🌌 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: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.53 AU - 0.67 AU

Year: 300 Days

Day: 25.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 4.2 °

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: 266.1

Radius: 14.3

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.65 AU - 0.75 AU

Year: 378 Days

Day: 13.9 Hours

Environment

Temp: -134 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 60,320,692 km

• M1: 177,872 km (0.097 R)
• M2: 734,825 km (0.069 R)
• M3: 1,192,145 km (0.076 R)
• M4: 1,752,389 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 523.7

Radius: 14.1

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.82 AU - 1.24 AU

Year: 675 Days

Day: 11.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,320,692 km

• M1: 175,927 km (0.069 R)
• M2: 629,059 km (0.063 R)
• M3: 1,273,377 km (0.115 R)
• M4: 2,034,082 km (0.098 R)
• M5: 3,251,211 km (0.075 R)
• M6: 3,985,437 km (0.09 R)
• M7: 4,591,458 km (0.034 R)
• M8: 5,258,515 km (0.111 R)
• M9: 6,686,576 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 745.6

Radius: 8.1

Gravity: 11.36 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 2.02 AU - 2.88 AU

Year: 2476 Days

Day: 14.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 60,320,692 km

• M1: 100,679 km (0.071 R)
• M2: 378,333 km (0.093 R)
• M3: 699,520 km (0.119 R)
• M4: 1,018,313 km (0.06 R)
• M5: 1,283,699 km (0.087 R)
• M6: 2,226,465 km (0.067 R)
• M7: 2,867,642 km (0.083 R)
• M8: 3,353,984 km (0.063 R)
• M9: 4,447,844 km (0.06 R)
• M10: 9,279,257 km (0.116 R)
• M11: 10,609,780 km (0.063 R)
• M12: 11,200,093 km (0.07 R)
• M13: 12,489,029 km (0.07 R)
• M14: 13,416,685 km (0.048 R)
• M15: 14,437,092 km (0.095 R)
• M16: 14,820,661 km (0.064 R)
• M17: 15,910,482 km (0.116 R)
• M18: 16,527,124 km (0.12 R)
• M19: 17,917,636 km (0.074 R)
• M20: 18,193,644 km (0.104 R)
• M21: 18,584,992 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 319.7

Radius: 14.9

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 4.11 AU - 6.79 AU

Year: 8215 Days

Day: 14.4 Hours

Environment

Temp: -227 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 60,320,692 km

• M1: 185,352 km (0.09 R)
• M2: 1,017,864 km (0.1 R)
• M3: 1,482,515 km (0.065 R)
• M4: 2,079,410 km (0.109 R)
• M5: 2,674,660 km (0.087 R)
• M6: 3,300,727 km (0.108 R)
• M7: 3,907,646 km (0.101 R)
• M8: 5,123,129 km (0.111 R)
• M9: 5,941,429 km (0.105 R)
• M10: 6,710,661 km (0.096 R)
• M11: 7,654,923 km (0.115 R)
• M12: 8,178,516 km (0.067 R)
• M13: 9,008,784 km (0.08 R)
• M14: 11,403,546 km (0.078 R)
• M15: 11,939,256 km (0.044 R)
• M16: 13,113,899 km (0.048 R)
• M17: 15,397,062 km (0.052 R)
• M18: 15,992,012 km (0.055 R)
• M19: 16,726,089 km (0.098 R)
• M20: 18,261,861 km (0.073 R)
• M21: 19,336,722 km (0.073 R)
• M22: 19,959,647 km (0.102 R)
• M23: 20,955,371 km (0.116 R)
• M24: 23,746,418 km (0.09 R)
• M25: 24,221,242 km (0.065 R)
• M26: 25,684,159 km (0.103 R)
• M27: 29,054,898 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 958.2

Radius: 9.9

Gravity: 9.78 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 5.4 AU - 6.08 AU

Year: 8879 Days

Day: 11.6 Hours

Environment

Temp: -221 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 60,320,692 km

• M1: 127,308 km (0.044 R)
• M2: 478,264 km (0.116 R)
• M3: 806,033 km (0.113 R)
• M4: 1,139,337 km (0.103 R)
• M5: 1,580,651 km (0.095 R)
• M6: 2,964,282 km (0.091 R)
• M7: 3,577,932 km (0.103 R)
• M8: 4,050,811 km (0.105 R)
• M9: 4,505,738 km (0.065 R)
• M10: 6,224,319 km (0.111 R)
• M11: 7,230,663 km (0.113 R)
• M12: 7,645,498 km (0.059 R)
• M13: 8,845,124 km (0.095 R)
• M14: 10,372,368 km (0.079 R)
• M15: 11,670,130 km (0.078 R)
• M16: 12,125,955 km (0.073 R)
• M17: 14,716,391 km (0.076 R)
• M18: 15,862,610 km (0.09 R)
• M19: 16,351,496 km (0.101 R)
• M20: 17,580,891 km (0.101 R)
• M21: 20,549,811 km (0.093 R)
• M22: 22,413,351 km (0.115 R)
• M23: 34,831,620 km (0.045 R)
• M24: 36,135,964 km (0.109 R)
• M25: 37,227,131 km (0.077 R)
• M26: 39,986,912 km (0.118 R)
• M27: 40,373,473 km (0.118 R)
• M28: 42,477,717 km (0.099 R)
• M29: 44,240,429 km (0.045 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 401.9

Radius: 6.4

Gravity: 9.81 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 9.29 AU - 9.39 AU

Year: 18430 Days

Day: 16.1 Hours

Environment

Temp: -228 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 60,320,692 km

• M1: 79,586 km (0.074 R)
• M2: 407,953 km (0.039 R)
• M3: 1,066,782 km (0.115 R)
• M4: 1,318,855 km (0.077 R)
• M5: 1,518,568 km (0.116 R)
• M6: 2,729,413 km (0.031 R)
• M7: 4,170,938 km (0.048 R)
• M8: 4,769,629 km (0.083 R)
• M9: 5,423,970 km (0.104 R)
• M10: 6,254,537 km (0.068 R)
• M11: 8,501,198 km (0.115 R)
• M12: 10,211,999 km (0.076 R)
• M13: 11,235,847 km (0.034 R)
• M14: 12,451,779 km (0.05 R)
• M15: 15,142,745 km (0.112 R)
• M16: 16,019,987 km (0.091 R)
• M17: 16,471,025 km (0.032 R)
• M18: 19,273,142 km (0.034 R)
• M19: 23,226,715 km (0.057 R)
• M20: 26,628,571 km (0.075 R)
• M21: 28,998,201 km (0.112 R)
• M22: 30,462,764 km (0.093 R)
• M23: 49,637,321 km (0.055 R)
• M24: 54,720,657 km (0.047 R)
• M25: 55,230,187 km (0.066 R)
• M26: 55,571,719 km (0.077 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 422 - 19,530 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit