🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.45 AU - 0.73 AU

Year: 166 Days

Day: 42.2 Hours

Environment

Temp: 150 °C

Axial Tilt: 20.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.82

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.66 AU - 1.04 AU

Year: 286 Days

Day: 29 Hours

Environment

Temp: 146 °C

Axial Tilt: 20.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.31

Radius: 1.79

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 2.27 AU - 3.13 AU

Year: 1620 Days

Day: 43.9 Hours

Environment

Temp: -87 °C

Axial Tilt: 23.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 6.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.9

Radius: 13.6

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 5.15 AU - 8.13 AU

Year: 6249 Days

Day: 10.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 68,946,699 km

• M1: 175,927 km (0.049 R)
• M2: 619,634 km (0.085 R)
• M3: 1,259,614 km (0.091 R)
• M4: 2,888,436 km (0.058 R)
• M5: 3,583,019 km (0.088 R)
• M6: 4,291,813 km (0.098 R)
• M7: 5,670,657 km (0.116 R)
• M8: 6,261,718 km (0.029 R)
• M9: 7,708,030 km (0.085 R)
• M10: 8,738,012 km (0.042 R)
• M11: 10,670,816 km (0.075 R)
• M12: 12,092,594 km (0.118 R)
• M13: 14,756,184 km (0.08 R)
• M14: 16,636,929 km (0.061 R)
• M15: 19,321,014 km (0.035 R)
• M16: 21,216,868 km (0.113 R)
• M17: 21,994,627 km (0.11 R)
• M18: 23,984,279 km (0.105 R)
• M19: 24,905,951 km (0.071 R)

Planet 5 - Gas Giant

Semi-Major Axis: 8.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.3

Radius: 13.2

Gravity: 1.63 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 7.4 AU - 10.1 AU

Year: 9454 Days

Day: 5.7 Hours

Environment

Temp: -169 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 68,946,699 km

• M1: 164,109 km (0.066 R)
• M2: 603,328 km (0.118 R)
• M3: 1,395,898 km (0.071 R)
• M4: 2,074,773 km (0.059 R)
• M5: 2,578,768 km (0.079 R)
• M6: 3,083,960 km (0.111 R)
• M7: 3,566,114 km (0.101 R)
• M8: 4,346,566 km (0.106 R)
• M9: 5,929,312 km (0.094 R)
• M10: 6,379,152 km (0.062 R)
• M11: 6,956,151 km (0.032 R)
• M12: 8,940,418 km (0.084 R)
• M13: 10,153,357 km (0.115 R)
• M14: 10,658,848 km (0.082 R)
• M15: 19,621,406 km (0.111 R)
• M16: 25,738,912 km (0.119 R)
• M17: 34,440,123 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 10.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359.7

Radius: 14.2

Gravity: 1.78 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 8.49 AU - 12.33 AU

Year: 12268 Days

Day: 13.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 68,946,699 km

• M1: 176,525 km (0.101 R)
• M2: 794,365 km (0.08 R)
• M3: 1,380,340 km (0.065 R)
• M4: 1,850,974 km (0.113 R)
• M5: 2,656,409 km (0.107 R)
• M6: 3,493,709 km (0.054 R)
• M7: 4,307,072 km (0.106 R)
• M8: 4,937,029 km (0.105 R)
• M9: 5,727,205 km (0.085 R)
• M10: 6,600,258 km (0.085 R)
• M11: 7,088,396 km (0.096 R)
• M12: 7,969,827 km (0.112 R)
• M13: 8,833,305 km (0.116 R)
• M14: 10,849,735 km (0.09 R)
• M15: 12,580,283 km (0.096 R)
• M16: 14,301,856 km (0.048 R)
• M17: 16,927,597 km (0.085 R)
• M18: 19,022,267 km (0.059 R)
• M19: 21,203,703 km (0.099 R)
• M20: 28,251,707 km (0.098 R)
• M21: 34,435,485 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 720

Radius: 4

Gravity: 45 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 16.62 AU - 17.9 AU

Year: 26191 Days

Day: 22.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 68,946,699 km

• M1: 49,816 km (0.088 R)
• M2: 292,913 km (0.102 R)
• M3: 562,937 km (0.082 R)
• M4: 746,643 km (0.025 R)
• M5: 1,021,903 km (0.109 R)
• M6: 1,146,668 km (0.112 R)
• M7: 2,330,436 km (0.068 R)
• M8: 2,523,716 km (0.095 R)
• M9: 3,375,826 km (0.082 R)
• M10: 4,367,809 km (0.065 R)
• M11: 5,455,685 km (0.076 R)
• M12: 12,988,237 km (0.106 R)
• M13: 16,303,176 km (0.101 R)
• M14: 16,565,870 km (0.111 R)
• M15: 17,099,485 km (0.104 R)
• M16: 18,865,189 km (0.111 R)
• M17: 19,349,288 km (0.1 R)
• M18: 19,940,947 km (0.086 R)
• M19: 20,544,724 km (0.114 R)
• M20: 22,107,274 km (0.067 R)
• M21: 28,010,556 km (0.075 R)
• M22: 28,387,243 km (0.104 R)
• M23: 29,667,352 km (0.092 R)
• M24: 30,851,868 km (0.086 R)
• M25: 35,758,529 km (0.109 R)
• M26: 36,499,487 km (0.051 R)
• M27: 40,357,616 km (0.119 R)
• M28: 43,465,213 km (0.112 R)
• M29: 53,931,379 km (0.104 R)
• M30: 56,487,408 km (0.096 R)
• M31: 58,507,727 km (0.1 R)
• M32: 60,785,056 km (0.064 R)
• M33: 62,264,579 km (0.116 R)
• M34: 62,905,905 km (0.084 R)
• M35: 71,883,422 km (0.099 R)
• M36: 74,014,594 km (0.071 R)
• M37: 75,216,613 km (0.112 R)
• M38: 84,780,105 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 87.3

Radius: 5.9

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 16.51 AU - 18.51 AU

Year: 26762 Days

Day: 24.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 68,946,699 km

• M1: 94,546 km (0.117 R)
• M2: 372,050 km (0.098 R)
• M3: 581,337 km (0.087 R)
• M4: 1,339,350 km (0.113 R)
• M5: 5,402,278 km (0.103 R)
• M6: 8,807,126 km (0.088 R)
• M7: 9,951,101 km (0.117 R)
• M8: 19,424,087 km (0.077 R)
• M9: 20,052,547 km (0.113 R)
• M10: 21,682,715 km (0.113 R)
• M11: 25,111,947 km (0.027 R)
• M12: 27,884,445 km (0.077 R)
• M13: 29,089,156 km (0.11 R)
• M14: 29,704,303 km (0.07 R)
• M15: 37,293,852 km (0.08 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 257.7

Radius: 5.9

Gravity: 7.4 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 17.79 AU - 18.41 AU

Year: 28126 Days

Day: 16.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 68,946,699 km

• M1: 84,822 km (0.109 R)
• M2: 911,350 km (0.047 R)
• M3: 1,111,213 km (0.117 R)
• M4: 3,102,959 km (0.054 R)
• M5: 4,415,531 km (0.068 R)
• M6: 5,139,734 km (0.107 R)
• M7: 6,821,065 km (0.079 R)
• M8: 7,882,162 km (0.107 R)
• M9: 8,631,049 km (0.089 R)
• M10: 9,102,432 km (0.088 R)
• M11: 9,535,817 km (0.113 R)
• M12: 10,619,953 km (0.098 R)
• M13: 10,858,262 km (0.112 R)
• M14: 13,861,888 km (0.1 R)
• M15: 16,093,889 km (0.075 R)
• M16: 17,050,118 km (0.049 R)
• M17: 18,987,710 km (0.106 R)
• M18: 19,784,318 km (0.104 R)
• M19: 20,510,915 km (0.107 R)
• M20: 20,973,921 km (0.053 R)
• M21: 24,001,931 km (0.108 R)
• M22: 24,309,654 km (0.096 R)
• M23: 29,950,541 km (0.109 R)
• M24: 36,405,091 km (0.058 R)
• M25: 40,314,532 km (0.106 R)
• M26: 47,168,807 km (0.084 R)
• M27: 49,948,036 km (0.055 R)
• M28: 54,760,301 km (0.118 R)
• M29: 57,461,290 km (0.083 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 258 - 15,501 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit