🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.52 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.85 AU - 1.21 AU

Year: 382 Days

Day: 15.4 Hours

Environment

Temp: 39 °C

Axial Tilt: 24.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.1

Radius: 1.04

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 2.9 AU - 3.68 AU

Year: 2180 Days

Day: 39.8 Hours

Environment

Temp: -116 °C

Axial Tilt: 31.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 7.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 997.7

Radius: 14.2

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 6.81 AU - 7.91 AU

Year: 7293 Days

Day: 8.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 81,982,951 km

• M1: 176,675 km (0.114 R)
• M2: 618,438 km (0.093 R)
• M3: 1,586,635 km (0.067 R)
• M4: 2,088,835 km (0.042 R)
• M5: 2,620,655 km (0.077 R)
• M6: 3,067,804 km (0.094 R)
• M7: 4,965,303 km (0.119 R)
• M8: 8,999,658 km (0.106 R)
• M9: 9,694,690 km (0.073 R)
• M10: 12,385,208 km (0.069 R)
• M11: 14,832,330 km (0.111 R)
• M12: 15,737,247 km (0.082 R)
• M13: 16,541,934 km (0.097 R)
• M14: 17,515,367 km (0.094 R)
• M15: 18,088,477 km (0.118 R)
• M16: 19,121,600 km (0.028 R)
• M17: 22,290,681 km (0.082 R)
• M18: 24,618,125 km (0.052 R)
• M19: 31,400,144 km (0.049 R)
• M20: 33,875,391 km (0.06 R)
• M21: 35,104,188 km (0.034 R)
• M22: 38,126,214 km (0.105 R)
• M23: 38,968,600 km (0.072 R)
• M24: 43,237,973 km (0.068 R)
• M25: 44,022,465 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 8.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.8

Radius: 10

Gravity: 5.8 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 7.61 AU - 9.77 AU

Year: 9357 Days

Day: 5.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 81,982,951 km

• M1: 124,465 km (0.09 R)
• M2: 554,260 km (0.089 R)
• M3: 1,179,280 km (0.064 R)
• M4: 1,794,426 km (0.114 R)
• M5: 3,467,978 km (0.115 R)
• M6: 5,244,004 km (0.091 R)
• M7: 8,519,599 km (0.119 R)
• M8: 11,146,388 km (0.088 R)
• M9: 12,222,744 km (0.09 R)
• M10: 13,723,809 km (0.102 R)
• M11: 14,209,554 km (0.055 R)
• M12: 14,832,629 km (0.088 R)
• M13: 16,674,627 km (0.102 R)
• M14: 19,563,662 km (0.077 R)
• M15: 22,435,342 km (0.082 R)
• M16: 28,117,069 km (0.091 R)
• M17: 38,870,314 km (0.039 R)

Planet 5 - Gas Giant

Semi-Major Axis: 9.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 211.6

Radius: 10.9

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 8.34 AU - 11.36 AU

Year: 11291 Days

Day: 12.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 81,982,951 km

• M1: 135,536 km (0.065 R)
• M2: 980,315 km (0.111 R)
• M3: 1,487,003 km (0.062 R)
• M4: 2,132,817 km (0.107 R)
• M5: 2,637,111 km (0.105 R)
• M6: 3,886,553 km (0.101 R)
• M7: 4,972,035 km (0.077 R)
• M8: 5,708,206 km (0.094 R)
• M9: 7,035,289 km (0.041 R)
• M10: 8,001,841 km (0.09 R)
• M11: 8,517,355 km (0.115 R)
• M12: 9,440,074 km (0.099 R)
• M13: 11,633,179 km (0.115 R)
• M14: 12,191,778 km (0.093 R)
• M15: 13,639,287 km (0.037 R)
• M16: 16,872,695 km (0.094 R)
• M17: 20,584,817 km (0.051 R)
• M18: 21,102,874 km (0.101 R)
• M19: 25,820,592 km (0.07 R)
• M20: 28,015,941 km (0.052 R)
• M21: 30,715,285 km (0.051 R)
• M22: 32,375,822 km (0.05 R)
• M23: 33,380,072 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 10.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 786.3

Radius: 9.1

Gravity: 9.5 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 8.56 AU - 12.1 AU

Year: 12127 Days

Day: 14.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 81,982,951 km

• M1: 113,096 km (0.067 R)
• M2: 611,107 km (0.118 R)
• M3: 1,024,745 km (0.112 R)
• M4: 1,310,777 km (0.077 R)
• M5: 1,777,372 km (0.05 R)
• M6: 2,273,738 km (0.116 R)
• M7: 2,975,053 km (0.091 R)
• M8: 3,981,697 km (0.105 R)
• M9: 4,363,321 km (0.111 R)
• M10: 5,373,107 km (0.109 R)
• M11: 12,477,958 km (0.098 R)
• M12: 15,397,361 km (0.091 R)
• M13: 16,340,276 km (0.072 R)
• M14: 18,824,798 km (0.066 R)
• M15: 20,071,846 km (0.1 R)
• M16: 22,089,622 km (0.099 R)
• M17: 26,422,126 km (0.096 R)
• M18: 27,039,516 km (0.037 R)
• M19: 29,167,097 km (0.033 R)
• M20: 30,159,978 km (0.105 R)
• M21: 30,721,269 km (0.107 R)
• M22: 35,839,311 km (0.092 R)
• M23: 44,756,541 km (0.082 R)
• M24: 46,076,743 km (0.063 R)
• M25: 46,522,544 km (0.074 R)
• M26: 48,948,573 km (0.107 R)
• M27: 52,259,323 km (0.032 R)
• M28: 54,216,662 km (0.087 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 830.9

Radius: 13.2

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 8.95 AU - 12.19 AU

Year: 12552 Days

Day: 9.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 81,982,951 km

• M1: 167,699 km (0.077 R)
• M2: 822,040 km (0.103 R)
• M3: 1,765,704 km (0.061 R)
• M4: 2,238,283 km (0.054 R)
• M5: 2,817,975 km (0.098 R)
• M6: 4,342,826 km (0.092 R)
• M7: 4,979,814 km (0.109 R)
• M8: 5,426,663 km (0.087 R)
• M9: 7,315,186 km (0.105 R)
• M10: 9,146,115 km (0.09 R)
• M11: 11,265,468 km (0.111 R)
• M12: 11,797,886 km (0.076 R)
• M13: 12,976,867 km (0.099 R)
• M14: 13,562,094 km (0.1 R)
• M15: 16,155,523 km (0.115 R)
• M16: 16,833,201 km (0.116 R)
• M17: 19,566,055 km (0.105 R)
• M18: 20,163,549 km (0.111 R)
• M19: 22,956,541 km (0.077 R)
• M20: 28,422,099 km (0.048 R)
• M21: 30,194,685 km (0.078 R)
• M22: 34,946,960 km (0.102 R)
• M23: 39,090,821 km (0.062 R)
• M24: 40,450,217 km (0.12 R)
• M25: 51,182,817 km (0.117 R)
• M26: 53,138,660 km (0.09 R)
• M27: 54,469,931 km (0.057 R)
• M28: 55,823,193 km (0.112 R)
• M29: 57,720,543 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 343.3

Radius: 3.9

Gravity: 22.57 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 16.27 AU - 22.85 AU

Year: 31597 Days

Day: 22.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 81,982,951 km

• M1: 48,470 km (0.032 R)
• M2: 179,667 km (0.084 R)
• M3: 510,578 km (0.095 R)
• M4: 704,008 km (0.054 R)
• M5: 874,250 km (0.069 R)
• M6: 3,531,407 km (0.062 R)
• M7: 4,615,842 km (0.096 R)
• M8: 9,747,199 km (0.071 R)
• M9: 10,413,657 km (0.099 R)
• M10: 14,283,904 km (0.056 R)
• M11: 15,788,110 km (0.106 R)
• M12: 18,373,012 km (0.058 R)
• M13: 32,185,084 km (0.103 R)
• M14: 42,949,848 km (0.08 R)
• M15: 49,835,539 km (0.099 R)
• M16: 54,002,587 km (0.079 R)
• M17: 71,412,040 km (0.072 R)
• M18: 73,220,528 km (0.087 R)
• M19: 75,291,412 km (0.093 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 486 - 17,834 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit