🌌 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: 0.31

Radius: 0.63

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.5 AU - 0.52 AU

Year: 239 Days

Day: 44 Hours

Environment

Temp: -117 °C

Axial Tilt: 20 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 281.1

Radius: 8.3

Gravity: 4.08 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.84 AU - 1.1 AU

Year: 627 Days

Day: 5.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 43,219,667 km

• M1: 103,223 km (0.073 R)
• M2: 650,751 km (0.1 R)
• M3: 1,124,826 km (0.092 R)
• M4: 1,611,319 km (0.098 R)
• M5: 1,987,408 km (0.118 R)
• M6: 3,200,946 km (0.08 R)
• M7: 3,736,057 km (0.106 R)
• M8: 4,018,648 km (0.059 R)
• M9: 4,714,726 km (0.109 R)
• M10: 4,984,152 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 503.9

Radius: 14.8

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.14 AU - 1.3 AU

Year: 884 Days

Day: 6.4 Hours

Environment

Temp: -158 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 43,219,667 km

• M1: 192,532 km (0.091 R)
• M2: 784,641 km (0.108 R)
• M3: 1,247,048 km (0.102 R)
• M4: 1,806,544 km (0.076 R)
• M5: 2,610,782 km (0.065 R)
• M6: 4,437,970 km (0.077 R)
• M7: 5,040,700 km (0.027 R)
• M8: 5,603,487 km (0.068 R)
• M9: 6,067,690 km (0.057 R)
• M10: 6,684,332 km (0.11 R)
• M11: 7,388,190 km (0.112 R)
• M12: 7,947,985 km (0.089 R)
• M13: 8,561,337 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 885.2

Radius: 8.8

Gravity: 11.43 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.19 AU - 1.41 AU

Year: 972 Days

Day: 11.1 Hours

Environment

Temp: -169 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 43,219,667 km

• M1: 109,655 km (0.117 R)
• M2: 594,352 km (0.08 R)
• M3: 1,295,667 km (0.109 R)
• M4: 1,718,431 km (0.099 R)
• M5: 2,187,420 km (0.029 R)
• M6: 2,974,754 km (0.044 R)
• M7: 3,731,569 km (0.119 R)
• M8: 4,485,094 km (0.085 R)
• M9: 4,776,361 km (0.062 R)
• M10: 5,790,186 km (0.096 R)
• M11: 6,070,233 km (0.079 R)
• M12: 6,587,991 km (0.07 R)
• M13: 7,159,305 km (0.11 R)
• M14: 7,507,569 km (0.073 R)
• M15: 8,051,208 km (0.099 R)
• M16: 9,130,257 km (0.08 R)
• M17: 9,540,305 km (0.039 R)
• M18: 9,931,952 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 577.1

Radius: 8.1

Gravity: 8.8 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 2.21 AU - 2.41 AU

Year: 2303 Days

Day: 7.7 Hours

Environment

Temp: -199 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 43,219,667 km

• M1: 100,679 km (0.107 R)
• M2: 377,884 km (0.087 R)
• M3: 644,468 km (0.11 R)
• M4: 902,823 km (0.082 R)
• M5: 1,511,836 km (0.118 R)
• M6: 2,547,502 km (0.114 R)
• M7: 3,086,204 km (0.067 R)
• M8: 3,520,786 km (0.039 R)
• M9: 3,976,760 km (0.12 R)
• M10: 4,268,775 km (0.105 R)
• M11: 4,723,104 km (0.109 R)
• M12: 6,281,465 km (0.116 R)
• M13: 7,320,273 km (0.116 R)
• M14: 7,700,700 km (0.111 R)
• M15: 8,437,619 km (0.084 R)
• M16: 8,790,820 km (0.09 R)
• M17: 11,506,470 km (0.116 R)
• M18: 12,843,127 km (0.115 R)
• M19: 13,139,480 km (0.086 R)
• M20: 17,010,026 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 922.2

Radius: 14.3

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 2.65 AU - 3.81 AU

Year: 3808 Days

Day: 10.9 Hours

Environment

Temp: -197 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 43,219,667 km

• M1: 190,887 km (0.064 R)
• M2: 1,074,711 km (0.109 R)
• M3: 1,521,410 km (0.112 R)
• M4: 2,420,793 km (0.085 R)
• M5: 3,028,160 km (0.1 R)
• M6: 3,528,864 km (0.06 R)
• M7: 4,774,566 km (0.073 R)
• M8: 6,449,164 km (0.093 R)
• M9: 7,020,778 km (0.106 R)
• M10: 7,942,001 km (0.118 R)
• M11: 9,900,387 km (0.074 R)
• M12: 11,740,890 km (0.108 R)
• M13: 13,038,801 km (0.075 R)
• M14: 16,788,771 km (0.045 R)
• M15: 21,343,427 km (0.112 R)
• M16: 22,617,253 km (0.115 R)
• M17: 24,016,293 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 614.7

Radius: 5.6

Gravity: 19.6 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 5.45 AU - 6.75 AU

Year: 9883 Days

Day: 15.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 43,219,667 km

• M1: 69,713 km (0.096 R)
• M2: 294,708 km (0.039 R)
• M3: 776,712 km (0.113 R)
• M4: 971,189 km (0.074 R)
• M5: 2,523,866 km (0.097 R)
• M6: 2,745,121 km (0.071 R)
• M7: 3,367,149 km (0.106 R)
• M8: 4,412,688 km (0.025 R)
• M9: 4,764,692 km (0.115 R)
• M10: 5,295,166 km (0.113 R)
• M11: 5,625,030 km (0.058 R)
• M12: 6,584,550 km (0.113 R)
• M13: 8,287,124 km (0.043 R)
• M14: 8,914,388 km (0.093 R)
• M15: 11,577,379 km (0.101 R)
• M16: 13,969,449 km (0.066 R)
• M17: 14,156,447 km (0.096 R)
• M18: 15,247,763 km (0.048 R)
• M19: 15,847,800 km (0.055 R)
• M20: 22,824,596 km (0.072 R)
• M21: 23,521,124 km (0.055 R)
• M22: 23,963,634 km (0.067 R)
• M23: 31,496,934 km (0.086 R)
• M24: 34,358,891 km (0.106 R)
• M25: 34,585,981 km (0.051 R)
• M26: 36,674,965 km (0.088 R)
• M27: 41,873,491 km (0.044 R)
• M28: 44,512,996 km (0.052 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 34.6

Radius: 7.5

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 6.03 AU - 6.63 AU

Year: 10448 Days

Day: 19.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 43,219,667 km

• M1: 213,925 km (0.115 R)
• M2: 554,559 km (0.086 R)
• M3: 1,272,330 km (0.057 R)
• M4: 2,228,559 km (0.119 R)
• M5: 2,872,578 km (0.085 R)
• M6: 5,031,874 km (0.115 R)
• M7: 5,335,109 km (0.118 R)
• M8: 8,772,868 km (0.119 R)
• M9: 10,697,893 km (0.098 R)
• M10: 15,264,817 km (0.12 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 132.3

Radius: 6

Gravity: 3.68 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 8.82 AU - 10.36 AU

Year: 19482 Days

Day: 17.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 43,219,667 km

• M1: 74,649 km (0.091 R)
• M2: 301,889 km (0.119 R)
• M3: 859,440 km (0.096 R)
• M4: 1,384,977 km (0.038 R)
• M5: 1,611,019 km (0.053 R)
• M6: 2,138,352 km (0.091 R)
• M7: 3,800,235 km (0.118 R)
• M8: 4,192,480 km (0.05 R)
• M9: 5,467,802 km (0.085 R)
• M10: 5,933,500 km (0.115 R)
• M11: 6,497,933 km (0.059 R)
• M12: 6,718,590 km (0.089 R)
• M13: 7,980,897 km (0.097 R)
• M14: 13,051,068 km (0.095 R)
• M15: 20,158,014 km (0.093 R)
• M16: 23,259,327 km (0.049 R)
• M17: 26,571,125 km (0.068 R)
• M18: 33,126,354 km (0.095 R)
• M19: 34,111,306 km (0.085 R)
• M20: 34,555,163 km (0.05 R)
• M21: 37,653,186 km (0.104 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: 197 - 19,589 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit