🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.8

Radius: 0.91

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.59 AU - 0.69 AU

Year: 336 Days

Day: 27.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 10.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 425

Radius: 11.9

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.55 AU - 0.87 AU

Year: 392 Days

Day: 11.2 Hours

Environment

Temp: -147 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 58,393,837 km

• M1: 148,102 km (0.108 R)
• M2: 553,662 km (0.106 R)
• M3: 964,158 km (0.092 R)
• M4: 1,352,514 km (0.083 R)
• M5: 2,054,278 km (0.093 R)
• M6: 2,463,279 km (0.109 R)
• M7: 2,848,942 km (0.084 R)
• M8: 3,583,019 km (0.061 R)
• M9: 3,970,776 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831

Radius: 9.8

Gravity: 8.65 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.84 AU - 1 AU

Year: 579 Days

Day: 13.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 51.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 58,393,837 km

• M1: 122,221 km (0.115 R)
• M2: 436,377 km (0.082 R)
• M3: 754,422 km (0.096 R)
• M4: 1,079,947 km (0.097 R)
• M5: 1,523,355 km (0.095 R)
• M6: 1,881,492 km (0.052 R)
• M7: 2,616,467 km (0.104 R)
• M8: 3,111,037 km (0.102 R)
• M9: 3,572,098 km (0.102 R)
• M10: 4,379,926 km (0.088 R)
• M11: 5,322,393 km (0.12 R)
• M12: 5,870,071 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 691

Radius: 9.7

Gravity: 7.34 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 1.34 AU - 1.46 AU

Year: 1087 Days

Day: 11 Hours

Environment

Temp: -167 °C

Axial Tilt: 61.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 58,393,837 km

• M1: 120,725 km (0.033 R)
• M2: 482,154 km (0.099 R)
• M3: 1,024,147 km (0.025 R)
• M4: 1,378,844 km (0.116 R)
• M5: 2,062,955 km (0.082 R)
• M6: 2,866,594 km (0.12 R)
• M7: 4,144,759 km (0.097 R)
• M8: 5,082,588 km (0.117 R)
• M9: 6,629,579 km (0.119 R)
• M10: 7,030,950 km (0.094 R)
• M11: 7,882,312 km (0.06 R)
• M12: 8,198,711 km (0.098 R)
• M13: 8,551,014 km (0.058 R)
• M14: 10,561,909 km (0.12 R)

Asteroid Belt

Center: 2.24 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.4

Radius: 9.7

Gravity: 5.79 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.57 AU - 3.57 AU

Year: 3529 Days

Day: 10.4 Hours

Environment

Temp: -197 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 58,393,837 km

• M1: 121,174 km (0.075 R)
• M2: 448,943 km (0.085 R)
• M3: 809,773 km (0.108 R)
• M4: 1,742,666 km (0.067 R)
• M5: 2,170,366 km (0.095 R)
• M6: 3,384,951 km (0.093 R)
• M7: 4,512,620 km (0.097 R)
• M8: 4,907,409 km (0.108 R)
• M9: 7,084,656 km (0.08 R)
• M10: 8,876,090 km (0.095 R)
• M11: 10,544,556 km (0.1 R)
• M12: 11,158,356 km (0.104 R)
• M13: 14,097,056 km (0.104 R)
• M14: 14,640,994 km (0.086 R)
• M15: 17,742,906 km (0.039 R)
• M16: 20,370,293 km (0.083 R)
• M17: 20,747,579 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 233.8

Radius: 12.8

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 3.04 AU - 3.8 AU

Year: 4149 Days

Day: 7.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 58,393,837 km

• M1: 181,761 km (0.055 R)
• M2: 714,928 km (0.063 R)
• M3: 1,197,232 km (0.076 R)
• M4: 1,628,074 km (0.029 R)
• M5: 2,454,751 km (0.058 R)
• M6: 2,863,303 km (0.042 R)
• M7: 4,626,613 km (0.112 R)
• M8: 5,303,544 km (0.109 R)
• M9: 5,740,818 km (0.077 R)
• M10: 6,715,897 km (0.114 R)
• M11: 7,585,210 km (0.093 R)
• M12: 8,047,318 km (0.057 R)
• M13: 8,926,655 km (0.078 R)
• M14: 9,653,999 km (0.104 R)
• M15: 14,639,648 km (0.048 R)
• M16: 15,115,967 km (0.105 R)
• M17: 16,813,305 km (0.03 R)
• M18: 17,335,850 km (0.037 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 29.9

Radius: 4.4

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 6.05 AU - 7.05 AU

Year: 10997 Days

Day: 15.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 58,393,837 km

• M1: 54,902 km (0.099 R)
• M2: 373,396 km (0.09 R)
• M3: 698,921 km (0.045 R)
• M4: 1,263,204 km (0.106 R)
• M5: 1,765,704 km (0.094 R)
• M6: 2,336,120 km (0.109 R)
• M7: 2,560,816 km (0.077 R)
• M8: 3,480,394 km (0.101 R)
• M9: 4,183,953 km (0.098 R)
• M10: 4,932,391 km (0.106 R)
• M11: 6,829,592 km (0.115 R)
• M12: 10,755,638 km (0.072 R)
• M13: 12,354,241 km (0.105 R)
• M14: 14,566,943 km (0.092 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 601.8

Radius: 7.6

Gravity: 10.42 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 6.37 AU - 9.27 AU

Year: 14346 Days

Day: 20 Hours

Environment

Temp: -224 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 58,393,837 km

• M1: 94,546 km (0.11 R)
• M2: 451,786 km (0.103 R)
• M3: 732,431 km (0.11 R)
• M4: 2,004,911 km (0.071 R)
• M5: 2,385,936 km (0.089 R)
• M6: 3,910,189 km (0.115 R)
• M7: 4,291,514 km (0.079 R)
• M8: 4,794,761 km (0.104 R)
• M9: 6,303,157 km (0.101 R)
• M10: 8,291,911 km (0.089 R)
• M11: 9,172,893 km (0.074 R)
• M12: 9,847,130 km (0.116 R)
• M13: 14,123,834 km (0.097 R)
• M14: 14,811,386 km (0.063 R)
• M15: 16,779,196 km (0.119 R)
• M16: 17,550,373 km (0.051 R)
• M17: 19,665,687 km (0.109 R)
• M18: 22,680,832 km (0.07 R)
• M19: 24,200,896 km (0.071 R)
• M20: 25,585,574 km (0.1 R)
• M21: 27,442,533 km (0.031 R)
• M22: 27,760,578 km (0.107 R)
• M23: 30,734,135 km (0.06 R)
• M24: 32,830,450 km (0.115 R)
• M25: 33,069,208 km (0.097 R)
• M26: 33,550,015 km (0.12 R)
• M27: 35,519,770 km (0.053 R)
• M28: 36,405,390 km (0.058 R)
• M29: 38,883,329 km (0.095 R)
• M30: 39,284,550 km (0.119 R)
• M31: 39,959,536 km (0.077 R)
• M32: 41,750,372 km (0.091 R)
• M33: 42,736,521 km (0.032 R)
• M34: 46,535,709 km (0.113 R)
• M35: 57,005,765 km (0.078 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 222 - 18,610 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit