🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.68

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.57 AU - 0.77 AU

Year: 354 Days

Day: 36.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 37.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 537.1

Radius: 14

Gravity: 2.74 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.7 AU - 0.78 AU

Year: 411 Days

Day: 8.9 Hours

Environment

Temp: -137 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 61,662,278 km

• M1: 174,730 km (0.051 R)
• M2: 634,893 km (0.043 R)
• M3: 1,141,731 km (0.07 R)
• M4: 1,868,178 km (0.112 R)
• M5: 2,321,460 km (0.101 R)
• M6: 2,819,471 km (0.092 R)
• M7: 3,322,120 km (0.057 R)
• M8: 3,909,591 km (0.118 R)
• M9: 4,401,768 km (0.064 R)
• M10: 5,157,985 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 18.7

Radius: 12.9

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 2.41 AU - 3.17 AU

Year: 3009 Days

Day: 11.9 Hours

Environment

Temp: -210 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 61,662,278 km

• M1: 160,369 km (0.106 R)
• M2: 842,086 km (0.114 R)
• M3: 1,312,572 km (0.113 R)
• M4: 3,506,873 km (0.09 R)
• M5: 6,163,881 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 72.3

Radius: 13.5

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 3.41 AU - 4.1 AU

Year: 4689 Days

Day: 11.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 61,662,278 km

• M1: 167,998 km (0.086 R)
• M2: 840,890 km (0.074 R)
• M3: 1,390,213 km (0.112 R)
• M4: 2,341,805 km (0.099 R)
• M5: 2,885,294 km (0.065 R)
• M6: 4,139,074 km (0.095 R)
• M7: 5,021,552 km (0.116 R)
• M8: 7,695,464 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 613.9

Radius: 11.7

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 3.15 AU - 5.23 AU

Year: 5538 Days

Day: 12.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 61,662,278 km

• M1: 145,559 km (0.118 R)
• M2: 513,121 km (0.083 R)
• M3: 902,075 km (0.109 R)
• M4: 1,847,534 km (0.102 R)
• M5: 2,267,754 km (0.12 R)
• M6: 3,009,909 km (0.085 R)
• M7: 3,862,318 km (0.077 R)
• M8: 4,634,093 km (0.045 R)
• M9: 5,029,929 km (0.098 R)
• M10: 5,740,220 km (0.038 R)
• M11: 7,791,506 km (0.108 R)
• M12: 8,200,955 km (0.094 R)
• M13: 10,648,825 km (0.034 R)
• M14: 13,283,992 km (0.071 R)
• M15: 13,978,275 km (0.072 R)
• M16: 14,417,345 km (0.068 R)
• M17: 15,036,082 km (0.063 R)
• M18: 16,387,250 km (0.068 R)
• M19: 21,865,823 km (0.101 R)
• M20: 25,095,791 km (0.077 R)
• M21: 26,656,545 km (0.093 R)
• M22: 27,503,419 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 790.8

Radius: 11

Gravity: 6.54 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 4.26 AU - 4.64 AU

Year: 6061 Days

Day: 6.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 61,662,278 km

• M1: 141,819 km (0.117 R)
• M2: 1,029,981 km (0.119 R)
• M3: 1,461,571 km (0.072 R)
• M4: 1,881,343 km (0.106 R)
• M5: 2,484,970 km (0.11 R)
• M6: 3,298,334 km (0.113 R)
• M7: 3,981,697 km (0.062 R)
• M8: 4,331,906 km (0.079 R)
• M9: 7,505,026 km (0.069 R)
• M10: 8,002,888 km (0.082 R)
• M11: 9,808,534 km (0.068 R)
• M12: 11,668,185 km (0.112 R)
• M13: 14,911,766 km (0.072 R)
• M14: 17,491,581 km (0.115 R)
• M15: 18,299,709 km (0.09 R)
• M16: 20,502,538 km (0.063 R)
• M17: 20,873,690 km (0.078 R)
• M18: 22,169,357 km (0.028 R)
• M19: 23,843,058 km (0.101 R)
• M20: 28,901,261 km (0.112 R)
• M21: 32,376,570 km (0.111 R)
• M22: 35,477,733 km (0.057 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 389.3

Radius: 5

Gravity: 15.57 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 7.16 AU - 9.02 AU

Year: 14857 Days

Day: 21.4 Hours

Environment

Temp: -229 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 61,662,278 km

• M1: 62,682 km (0.104 R)
• M2: 243,545 km (0.081 R)
• M3: 481,406 km (0.113 R)
• M4: 840,291 km (0.069 R)
• M5: 1,232,537 km (0.085 R)
• M6: 1,527,095 km (0.029 R)
• M7: 2,677,652 km (0.106 R)
• M8: 3,366,700 km (0.07 R)
• M9: 3,833,296 km (0.093 R)
• M10: 4,520,848 km (0.107 R)
• M11: 4,990,286 km (0.115 R)
• M12: 5,153,796 km (0.1 R)
• M13: 5,561,002 km (0.091 R)
• M14: 6,362,697 km (0.083 R)
• M15: 7,448,628 km (0.102 R)
• M16: 10,505,810 km (0.039 R)
• M17: 11,496,297 km (0.107 R)
• M18: 12,607,660 km (0.083 R)
• M19: 19,254,144 km (0.108 R)
• M20: 20,564,172 km (0.087 R)
• M21: 24,470,920 km (0.09 R)
• M22: 26,300,951 km (0.117 R)
• M23: 28,845,013 km (0.104 R)
• M24: 30,122,429 km (0.083 R)
• M25: 31,437,245 km (0.077 R)
• M26: 33,829,314 km (0.047 R)
• M27: 34,534,369 km (0.101 R)
• M28: 39,487,256 km (0.061 R)
• M29: 43,360,344 km (0.098 R)
• M30: 51,386,869 km (0.037 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 362.7

Radius: 7.7

Gravity: 6.12 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 9.58 AU - 10.18 AU

Year: 20052 Days

Day: 17.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 61,662,278 km

• M1: 104,868 km (0.089 R)
• M2: 372,349 km (0.05 R)
• M3: 778,507 km (0.101 R)
• M4: 2,209,261 km (0.067 R)
• M5: 5,818,908 km (0.072 R)
• M6: 6,088,334 km (0.085 R)
• M7: 7,517,891 km (0.083 R)
• M8: 9,209,843 km (0.067 R)
• M9: 10,117,005 km (0.118 R)
• M10: 14,346,885 km (0.092 R)
• M11: 16,386,801 km (0.074 R)
• M12: 17,476,023 km (0.061 R)
• M13: 26,486,901 km (0.088 R)
• M14: 27,228,757 km (0.045 R)
• M15: 33,917,577 km (0.039 R)
• M16: 40,497,789 km (0.037 R)
• M17: 52,548,646 km (0.066 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 227 - 11,374 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit