🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.41

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.55 AU - 0.79 AU

Year: 360 Days

Day: 40.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 12.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 989.9

Radius: 15

Gravity: 4.4 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.57 AU - 0.83 AU

Year: 384 Days

Day: 11 Hours

Environment

Temp: -141 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,234,637 km

• M1: 186,549 km (0.045 R)
• M2: 655,687 km (0.074 R)
• M3: 1,123,480 km (0.113 R)
• M4: 1,986,211 km (0.089 R)
• M5: 2,485,718 km (0.059 R)
• M6: 3,425,791 km (0.113 R)
• M7: 4,086,266 km (0.107 R)
• M8: 5,513,729 km (0.109 R)
• M9: 6,098,806 km (0.048 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.9

Radius: 12.2

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.32 AU - 2.38 AU

Year: 2363 Days

Day: 12.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 52,234,637 km

• M1: 152,291 km (0.067 R)
• M2: 541,843 km (0.108 R)
• M3: 1,021,305 km (0.106 R)
• M4: 1,496,278 km (0.065 R)
• M5: 2,011,643 km (0.056 R)
• M6: 2,450,862 km (0.105 R)
• M7: 4,553,610 km (0.064 R)
• M8: 5,182,519 km (0.115 R)
• M9: 6,831,237 km (0.093 R)
• M10: 7,221,987 km (0.095 R)
• M11: 8,295,651 km (0.085 R)
• M12: 8,936,678 km (0.033 R)
• M13: 9,749,144 km (0.097 R)
• M14: 11,021,623 km (0.057 R)
• M15: 11,796,839 km (0.111 R)
• M16: 13,027,431 km (0.084 R)
• M17: 13,805,789 km (0.109 R)
• M18: 14,341,798 km (0.114 R)
• M19: 14,891,570 km (0.12 R)
• M20: 15,407,982 km (0.109 R)
• M21: 16,476,410 km (0.033 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.3

Radius: 13.9

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 2.26 AU - 3.38 AU

Year: 3107 Days

Day: 10.5 Hours

Environment

Temp: -196 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 52,234,637 km

• M1: 173,384 km (0.097 R)
• M2: 609,911 km (0.049 R)
• M3: 1,168,509 km (0.052 R)
• M4: 1,603,988 km (0.087 R)
• M5: 2,492,749 km (0.115 R)
• M6: 3,571,799 km (0.076 R)
• M7: 4,541,791 km (0.097 R)
• M8: 5,114,003 km (0.1 R)
• M9: 6,035,077 km (0.117 R)
• M10: 6,879,557 km (0.107 R)
• M11: 8,002,439 km (0.086 R)
• M12: 8,449,437 km (0.069 R)
• M13: 9,431,398 km (0.107 R)
• M14: 12,514,311 km (0.037 R)
• M15: 14,283,904 km (0.106 R)
• M16: 15,412,321 km (0.025 R)
• M17: 16,052,300 km (0.091 R)
• M18: 18,255,877 km (0.027 R)
• M19: 20,399,315 km (0.081 R)
• M20: 22,637,449 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.3

Radius: 11.8

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 2.78 AU - 3.23 AU

Year: 3409 Days

Day: 14.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 52,234,637 km

• M1: 147,952 km (0.075 R)
• M2: 687,552 km (0.07 R)
• M3: 1,117,197 km (0.054 R)
• M4: 1,499,868 km (0.075 R)
• M5: 2,008,351 km (0.104 R)
• M6: 2,470,758 km (0.083 R)
• M7: 2,844,155 km (0.073 R)
• M8: 3,594,687 km (0.105 R)
• M9: 4,037,198 km (0.102 R)
• M10: 4,430,191 km (0.111 R)
• M11: 4,940,170 km (0.058 R)
• M12: 5,999,174 km (0.114 R)
• M13: 7,505,624 km (0.102 R)
• M14: 8,630,152 km (0.091 R)
• M15: 9,608,073 km (0.051 R)
• M16: 10,086,487 km (0.113 R)
• M17: 10,542,312 km (0.119 R)
• M18: 11,091,336 km (0.066 R)
• M19: 14,364,537 km (0.093 R)
• M20: 15,088,890 km (0.058 R)
• M21: 15,990,217 km (0.118 R)
• M22: 17,193,732 km (0.075 R)
• M23: 19,197,296 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 870.8

Radius: 9.4

Gravity: 9.86 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.42 AU - 3.9 AU

Year: 3685 Days

Day: 11 Hours

Environment

Temp: -206 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 52,234,637 km

• M1: 117,584 km (0.118 R)
• M2: 479,611 km (0.104 R)
• M3: 778,507 km (0.065 R)
• M4: 1,098,048 km (0.062 R)
• M5: 1,563,447 km (0.116 R)
• M6: 2,113,818 km (0.117 R)
• M7: 2,411,518 km (0.117 R)
• M8: 3,000,784 km (0.118 R)
• M9: 3,438,507 km (0.071 R)
• M10: 5,274,671 km (0.103 R)
• M11: 6,237,782 km (0.103 R)
• M12: 6,604,297 km (0.084 R)
• M13: 7,214,058 km (0.106 R)
• M14: 7,791,057 km (0.036 R)
• M15: 8,884,169 km (0.111 R)
• M16: 9,587,279 km (0.097 R)
• M17: 13,218,169 km (0.109 R)
• M18: 15,201,088 km (0.112 R)
• M19: 17,614,850 km (0.052 R)
• M20: 18,535,625 km (0.091 R)
• M21: 21,906,963 km (0.071 R)
• M22: 22,257,919 km (0.025 R)
• M23: 23,188,418 km (0.106 R)
• M24: 24,897,574 km (0.082 R)
• M25: 25,588,716 km (0.104 R)
• M26: 26,530,135 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 980.6

Radius: 12.6

Gravity: 6.18 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 4.84 AU - 6.8 AU

Year: 9211 Days

Day: 8 Hours

Environment

Temp: -219 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 52,234,637 km

• M1: 156,928 km (0.064 R)
• M2: 835,355 km (0.089 R)
• M3: 1,492,388 km (0.109 R)
• M4: 2,056,372 km (0.063 R)
• M5: 2,676,904 km (0.078 R)
• M6: 3,088,897 km (0.118 R)
• M7: 4,740,906 km (0.045 R)
• M8: 5,901,486 km (0.109 R)
• M9: 6,491,500 km (0.116 R)
• M10: 6,999,535 km (0.111 R)
• M11: 9,352,260 km (0.115 R)
• M12: 9,748,396 km (0.117 R)
• M13: 11,169,127 km (0.089 R)
• M14: 13,334,705 km (0.026 R)
• M15: 14,747,807 km (0.082 R)
• M16: 16,400,714 km (0.115 R)
• M17: 18,481,471 km (0.101 R)
• M18: 20,317,934 km (0.084 R)
• M19: 30,267,090 km (0.088 R)
• M20: 31,577,567 km (0.04 R)
• M21: 32,022,771 km (0.113 R)
• M22: 36,463,284 km (0.114 R)
• M23: 37,821,483 km (0.109 R)
• M24: 42,367,912 km (0.105 R)
• M25: 44,145,434 km (0.094 R)
• M26: 48,880,207 km (0.085 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 248.8

Radius: 5.6

Gravity: 7.93 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 8.45 AU - 10.33 AU

Year: 18876 Days

Day: 16 Hours

Environment

Temp: -235 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,234,637 km

• M1: 70,461 km (0.078 R)
• M2: 252,820 km (0.107 R)
• M3: 450,589 km (0.099 R)
• M4: 729,439 km (0.117 R)
• M5: 1,130,960 km (0.118 R)
• M6: 2,119,951 km (0.112 R)
• M7: 6,629,430 km (0.114 R)
• M8: 7,879,918 km (0.09 R)
• M9: 10,566,846 km (0.117 R)
• M10: 11,793,997 km (0.111 R)
• M11: 16,690,036 km (0.074 R)
• M12: 21,726,548 km (0.037 R)
• M13: 25,691,490 km (0.086 R)
• M14: 28,517,244 km (0.112 R)
• M15: 28,726,681 km (0.114 R)
• M16: 29,896,835 km (0.098 R)
• M17: 34,066,278 km (0.102 R)
• M18: 34,539,007 km (0.112 R)
• M19: 46,366,214 km (0.113 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 167 - 12,093 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit