🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.1

Radius: 0.4

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.51 AU - 0.55 AU

Year: 253 Days

Day: 39.9 Hours

Environment

Temp: -122 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 143

Radius: 12.2

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.66 AU - 0.72 AU

Year: 376 Days

Day: 14.6 Hours

Environment

Temp: -146 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 69,335,039 km

• M1: 151,692 km (0.087 R)
• M2: 559,646 km (0.114 R)
• M3: 1,037,611 km (0.055 R)
• M4: 1,507,199 km (0.088 R)
• M5: 1,998,777 km (0.116 R)
• M6: 2,397,306 km (0.12 R)
• M7: 2,943,039 km (0.088 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 227.2

Radius: 8.7

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.67 AU - 2.41 AU

Year: 1911 Days

Day: 13.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 69,335,039 km

• M1: 108,159 km (0.109 R)
• M2: 492,925 km (0.049 R)
• M3: 1,062,444 km (0.093 R)
• M4: 1,632,262 km (0.061 R)
• M5: 1,981,873 km (0.112 R)
• M6: 2,301,862 km (0.088 R)
• M7: 3,736,356 km (0.037 R)
• M8: 4,109,753 km (0.094 R)
• M9: 4,725,647 km (0.105 R)
• M10: 5,816,365 km (0.082 R)
• M11: 6,546,552 km (0.071 R)
• M12: 9,484,355 km (0.107 R)
• M13: 10,119,398 km (0.117 R)
• M14: 10,400,044 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 652.5

Radius: 14

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 1.94 AU - 2.4 AU

Year: 2097 Days

Day: 11.8 Hours

Environment

Temp: -182 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 69,335,039 km

• M1: 174,132 km (0.026 R)
• M2: 703,858 km (0.03 R)
• M3: 1,385,875 km (0.108 R)
• M4: 2,018,674 km (0.109 R)
• M5: 2,557,675 km (0.11 R)
• M6: 4,573,805 km (0.1 R)
• M7: 5,128,514 km (0.112 R)
• M8: 5,704,017 km (0.074 R)
• M9: 6,246,010 km (0.04 R)
• M10: 6,930,720 km (0.119 R)
• M11: 8,112,094 km (0.113 R)
• M12: 8,671,441 km (0.081 R)
• M13: 9,457,428 km (0.077 R)
• M14: 11,747,771 km (0.101 R)
• M15: 12,222,744 km (0.11 R)
• M16: 13,509,585 km (0.106 R)
• M17: 14,611,822 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 818.9

Radius: 15

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2.44 AU - 3.5 AU

Year: 3358 Days

Day: 14.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 69,335,039 km

• M1: 186,698 km (0.025 R)
• M2: 812,616 km (0.058 R)
• M3: 1,701,077 km (0.117 R)
• M4: 2,321,310 km (0.106 R)
• M5: 2,800,323 km (0.102 R)
• M6: 6,256,033 km (0.111 R)
• M7: 6,731,156 km (0.1 R)
• M8: 7,423,794 km (0.051 R)
• M9: 8,552,061 km (0.033 R)
• M10: 12,441,157 km (0.118 R)
• M11: 12,956,971 km (0.099 R)
• M12: 15,111,928 km (0.101 R)
• M13: 18,324,393 km (0.106 R)
• M14: 21,163,461 km (0.073 R)
• M15: 23,995,199 km (0.041 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 527.9

Radius: 7.5

Gravity: 9.38 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 6.06 AU - 8.28 AU

Year: 12595 Days

Day: 24.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 69,335,039 km

• M1: 95,294 km (0.095 R)
• M2: 567,126 km (0.051 R)
• M3: 800,498 km (0.108 R)
• M4: 1,265,149 km (0.102 R)
• M5: 3,392,132 km (0.092 R)
• M6: 4,104,218 km (0.111 R)
• M7: 4,817,500 km (0.066 R)
• M8: 5,270,333 km (0.088 R)
• M9: 5,680,680 km (0.102 R)
• M10: 9,819,006 km (0.097 R)
• M11: 10,178,639 km (0.11 R)
• M12: 19,669,577 km (0.055 R)
• M13: 21,935,985 km (0.095 R)
• M14: 26,286,590 km (0.085 R)
• M15: 27,382,095 km (0.069 R)
• M16: 29,877,088 km (0.078 R)
• M17: 33,665,505 km (0.108 R)
• M18: 41,110,692 km (0.072 R)
• M19: 41,776,552 km (0.099 R)
• M20: 47,802,803 km (0.1 R)

Asteroid Belt

Center: 8.44 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 9.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 188.4

Radius: 6.9

Gravity: 3.96 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 9.13 AU - 10.29 AU

Year: 19849 Days

Day: 24.7 Hours

Environment

Temp: -224 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 69,335,039 km

• M1: 86,019 km (0.116 R)
• M2: 439,070 km (0.103 R)
• M3: 1,549,984 km (0.032 R)
• M4: 1,916,947 km (0.04 R)
• M5: 2,211,057 km (0.09 R)
• M6: 2,436,650 km (0.087 R)
• M7: 4,776,660 km (0.11 R)
• M8: 4,995,522 km (0.061 R)
• M9: 6,119,301 km (0.116 R)
• M10: 7,911,035 km (0.119 R)
• M11: 8,809,669 km (0.118 R)
• M12: 9,477,923 km (0.117 R)
• M13: 10,334,371 km (0.036 R)
• M14: 11,629,738 km (0.105 R)
• M15: 12,969,387 km (0.102 R)
• M16: 15,200,789 km (0.079 R)
• M17: 16,943,305 km (0.07 R)
• M18: 17,825,185 km (0.103 R)
• M19: 19,920,752 km (0.085 R)
• M20: 20,902,862 km (0.094 R)
• M21: 25,343,674 km (0.118 R)
• M22: 26,204,610 km (0.093 R)
• M23: 27,582,407 km (0.096 R)
• M24: 31,674,357 km (0.03 R)
• M25: 34,036,956 km (0.11 R)
• M26: 36,635,471 km (0.064 R)
• M27: 42,090,408 km (0.044 R)
• M28: 48,499,480 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 383.5

Radius: 7.6

Gravity: 6.64 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 9.91 AU - 11.67 AU

Year: 23251 Days

Day: 20.3 Hours

Environment

Temp: -235 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 69,335,039 km

• M1: 97,538 km (0.059 R)
• M2: 754,272 km (0.093 R)
• M3: 1,427,313 km (0.071 R)
• M4: 2,039,767 km (0.112 R)
• M5: 4,660,123 km (0.093 R)
• M6: 5,793,926 km (0.092 R)
• M7: 6,922,342 km (0.051 R)
• M8: 7,421,850 km (0.11 R)
• M9: 8,646,159 km (0.091 R)
• M10: 14,901,444 km (0.103 R)
• M11: 15,427,430 km (0.078 R)
• M12: 24,876,480 km (0.117 R)
• M13: 41,427,540 km (0.101 R)
• M14: 43,068,629 km (0.1 R)
• M15: 45,219,547 km (0.076 R)
• M16: 46,321,335 km (0.09 R)
• M17: 47,926,371 km (0.065 R)
• M18: 51,077,351 km (0.07 R)
• M19: 56,329,283 km (0.049 R)
• M20: 60,401,935 km (0.086 R)
• M21: 62,123,059 km (0.105 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: 300 - 11,624 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit