🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.72 AU - 0.76 AU

Year: 241 Days

Day: 20.8 Hours

Environment

Temp: 105 °C

Axial Tilt: 5.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 71,686,189 km

• M1: 37,998 km (0.115 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 1.09 AU - 1.11 AU

Year: 437 Days

Day: 33.3 Hours

Environment

Temp: 3 °C

Axial Tilt: 10.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.88 AU - 1.38 AU

Year: 455 Days

Day: 38.3 Hours

Environment

Temp: 5 °C

Axial Tilt: 0.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.23

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 1.43 AU - 2.37 AU

Year: 992 Days

Day: 29.2 Hours

Environment

Temp: -80 °C

Axial Tilt: 36.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 71,686,189 km

• M1: 43,533 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 82.7

Radius: 13.9

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 4.85 AU - 5.11 AU

Year: 4209 Days

Day: 11 Hours

Environment

Temp: -144 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,686,189 km

• M1: 175,478 km (0.062 R)
• M2: 1,188,106 km (0.111 R)
• M3: 2,240,827 km (0.109 R)
• M4: 3,080,968 km (0.052 R)
• M5: 3,948,486 km (0.063 R)
• M6: 4,619,732 km (0.062 R)
• M7: 9,842,642 km (0.071 R)
• M8: 10,873,072 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 283.8

Radius: 9.8

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 5.4 AU - 6.04 AU

Year: 5181 Days

Day: 10.8 Hours

Environment

Temp: -151 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 71,686,189 km

• M1: 122,072 km (0.085 R)
• M2: 873,203 km (0.066 R)
• M3: 1,273,975 km (0.11 R)
• M4: 1,725,462 km (0.1 R)
• M5: 3,497,149 km (0.114 R)
• M6: 9,375,897 km (0.09 R)
• M7: 10,590,033 km (0.091 R)
• M8: 12,626,359 km (0.103 R)
• M9: 13,138,283 km (0.053 R)
• M10: 15,221,284 km (0.12 R)
• M11: 15,961,943 km (0.071 R)
• M12: 21,703,210 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 340.8

Radius: 11.4

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 6.55 AU - 8.61 AU

Year: 7904 Days

Day: 12.3 Hours

Environment

Temp: -174 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 71,686,189 km

• M1: 141,968 km (0.115 R)
• M2: 716,574 km (0.12 R)
• M3: 1,086,380 km (0.107 R)
• M4: 1,504,207 km (0.116 R)
• M5: 1,986,660 km (0.055 R)
• M6: 3,029,058 km (0.079 R)
• M7: 3,541,131 km (0.058 R)
• M8: 6,034,479 km (0.111 R)
• M9: 6,481,926 km (0.079 R)
• M10: 11,614,629 km (0.058 R)
• M11: 14,054,421 km (0.098 R)
• M12: 16,631,394 km (0.106 R)
• M13: 18,228,201 km (0.11 R)
• M14: 20,919,766 km (0.092 R)
• M15: 22,398,092 km (0.104 R)
• M16: 23,551,642 km (0.11 R)
• M17: 23,944,934 km (0.113 R)
• M18: 26,992,393 km (0.12 R)
• M19: 31,604,196 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 605.9

Radius: 10.5

Gravity: 5.5 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 7.95 AU - 8.59 AU

Year: 9008 Days

Day: 9.3 Hours

Environment

Temp: -175 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 71,686,189 km

• M1: 131,796 km (0.106 R)
• M2: 611,406 km (0.096 R)
• M3: 1,020,407 km (0.12 R)
• M4: 1,506,451 km (0.113 R)
• M5: 1,964,968 km (0.088 R)
• M6: 2,553,187 km (0.083 R)
• M7: 3,579,877 km (0.082 R)
• M8: 4,240,950 km (0.045 R)
• M9: 6,392,616 km (0.086 R)
• M10: 7,484,381 km (0.114 R)
• M11: 9,142,823 km (0.054 R)
• M12: 9,511,283 km (0.089 R)
• M13: 10,727,065 km (0.056 R)
• M14: 13,822,095 km (0.066 R)
• M15: 14,742,870 km (0.114 R)
• M16: 16,099,723 km (0.11 R)
• M17: 16,706,043 km (0.063 R)
• M18: 20,669,190 km (0.095 R)
• M19: 21,224,946 km (0.09 R)
• M20: 26,220,468 km (0.114 R)
• M21: 26,591,470 km (0.041 R)
• M22: 27,821,165 km (0.069 R)
• M23: 29,386,407 km (0.07 R)
• M24: 30,803,398 km (0.055 R)
• M25: 32,265,418 km (0.061 R)
• M26: 36,351,385 km (0.071 R)
• M27: 40,275,636 km (0.117 R)
• M28: 42,530,974 km (0.07 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 864.7

Radius: 3.8

Gravity: 59.88 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 10 AU - 14.54 AU

Year: 16279 Days

Day: 16.7 Hours

Environment

Temp: -195 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 71,686,189 km

• M1: 53,406 km (0.078 R)
• M2: 252,372 km (0.05 R)
• M3: 465,100 km (0.102 R)
• M4: 1,113,756 km (0.058 R)
• M5: 1,553,424 km (0.082 R)
• M6: 2,099,905 km (0.111 R)
• M7: 6,233,294 km (0.103 R)
• M8: 8,736,216 km (0.103 R)
• M9: 11,017,285 km (0.104 R)
• M10: 12,294,252 km (0.108 R)
• M11: 13,737,722 km (0.106 R)
• M12: 16,228,078 km (0.074 R)
• M13: 17,790,328 km (0.106 R)
• M14: 18,045,842 km (0.112 R)
• M15: 21,305,430 km (0.083 R)
• M16: 22,972,698 km (0.119 R)
• M17: 24,514,304 km (0.097 R)
• M18: 25,149,796 km (0.038 R)
• M19: 27,009,746 km (0.114 R)
• M20: 31,247,405 km (0.112 R)
• M21: 33,008,321 km (0.091 R)
• M22: 43,424,372 km (0.074 R)
• M23: 44,042,511 km (0.101 R)
• M24: 50,041,535 km (0.096 R)
• M25: 53,677,062 km (0.083 R)
• M26: 64,424,323 km (0.119 R)
• M27: 69,769,305 km (0.068 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 477 - 15,424 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit