🌌 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: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.59 AU - 0.67 AU

Year: 323 Days

Day: 13.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 37.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 785.7

Radius: 9.4

Gravity: 8.89 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.68 AU - 0.78 AU

Year: 403 Days

Day: 14.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 25.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 37,076,417 km

• M1: 116,986 km (0.077 R)
• M2: 569,968 km (0.116 R)
• M3: 915,389 km (0.085 R)
• M4: 1,285,644 km (0.102 R)
• M5: 1,589,477 km (0.103 R)
• M6: 2,031,689 km (0.072 R)
• M7: 2,458,342 km (0.075 R)
• M8: 2,754,845 km (0.07 R)
• M9: 3,075,283 km (0.087 R)
• M10: 3,553,847 km (0.088 R)
• M11: 4,273,263 km (0.104 R)
• M12: 5,689,506 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 946.9

Radius: 8.4

Gravity: 13.42 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.8 AU - 0.9 AU

Year: 506 Days

Day: 8.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 37,076,417 km

• M1: 114,592 km (0.086 R)
• M2: 586,274 km (0.079 R)
• M3: 1,026,241 km (0.088 R)
• M4: 1,382,584 km (0.077 R)
• M5: 1,763,011 km (0.079 R)
• M6: 2,289,446 km (0.041 R)
• M7: 3,290,256 km (0.109 R)
• M8: 3,560,878 km (0.084 R)
• M9: 3,930,983 km (0.106 R)
• M10: 4,636,487 km (0.031 R)
• M11: 5,283,797 km (0.066 R)
• M12: 6,103,892 km (0.075 R)
• M13: 6,534,585 km (0.046 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 377.9

Radius: 13

Gravity: 2.24 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 1.6 AU - 2.58 AU

Year: 1951 Days

Day: 12.1 Hours

Environment

Temp: -187 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 37,076,417 km

• M1: 161,715 km (0.118 R)
• M2: 991,385 km (0.098 R)
• M3: 1,466,508 km (0.106 R)
• M4: 2,073,426 km (0.053 R)
• M5: 2,580,713 km (0.112 R)
• M6: 4,856,545 km (0.109 R)
• M7: 5,895,502 km (0.094 R)
• M8: 6,924,885 km (0.078 R)
• M9: 7,337,327 km (0.086 R)
• M10: 8,098,780 km (0.075 R)
• M11: 9,369,913 km (0.04 R)
• M12: 12,455,519 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.1

Radius: 11.4

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 1.89 AU - 2.77 AU

Year: 2296 Days

Day: 8.9 Hours

Environment

Temp: -194 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 37,076,417 km

• M1: 157,078 km (0.106 R)
• M2: 543,190 km (0.112 R)
• M3: 906,413 km (0.051 R)
• M4: 1,274,723 km (0.115 R)
• M5: 1,798,914 km (0.065 R)
• M6: 3,320,026 km (0.097 R)
• M7: 4,050,811 km (0.041 R)
• M8: 4,778,306 km (0.114 R)
• M9: 5,333,314 km (0.075 R)
• M10: 5,734,834 km (0.099 R)
• M11: 6,131,269 km (0.069 R)
• M12: 6,814,632 km (0.103 R)
• M13: 7,489,917 km (0.053 R)
• M14: 8,147,549 km (0.102 R)
• M15: 8,649,749 km (0.091 R)
• M16: 9,475,679 km (0.092 R)
• M17: 10,682,485 km (0.109 R)
• M18: 11,400,106 km (0.096 R)
• M19: 11,949,130 km (0.104 R)
• M20: 12,847,615 km (0.099 R)
• M21: 13,228,042 km (0.094 R)
• M22: 13,922,625 km (0.11 R)
• M23: 15,432,217 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309

Radius: 14.2

Gravity: 1.53 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 2.39 AU - 3.69 AU

Year: 3422 Days

Day: 6.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 37,076,417 km

• M1: 179,368 km (0.104 R)
• M2: 1,767,200 km (0.114 R)
• M3: 2,651,921 km (0.063 R)
• M4: 3,544,722 km (0.117 R)
• M5: 4,159,718 km (0.108 R)
• M6: 4,758,259 km (0.087 R)
• M7: 5,461,369 km (0.084 R)
• M8: 6,443,779 km (0.114 R)
• M9: 7,364,254 km (0.102 R)
• M10: 10,507,904 km (0.08 R)
• M11: 11,623,455 km (0.098 R)
• M12: 12,859,283 km (0.114 R)
• M13: 13,377,341 km (0.078 R)
• M14: 14,044,697 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.6

Radius: 12.2

Gravity: 6.71 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 3.42 AU - 3.8 AU

Year: 4429 Days

Day: 12.9 Hours

Environment

Temp: -212 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 37,076,417 km

• M1: 151,692 km (0.087 R)
• M2: 1,052,122 km (0.104 R)
• M3: 1,476,082 km (0.094 R)
• M4: 2,349,435 km (0.029 R)
• M5: 2,902,348 km (0.103 R)
• M6: 3,519,739 km (0.112 R)
• M7: 4,056,496 km (0.093 R)
• M8: 5,045,487 km (0.119 R)
• M9: 5,670,657 km (0.084 R)
• M10: 6,379,003 km (0.111 R)
• M11: 7,145,542 km (0.105 R)
• M12: 7,972,370 km (0.108 R)
• M13: 8,623,868 km (0.05 R)
• M14: 9,023,444 km (0.08 R)
• M15: 9,603,585 km (0.091 R)
• M16: 10,930,967 km (0.09 R)
• M17: 14,056,366 km (0.098 R)
• M18: 17,542,594 km (0.084 R)
• M19: 18,056,014 km (0.064 R)
• M20: 19,180,242 km (0.097 R)
• M21: 25,185,849 km (0.039 R)
• M22: 27,095,765 km (0.106 R)
• M23: 28,480,293 km (0.064 R)
• M24: 30,093,556 km (0.042 R)
• M25: 31,202,376 km (0.104 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 756.3

Radius: 13.9

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 3.59 AU - 5.71 AU

Year: 6474 Days

Day: 14.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 37,076,417 km

• M1: 176,226 km (0.107 R)
• M2: 633,697 km (0.047 R)
• M3: 1,101,190 km (0.089 R)
• M4: 1,714,691 km (0.107 R)
• M5: 2,887,538 km (0.075 R)
• M6: 3,535,746 km (0.062 R)
• M7: 4,305,277 km (0.119 R)
• M8: 4,841,436 km (0.029 R)
• M9: 5,951,602 km (0.068 R)
• M10: 6,413,710 km (0.116 R)
• M11: 7,151,975 km (0.054 R)
• M12: 9,621,985 km (0.092 R)
• M13: 10,734,395 km (0.102 R)
• M14: 12,243,389 km (0.102 R)
• M15: 13,492,980 km (0.119 R)
• M16: 16,565,271 km (0.072 R)
• M17: 18,645,579 km (0.033 R)
• M18: 19,209,563 km (0.079 R)
• M19: 20,744,438 km (0.063 R)
• M20: 22,438,633 km (0.095 R)
• M21: 28,628,993 km (0.078 R)
• M22: 29,856,444 km (0.057 R)
• M23: 31,514,287 km (0.085 R)
• M24: 32,517,640 km (0.085 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 186 - 17,036 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit