🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.53 AU - 0.79 AU

Year: 346 Days

Day: 24.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 7.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.4

Radius: 12.9

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.7 AU - 0.8 AU

Year: 419 Days

Day: 7.6 Hours

Environment

Temp: -149 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,762,420 km

• M1: 160,369 km (0.09 R)
• M2: 595,848 km (0.119 R)
• M3: 1,002,306 km (0.118 R)
• M4: 1,419,684 km (0.069 R)
• M5: 2,677,353 km (0.117 R)
• M6: 3,340,820 km (0.079 R)
• M7: 3,898,670 km (0.094 R)
• M8: 4,417,625 km (0.054 R)
• M9: 4,936,281 km (0.106 R)
• M10: 5,347,675 km (0.045 R)
• M11: 5,920,485 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 675.5

Radius: 8.9

Gravity: 8.53 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.81 AU - 1.31 AU

Year: 705 Days

Day: 13.8 Hours

Environment

Temp: -160 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 45,762,420 km

• M1: 111,002 km (0.074 R)
• M2: 412,591 km (0.105 R)
• M3: 718,369 km (0.096 R)
• M4: 1,061,098 km (0.079 R)
• M5: 1,637,049 km (0.086 R)
• M6: 2,387,582 km (0.117 R)
• M7: 2,668,676 km (0.105 R)
• M8: 2,984,328 km (0.041 R)
• M9: 3,285,618 km (0.088 R)
• M10: 3,593,490 km (0.117 R)
• M11: 4,521,296 km (0.106 R)
• M12: 6,589,487 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.2

Radius: 14.3

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 1.52 AU - 1.62 AU

Year: 1270 Days

Day: 11.8 Hours

Environment

Temp: -190 °C

Axial Tilt: 110.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 45,762,420 km

• M1: 178,171 km (0.09 R)
• M2: 749,785 km (0.099 R)
• M3: 1,364,781 km (0.115 R)
• M4: 1,969,007 km (0.1 R)
• M5: 2,606,294 km (0.096 R)
• M6: 3,139,760 km (0.077 R)
• M7: 4,192,929 km (0.074 R)
• M8: 4,930,895 km (0.057 R)
• M9: 5,888,920 km (0.091 R)
• M10: 6,376,908 km (0.083 R)
• M11: 7,730,171 km (0.12 R)
• M12: 8,489,530 km (0.113 R)
• M13: 9,673,896 km (0.088 R)
• M14: 10,190,457 km (0.108 R)
• M15: 11,209,219 km (0.085 R)
• M16: 11,852,340 km (0.103 R)
• M17: 13,173,439 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 746

Radius: 11.9

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 1.8 AU - 2.06 AU

Year: 1731 Days

Day: 5.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 45,762,420 km

• M1: 170,392 km (0.083 R)
• M2: 541,395 km (0.114 R)
• M3: 960,867 km (0.117 R)
• M4: 1,521,261 km (0.068 R)
• M5: 2,021,666 km (0.119 R)
• M6: 2,536,731 km (0.086 R)
• M7: 3,017,090 km (0.108 R)
• M8: 3,659,613 km (0.102 R)
• M9: 4,333,402 km (0.098 R)
• M10: 4,813,611 km (0.091 R)
• M11: 5,463,763 km (0.115 R)
• M12: 6,939,845 km (0.095 R)
• M13: 8,980,061 km (0.105 R)
• M14: 11,617,771 km (0.115 R)
• M15: 12,991,229 km (0.119 R)
• M16: 14,122,637 km (0.076 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231.8

Radius: 8.2

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.72 AU - 2.74 AU

Year: 2150 Days

Day: 9.2 Hours

Environment

Temp: -189 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 45,762,420 km

• M1: 102,175 km (0.088 R)
• M2: 371,452 km (0.083 R)
• M3: 679,922 km (0.077 R)
• M4: 970,142 km (0.053 R)
• M5: 1,251,386 km (0.087 R)
• M6: 1,821,952 km (0.105 R)
• M7: 2,123,093 km (0.11 R)
• M8: 2,421,092 km (0.093 R)
• M9: 2,786,709 km (0.096 R)
• M10: 3,088,298 km (0.098 R)
• M11: 3,457,506 km (0.096 R)
• M12: 4,023,734 km (0.09 R)
• M13: 5,197,180 km (0.102 R)
• M14: 5,486,352 km (0.114 R)
• M15: 6,279,520 km (0.098 R)
• M16: 7,273,598 km (0.111 R)
• M17: 7,848,503 km (0.083 R)
• M18: 8,509,725 km (0.094 R)
• M19: 9,118,289 km (0.114 R)
• M20: 10,069,433 km (0.106 R)
• M21: 10,883,245 km (0.093 R)
• M22: 11,810,901 km (0.063 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 23.3

Radius: 10.9

Gravity: 0.2 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 2.21 AU - 2.35 AU

Year: 2223 Days

Day: 8.9 Hours

Environment

Temp: -186 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 45,762,420 km

• M1: 151,543 km (0.057 R)
• M2: 656,136 km (0.086 R)
• M3: 1,182,272 km (0.066 R)
• M4: 1,786,498 km (0.09 R)
• M5: 2,558,572 km (0.036 R)
• M6: 2,994,800 km (0.103 R)
• M7: 3,504,181 km (0.112 R)
• M8: 5,699,080 km (0.12 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.6

Radius: 10.1

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 2.47 AU - 4.03 AU

Year: 3783 Days

Day: 13.4 Hours

Environment

Temp: -210 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,762,420 km

• M1: 125,812 km (0.038 R)
• M2: 461,210 km (0.103 R)
• M3: 806,931 km (0.092 R)
• M4: 1,453,942 km (0.054 R)
• M5: 2,004,761 km (0.075 R)
• M6: 3,296,838 km (0.073 R)
• M7: 5,774,777 km (0.078 R)
• M8: 7,127,740 km (0.089 R)
• M9: 8,747,436 km (0.073 R)
• M10: 10,751,898 km (0.099 R)
• M11: 11,576,930 km (0.033 R)
• M12: 13,846,929 km (0.101 R)
• M13: 16,602,970 km (0.081 R)
• M14: 17,279,452 km (0.106 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 725.3

Radius: 12.3

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 5.1 AU - 6.54 AU

Year: 9066 Days

Day: 14.1 Hours

Environment

Temp: -226 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 45,762,420 km

• M1: 153,039 km (0.112 R)
• M2: 783,444 km (0.075 R)
• M3: 1,447,060 km (0.06 R)
• M4: 1,945,670 km (0.072 R)
• M5: 2,352,576 km (0.105 R)
• M6: 2,963,833 km (0.074 R)
• M7: 3,412,776 km (0.089 R)
• M8: 3,959,257 km (0.037 R)
• M9: 5,134,199 km (0.107 R)
• M10: 6,132,166 km (0.034 R)
• M11: 7,455,210 km (0.06 R)
• M12: 8,960,164 km (0.055 R)
• M13: 9,808,833 km (0.073 R)
• M14: 11,611,936 km (0.076 R)
• M15: 12,278,096 km (0.099 R)
• M16: 13,748,194 km (0.108 R)
• M17: 15,596,775 km (0.031 R)
• M18: 21,713,832 km (0.08 R)
• M19: 24,391,634 km (0.108 R)
• M20: 25,577,646 km (0.102 R)
• M21: 26,706,062 km (0.102 R)
• M22: 27,965,676 km (0.102 R)
• M23: 35,552,832 km (0.114 R)
• M24: 36,133,720 km (0.073 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 402 - 11,597 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit