🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 5

Radius: 1.9

Gravity: 1.39 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.69 AU - 0.71 AU

Year: 225 Days

Day: 13.6 Hours

Environment

Temp: 89 °C

Axial Tilt: 21.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 1.55 AU - 1.99 AU

Year: 907 Days

Day: 31.8 Hours

Environment

Temp: -76 °C

Axial Tilt: 5.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.67 AU - 2.03 AU

Year: 969 Days

Day: 35.2 Hours

Environment

Temp: -82 °C

Axial Tilt: 95.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.72

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.51 AU - 3.19 AU

Year: 1852 Days

Day: 44.3 Hours

Environment

Temp: -115 °C

Axial Tilt: 19.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,520,341 km

• M1: 2,464,326 km (0.064 R)

Asteroid Belt

Center: 6.66 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 10.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 833.3

Radius: 8.5

Gravity: 11.53 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 10.13 AU - 10.79 AU

Year: 13025 Days

Day: 14.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 37,520,341 km

• M1: 109,057 km (0.098 R)
• M2: 969,095 km (0.111 R)
• M3: 1,834,219 km (0.065 R)
• M4: 2,375,614 km (0.058 R)
• M5: 3,448,530 km (0.058 R)
• M6: 3,747,277 km (0.079 R)
• M7: 4,304,380 km (0.11 R)
• M8: 5,224,706 km (0.086 R)
• M9: 5,583,441 km (0.052 R)
• M10: 7,720,746 km (0.06 R)
• M11: 10,241,321 km (0.107 R)
• M12: 11,035,237 km (0.057 R)
• M13: 12,681,112 km (0.042 R)
• M14: 13,396,489 km (0.118 R)
• M15: 14,069,979 km (0.103 R)
• M16: 15,852,138 km (0.116 R)
• M17: 18,346,384 km (0.092 R)
• M18: 20,031,604 km (0.116 R)
• M19: 20,468,579 km (0.067 R)
• M20: 23,513,793 km (0.085 R)
• M21: 26,848,180 km (0.071 R)
• M22: 30,715,734 km (0.065 R)
• M23: 33,084,467 km (0.064 R)
• M24: 33,572,455 km (0.117 R)
• M25: 35,318,262 km (0.113 R)
• M26: 35,956,147 km (0.103 R)
• M27: 36,861,963 km (0.087 R)
• M28: 38,719,370 km (0.096 R)
• M29: 39,945,923 km (0.092 R)
• M30: 41,479,750 km (0.068 R)
• M31: 42,189,891 km (0.074 R)
• M32: 44,221,131 km (0.086 R)
• M33: 44,516,586 km (0.12 R)
• M34: 50,866,717 km (0.096 R)
• M35: 53,166,335 km (0.092 R)
• M36: 54,510,921 km (0.078 R)
• M37: 55,021,050 km (0.063 R)
• M38: 56,918,399 km (0.116 R)

Planet 6 - Ice Giant

Semi-Major Axis: 12.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 91.9

Radius: 5.2

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 12.56 AU - 13.18 AU

Year: 17776 Days

Day: 17.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 37,520,341 km

• M1: 117,883 km (0.111 R)
• M2: 2,417,202 km (0.067 R)
• M3: 3,678,612 km (0.099 R)
• M4: 6,012,189 km (0.097 R)
• M5: 10,398,249 km (0.088 R)
• M6: 13,536,513 km (0.087 R)
• M7: 14,688,865 km (0.09 R)
• M8: 15,905,246 km (0.113 R)
• M9: 20,394,528 km (0.083 R)
• M10: 30,784,399 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 473.6

Radius: 3.8

Gravity: 32.8 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 16.36 AU - 18.72 AU

Year: 28282 Days

Day: 20.9 Hours

Environment

Temp: -212 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 37,520,341 km

• M1: 47,722 km (0.11 R)
• M2: 176,077 km (0.098 R)
• M3: 310,864 km (0.1 R)
• M4: 809,624 km (0.056 R)
• M5: 1,132,755 km (0.115 R)
• M6: 1,926,970 km (0.12 R)
• M7: 2,902,049 km (0.081 R)
• M8: 3,147,390 km (0.056 R)
• M9: 3,347,701 km (0.057 R)
• M10: 3,586,908 km (0.117 R)
• M11: 4,732,678 km (0.07 R)
• M12: 5,189,550 km (0.071 R)
• M13: 5,886,078 km (0.089 R)
• M14: 6,279,071 km (0.059 R)
• M15: 6,550,592 km (0.111 R)
• M16: 9,012,374 km (0.079 R)
• M17: 11,484,629 km (0.026 R)
• M18: 12,166,645 km (0.043 R)
• M19: 12,875,141 km (0.092 R)
• M20: 13,166,109 km (0.06 R)
• M21: 13,685,812 km (0.116 R)
• M22: 13,988,897 km (0.053 R)
• M23: 14,608,531 km (0.114 R)
• M24: 14,845,494 km (0.109 R)
• M25: 16,069,055 km (0.083 R)
• M26: 19,182,187 km (0.109 R)
• M27: 20,237,899 km (0.043 R)
• M28: 21,841,738 km (0.091 R)
• M29: 22,780,016 km (0.083 R)
• M30: 30,496,872 km (0.075 R)
• M31: 31,667,924 km (0.089 R)
• M32: 35,218,780 km (0.113 R)
• M33: 39,941,734 km (0.08 R)
• M34: 42,775,267 km (0.068 R)
• M35: 43,260,263 km (0.08 R)
• M36: 48,138,351 km (0.103 R)
• M37: 51,891,013 km (0.118 R)
• M38: 54,687,746 km (0.115 R)
• M39: 56,413,207 km (0.109 R)
• M40: 60,174,098 km (0.04 R)
• M41: 61,600,813 km (0.103 R)
• M42: 68,190,449 km (0.092 R)
• M43: 76,651,555 km (0.115 R)
• M44: 80,027,231 km (0.086 R)
• M45: 80,271,973 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 39.3

Radius: 6

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 15.17 AU - 20.43 AU

Year: 28913 Days

Day: 15.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 37,520,341 km

• M1: 74,949 km (0.08 R)
• M2: 352,303 km (0.054 R)
• M3: 732,730 km (0.054 R)
• M4: 1,200,972 km (0.072 R)
• M5: 1,507,797 km (0.044 R)
• M6: 2,382,346 km (0.117 R)
• M7: 2,969,518 km (0.094 R)
• M8: 3,839,579 km (0.075 R)
• M9: 4,113,193 km (0.116 R)
• M10: 4,426,302 km (0.098 R)
• M11: 7,418,558 km (0.059 R)
• M12: 7,843,716 km (0.089 R)
• M13: 8,042,232 km (0.112 R)
• M14: 9,304,688 km (0.082 R)
• M15: 13,533,521 km (0.12 R)
• M16: 26,472,690 km (0.065 R)
• M17: 27,554,881 km (0.108 R)
• M18: 28,014,445 km (0.113 R)
• M19: 30,879,544 km (0.09 R)
• M20: 35,969,462 km (0.092 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 455 - 16,442 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit