🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.95

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.55 AU - 0.65 AU

Year: 296 Days

Day: 13.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 7.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672.8

Radius: 14.4

Gravity: 3.24 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.85 AU - 0.89 AU

Year: 516 Days

Day: 8.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 59,419,700 km

• M1: 179,368 km (0.088 R)
• M2: 693,386 km (0.095 R)
• M3: 1,242,111 km (0.119 R)
• M4: 1,831,826 km (0.038 R)
• M5: 2,678,251 km (0.085 R)
• M6: 3,358,622 km (0.049 R)
• M7: 4,800,296 km (0.072 R)
• M8: 5,566,387 km (0.037 R)

Asteroid Belt

Center: 1.2 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678.1

Radius: 11.5

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 1.15 AU - 1.91 AU

Year: 1203 Days

Day: 12.5 Hours

Environment

Temp: -173 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 59,419,700 km

• M1: 143,315 km (0.057 R)
• M2: 527,033 km (0.099 R)
• M3: 912,697 km (0.087 R)
• M4: 1,284,447 km (0.104 R)
• M5: 1,760,019 km (0.112 R)
• M6: 2,141,045 km (0.08 R)
• M7: 2,677,054 km (0.079 R)
• M8: 3,243,431 km (0.115 R)
• M9: 3,648,542 km (0.075 R)
• M10: 4,070,708 km (0.035 R)
• M11: 4,709,491 km (0.047 R)
• M12: 5,475,581 km (0.097 R)
• M13: 6,254,837 km (0.115 R)
• M14: 7,900,413 km (0.108 R)
• M15: 8,837,943 km (0.081 R)
• M16: 9,363,630 km (0.113 R)
• M17: 10,317,915 km (0.092 R)
• M18: 11,437,655 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 846.5

Radius: 11.7

Gravity: 6.18 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.53 AU - 2.49 AU

Year: 1812 Days

Day: 6.6 Hours

Environment

Temp: -192 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 59,419,700 km

• M1: 146,157 km (0.099 R)
• M2: 670,498 km (0.027 R)
• M3: 1,198,129 km (0.031 R)
• M4: 1,653,056 km (0.111 R)
• M5: 2,125,487 km (0.081 R)
• M6: 3,200,646 km (0.083 R)
• M7: 3,924,251 km (0.106 R)
• M8: 4,404,909 km (0.083 R)
• M9: 6,137,701 km (0.058 R)
• M10: 7,059,972 km (0.084 R)
• M11: 7,425,440 km (0.089 R)
• M12: 9,113,502 km (0.066 R)
• M13: 10,601,552 km (0.067 R)
• M14: 11,156,860 km (0.064 R)
• M15: 12,447,291 km (0.069 R)
• M16: 13,234,026 km (0.059 R)
• M17: 13,704,511 km (0.106 R)
• M18: 14,815,276 km (0.093 R)
• M19: 15,229,662 km (0.089 R)
• M20: 16,226,432 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 88.8

Radius: 9.2

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.93 AU - 2.41 AU

Year: 2032 Days

Day: 7.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 59,419,700 km

• M1: 115,639 km (0.077 R)
• M2: 422,614 km (0.094 R)
• M3: 749,336 km (0.066 R)
• M4: 1,224,608 km (0.049 R)
• M5: 3,137,965 km (0.109 R)
• M6: 3,466,332 km (0.098 R)
• M7: 3,920,212 km (0.107 R)
• M8: 4,641,872 km (0.082 R)
• M9: 7,432,621 km (0.115 R)
• M10: 8,067,664 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 178.4

Radius: 8.7

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2.06 AU - 2.96 AU

Year: 2528 Days

Day: 8.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 59,419,700 km

• M1: 108,159 km (0.099 R)
• M2: 404,064 km (0.106 R)
• M3: 827,875 km (0.028 R)
• M4: 1,441,525 km (0.058 R)
• M5: 1,934,749 km (0.097 R)
• M6: 2,319,515 km (0.115 R)
• M7: 2,888,884 km (0.084 R)
• M8: 3,303,271 km (0.058 R)
• M9: 3,675,769 km (0.113 R)
• M10: 4,251,422 km (0.06 R)
• M11: 4,523,989 km (0.091 R)
• M12: 5,226,052 km (0.081 R)
• M13: 5,496,824 km (0.064 R)
• M14: 6,389,624 km (0.113 R)
• M15: 6,675,356 km (0.048 R)
• M16: 7,044,713 km (0.088 R)
• M17: 8,375,386 km (0.076 R)
• M18: 9,040,648 km (0.087 R)
• M19: 9,401,478 km (0.075 R)
• M20: 10,281,114 km (0.119 R)
• M21: 11,701,695 km (0.113 R)
• M22: 12,058,486 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417.4

Radius: 12.3

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 2.62 AU - 2.62 AU

Year: 2696 Days

Day: 14.6 Hours

Environment

Temp: -203 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 59,419,700 km

• M1: 153,039 km (0.062 R)
• M2: 584,479 km (0.066 R)
• M3: 1,011,282 km (0.053 R)
• M4: 1,470,697 km (0.055 R)
• M5: 1,942,977 km (0.087 R)
• M6: 2,475,546 km (0.109 R)
• M7: 3,587,357 km (0.118 R)
• M8: 4,705,152 km (0.085 R)
• M9: 5,484,557 km (0.09 R)
• M10: 6,505,114 km (0.095 R)
• M11: 7,415,267 km (0.029 R)
• M12: 8,098,481 km (0.078 R)
• M13: 9,420,178 km (0.086 R)
• M14: 10,732,151 km (0.116 R)
• M15: 11,297,482 km (0.069 R)
• M16: 12,569,961 km (0.115 R)
• M17: 14,930,615 km (0.037 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536.9

Radius: 12.4

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 2.75 AU - 3.73 AU

Year: 3708 Days

Day: 14.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 59,419,700 km

• M1: 155,881 km (0.044 R)
• M2: 718,219 km (0.102 R)
• M3: 1,397,394 km (0.071 R)
• M4: 2,191,310 km (0.087 R)
• M5: 4,240,501 km (0.117 R)
• M6: 5,221,265 km (0.12 R)
• M7: 7,468,374 km (0.115 R)
• M8: 8,505,387 km (0.097 R)
• M9: 11,929,084 km (0.077 R)
• M10: 12,737,810 km (0.097 R)
• M11: 14,068,034 km (0.049 R)
• M12: 19,579,220 km (0.074 R)
• M13: 22,004,650 km (0.095 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 454.8

Radius: 6.2

Gravity: 11.83 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 7.51 AU - 10.33 AU

Year: 16939 Days

Day: 20.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 59,419,700 km

• M1: 77,043 km (0.047 R)
• M2: 477,816 km (0.089 R)
• M3: 907,760 km (0.101 R)
• M4: 1,144,424 km (0.114 R)
• M5: 2,962,786 km (0.081 R)
• M6: 5,448,654 km (0.111 R)
• M7: 6,082,201 km (0.114 R)
• M8: 9,421,375 km (0.114 R)
• M9: 10,167,270 km (0.078 R)
• M10: 15,128,533 km (0.109 R)
• M11: 16,298,987 km (0.091 R)
• M12: 16,676,722 km (0.113 R)
• M13: 20,171,029 km (0.06 R)
• M14: 20,870,848 km (0.116 R)
• M15: 26,436,786 km (0.118 R)
• M16: 29,003,287 km (0.101 R)
• M17: 39,424,574 km (0.084 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 249 - 16,569 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit