🌌 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: 0.36

Radius: 0.66

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.46 AU - 0.58 AU

Year: 138 Days

Day: 23.6 Hours

Environment

Temp: 178 °C

Axial Tilt: 18.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.43 AU - 0.63 AU

Year: 142 Days

Day: 45.5 Hours

Environment

Temp: 227 °C

Axial Tilt: 37.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.61 AU - 0.63 AU

Year: 180 Days

Day: 23.8 Hours

Environment

Temp: 198 °C

Axial Tilt: 36.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 3.05 AU - 3.59 AU

Year: 2232 Days

Day: 43.5 Hours

Environment

Temp: -123 °C

Axial Tilt: 8.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 54,740,898 km

• M1: 42,935 km (0.114 R)
• M2: 256,411 km (0.106 R)

Asteroid Belt

Center: 4.93 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 6.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 327.6

Radius: 11.7

Gravity: 2.39 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 4.92 AU - 8.16 AU

Year: 6171 Days

Day: 10.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 54,740,898 km

• M1: 152,889 km (0.036 R)
• M2: 542,891 km (0.117 R)
• M3: 1,170,603 km (0.101 R)
• M4: 2,933,315 km (0.047 R)
• M5: 7,296,337 km (0.114 R)
• M6: 8,346,364 km (0.086 R)
• M7: 10,064,945 km (0.097 R)
• M8: 10,443,727 km (0.034 R)
• M9: 11,230,013 km (0.091 R)
• M10: 11,683,594 km (0.07 R)
• M11: 13,520,057 km (0.099 R)
• M12: 14,453,997 km (0.114 R)
• M13: 15,045,656 km (0.108 R)
• M14: 17,575,207 km (0.092 R)
• M15: 20,375,978 km (0.096 R)
• M16: 21,533,716 km (0.096 R)
• M17: 22,022,901 km (0.091 R)
• M18: 24,733,315 km (0.093 R)
• M19: 25,580,189 km (0.061 R)
• M20: 26,129,063 km (0.089 R)

Planet 6 - Ice Giant

Semi-Major Axis: 14.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 954.8

Radius: 7.6

Gravity: 16.53 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 12.9 AU - 16.82 AU

Year: 21135 Days

Day: 24.7 Hours

Environment

Temp: -202 °C

Axial Tilt: 37 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 54,740,898 km

• M1: 95,144 km (0.077 R)
• M2: 380,128 km (0.089 R)
• M3: 898,634 km (0.107 R)
• M4: 1,470,846 km (0.04 R)
• M5: 2,544,959 km (0.068 R)
• M6: 5,121,334 km (0.109 R)
• M7: 5,482,164 km (0.106 R)
• M8: 6,390,372 km (0.071 R)
• M9: 7,245,623 km (0.076 R)
• M10: 8,894,192 km (0.087 R)
• M11: 9,654,747 km (0.099 R)
• M12: 11,371,832 km (0.08 R)
• M13: 11,986,829 km (0.079 R)
• M14: 14,353,916 km (0.114 R)
• M15: 17,104,123 km (0.119 R)
• M16: 23,512,297 km (0.09 R)
• M17: 26,469,398 km (0.074 R)
• M18: 27,548,298 km (0.101 R)
• M19: 35,789,495 km (0.076 R)
• M20: 37,256,303 km (0.076 R)
• M21: 40,939,103 km (0.066 R)
• M22: 42,218,763 km (0.096 R)
• M23: 43,195,787 km (0.095 R)
• M24: 52,117,804 km (0.094 R)
• M25: 52,865,494 km (0.064 R)
• M26: 60,533,582 km (0.108 R)
• M27: 61,775,394 km (0.075 R)
• M28: 66,255,700 km (0.106 R)
• M29: 69,360,006 km (0.098 R)
• M30: 71,176,722 km (0.107 R)
• M31: 71,866,069 km (0.09 R)
• M32: 72,328,177 km (0.07 R)
• M33: 73,491,899 km (0.102 R)
• M34: 75,856,891 km (0.062 R)
• M35: 76,096,098 km (0.062 R)
• M36: 85,306,540 km (0.096 R)
• M37: 86,084,300 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 18.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 117.8

Radius: 6.6

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 16.07 AU - 20.99 AU

Year: 29430 Days

Day: 20.1 Hours

Environment

Temp: -198 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 54,740,898 km

• M1: 82,129 km (0.091 R)
• M2: 310,116 km (0.119 R)
• M3: 738,415 km (0.104 R)
• M4: 3,502,086 km (0.118 R)
• M5: 4,219,109 km (0.077 R)
• M6: 8,688,944 km (0.107 R)
• M7: 10,473,197 km (0.111 R)
• M8: 12,306,370 km (0.063 R)
• M9: 14,477,783 km (0.058 R)
• M10: 19,234,696 km (0.094 R)
• M11: 21,170,941 km (0.111 R)
• M12: 21,696,778 km (0.117 R)
• M13: 26,020,605 km (0.07 R)
• M14: 29,345,717 km (0.08 R)
• M15: 42,922,471 km (0.12 R)
• M16: 50,899,180 km (0.112 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 360 - 13,640 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit