🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.51 AU - 0.59 AU

Year: 151 Days

Day: 19.3 Hours

Environment

Temp: 203 °C

Axial Tilt: 32.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.24

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.33 AU - 1.51 AU

Year: 628 Days

Day: 40.8 Hours

Environment

Temp: -28 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 3.35 AU - 4.23 AU

Year: 2736 Days

Day: 40.9 Hours

Environment

Temp: -124 °C

Axial Tilt: 23.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 42,837,895 km

• M1: 44,281 km (0.117 R)

Planet 4 - Terrestrial

Semi-Major Axis: 4.18 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.21

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 3.5 AU - 4.86 AU

Year: 3169 Days

Day: 13.6 Hours

Environment

Temp: -126 °C

Axial Tilt: 25.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 4.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122

Radius: 9.1

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 4.14 AU - 5.58 AU

Year: 3973 Days

Day: 5.2 Hours

Environment

Temp: -138 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,837,895 km

• M1: 155,432 km (0.088 R)
• M2: 462,257 km (0.086 R)
• M3: 1,124,527 km (0.097 R)
• M4: 1,586,186 km (0.098 R)
• M5: 2,100,205 km (0.094 R)
• M6: 5,267,640 km (0.058 R)
• M7: 8,145,903 km (0.105 R)
• M8: 8,870,107 km (0.113 R)
• M9: 13,641,979 km (0.053 R)
• M10: 14,532,386 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 862

Radius: 14.7

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 4.42 AU - 5.92 AU

Year: 4360 Days

Day: 10.5 Hours

Environment

Temp: -154 °C

Axial Tilt: 9.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 42,837,895 km

• M1: 182,809 km (0.083 R)
• M2: 661,671 km (0.109 R)
• M3: 1,188,555 km (0.104 R)
• M4: 1,742,217 km (0.094 R)
• M5: 2,405,085 km (0.09 R)
• M6: 3,856,932 km (0.062 R)
• M7: 5,745,905 km (0.047 R)
• M8: 6,225,067 km (0.09 R)
• M9: 6,796,231 km (0.085 R)
• M10: 7,862,116 km (0.099 R)
• M11: 8,918,127 km (0.112 R)
• M12: 12,908,950 km (0.072 R)
• M13: 14,873,170 km (0.101 R)
• M14: 15,550,998 km (0.037 R)
• M15: 16,427,342 km (0.109 R)
• M16: 19,521,026 km (0.053 R)
• M17: 23,510,502 km (0.096 R)
• M18: 24,900,566 km (0.057 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 437.8

Radius: 14.1

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 5.97 AU - 8.43 AU

Year: 7165 Days

Day: 7.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 42,837,895 km

• M1: 175,478 km (0.09 R)
• M2: 683,064 km (0.092 R)
• M3: 1,232,836 km (0.116 R)
• M4: 1,696,889 km (0.092 R)
• M5: 2,171,413 km (0.094 R)
• M6: 2,863,453 km (0.118 R)
• M7: 3,857,680 km (0.109 R)
• M8: 5,071,069 km (0.097 R)
• M9: 5,527,941 km (0.09 R)
• M10: 9,416,139 km (0.098 R)
• M11: 11,262,326 km (0.112 R)
• M12: 12,347,359 km (0.08 R)
• M13: 14,497,081 km (0.052 R)
• M14: 15,961,345 km (0.112 R)
• M15: 18,240,468 km (0.096 R)
• M16: 18,978,135 km (0.047 R)
• M17: 19,805,561 km (0.117 R)
• M18: 20,800,986 km (0.065 R)
• M19: 23,357,763 km (0.089 R)
• M20: 24,068,203 km (0.03 R)
• M21: 29,726,144 km (0.088 R)
• M22: 33,059,633 km (0.1 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.8

Radius: 13.6

Gravity: 3.03 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 6.92 AU - 7.54 AU

Year: 7210 Days

Day: 10 Hours

Environment

Temp: -158 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 42,837,895 km

• M1: 175,478 km (0.069 R)
• M2: 646,562 km (0.069 R)
• M3: 1,156,990 km (0.075 R)
• M4: 1,773,632 km (0.049 R)
• M5: 2,845,202 km (0.034 R)
• M6: 3,892,537 km (0.111 R)
• M7: 4,571,861 km (0.087 R)
• M8: 5,270,183 km (0.084 R)
• M9: 6,103,294 km (0.063 R)
• M10: 6,951,514 km (0.094 R)
• M11: 8,349,356 km (0.047 R)
• M12: 10,715,695 km (0.118 R)
• M13: 12,575,795 km (0.099 R)
• M14: 13,168,203 km (0.079 R)
• M15: 15,481,136 km (0.069 R)
• M16: 16,036,742 km (0.08 R)
• M17: 18,120,940 km (0.098 R)
• M18: 19,583,259 km (0.115 R)
• M19: 20,600,973 km (0.116 R)
• M20: 23,460,686 km (0.062 R)
• M21: 24,775,651 km (0.108 R)
• M22: 25,366,264 km (0.113 R)
• M23: 29,956,226 km (0.076 R)
• M24: 35,284,154 km (0.102 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 331.2

Radius: 4.1

Gravity: 19.7 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 11.11 AU - 14.25 AU

Year: 16745 Days

Day: 19.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 42,837,895 km

• M1: 51,312 km (0.113 R)
• M2: 438,023 km (0.114 R)
• M3: 830,418 km (0.084 R)
• M4: 1,048,531 km (0.112 R)
• M5: 1,252,284 km (0.083 R)
• M6: 2,482,726 km (0.101 R)
• M7: 3,028,609 km (0.071 R)
• M8: 3,442,995 km (0.119 R)
• M9: 5,076,305 km (0.097 R)
• M10: 5,912,257 km (0.075 R)
• M11: 6,795,932 km (0.096 R)
• M12: 9,814,518 km (0.119 R)
• M13: 10,935,904 km (0.115 R)
• M14: 12,140,166 km (0.041 R)
• M15: 12,560,387 km (0.07 R)
• M16: 13,814,615 km (0.103 R)
• M17: 15,637,017 km (0.042 R)
• M18: 21,181,263 km (0.105 R)
• M19: 24,721,347 km (0.077 R)
• M20: 25,786,933 km (0.059 R)
• M21: 28,008,910 km (0.112 R)
• M22: 30,795,619 km (0.085 R)
• M23: 31,128,624 km (0.034 R)
• M24: 37,162,654 km (0.105 R)
• M25: 37,793,060 km (0.113 R)
• M26: 40,121,700 km (0.112 R)
• M27: 40,785,017 km (0.068 R)
• M28: 46,941,568 km (0.086 R)
• M29: 49,174,017 km (0.101 R)

Planet 10 - Ice Giant

Semi-Major Axis: 18.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 56.7

Radius: 7.8

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 13.96 AU - 22.92 AU

Year: 29366 Days

Day: 15.3 Hours

Environment

Temp: -209 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 42,837,895 km

• M1: 108,758 km (0.094 R)
• M2: 476,170 km (0.052 R)
• M3: 1,055,563 km (0.094 R)
• M4: 2,074,623 km (0.062 R)
• M5: 2,936,307 km (0.104 R)
• M6: 3,286,216 km (0.115 R)
• M7: 3,590,947 km (0.112 R)
• M8: 4,620,031 km (0.06 R)
• M9: 5,375,799 km (0.025 R)
• M10: 7,246,820 km (0.12 R)
• M11: 8,137,975 km (0.095 R)
• M12: 10,087,534 km (0.107 R)
• M13: 13,067,374 km (0.117 R)
• M14: 17,557,404 km (0.106 R)
• M15: 21,980,266 km (0.107 R)
• M16: 23,835,878 km (0.09 R)
• M17: 26,160,479 km (0.107 R)
• M18: 40,201,436 km (0.104 R)
• M19: 41,317,586 km (0.078 R)
• M20: 42,073,204 km (0.104 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 401 - 11,712 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit