🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.43

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.39 AU - 0.63 AU

Year: 235 Days

Day: 25.5 Hours

Environment

Temp: -116 °C

Axial Tilt: 38.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.9

Radius: 11.3

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.66 AU - 0.7 AU

Year: 362 Days

Day: 12.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 49,429,810 km

• M1: 140,472 km (0.108 R)
• M2: 541,095 km (0.097 R)
• M3: 918,531 km (0.119 R)
• M4: 1,402,330 km (0.106 R)
• M5: 1,954,795 km (0.045 R)
• M6: 2,538,975 km (0.078 R)
• M7: 3,862,168 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 475.8

Radius: 13.4

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.82 AU - 1.28 AU

Year: 695 Days

Day: 12.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 49,429,810 km

• M1: 166,652 km (0.105 R)
• M2: 621,878 km (0.089 R)
• M3: 1,063,790 km (0.045 R)
• M4: 1,562,251 km (0.106 R)
• M5: 2,029,445 km (0.102 R)
• M6: 2,825,904 km (0.117 R)
• M7: 3,821,926 km (0.092 R)
• M8: 4,260,697 km (0.106 R)
• M9: 4,844,727 km (0.055 R)
• M10: 5,291,875 km (0.108 R)
• M11: 6,327,392 km (0.118 R)
• M12: 7,048,304 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 660.7

Radius: 8

Gravity: 10.32 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.22 AU - 1.94 AU

Year: 1282 Days

Day: 12.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 49,429,810 km

• M1: 117,584 km (0.075 R)
• M2: 387,758 km (0.101 R)
• M3: 638,334 km (0.088 R)
• M4: 1,308,084 km (0.062 R)
• M5: 2,552,439 km (0.073 R)
• M6: 2,891,278 km (0.088 R)
• M7: 3,201,245 km (0.092 R)
• M8: 3,596,034 km (0.112 R)
• M9: 3,921,559 km (0.1 R)
• M10: 7,229,168 km (0.11 R)
• M11: 8,238,804 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 726.8

Radius: 9.8

Gravity: 7.57 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 3.01 AU - 4.55 AU

Year: 4745 Days

Day: 13.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 46.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 49,429,810 km

• M1: 121,922 km (0.101 R)
• M2: 482,304 km (0.045 R)
• M3: 874,549 km (0.087 R)
• M4: 1,526,945 km (0.104 R)
• M5: 1,865,485 km (0.091 R)
• M6: 2,239,031 km (0.09 R)
• M7: 2,803,165 km (0.104 R)
• M8: 3,914,079 km (0.092 R)
• M9: 6,236,286 km (0.118 R)
• M10: 7,113,229 km (0.118 R)
• M11: 12,271,364 km (0.071 R)
• M12: 13,073,358 km (0.117 R)
• M13: 15,061,214 km (0.061 R)
• M14: 15,573,737 km (0.088 R)
• M15: 16,038,986 km (0.099 R)
• M16: 16,573,499 km (0.064 R)
• M17: 18,635,556 km (0.098 R)
• M18: 19,093,924 km (0.083 R)
• M19: 23,947,328 km (0.114 R)
• M20: 29,388,502 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 189.8

Radius: 8.8

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 3.39 AU - 5.29 AU

Year: 5838 Days

Day: 13.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 49,429,810 km

• M1: 122,371 km (0.067 R)
• M2: 896,989 km (0.11 R)
• M3: 1,921,884 km (0.07 R)
• M4: 2,906,387 km (0.109 R)
• M5: 4,173,930 km (0.092 R)
• M6: 6,788,751 km (0.113 R)
• M7: 9,271,627 km (0.117 R)
• M8: 10,063,150 km (0.087 R)
• M9: 12,127,899 km (0.117 R)
• M10: 13,399,930 km (0.116 R)
• M11: 14,165,572 km (0.09 R)
• M12: 17,522,099 km (0.109 R)
• M13: 18,554,026 km (0.08 R)
• M14: 19,084,948 km (0.109 R)
• M15: 20,115,378 km (0.087 R)
• M16: 21,503,198 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 99.7

Radius: 4.7

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 4.58 AU - 7.58 AU

Year: 9680 Days

Day: 21.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 49,429,810 km

• M1: 58,642 km (0.051 R)
• M2: 386,112 km (0.028 R)
• M3: 604,525 km (0.072 R)
• M4: 880,234 km (0.11 R)
• M5: 1,335,759 km (0.055 R)
• M6: 2,112,621 km (0.052 R)
• M7: 2,286,454 km (0.114 R)
• M8: 2,549,297 km (0.096 R)
• M9: 3,285,319 km (0.084 R)
• M10: 3,977,508 km (0.07 R)
• M11: 4,334,897 km (0.065 R)
• M12: 6,880,754 km (0.096 R)
• M13: 7,969,976 km (0.051 R)
• M14: 9,792,078 km (0.059 R)
• M15: 14,751,846 km (0.12 R)
• M16: 15,989,170 km (0.044 R)
• M17: 17,062,086 km (0.089 R)
• M18: 17,942,469 km (0.072 R)
• M19: 21,228,686 km (0.058 R)

Asteroid Belt

Center: 6.6 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 466.1

Radius: 4.3

Gravity: 25.21 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 5.99 AU - 8.25 AU

Year: 12267 Days

Day: 17.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 49,429,810 km

• M1: 64,477 km (0.096 R)
• M2: 236,664 km (0.1 R)
• M3: 379,231 km (0.109 R)
• M4: 625,469 km (0.104 R)
• M5: 853,605 km (0.047 R)
• M6: 1,679,685 km (0.084 R)
• M7: 1,933,552 km (0.101 R)
• M8: 2,176,200 km (0.067 R)
• M9: 3,027,562 km (0.083 R)
• M10: 3,758,048 km (0.044 R)
• M11: 4,164,356 km (0.113 R)
• M12: 4,720,112 km (0.09 R)
• M13: 7,278,834 km (0.102 R)
• M14: 8,896,885 km (0.119 R)
• M15: 14,502,915 km (0.09 R)
• M16: 18,904,085 km (0.087 R)
• M17: 19,293,488 km (0.114 R)
• M18: 20,904,956 km (0.115 R)
• M19: 23,131,122 km (0.082 R)
• M20: 24,118,767 km (0.071 R)
• M21: 24,761,739 km (0.082 R)
• M22: 25,795,011 km (0.096 R)
• M23: 31,722,228 km (0.112 R)
• M24: 40,908,435 km (0.096 R)
• M25: 44,097,563 km (0.077 R)
• M26: 46,172,635 km (0.087 R)
• M27: 46,454,028 km (0.107 R)
• M28: 48,022,861 km (0.082 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 453.8

Radius: 5.3

Gravity: 16.16 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 6.81 AU - 7.89 AU

Year: 12866 Days

Day: 22.7 Hours

Environment

Temp: -235 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,429,810 km

• M1: 67,169 km (0.079 R)
• M2: 358,586 km (0.063 R)
• M3: 529,576 km (0.116 R)
• M4: 1,070,223 km (0.101 R)
• M5: 1,888,673 km (0.052 R)
• M6: 2,255,786 km (0.117 R)
• M7: 5,909,116 km (0.084 R)
• M8: 7,925,695 km (0.116 R)
• M9: 9,948,707 km (0.094 R)
• M10: 12,705,497 km (0.07 R)
• M11: 20,642,412 km (0.109 R)
• M12: 21,142,218 km (0.085 R)
• M13: 21,821,093 km (0.088 R)
• M14: 23,853,829 km (0.077 R)
• M15: 25,245,538 km (0.115 R)
• M16: 32,348,595 km (0.109 R)
• M17: 34,748,743 km (0.043 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 514 - 11,393 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit