🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.43

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.56 AU - 0.6 AU

Year: 290 Days

Day: 33.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 16.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 50.6

Radius: 10

Gravity: 0.51 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.67 AU - 0.77 AU

Year: 401 Days

Day: 12.4 Hours

Environment

Temp: -130 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 56,833,773 km

• M1: 124,465 km (0.114 R)
• M2: 483,500 km (0.069 R)
• M3: 879,785 km (0.101 R)
• M4: 1,215,931 km (0.071 R)
• M5: 1,901,539 km (0.074 R)
• M6: 2,262,967 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 237.9

Radius: 8.1

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.72 AU - 1.06 AU

Year: 551 Days

Day: 10.5 Hours

Environment

Temp: -144 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,833,773 km

• M1: 100,679 km (0.084 R)
• M2: 390,750 km (0.12 R)
• M3: 655,837 km (0.074 R)
• M4: 1,697,337 km (0.08 R)
• M5: 1,982,022 km (0.095 R)
• M6: 2,247,708 km (0.118 R)
• M7: 2,574,131 km (0.108 R)
• M8: 3,479,646 km (0.112 R)
• M9: 4,366,612 km (0.059 R)
• M10: 4,707,546 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.4

Radius: 11.5

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 2.71 AU - 3.91 AU

Year: 3950 Days

Day: 12.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,833,773 km

• M1: 143,165 km (0.074 R)
• M2: 579,692 km (0.118 R)
• M3: 1,019,659 km (0.066 R)
• M4: 1,674,748 km (0.108 R)
• M5: 2,080,158 km (0.074 R)
• M6: 3,076,630 km (0.118 R)
• M7: 4,140,271 km (0.043 R)
• M8: 5,099,343 km (0.034 R)
• M9: 5,911,509 km (0.098 R)
• M10: 6,666,680 km (0.099 R)
• M11: 7,185,186 km (0.11 R)
• M12: 9,007,288 km (0.096 R)
• M13: 9,534,022 km (0.107 R)
• M14: 10,081,251 km (0.055 R)
• M15: 13,955,088 km (0.094 R)
• M16: 14,613,468 km (0.069 R)
• M17: 15,739,790 km (0.092 R)
• M18: 16,557,044 km (0.12 R)
• M19: 17,563,837 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 506.6

Radius: 14.4

Gravity: 2.44 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 3.31 AU - 3.61 AU

Year: 4222 Days

Day: 14.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,833,773 km

• M1: 179,218 km (0.06 R)
• M2: 693,835 km (0.069 R)
• M3: 1,290,132 km (0.075 R)
• M4: 1,860,399 km (0.028 R)
• M5: 3,063,166 km (0.1 R)
• M6: 3,584,066 km (0.098 R)
• M7: 4,077,589 km (0.113 R)
• M8: 4,593,403 km (0.081 R)
• M9: 5,357,698 km (0.032 R)
• M10: 6,091,326 km (0.102 R)
• M11: 6,984,126 km (0.08 R)
• M12: 7,928,687 km (0.078 R)
• M13: 9,407,313 km (0.091 R)
• M14: 10,684,130 km (0.098 R)
• M15: 13,482,358 km (0.109 R)
• M16: 14,429,911 km (0.113 R)
• M17: 16,907,851 km (0.086 R)
• M18: 18,367,627 km (0.1 R)
• M19: 22,555,170 km (0.036 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35.5

Radius: 9.1

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 3.69 AU - 3.85 AU

Year: 4802 Days

Day: 6.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,833,773 km

• M1: 114,293 km (0.031 R)
• M2: 455,376 km (0.119 R)
• M3: 1,101,489 km (0.098 R)
• M4: 1,452,595 km (0.098 R)
• M5: 2,420,793 km (0.07 R)
• M6: 3,105,353 km (0.105 R)
• M7: 3,769,717 km (0.107 R)
• M8: 5,006,891 km (0.092 R)
• M9: 9,441,271 km (0.036 R)
• M10: 10,258,524 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.1

Radius: 13.2

Gravity: 2.83 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 4.06 AU - 4.1 AU

Year: 5406 Days

Day: 13.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,833,773 km

• M1: 166,203 km (0.102 R)
• M2: 841,189 km (0.064 R)
• M3: 1,411,007 km (0.073 R)
• M4: 1,978,282 km (0.098 R)
• M5: 3,643,905 km (0.099 R)
• M6: 4,336,393 km (0.051 R)
• M7: 5,580,898 km (0.081 R)
• M8: 6,566,299 km (0.098 R)
• M9: 7,285,566 km (0.099 R)
• M10: 8,765,837 km (0.077 R)
• M11: 12,362,918 km (0.079 R)
• M12: 13,155,038 km (0.11 R)
• M13: 15,227,717 km (0.088 R)
• M14: 17,509,982 km (0.084 R)
• M15: 19,087,940 km (0.114 R)
• M16: 20,690,134 km (0.078 R)
• M17: 21,243,496 km (0.086 R)
• M18: 24,389,689 km (0.074 R)
• M19: 24,929,588 km (0.049 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 51.4

Radius: 8.7

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 4.25 AU - 4.87 AU

Year: 6388 Days

Day: 11.3 Hours

Environment

Temp: -221 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,833,773 km

• M1: 108,159 km (0.075 R)
• M2: 1,060,948 km (0.059 R)
• M3: 2,153,611 km (0.062 R)
• M4: 3,028,011 km (0.072 R)
• M5: 4,506,037 km (0.107 R)
• M6: 5,595,708 km (0.079 R)
• M7: 6,617,611 km (0.08 R)
• M8: 9,154,492 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 649.5

Radius: 7.5

Gravity: 11.55 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 6.51 AU - 8.33 AU

Year: 13259 Days

Day: 24.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 2.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 56,833,773 km

• M1: 93,349 km (0.032 R)
• M2: 357,539 km (0.105 R)
• M3: 689,197 km (0.076 R)
• M4: 1,299,258 km (0.103 R)
• M5: 2,169,618 km (0.09 R)
• M6: 2,546,904 km (0.081 R)
• M7: 3,061,520 km (0.067 R)
• M8: 3,806,967 km (0.06 R)
• M9: 4,237,360 km (0.11 R)
• M10: 4,636,038 km (0.077 R)
• M11: 5,298,308 km (0.035 R)
• M12: 6,135,906 km (0.112 R)
• M13: 8,117,629 km (0.09 R)
• M14: 10,381,494 km (0.05 R)
• M15: 11,049,897 km (0.109 R)
• M16: 15,675,613 km (0.038 R)
• M17: 19,388,931 km (0.085 R)
• M18: 21,183,358 km (0.109 R)
• M19: 22,257,171 km (0.038 R)
• M20: 24,415,719 km (0.091 R)
• M21: 25,997,118 km (0.066 R)
• M22: 33,364,514 km (0.072 R)
• M23: 37,457,063 km (0.111 R)
• M24: 37,974,821 km (0.091 R)
• M25: 39,556,669 km (0.08 R)
• M26: 42,710,491 km (0.115 R)
• M27: 46,920,774 km (0.052 R)
• M28: 48,281,666 km (0.084 R)
• M29: 52,039,115 km (0.097 R)
• M30: 52,845,747 km (0.037 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 538 - 19,469 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit