🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.02

Radius: 1.56

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.59 AU - 0.65 AU

Year: 320 Days

Day: 24 Hours

Environment

Temp: -134 °C

Axial Tilt: 27.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.13

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 0.67 AU - 0.67 AU

Year: 360 Days

Day: 38.2 Hours

Environment

Temp: -131 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.9

Radius: 12.6

Gravity: 5.22 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.89 AU - 1.19 AU

Year: 696 Days

Day: 10.4 Hours

Environment

Temp: -157 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 59,136,567 km

• M1: 156,779 km (0.084 R)
• M2: 720,314 km (0.048 R)
• M3: 1,136,645 km (0.119 R)
• M4: 1,552,826 km (0.109 R)
• M5: 2,016,878 km (0.033 R)
• M6: 2,422,588 km (0.116 R)
• M7: 3,004,823 km (0.097 R)
• M8: 4,136,531 km (0.117 R)
• M9: 5,167,260 km (0.045 R)
• M10: 5,958,034 km (0.112 R)
• M11: 6,549,844 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 755

Radius: 9.8

Gravity: 7.86 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.09 AU - 1.21 AU

Year: 809 Days

Day: 5.3 Hours

Environment

Temp: -162 °C

Axial Tilt: 41 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 59,136,567 km

• M1: 122,521 km (0.102 R)
• M2: 584,778 km (0.12 R)
• M3: 1,064,688 km (0.074 R)
• M4: 1,392,307 km (0.109 R)
• M5: 1,718,431 km (0.064 R)
• M6: 2,279,124 km (0.073 R)
• M7: 2,655,063 km (0.088 R)
• M8: 3,085,456 km (0.089 R)
• M9: 3,692,075 km (0.083 R)
• M10: 5,179,677 km (0.074 R)
• M11: 5,814,420 km (0.093 R)
• M12: 6,182,132 km (0.106 R)
• M13: 7,054,886 km (0.117 R)
• M14: 7,473,610 km (0.058 R)
• M15: 8,233,418 km (0.079 R)
• M16: 8,567,171 km (0.042 R)
• M17: 9,207,001 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 455.6

Radius: 8.4

Gravity: 6.46 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.66 AU - 2.38 AU

Year: 1883 Days

Day: 12.2 Hours

Environment

Temp: -188 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 59,136,567 km

• M1: 104,719 km (0.106 R)
• M2: 433,834 km (0.083 R)
• M3: 789,877 km (0.047 R)
• M4: 1,166,564 km (0.117 R)
• M5: 1,548,188 km (0.079 R)
• M6: 1,893,011 km (0.114 R)
• M7: 2,436,800 km (0.108 R)
• M8: 3,007,366 km (0.063 R)
• M9: 3,955,816 km (0.093 R)
• M10: 4,319,040 km (0.045 R)
• M11: 4,824,232 km (0.102 R)
• M12: 5,677,838 km (0.109 R)
• M13: 6,959,443 km (0.064 R)
• M14: 7,905,350 km (0.047 R)
• M15: 8,190,783 km (0.072 R)
• M16: 9,088,370 km (0.051 R)
• M17: 10,972,405 km (0.078 R)
• M18: 12,326,416 km (0.029 R)
• M19: 12,905,808 km (0.1 R)
• M20: 13,503,302 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 730.9

Radius: 10.1

Gravity: 7.16 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 4.09 AU - 4.67 AU

Year: 6013 Days

Day: 11.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 59,136,567 km

• M1: 125,961 km (0.1 R)
• M2: 554,260 km (0.092 R)
• M3: 1,000,211 km (0.072 R)
• M4: 1,456,335 km (0.115 R)
• M5: 3,047,309 km (0.09 R)
• M6: 3,466,033 km (0.11 R)
• M7: 5,570,277 km (0.115 R)
• M8: 6,264,560 km (0.08 R)
• M9: 8,292,509 km (0.072 R)
• M10: 8,655,134 km (0.05 R)
• M11: 10,167,270 km (0.109 R)
• M12: 11,106,744 km (0.11 R)
• M13: 11,797,886 km (0.109 R)
• M14: 12,257,302 km (0.106 R)
• M15: 13,266,339 km (0.083 R)
• M16: 13,819,103 km (0.104 R)
• M17: 14,387,276 km (0.09 R)
• M18: 15,388,834 km (0.105 R)
• M19: 16,373,188 km (0.077 R)
• M20: 18,331,424 km (0.106 R)
• M21: 20,078,577 km (0.054 R)
• M22: 22,395,848 km (0.055 R)
• M23: 32,352,484 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 948.5

Radius: 13.3

Gravity: 5.36 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 3.74 AU - 5.08 AU

Year: 6075 Days

Day: 8.4 Hours

Environment

Temp: -206 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 59,136,567 km

• M1: 169,943 km (0.076 R)
• M2: 611,706 km (0.091 R)
• M3: 1,175,241 km (0.066 R)
• M4: 2,259,227 km (0.065 R)
• M5: 3,012,602 km (0.119 R)
• M6: 3,736,057 km (0.092 R)
• M7: 4,491,676 km (0.113 R)
• M8: 4,992,530 km (0.093 R)
• M9: 5,499,816 km (0.115 R)
• M10: 7,121,008 km (0.077 R)
• M11: 9,526,093 km (0.037 R)
• M12: 11,285,813 km (0.054 R)
• M13: 13,535,915 km (0.077 R)
• M14: 15,690,573 km (0.064 R)
• M15: 16,587,262 km (0.069 R)
• M16: 19,556,032 km (0.108 R)
• M17: 21,904,719 km (0.103 R)
• M18: 24,014,946 km (0.114 R)
• M19: 25,119,427 km (0.116 R)
• M20: 25,553,261 km (0.094 R)
• M21: 27,065,396 km (0.109 R)
• M22: 28,354,930 km (0.026 R)
• M23: 30,170,001 km (0.064 R)
• M24: 30,857,852 km (0.079 R)
• M25: 33,819,441 km (0.039 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 643.1

Radius: 8.3

Gravity: 9.34 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 3.46 AU - 5.44 AU

Year: 6158 Days

Day: 9.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 59,136,567 km

• M1: 107,262 km (0.1 R)
• M2: 777,311 km (0.111 R)
• M3: 1,092,812 km (0.086 R)
• M4: 1,580,352 km (0.108 R)
• M5: 2,051,136 km (0.069 R)
• M6: 2,506,512 km (0.108 R)
• M7: 3,293,547 km (0.12 R)
• M8: 3,779,141 km (0.06 R)
• M9: 4,543,437 km (0.108 R)
• M10: 5,862,142 km (0.096 R)
• M11: 6,179,589 km (0.094 R)
• M12: 9,796,417 km (0.073 R)
• M13: 13,387,513 km (0.101 R)
• M14: 14,107,977 km (0.112 R)
• M15: 16,865,664 km (0.104 R)
• M16: 17,903,574 km (0.049 R)
• M17: 20,393,631 km (0.095 R)
• M18: 21,050,365 km (0.075 R)
• M19: 24,547,963 km (0.055 R)
• M20: 28,234,653 km (0.053 R)
• M21: 32,274,544 km (0.117 R)
• M22: 32,966,733 km (0.094 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 654.8

Radius: 4

Gravity: 40.93 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 7.03 AU - 7.85 AU

Year: 13313 Days

Day: 17.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 59,136,567 km

• M1: 49,816 km (0.078 R)
• M2: 227,389 km (0.044 R)
• M3: 506,538 km (0.072 R)
• M4: 762,650 km (0.09 R)
• M5: 1,399,338 km (0.049 R)
• M6: 1,545,496 km (0.057 R)
• M7: 1,800,410 km (0.084 R)
• M8: 2,313,531 km (0.065 R)
• M9: 2,713,406 km (0.098 R)
• M10: 3,084,558 km (0.029 R)
• M11: 3,927,243 km (0.079 R)
• M12: 4,189,638 km (0.113 R)
• M13: 5,114,751 km (0.099 R)
• M14: 5,498,769 km (0.083 R)
• M15: 6,053,179 km (0.117 R)
• M16: 6,684,631 km (0.102 R)
• M17: 7,143,448 km (0.113 R)
• M18: 7,623,059 km (0.036 R)
• M19: 9,393,849 km (0.044 R)
• M20: 11,017,135 km (0.095 R)
• M21: 12,944,853 km (0.054 R)
• M22: 14,055,169 km (0.1 R)
• M23: 15,227,418 km (0.101 R)
• M24: 17,375,045 km (0.085 R)
• M25: 17,922,124 km (0.084 R)
• M26: 18,723,520 km (0.07 R)
• M27: 21,270,424 km (0.112 R)
• M28: 24,135,372 km (0.112 R)
• M29: 27,142,738 km (0.111 R)
• M30: 27,667,079 km (0.054 R)
• M31: 29,832,209 km (0.116 R)
• M32: 38,035,109 km (0.108 R)
• M33: 38,165,858 km (0.12 R)
• M34: 50,718,914 km (0.051 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 554.2

Radius: 6.2

Gravity: 14.42 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 6.59 AU - 9.69 AU

Year: 15235 Days

Day: 15.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 59,136,567 km

• M1: 96,491 km (0.112 R)
• M2: 347,217 km (0.101 R)
• M3: 731,982 km (0.1 R)
• M4: 1,905,578 km (0.119 R)
• M5: 2,238,283 km (0.047 R)
• M6: 2,809,747 km (0.118 R)
• M7: 3,661,857 km (0.054 R)
• M8: 4,207,440 km (0.068 R)
• M9: 6,406,678 km (0.05 R)
• M10: 8,574,501 km (0.108 R)
• M11: 9,019,854 km (0.081 R)
• M12: 11,481,487 km (0.083 R)
• M13: 13,090,861 km (0.091 R)
• M14: 17,681,421 km (0.064 R)
• M15: 21,125,912 km (0.092 R)
• M16: 37,380,768 km (0.099 R)
• M17: 40,187,374 km (0.118 R)
• M18: 40,875,823 km (0.095 R)
• M19: 48,662,841 km (0.085 R)
• M20: 49,287,711 km (0.081 R)
• M21: 54,816,849 km (0.049 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: 266 - 11,211 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit