🌌 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: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.65

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.58 AU - 0.64 AU

Year: 308 Days

Day: 13.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 35.5 °

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: 340.5

Radius: 13.2

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.63 AU - 0.97 AU

Year: 462 Days

Day: 5.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 37.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 80,506,907 km

• M1: 164,258 km (0.081 R)
• M2: 887,714 km (0.105 R)
• M3: 1,328,728 km (0.117 R)
• M4: 1,876,705 km (0.115 R)
• M5: 2,440,988 km (0.089 R)
• M6: 2,994,650 km (0.113 R)
• M7: 3,940,109 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 759.7

Radius: 8.7

Gravity: 10.04 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.77 AU - 0.99 AU

Year: 533 Days

Day: 12.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 80,506,907 km

• M1: 108,458 km (0.088 R)
• M2: 387,458 km (0.119 R)
• M3: 717,920 km (0.099 R)
• M4: 1,069,924 km (0.103 R)
• M5: 1,610,122 km (0.078 R)
• M6: 2,189,215 km (0.065 R)
• M7: 2,855,524 km (0.051 R)
• M8: 3,304,019 km (0.098 R)
• M9: 3,965,092 km (0.107 R)
• M10: 4,664,312 km (0.113 R)
• M11: 5,236,673 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 126

Radius: 15

Gravity: 0.56 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.8 AU - 1.2 AU

Year: 646 Days

Day: 10.4 Hours

Environment

Temp: -165 °C

Axial Tilt: 135.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 80,506,907 km

• M1: 186,549 km (0.111 R)
• M2: 702,212 km (0.087 R)
• M3: 1,444,367 km (0.106 R)
• M4: 2,119,353 km (0.118 R)
• M5: 2,849,241 km (0.097 R)
• M6: 3,352,189 km (0.117 R)
• M7: 3,903,158 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 366

Radius: 12.1

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 1.43 AU - 2.21 AU

Year: 1585 Days

Day: 14.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 80,506,907 km

• M1: 150,795 km (0.06 R)
• M2: 565,630 km (0.082 R)
• M3: 959,820 km (0.117 R)
• M4: 1,473,240 km (0.097 R)
• M5: 1,940,584 km (0.081 R)
• M6: 2,436,052 km (0.076 R)
• M7: 4,277,302 km (0.07 R)
• M8: 4,799,249 km (0.077 R)
• M9: 5,283,198 km (0.103 R)
• M10: 6,015,330 km (0.079 R)
• M11: 6,463,376 km (0.1 R)
• M12: 7,152,873 km (0.089 R)
• M13: 8,156,674 km (0.069 R)
• M14: 9,881,239 km (0.099 R)
• M15: 10,570,885 km (0.113 R)
• M16: 11,158,804 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 962.2

Radius: 9.5

Gravity: 10.66 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 1.95 AU - 2.55 AU

Year: 2179 Days

Day: 14.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 80,506,907 km

• M1: 118,332 km (0.079 R)
• M2: 542,292 km (0.073 R)
• M3: 1,282,054 km (0.075 R)
• M4: 1,697,637 km (0.085 R)
• M5: 1,998,777 km (0.099 R)
• M6: 2,591,783 km (0.111 R)
• M7: 3,076,779 km (0.115 R)
• M8: 3,547,714 km (0.1 R)
• M9: 4,354,495 km (0.09 R)
• M10: 4,767,684 km (0.098 R)
• M11: 5,424,269 km (0.051 R)
• M12: 7,004,322 km (0.113 R)
• M13: 8,566,273 km (0.102 R)
• M14: 9,322,491 km (0.113 R)
• M15: 9,753,183 km (0.074 R)
• M16: 11,652,029 km (0.107 R)
• M17: 12,152,134 km (0.036 R)
• M18: 13,693,291 km (0.034 R)
• M19: 14,486,908 km (0.109 R)
• M20: 16,423,602 km (0.104 R)
• M21: 17,480,960 km (0.109 R)
• M22: 19,036,628 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35.5

Radius: 11.9

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 3.19 AU - 3.33 AU

Year: 3801 Days

Day: 14.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 80,506,907 km

• M1: 149,448 km (0.1 R)
• M2: 547,079 km (0.061 R)
• M3: 1,155,943 km (0.071 R)
• M4: 1,875,060 km (0.099 R)
• M5: 3,340,520 km (0.059 R)
• M6: 4,802,391 km (0.066 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 684.7

Radius: 7.7

Gravity: 11.55 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 6.37 AU - 7.27 AU

Year: 11500 Days

Day: 19.6 Hours

Environment

Temp: -230 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 80,506,907 km

• M1: 96,042 km (0.109 R)
• M2: 886,966 km (0.109 R)
• M3: 1,211,743 km (0.032 R)
• M4: 1,784,403 km (0.101 R)
• M5: 2,123,392 km (0.056 R)
• M6: 3,045,813 km (0.053 R)
• M7: 3,930,834 km (0.072 R)
• M8: 4,417,924 km (0.116 R)
• M9: 4,691,838 km (0.102 R)
• M10: 5,902,982 km (0.06 R)
• M11: 6,818,222 km (0.118 R)
• M12: 7,564,566 km (0.048 R)
• M13: 12,549,915 km (0.1 R)
• M14: 15,192,113 km (0.097 R)
• M15: 16,679,415 km (0.114 R)
• M16: 17,047,425 km (0.099 R)
• M17: 17,496,069 km (0.099 R)
• M18: 17,799,603 km (0.116 R)
• M19: 18,889,574 km (0.101 R)
• M20: 20,439,108 km (0.116 R)
• M21: 20,775,853 km (0.051 R)
• M22: 22,874,412 km (0.042 R)
• M23: 30,120,185 km (0.046 R)
• M24: 30,446,907 km (0.095 R)
• M25: 30,886,276 km (0.062 R)
• M26: 40,718,446 km (0.108 R)
• M27: 41,251,762 km (0.067 R)
• M28: 42,060,489 km (0.108 R)
• M29: 48,615,269 km (0.114 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 822.1

Radius: 8

Gravity: 12.85 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 8.42 AU - 11.22 AU

Year: 19869 Days

Day: 20.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 41.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 80,506,907 km

• M1: 104,270 km (0.057 R)
• M2: 1,512,734 km (0.096 R)
• M3: 2,020,319 km (0.1 R)
• M4: 2,358,560 km (0.074 R)
• M5: 2,784,016 km (0.1 R)
• M6: 3,259,887 km (0.101 R)
• M7: 3,517,495 km (0.113 R)
• M8: 4,476,866 km (0.12 R)
• M9: 5,284,246 km (0.027 R)
• M10: 5,722,717 km (0.115 R)
• M11: 9,386,668 km (0.118 R)
• M12: 16,951,683 km (0.108 R)
• M13: 18,986,064 km (0.055 R)
• M14: 23,427,027 km (0.108 R)
• M15: 26,170,951 km (0.084 R)
• M16: 28,394,573 km (0.119 R)
• M17: 29,613,946 km (0.118 R)
• M18: 30,614,307 km (0.067 R)
• M19: 36,951,272 km (0.057 R)
• M20: 42,358,188 km (0.087 R)
• M21: 52,321,107 km (0.098 R)
• M22: 58,132,237 km (0.112 R)
• M23: 58,521,341 km (0.039 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: 354 - 19,427 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit