🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.14

Radius: 1.77

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.48 AU - 0.6 AU

Year: 256 Days

Day: 12.8 Hours

Environment

Temp: -114 °C

Axial Tilt: 54.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,508,683 km

• M1: 49,517 km (0.034 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 14.2

Radius: 14.1

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.84 AU - 1.18 AU

Year: 655 Days

Day: 12.4 Hours

Environment

Temp: -149 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 46,508,683 km

• M1: 175,628 km (0.035 R)
• M2: 685,607 km (0.031 R)
• M3: 1,528,292 km (0.117 R)
• M4: 1,996,683 km (0.109 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.5

Radius: 12.3

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.14 AU - 1.52 AU

Year: 990 Days

Day: 11 Hours

Environment

Temp: -168 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 46,508,683 km

• M1: 153,039 km (0.081 R)
• M2: 604,375 km (0.079 R)
• M3: 1,594,115 km (0.12 R)
• M4: 2,030,791 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.2

Radius: 11.8

Gravity: 6.53 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.54 AU - 1.92 AU

Year: 1469 Days

Day: 6.7 Hours

Environment

Temp: -185 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 46,508,683 km

• M1: 146,756 km (0.106 R)
• M2: 618,138 km (0.064 R)
• M3: 1,285,195 km (0.089 R)
• M4: 1,683,425 km (0.097 R)
• M5: 2,153,312 km (0.094 R)
• M6: 2,589,090 km (0.085 R)
• M7: 3,205,434 km (0.096 R)
• M8: 3,971,075 km (0.105 R)
• M9: 5,321,795 km (0.115 R)
• M10: 6,346,390 km (0.111 R)
• M11: 8,876,539 km (0.105 R)
• M12: 9,807,786 km (0.097 R)
• M13: 10,487,110 km (0.118 R)
• M14: 12,478,557 km (0.102 R)
• M15: 13,114,348 km (0.09 R)
• M16: 13,688,056 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423

Radius: 14.8

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 2.34 AU - 2.38 AU

Year: 2341 Days

Day: 14 Hours

Environment

Temp: -187 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,508,683 km

• M1: 184,005 km (0.112 R)
• M2: 719,715 km (0.096 R)
• M3: 2,516,835 km (0.096 R)
• M4: 3,378,668 km (0.065 R)
• M5: 3,996,507 km (0.096 R)
• M6: 4,628,558 km (0.079 R)
• M7: 5,129,711 km (0.05 R)
• M8: 8,205,593 km (0.119 R)
• M9: 8,912,144 km (0.104 R)
• M10: 10,695,350 km (0.027 R)
• M11: 12,506,681 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 628.6

Radius: 10.5

Gravity: 5.7 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 1.85 AU - 3.03 AU

Year: 2461 Days

Day: 12.5 Hours

Environment

Temp: -192 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,508,683 km

• M1: 130,599 km (0.031 R)
• M2: 500,106 km (0.071 R)
• M3: 1,103,733 km (0.11 R)
• M4: 1,605,036 km (0.103 R)
• M5: 2,052,483 km (0.12 R)
• M6: 7,549,905 km (0.057 R)
• M7: 8,551,762 km (0.099 R)
• M8: 9,325,034 km (0.101 R)
• M9: 10,144,232 km (0.065 R)
• M10: 15,998,595 km (0.051 R)
• M11: 17,913,298 km (0.058 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 681.8

Radius: 8.5

Gravity: 9.44 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 2.56 AU - 2.9 AU

Year: 2912 Days

Day: 13 Hours

Environment

Temp: -202 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 46,508,683 km

• M1: 107,262 km (0.041 R)
• M2: 402,269 km (0.045 R)
• M3: 699,370 km (0.12 R)
• M4: 1,611,917 km (0.028 R)
• M5: 1,900,192 km (0.102 R)
• M6: 2,832,336 km (0.087 R)
• M7: 3,473,962 km (0.11 R)
• M8: 4,901,574 km (0.106 R)
• M9: 5,513,579 km (0.069 R)
• M10: 5,798,563 km (0.092 R)
• M11: 6,597,565 km (0.115 R)
• M12: 7,882,312 km (0.103 R)
• M13: 8,515,260 km (0.109 R)
• M14: 10,578,664 km (0.058 R)
• M15: 11,060,668 km (0.112 R)
• M16: 12,068,659 km (0.115 R)
• M17: 14,558,865 km (0.101 R)
• M18: 19,259,978 km (0.07 R)
• M19: 20,777,798 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.7

Radius: 13.2

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 3.46 AU - 5.36 AU

Year: 5980 Days

Day: 7.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 46,508,683 km

• M1: 164,109 km (0.066 R)
• M2: 625,917 km (0.115 R)
• M3: 1,070,822 km (0.102 R)
• M4: 1,568,384 km (0.061 R)
• M5: 2,064,899 km (0.098 R)
• M6: 2,758,884 km (0.09 R)
• M7: 3,234,456 km (0.079 R)
• M8: 5,349,919 km (0.088 R)
• M9: 6,292,535 km (0.069 R)
• M10: 8,837,644 km (0.102 R)
• M11: 12,901,470 km (0.097 R)
• M12: 14,534,032 km (0.049 R)
• M13: 15,491,757 km (0.079 R)
• M14: 17,867,371 km (0.043 R)
• M15: 18,548,939 km (0.071 R)
• M16: 18,966,317 km (0.059 R)
• M17: 19,675,710 km (0.109 R)
• M18: 20,182,847 km (0.084 R)
• M19: 22,455,538 km (0.064 R)
• M20: 25,487,737 km (0.111 R)
• M21: 26,351,964 km (0.088 R)
• M22: 29,625,614 km (0.057 R)
• M23: 30,100,737 km (0.115 R)
• M24: 33,059,484 km (0.098 R)
• M25: 33,880,178 km (0.053 R)
• M26: 34,609,318 km (0.118 R)
• M27: 35,348,930 km (0.085 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 337.9

Radius: 6.4

Gravity: 8.25 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 6.36 AU - 8.9 AU

Year: 13608 Days

Day: 22.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 46,508,683 km

• M1: 80,484 km (0.098 R)
• M2: 392,994 km (0.099 R)
• M3: 594,502 km (0.094 R)
• M4: 953,387 km (0.118 R)
• M5: 1,320,650 km (0.081 R)
• M6: 2,174,405 km (0.11 R)
• M7: 2,647,434 km (0.092 R)
• M8: 3,232,960 km (0.039 R)
• M9: 3,848,854 km (0.091 R)
• M10: 4,628,409 km (0.092 R)
• M11: 4,869,261 km (0.119 R)
• M12: 6,023,558 km (0.102 R)
• M13: 7,720,297 km (0.065 R)
• M14: 8,059,735 km (0.12 R)
• M15: 9,566,784 km (0.052 R)
• M16: 11,414,766 km (0.106 R)
• M17: 11,688,979 km (0.046 R)
• M18: 12,250,719 km (0.114 R)
• M19: 13,733,384 km (0.074 R)
• M20: 14,422,282 km (0.089 R)
• M21: 14,937,497 km (0.105 R)
• M22: 15,265,715 km (0.106 R)
• M23: 18,141,285 km (0.072 R)
• M24: 20,865,761 km (0.096 R)
• M25: 21,691,542 km (0.12 R)
• M26: 22,797,519 km (0.114 R)
• M27: 23,762,275 km (0.117 R)
• M28: 24,390,138 km (0.1 R)
• M29: 31,504,414 km (0.095 R)
• M30: 34,722,264 km (0.092 R)
• M31: 36,115,619 km (0.086 R)
• M32: 39,137,197 km (0.102 R)
• M33: 40,645,741 km (0.086 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 439 - 10,488 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit