🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.82

Radius: 0.92

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.52 AU - 0.56 AU

Year: 146 Days

Day: 16.2 Hours

Environment

Temp: 200 °C

Axial Tilt: 0.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.44 AU - 0.64 AU

Year: 146 Days

Day: 22.5 Hours

Environment

Temp: 246 °C

Axial Tilt: 3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.68

Radius: 0.86

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 0.49 AU - 0.61 AU

Year: 150 Days

Day: 19.5 Hours

Environment

Temp: 149 °C

Axial Tilt: 0.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.77 AU - 0.81 AU

Year: 259 Days

Day: 34.2 Hours

Environment

Temp: 113 °C

Axial Tilt: 44.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 5 - Terrestrial

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.44

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.91 AU - 2.03 AU

Year: 1020 Days

Day: 46.3 Hours

Environment

Temp: -60 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 79,667,829 km

• M1: 670,049 km (0.116 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 1.82 AU - 2.74 AU

Year: 1270 Days

Day: 37.5 Hours

Environment

Temp: -77 °C

Axial Tilt: 28.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.07 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 7.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 198.8

Radius: 12.7

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 6.7 AU - 9.02 AU

Year: 8130 Days

Day: 5.9 Hours

Environment

Temp: -171 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 79,667,829 km

• M1: 164,558 km (0.089 R)
• M2: 582,235 km (0.109 R)
• M3: 1,550,283 km (0.068 R)
• M4: 1,970,354 km (0.036 R)
• M5: 2,373,969 km (0.09 R)
• M6: 2,833,384 km (0.088 R)
• M7: 4,534,461 km (0.116 R)
• M8: 5,036,960 km (0.067 R)
• M9: 5,660,933 km (0.109 R)
• M10: 6,275,032 km (0.067 R)
• M11: 8,915,584 km (0.067 R)
• M12: 10,289,641 km (0.06 R)
• M13: 13,710,046 km (0.06 R)
• M14: 14,126,078 km (0.063 R)
• M15: 14,550,338 km (0.115 R)
• M16: 16,103,014 km (0.119 R)
• M17: 20,803,229 km (0.055 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484

Radius: 12.5

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 7.99 AU - 8.21 AU

Year: 8506 Days

Day: 6.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 79,667,829 km

• M1: 155,432 km (0.075 R)
• M2: 1,076,805 km (0.115 R)
• M3: 1,722,919 km (0.117 R)
• M4: 2,507,859 km (0.094 R)
• M5: 2,943,189 km (0.058 R)
• M6: 3,870,845 km (0.049 R)
• M7: 4,729,088 km (0.112 R)
• M8: 5,248,641 km (0.08 R)
• M9: 5,710,450 km (0.112 R)
• M10: 7,039,926 km (0.116 R)
• M11: 8,400,220 km (0.073 R)
• M12: 9,034,066 km (0.113 R)
• M13: 10,541,414 km (0.1 R)
• M14: 14,461,776 km (0.075 R)
• M15: 15,685,636 km (0.107 R)
• M16: 20,141,558 km (0.094 R)
• M17: 22,218,126 km (0.103 R)
• M18: 24,349,148 km (0.073 R)
• M19: 27,337,216 km (0.114 R)
• M20: 28,447,830 km (0.092 R)
• M21: 31,657,004 km (0.099 R)
• M22: 32,061,666 km (0.092 R)
• M23: 33,296,596 km (0.1 R)
• M24: 35,751,946 km (0.039 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 82.9

Radius: 4.3

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 11.53 AU - 17.55 AU

Year: 20456 Days

Day: 15.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 20.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 79,667,829 km

• M1: 53,556 km (0.109 R)
• M2: 635,492 km (0.085 R)
• M3: 771,626 km (0.084 R)
• M4: 2,550,644 km (0.102 R)
• M5: 8,253,464 km (0.111 R)
• M6: 16,538,643 km (0.106 R)
• M7: 22,828,785 km (0.066 R)
• M8: 23,567,050 km (0.118 R)
• M9: 34,552,620 km (0.088 R)

Planet 10 - Ice Giant

Semi-Major Axis: 16.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 489

Radius: 4.1

Gravity: 29.09 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 16.13 AU - 17.43 AU

Year: 25361 Days

Day: 20.2 Hours

Environment

Temp: -192 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 79,667,829 km

• M1: 51,312 km (0.096 R)
• M2: 274,213 km (0.111 R)
• M3: 641,326 km (0.054 R)
• M4: 1,688,810 km (0.111 R)
• M5: 1,855,462 km (0.099 R)
• M6: 2,053,680 km (0.103 R)
• M7: 2,243,968 km (0.111 R)
• M8: 3,098,172 km (0.109 R)
• M9: 3,582,869 km (0.117 R)
• M10: 4,737,615 km (0.117 R)
• M11: 5,108,318 km (0.074 R)
• M12: 5,339,896 km (0.082 R)
• M13: 6,604,447 km (0.097 R)
• M14: 7,953,221 km (0.061 R)
• M15: 9,190,246 km (0.107 R)
• M16: 10,989,460 km (0.072 R)
• M17: 11,310,497 km (0.115 R)
• M18: 11,637,817 km (0.067 R)
• M19: 13,297,306 km (0.098 R)
• M20: 14,107,977 km (0.096 R)
• M21: 14,795,529 km (0.087 R)
• M22: 14,951,260 km (0.119 R)
• M23: 20,149,188 km (0.087 R)
• M24: 21,915,789 km (0.095 R)
• M25: 23,044,654 km (0.079 R)
• M26: 26,205,807 km (0.112 R)
• M27: 30,140,829 km (0.084 R)
• M28: 30,769,440 km (0.119 R)
• M29: 33,371,395 km (0.05 R)
• M30: 33,773,814 km (0.112 R)
• M31: 35,975,446 km (0.035 R)
• M32: 36,540,477 km (0.066 R)
• M33: 38,711,890 km (0.047 R)
• M34: 48,945,731 km (0.068 R)
• M35: 54,678,471 km (0.109 R)
• M36: 58,869,006 km (0.117 R)
• M37: 59,260,205 km (0.085 R)
• M38: 68,097,100 km (0.104 R)
• M39: 71,819,843 km (0.116 R)
• M40: 75,676,028 km (0.103 R)
• M41: 76,370,461 km (0.12 R)
• M42: 79,667,897 km (0.086 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 266 - 19,222 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit