🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.76

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.57 AU - 0.69 AU

Year: 318 Days

Day: 14.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 42.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 778.3

Radius: 11.2

Gravity: 6.2 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.74 AU - 0.86 AU

Year: 455 Days

Day: 12.4 Hours

Environment

Temp: -146 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 67,550,067 km

• M1: 139,276 km (0.076 R)
• M2: 722,707 km (0.088 R)
• M3: 1,137,542 km (0.09 R)
• M4: 1,506,301 km (0.077 R)
• M5: 2,196,396 km (0.102 R)
• M6: 2,564,855 km (0.118 R)
• M7: 3,019,184 km (0.082 R)
• M8: 3,428,334 km (0.119 R)
• M9: 3,954,919 km (0.069 R)
• M10: 4,359,282 km (0.116 R)
• M11: 4,715,026 km (0.072 R)
• M12: 5,106,075 km (0.062 R)
• M13: 5,971,797 km (0.041 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512.5

Radius: 11.4

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.85 AU - 0.93 AU

Year: 534 Days

Day: 5.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 67,550,067 km

• M1: 141,819 km (0.098 R)
• M2: 527,482 km (0.036 R)
• M3: 1,034,020 km (0.114 R)
• M4: 1,456,784 km (0.045 R)
• M5: 1,835,566 km (0.086 R)
• M6: 2,535,086 km (0.071 R)
• M7: 2,893,672 km (0.043 R)
• M8: 3,262,730 km (0.084 R)
• M9: 3,638,370 km (0.096 R)
• M10: 4,609,559 km (0.075 R)
• M11: 5,408,262 km (0.116 R)
• M12: 6,061,556 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389.8

Radius: 11.2

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.03 AU - 1.71 AU

Year: 1020 Days

Day: 13 Hours

Environment

Temp: -175 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 67,550,067 km

• M1: 139,425 km (0.026 R)
• M2: 550,670 km (0.083 R)
• M3: 1,036,264 km (0.1 R)
• M4: 1,452,745 km (0.066 R)
• M5: 1,963,322 km (0.098 R)
• M6: 2,739,287 km (0.073 R)
• M7: 3,192,119 km (0.104 R)
• M8: 3,666,195 km (0.058 R)
• M9: 5,377,445 km (0.109 R)
• M10: 6,031,487 km (0.045 R)
• M11: 6,868,188 km (0.107 R)
• M12: 8,390,496 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 708.9

Radius: 10.7

Gravity: 6.19 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.85 AU - 2.41 AU

Year: 1977 Days

Day: 7.6 Hours

Environment

Temp: -189 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 67,550,067 km

• M1: 133,142 km (0.081 R)
• M2: 499,058 km (0.073 R)
• M3: 850,913 km (0.11 R)
• M4: 1,282,652 km (0.095 R)
• M5: 1,680,283 km (0.034 R)
• M6: 2,088,386 km (0.12 R)
• M7: 2,674,212 km (0.092 R)
• M8: 3,622,662 km (0.097 R)
• M9: 4,097,934 km (0.082 R)
• M10: 4,760,803 km (0.117 R)
• M11: 5,924,375 km (0.12 R)
• M12: 6,612,525 km (0.119 R)
• M13: 7,758,445 km (0.07 R)
• M14: 8,239,851 km (0.112 R)
• M15: 11,140,105 km (0.087 R)
• M16: 11,636,919 km (0.084 R)
• M17: 12,108,601 km (0.113 R)
• M18: 12,798,547 km (0.111 R)
• M19: 14,525,355 km (0.119 R)
• M20: 15,823,116 km (0.114 R)
• M21: 16,353,590 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448

Radius: 12.4

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 2.68 AU - 3.4 AU

Year: 3370 Days

Day: 5.4 Hours

Environment

Temp: -203 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 67,550,067 km

• M1: 167,849 km (0.106 R)
• M2: 791,223 km (0.059 R)
• M3: 1,183,469 km (0.099 R)
• M4: 1,593,666 km (0.072 R)
• M5: 2,917,308 km (0.103 R)
• M6: 3,337,828 km (0.101 R)
• M7: 3,935,621 km (0.051 R)
• M8: 9,425,563 km (0.118 R)
• M9: 10,468,560 km (0.098 R)
• M10: 15,622,805 km (0.111 R)
• M11: 17,514,919 km (0.093 R)
• M12: 20,029,509 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 824

Radius: 9.7

Gravity: 8.76 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 2.66 AU - 3.5 AU

Year: 3437 Days

Day: 14.3 Hours

Environment

Temp: -204 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 67,550,067 km

• M1: 121,174 km (0.105 R)
• M2: 439,519 km (0.037 R)
• M3: 833,859 km (0.101 R)
• M4: 1,291,628 km (0.118 R)
• M5: 1,619,995 km (0.075 R)
• M6: 1,964,818 km (0.111 R)
• M7: 2,543,463 km (0.05 R)
• M8: 3,953,722 km (0.075 R)
• M9: 4,261,894 km (0.12 R)
• M10: 4,586,372 km (0.034 R)
• M11: 5,232,784 km (0.098 R)
• M12: 5,551,128 km (0.113 R)
• M13: 5,938,886 km (0.107 R)
• M14: 10,330,481 km (0.102 R)
• M15: 13,009,031 km (0.117 R)
• M16: 13,744,903 km (0.111 R)
• M17: 14,508,151 km (0.118 R)
• M18: 15,032,641 km (0.092 R)
• M19: 16,174,971 km (0.09 R)
• M20: 16,625,111 km (0.079 R)
• M21: 17,550,373 km (0.076 R)
• M22: 19,440,243 km (0.092 R)
• M23: 21,394,739 km (0.049 R)
• M24: 22,211,993 km (0.069 R)
• M25: 23,692,114 km (0.105 R)
• M26: 24,053,991 km (0.074 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 483.2

Radius: 11.2

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 4.81 AU - 5.09 AU

Year: 7002 Days

Day: 14 Hours

Environment

Temp: -224 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 67,550,067 km

• M1: 140,323 km (0.079 R)
• M2: 585,376 km (0.119 R)
• M3: 1,071,420 km (0.084 R)
• M4: 1,421,629 km (0.119 R)
• M5: 1,920,388 km (0.111 R)
• M6: 2,283,761 km (0.059 R)
• M7: 2,675,408 km (0.093 R)
• M8: 3,111,935 km (0.067 R)
• M9: 3,595,884 km (0.071 R)
• M10: 4,009,373 km (0.089 R)
• M11: 4,480,307 km (0.075 R)
• M12: 5,099,492 km (0.094 R)
• M13: 5,992,143 km (0.074 R)
• M14: 6,576,023 km (0.117 R)
• M15: 7,304,714 km (0.082 R)
• M16: 7,782,231 km (0.102 R)
• M17: 8,163,705 km (0.107 R)
• M18: 11,146,687 km (0.043 R)
• M19: 13,443,762 km (0.075 R)
• M20: 16,659,668 km (0.096 R)
• M21: 18,078,603 km (0.074 R)
• M22: 21,675,535 km (0.118 R)
• M23: 22,280,060 km (0.096 R)
• M24: 23,051,386 km (0.069 R)
• M25: 23,920,400 km (0.048 R)
• M26: 28,686,439 km (0.069 R)
• M27: 30,625,975 km (0.067 R)
• M28: 32,454,660 km (0.085 R)
• M29: 32,848,700 km (0.048 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 657.2

Radius: 6.8

Gravity: 14.21 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 6.98 AU - 10.92 AU

Year: 17024 Days

Day: 19.2 Hours

Environment

Temp: -225 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 67,550,067 km

• M1: 86,767 km (0.119 R)
• M2: 298,448 km (0.075 R)
• M3: 2,229,008 km (0.1 R)
• M4: 4,233,470 km (0.066 R)
• M5: 4,724,301 km (0.118 R)
• M6: 5,399,586 km (0.111 R)
• M7: 8,499,403 km (0.112 R)
• M8: 9,014,468 km (0.072 R)
• M9: 10,050,135 km (0.085 R)
• M10: 11,407,286 km (0.107 R)
• M11: 12,162,008 km (0.047 R)
• M12: 13,840,197 km (0.069 R)
• M13: 15,214,851 km (0.065 R)
• M14: 17,731,836 km (0.058 R)
• M15: 17,981,066 km (0.108 R)
• M16: 21,345,223 km (0.105 R)
• M17: 22,103,385 km (0.082 R)
• M18: 33,782,042 km (0.117 R)
• M19: 34,422,620 km (0.116 R)
• M20: 37,474,267 km (0.036 R)
• M21: 40,845,754 km (0.103 R)
• M22: 46,431,140 km (0.078 R)
• M23: 48,996,444 km (0.089 R)
• M24: 52,334,122 km (0.12 R)
• M25: 54,407,698 km (0.045 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 637.7

Radius: 6.6

Gravity: 14.64 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 6.87 AU - 11.25 AU

Year: 17339 Days

Day: 22.8 Hours

Environment

Temp: -235 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 67,550,067 km

• M1: 82,129 km (0.075 R)
• M2: 309,817 km (0.046 R)
• M3: 537,505 km (0.077 R)
• M4: 743,352 km (0.087 R)
• M5: 1,240,765 km (0.102 R)
• M6: 1,744,610 km (0.092 R)
• M7: 3,229,818 km (0.116 R)
• M8: 9,568,579 km (0.09 R)
• M9: 11,124,397 km (0.058 R)
• M10: 13,245,844 km (0.07 R)
• M11: 15,022,469 km (0.109 R)
• M12: 15,775,694 km (0.064 R)
• M13: 17,275,562 km (0.075 R)
• M14: 20,102,663 km (0.061 R)
• M15: 20,739,501 km (0.067 R)
• M16: 21,109,606 km (0.102 R)
• M17: 25,264,388 km (0.11 R)
• M18: 25,686,403 km (0.091 R)
• M19: 25,899,131 km (0.064 R)
• M20: 26,980,724 km (0.097 R)
• M21: 27,644,041 km (0.088 R)
• M22: 28,773,505 km (0.069 R)
• M23: 30,168,954 km (0.096 R)
• M24: 32,222,484 km (0.104 R)
• M25: 33,472,972 km (0.066 R)
• M26: 34,496,371 km (0.041 R)
• M27: 36,874,978 km (0.082 R)
• M28: 41,369,795 km (0.068 R)
• M29: 45,903,059 km (0.059 R)
• M30: 46,531,520 km (0.032 R)
• M31: 53,653,127 km (0.088 R)
• M32: 54,001,091 km (0.119 R)
• M33: 62,423,152 km (0.066 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 229 - 16,039 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit