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 37,247,716 km

• M1: 49,517 km (0.108 R)
• M2: 175,329 km (0.09 R)
• M3: 575,204 km (0.109 R)
• M4: 748,139 km (0.047 R)
• M5: 1,072,318 km (0.034 R)
• M6: 1,708,408 km (0.111 R)
• M7: 2,840,864 km (0.116 R)
• M8: 3,111,037 km (0.098 R)
• M9: 4,929,848 km (0.112 R)
• M10: 6,363,744 km (0.068 R)
• M11: 12,739,904 km (0.118 R)
• M12: 14,729,855 km (0.049 R)
• M13: 24,965,491 km (0.062 R)
• M14: 25,481,005 km (0.111 R)
• M15: 30,796,367 km (0.098 R)
• M16: 32,966,135 km (0.057 R)
• M17: 34,978,525 km (0.082 R)
• M18: 44,899,707 km (0.04 R)
• M19: 60,519,370 km (0.068 R)

Planet 10 - Ice Giant

Semi-Major Axis: 20.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 29.1

Radius: 3.6

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 16.14 AU - 25.5 AU

Year: 33235 Days

Day: 17.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,247,716 km

• M1: 47,722 km (0.088 R)
• M2: 626,067 km (0.096 R)
• M3: 3,932,030 km (0.096 R)
• M4: 6,133,662 km (0.064 R)
• M5: 6,508,405 km (0.101 R)
• M6: 10,595,269 km (0.119 R)
• M7: 14,877,209 km (0.119 R)
• M8: 16,055,741 km (0.075 R)
• M9: 16,247,376 km (0.04 R)
• M10: 18,179,133 km (0.092 R)
• M11: 22,731,097 km (0.081 R)
• M12: 26,895,453 km (0.071 R)
• M13: 27,437,895 km (0.112 R)

Kuiper Belt

Range: 31.4 - 48.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 257 - 11,233 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit