🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.4

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.49 AU - 0.79 AU

Year: 331 Days

Day: 44.5 Hours

Environment

Temp: -124 °C

Axial Tilt: 2.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 103.7

Radius: 11.8

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.54 AU - 0.82 AU

Year: 362 Days

Day: 8.2 Hours

Environment

Temp: -142 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 42,171,425 km

• M1: 146,756 km (0.069 R)
• M2: 534,513 km (0.077 R)
• M3: 929,302 km (0.085 R)
• M4: 1,705,715 km (0.1 R)
• M5: 2,156,304 km (0.079 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 360

Radius: 13.1

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.78 AU - 0.88 AU

Year: 488 Days

Day: 14.2 Hours

Environment

Temp: -146 °C

Axial Tilt: 87.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,171,425 km

• M1: 163,211 km (0.079 R)
• M2: 577,747 km (0.109 R)
• M3: 1,046,437 km (0.051 R)
• M4: 2,101,700 km (0.025 R)
• M5: 2,639,654 km (0.105 R)
• M6: 3,279,784 km (0.109 R)
• M7: 3,884,458 km (0.044 R)
• M8: 4,466,992 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.9

Radius: 13.9

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.23 AU - 1.37 AU

Year: 957 Days

Day: 9.5 Hours

Environment

Temp: -171 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 42,171,425 km

• M1: 173,085 km (0.098 R)
• M2: 660,475 km (0.107 R)
• M3: 1,351,467 km (0.053 R)
• M4: 1,958,984 km (0.075 R)
• M5: 2,544,809 km (0.086 R)
• M6: 3,007,216 km (0.104 R)
• M7: 3,764,481 km (0.083 R)
• M8: 4,481,952 km (0.085 R)
• M9: 5,510,138 km (0.099 R)
• M10: 6,499,878 km (0.072 R)
• M11: 8,301,335 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 137.5

Radius: 9.8

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 1.5 AU - 1.56 AU

Year: 1222 Days

Day: 6 Hours

Environment

Temp: -181 °C

Axial Tilt: 20.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 42,171,425 km

• M1: 121,922 km (0.118 R)
• M2: 533,915 km (0.089 R)
• M3: 1,339,948 km (0.086 R)
• M4: 1,986,361 km (0.119 R)
• M5: 3,456,459 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 70.2

Radius: 10.6

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.57 AU - 2.43 AU

Year: 1826 Days

Day: 13.4 Hours

Environment

Temp: -197 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 42,171,425 km

• M1: 131,796 km (0.04 R)
• M2: 578,645 km (0.116 R)
• M3: 1,145,920 km (0.081 R)
• M4: 1,514,828 km (0.078 R)
• M5: 2,051,735 km (0.029 R)
• M6: 4,170,340 km (0.096 R)
• M7: 4,767,535 km (0.042 R)
• M8: 5,420,828 km (0.112 R)
• M9: 6,601,305 km (0.078 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 593.1

Radius: 13.6

Gravity: 3.21 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 2.93 AU - 3.47 AU

Year: 3696 Days

Day: 14.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 42,171,425 km

• M1: 169,943 km (0.108 R)
• M2: 618,737 km (0.094 R)
• M3: 1,047,335 km (0.079 R)
• M4: 1,630,766 km (0.064 R)
• M5: 2,213,749 km (0.062 R)
• M6: 2,801,370 km (0.107 R)
• M7: 3,491,764 km (0.078 R)
• M8: 4,337,740 km (0.045 R)
• M9: 5,114,602 km (0.066 R)
• M10: 5,655,996 km (0.097 R)
• M11: 6,094,019 km (0.112 R)
• M12: 6,763,619 km (0.083 R)
• M13: 9,071,166 km (0.071 R)
• M14: 9,984,760 km (0.045 R)
• M15: 11,555,837 km (0.048 R)
• M16: 12,084,666 km (0.072 R)
• M17: 12,861,527 km (0.077 R)
• M18: 13,671,450 km (0.078 R)
• M19: 14,975,644 km (0.094 R)
• M20: 17,141,822 km (0.116 R)
• M21: 18,359,249 km (0.115 R)
• M22: 19,571,590 km (0.114 R)
• M23: 20,901,216 km (0.104 R)
• M24: 23,459,190 km (0.107 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 166.6

Radius: 9.5

Gravity: 1.85 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 3.53 AU - 4.01 AU

Year: 4726 Days

Day: 11.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 42,171,425 km

• M1: 118,182 km (0.081 R)
• M2: 413,638 km (0.1 R)
• M3: 802,293 km (0.101 R)
• M4: 1,246,749 km (0.085 R)
• M5: 2,175,751 km (0.118 R)
• M6: 4,014,010 km (0.097 R)
• M7: 5,327,031 km (0.099 R)
• M8: 7,880,367 km (0.09 R)
• M9: 15,387,338 km (0.09 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 898.8

Radius: 12

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 3.71 AU - 5.35 AU

Year: 6225 Days

Day: 14.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 6.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 42,171,425 km

• M1: 202,705 km (0.049 R)
• M2: 612,902 km (0.106 R)
• M3: 1,040,752 km (0.079 R)
• M4: 1,660,387 km (0.066 R)
• M5: 2,111,125 km (0.106 R)
• M6: 2,533,739 km (0.091 R)
• M7: 3,200,347 km (0.069 R)
• M8: 3,668,439 km (0.104 R)
• M9: 4,416,728 km (0.101 R)
• M10: 5,790,784 km (0.118 R)
• M11: 7,936,466 km (0.105 R)
• M12: 9,100,637 km (0.08 R)
• M13: 9,678,384 km (0.081 R)
• M14: 10,327,938 km (0.105 R)
• M15: 12,614,242 km (0.111 R)
• M16: 14,255,331 km (0.11 R)
• M17: 15,096,669 km (0.078 R)
• M18: 17,010,923 km (0.08 R)
• M19: 19,808,104 km (0.1 R)
• M20: 20,552,653 km (0.103 R)
• M21: 21,626,317 km (0.076 R)
• M22: 22,256,423 km (0.041 R)
• M23: 28,396,817 km (0.043 R)
• M24: 33,655,931 km (0.099 R)
• M25: 36,791,951 km (0.087 R)
• M26: 37,351,596 km (0.035 R)
• M27: 38,258,907 km (0.057 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.9

Radius: 13.2

Gravity: 4.01 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 4.43 AU - 6.43 AU

Year: 8170 Days

Day: 10 Hours

Environment

Temp: -216 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 42,171,425 km

• M1: 190,887 km (0.064 R)
• M2: 828,473 km (0.113 R)
• M3: 1,527,843 km (0.104 R)
• M4: 2,223,623 km (0.07 R)
• M5: 3,059,276 km (0.11 R)
• M6: 3,767,024 km (0.111 R)
• M7: 4,927,006 km (0.038 R)
• M8: 5,478,274 km (0.085 R)
• M9: 7,268,063 km (0.113 R)
• M10: 8,835,549 km (0.076 R)
• M11: 11,488,668 km (0.07 R)
• M12: 13,489,539 km (0.094 R)
• M13: 19,642,350 km (0.12 R)
• M14: 27,540,968 km (0.065 R)
• M15: 28,499,142 km (0.07 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 171 - 16,806 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit