🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.65

Radius: 1.22

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.57 AU - 0.73 AU

Year: 344 Days

Day: 13 Hours

Environment

Temp: -137 °C

Axial Tilt: 42.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.4

Radius: 13.7

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.57 AU - 0.93 AU

Year: 426 Days

Day: 10.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 52,926,856 km

• M1: 170,392 km (0.117 R)
• M2: 609,761 km (0.113 R)
• M3: 1,174,642 km (0.115 R)
• M4: 2,120,550 km (0.111 R)
• M5: 2,580,114 km (0.079 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.6

Radius: 13.3

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.63 AU - 0.99 AU

Year: 478 Days

Day: 12.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,926,856 km

• M1: 165,455 km (0.025 R)
• M2: 697,575 km (0.032 R)
• M3: 1,255,575 km (0.115 R)
• M4: 2,015,532 km (0.113 R)
• M5: 3,851,397 km (0.111 R)
• M6: 4,876,442 km (0.07 R)
• M7: 5,754,581 km (0.071 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 163.3

Radius: 11.3

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.77 AU - 1.05 AU

Year: 569 Days

Day: 10.7 Hours

Environment

Temp: -145 °C

Axial Tilt: 133.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 52,926,856 km

• M1: 140,772 km (0.119 R)
• M2: 1,060,350 km (0.12 R)
• M3: 1,613,862 km (0.108 R)
• M4: 2,412,116 km (0.035 R)
• M5: 2,964,282 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.7

Radius: 13.8

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.01 AU - 1.17 AU

Year: 747 Days

Day: 8.6 Hours

Environment

Temp: -164 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,926,856 km

• M1: 171,589 km (0.06 R)
• M2: 606,619 km (0.093 R)
• M3: 1,299,407 km (0.079 R)
• M4: 1,946,717 km (0.114 R)
• M5: 2,421,690 km (0.111 R)
• M6: 2,859,862 km (0.075 R)
• M7: 3,441,050 km (0.079 R)
• M8: 4,173,781 km (0.053 R)
• M9: 6,843,654 km (0.111 R)
• M10: 7,310,998 km (0.115 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 458.5

Radius: 14.6

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.45 AU - 1.53 AU

Year: 1193 Days

Day: 6.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,926,856 km

• M1: 181,612 km (0.107 R)
• M2: 666,907 km (0.103 R)
• M3: 1,306,139 km (0.115 R)
• M4: 2,262,817 km (0.061 R)
• M5: 3,063,914 km (0.105 R)
• M6: 4,392,044 km (0.089 R)
• M7: 4,917,731 km (0.115 R)
• M8: 5,724,811 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 651.9

Radius: 8.6

Gravity: 8.81 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 2.18 AU - 3.2 AU

Year: 2894 Days

Day: 8.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 52,926,856 km

• M1: 107,112 km (0.107 R)
• M2: 427,551 km (0.094 R)
• M3: 766,839 km (0.111 R)
• M4: 1,287,290 km (0.112 R)
• M5: 1,704,668 km (0.111 R)
• M6: 2,065,647 km (0.093 R)
• M7: 2,926,434 km (0.072 R)
• M8: 3,392,730 km (0.063 R)
• M9: 3,769,268 km (0.032 R)
• M10: 4,257,855 km (0.038 R)
• M11: 5,141,380 km (0.099 R)
• M12: 5,613,959 km (0.07 R)
• M13: 6,142,189 km (0.064 R)
• M14: 6,588,440 km (0.082 R)
• M15: 7,735,108 km (0.112 R)
• M16: 8,289,068 km (0.04 R)
• M17: 9,294,815 km (0.104 R)
• M18: 9,734,034 km (0.116 R)
• M19: 10,034,427 km (0.117 R)
• M20: 12,934,082 km (0.062 R)
• M21: 13,297,456 km (0.102 R)
• M22: 14,770,695 km (0.118 R)
• M23: 19,069,989 km (0.104 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.4

Radius: 10.3

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.35 AU - 3.41 AU

Year: 4076 Days

Day: 10.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 52,926,856 km

• M1: 128,056 km (0.104 R)
• M2: 702,960 km (0.054 R)
• M3: 1,463,666 km (0.056 R)
• M4: 1,939,536 km (0.053 R)
• M5: 3,236,251 km (0.103 R)
• M6: 5,210,793 km (0.085 R)
• M7: 5,658,390 km (0.105 R)
• M8: 7,130,134 km (0.102 R)
• M9: 9,744,207 km (0.115 R)
• M10: 10,080,802 km (0.115 R)
• M11: 11,920,108 km (0.11 R)
• M12: 13,846,181 km (0.062 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801.1

Radius: 12.5

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 4 AU - 5.5 AU

Year: 6791 Days

Day: 14 Hours

Environment

Temp: -224 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,926,856 km

• M1: 155,731 km (0.07 R)
• M2: 830,717 km (0.079 R)
• M3: 2,014,335 km (0.105 R)
• M4: 2,624,096 km (0.098 R)
• M5: 3,310,451 km (0.112 R)
• M6: 3,768,071 km (0.115 R)
• M7: 6,481,178 km (0.116 R)
• M8: 7,466,729 km (0.091 R)
• M9: 10,828,043 km (0.045 R)
• M10: 11,896,322 km (0.08 R)
• M11: 13,485,350 km (0.1 R)
• M12: 27,093,222 km (0.102 R)
• M13: 36,509,061 km (0.115 R)
• M14: 37,635,683 km (0.079 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 535.3

Radius: 7.6

Gravity: 9.27 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 5.95 AU - 8.79 AU

Year: 13125 Days

Day: 24.4 Hours

Environment

Temp: -229 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 52,926,856 km

• M1: 94,546 km (0.037 R)
• M2: 517,160 km (0.116 R)
• M3: 780,153 km (0.065 R)
• M4: 1,423,424 km (0.066 R)
• M5: 1,874,910 km (0.041 R)
• M6: 2,321,161 km (0.074 R)
• M7: 2,684,833 km (0.119 R)
• M8: 3,816,242 km (0.115 R)
• M9: 5,203,612 km (0.119 R)
• M10: 7,695,913 km (0.101 R)
• M11: 9,273,722 km (0.101 R)
• M12: 10,243,565 km (0.11 R)
• M13: 11,055,881 km (0.031 R)
• M14: 11,620,763 km (0.088 R)
• M15: 12,204,793 km (0.066 R)
• M16: 12,443,850 km (0.104 R)
• M17: 16,270,863 km (0.085 R)
• M18: 18,371,815 km (0.111 R)
• M19: 19,325,203 km (0.077 R)
• M20: 19,568,598 km (0.072 R)
• M21: 19,978,796 km (0.099 R)
• M22: 21,764,845 km (0.089 R)
• M23: 22,116,699 km (0.107 R)
• M24: 25,262,742 km (0.118 R)
• M25: 26,341,193 km (0.083 R)
• M26: 28,800,432 km (0.072 R)
• M27: 30,303,293 km (0.057 R)
• M28: 34,169,949 km (0.115 R)
• M29: 36,221,085 km (0.117 R)
• M30: 36,964,287 km (0.098 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 299 - 13,668 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit