🌌 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: 0.17

Radius: 0.49

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.65 AU - 0.65 AU

Year: 338 Days

Day: 28.4 Hours

Environment

Temp: -127 °C

Axial Tilt: 31.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.4

Radius: 12.3

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.67 AU - 1.03 AU

Year: 506 Days

Day: 13.7 Hours

Environment

Temp: -154 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,188,764 km

• M1: 153,039 km (0.083 R)
• M2: 977,323 km (0.101 R)
• M3: 1,831,826 km (0.104 R)
• M4: 2,308,146 km (0.112 R)
• M5: 2,744,373 km (0.081 R)
• M6: 3,168,483 km (0.091 R)
• M7: 3,673,226 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 311.6

Radius: 8.1

Gravity: 4.75 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.91 AU - 1.45 AU

Year: 828 Days

Day: 10 Hours

Environment

Temp: -170 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 52,188,764 km

• M1: 100,979 km (0.072 R)
• M2: 509,979 km (0.12 R)
• M3: 763,697 km (0.1 R)
• M4: 1,048,681 km (0.119 R)
• M5: 1,325,587 km (0.096 R)
• M6: 1,737,280 km (0.1 R)
• M7: 2,066,545 km (0.098 R)
• M8: 2,437,249 km (0.119 R)
• M9: 3,129,737 km (0.099 R)
• M10: 3,477,103 km (0.08 R)
• M11: 3,740,695 km (0.116 R)
• M12: 4,161,364 km (0.119 R)
• M13: 4,520,399 km (0.054 R)
• M14: 5,352,163 km (0.107 R)
• M15: 5,905,526 km (0.115 R)
• M16: 6,379,003 km (0.118 R)
• M17: 6,755,541 km (0.059 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 784

Radius: 14.8

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 2.04 AU - 2.16 AU

Year: 1965 Days

Day: 5.7 Hours

Environment

Temp: -186 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 52,188,764 km

• M1: 186,100 km (0.102 R)
• M2: 754,123 km (0.083 R)
• M3: 1,322,445 km (0.112 R)
• M4: 1,783,955 km (0.081 R)
• M5: 2,736,444 km (0.102 R)
• M6: 3,557,138 km (0.1 R)
• M7: 4,159,569 km (0.111 R)
• M8: 5,180,425 km (0.108 R)
• M9: 5,835,514 km (0.12 R)
• M10: 6,362,547 km (0.047 R)
• M11: 6,894,218 km (0.041 R)
• M12: 10,297,420 km (0.12 R)
• M13: 10,808,596 km (0.099 R)
• M14: 11,298,230 km (0.099 R)
• M15: 12,362,918 km (0.103 R)
• M16: 13,109,261 km (0.11 R)
• M17: 14,510,096 km (0.089 R)
• M18: 16,696,020 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 673.7

Radius: 12.4

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 2.36 AU - 2.78 AU

Year: 2660 Days

Day: 5.5 Hours

Environment

Temp: -201 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,188,764 km

• M1: 155,432 km (0.049 R)
• M2: 1,137,093 km (0.059 R)
• M3: 1,593,217 km (0.052 R)
• M4: 2,172,311 km (0.112 R)
• M5: 3,951,329 km (0.118 R)
• M6: 4,660,422 km (0.062 R)
• M7: 5,452,543 km (0.091 R)
• M8: 7,795,695 km (0.065 R)
• M9: 8,946,701 km (0.116 R)
• M10: 9,835,910 km (0.078 R)
• M11: 10,666,478 km (0.102 R)
• M12: 13,530,978 km (0.073 R)
• M13: 14,558,416 km (0.063 R)
• M14: 19,424,835 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 605.7

Radius: 13.4

Gravity: 3.37 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 3.01 AU - 4.43 AU

Year: 4633 Days

Day: 7 Hours

Environment

Temp: -209 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,188,764 km

• M1: 166,652 km (0.113 R)
• M2: 636,838 km (0.056 R)
• M3: 1,089,222 km (0.113 R)
• M4: 1,668,914 km (0.103 R)
• M5: 2,166,177 km (0.101 R)
• M6: 3,309,404 km (0.088 R)
• M7: 3,777,047 km (0.045 R)
• M8: 4,453,828 km (0.097 R)
• M9: 6,259,624 km (0.093 R)
• M10: 7,966,535 km (0.059 R)
• M11: 13,562,992 km (0.092 R)
• M12: 15,097,118 km (0.067 R)
• M13: 19,992,708 km (0.111 R)
• M14: 24,313,544 km (0.043 R)
• M15: 25,542,490 km (0.113 R)
• M16: 26,093,010 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.6

Radius: 14.9

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 4.95 AU - 6.15 AU

Year: 8442 Days

Day: 6.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 52,188,764 km

• M1: 187,297 km (0.084 R)
• M2: 805,734 km (0.06 R)
• M3: 2,151,666 km (0.094 R)
• M4: 3,709,429 km (0.118 R)
• M5: 4,816,752 km (0.117 R)
• M6: 5,400,034 km (0.047 R)
• M7: 7,126,244 km (0.043 R)
• M8: 9,288,681 km (0.042 R)
• M9: 9,759,466 km (0.035 R)
• M10: 11,914,124 km (0.06 R)
• M11: 12,813,058 km (0.094 R)
• M12: 18,292,977 km (0.095 R)
• M13: 19,185,777 km (0.072 R)
• M14: 21,382,024 km (0.1 R)
• M15: 21,873,752 km (0.076 R)
• M16: 22,456,884 km (0.034 R)
• M17: 27,889,681 km (0.074 R)
• M18: 28,477,002 km (0.106 R)
• M19: 34,141,076 km (0.11 R)
• M20: 39,770,145 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.54 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 340.5

Radius: 3.4

Gravity: 29.46 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 7.04 AU - 10.04 AU

Year: 16114 Days

Day: 20 Hours

Environment

Temp: -225 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 52,188,764 km

• M1: 42,336 km (0.108 R)
• M2: 316,998 km (0.111 R)
• M3: 484,996 km (0.108 R)
• M4: 605,123 km (0.106 R)
• M5: 1,023,698 km (0.109 R)
• M6: 2,002,816 km (0.08 R)
• M7: 2,183,680 km (0.11 R)
• M8: 2,770,253 km (0.095 R)
• M9: 3,455,262 km (0.109 R)
• M10: 5,151,253 km (0.109 R)
• M11: 6,405,332 km (0.107 R)
• M12: 7,416,913 km (0.096 R)
• M13: 9,750,340 km (0.05 R)
• M14: 11,305,859 km (0.102 R)
• M15: 11,995,356 km (0.061 R)
• M16: 12,590,905 km (0.107 R)
• M17: 14,898,302 km (0.099 R)
• M18: 16,656,825 km (0.053 R)
• M19: 21,866,122 km (0.086 R)
• M20: 23,205,472 km (0.12 R)
• M21: 23,941,793 km (0.095 R)
• M22: 25,364,020 km (0.049 R)
• M23: 31,393,412 km (0.094 R)
• M24: 31,504,863 km (0.109 R)
• M25: 38,822,443 km (0.047 R)
• M26: 40,780,679 km (0.085 R)
• M27: 42,803,691 km (0.114 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 491 - 13,109 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit