🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.66

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 0.57 AU - 0.59 AU

Year: 285 Days

Day: 46.1 Hours

Environment

Temp: -119 °C

Axial Tilt: 4.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.77

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.47 AU - 0.75 AU

Year: 308 Days

Day: 14.5 Hours

Environment

Temp: -131 °C

Axial Tilt: 29.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,111,976 km

• M1: 143,315 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.8

Radius: 10.2

Gravity: 5.81 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.72 AU - 1.04 AU

Year: 533 Days

Day: 14.9 Hours

Environment

Temp: -159 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 66,111,976 km

• M1: 127,009 km (0.077 R)
• M2: 450,290 km (0.111 R)
• M3: 846,425 km (0.108 R)
• M4: 1,278,613 km (0.064 R)
• M5: 1,597,855 km (0.113 R)
• M6: 1,921,435 km (0.111 R)
• M7: 2,490,505 km (0.039 R)
• M8: 3,323,466 km (0.095 R)
• M9: 3,751,915 km (0.066 R)
• M10: 5,246,846 km (0.116 R)
• M11: 5,991,245 km (0.053 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 280.5

Radius: 10.1

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.14 AU - 1.86 AU

Year: 1186 Days

Day: 11.3 Hours

Environment

Temp: -178 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 66,111,976 km

• M1: 125,662 km (0.05 R)
• M2: 467,344 km (0.067 R)
• M3: 949,797 km (0.115 R)
• M4: 1,444,218 km (0.105 R)
• M5: 1,891,366 km (0.093 R)
• M6: 2,314,279 km (0.057 R)
• M7: 2,706,674 km (0.082 R)
• M8: 3,156,216 km (0.096 R)
• M9: 3,584,664 km (0.1 R)
• M10: 4,237,360 km (0.086 R)
• M11: 4,592,355 km (0.084 R)
• M12: 5,234,429 km (0.111 R)
• M13: 5,876,354 km (0.107 R)
• M14: 6,319,014 km (0.093 R)
• M15: 6,849,039 km (0.096 R)
• M16: 8,242,394 km (0.094 R)
• M17: 8,567,769 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.6

Radius: 10.8

Gravity: 2.83 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 2.26 AU - 3.36 AU

Year: 3041 Days

Day: 8.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 11.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 66,111,976 km

• M1: 151,243 km (0.096 R)
• M2: 676,781 km (0.113 R)
• M3: 1,384,229 km (0.065 R)
• M4: 2,131,171 km (0.085 R)
• M5: 2,674,361 km (0.084 R)
• M6: 3,759,993 km (0.069 R)
• M7: 4,174,379 km (0.068 R)
• M8: 4,556,602 km (0.074 R)
• M9: 4,940,320 km (0.054 R)
• M10: 5,368,768 km (0.111 R)
• M11: 6,070,682 km (0.091 R)
• M12: 9,066,379 km (0.056 R)
• M13: 10,457,938 km (0.111 R)
• M14: 12,721,653 km (0.081 R)
• M15: 15,200,041 km (0.108 R)
• M16: 15,722,138 km (0.062 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.3

Radius: 14.9

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 4.89 AU - 5.67 AU

Year: 7834 Days

Day: 8.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 66,111,976 km

• M1: 203,154 km (0.082 R)
• M2: 945,907 km (0.085 R)
• M3: 1,753,287 km (0.096 R)
• M4: 4,447,395 km (0.033 R)
• M5: 5,163,819 km (0.066 R)
• M6: 8,008,872 km (0.069 R)
• M7: 9,963,517 km (0.042 R)
• M8: 12,677,522 km (0.097 R)
• M9: 14,121,740 km (0.08 R)
• M10: 16,582,774 km (0.113 R)
• M11: 21,890,806 km (0.102 R)
• M12: 24,283,325 km (0.084 R)
• M13: 24,846,860 km (0.106 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 239.8

Radius: 4.8

Gravity: 10.41 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 6.36 AU - 6.9 AU

Year: 11023 Days

Day: 21.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 66,111,976 km

• M1: 74,350 km (0.115 R)
• M2: 227,239 km (0.106 R)
• M3: 509,082 km (0.069 R)
• M4: 800,049 km (0.065 R)
• M5: 1,163,273 km (0.061 R)
• M6: 1,437,037 km (0.084 R)
• M7: 2,415,108 km (0.082 R)
• M8: 2,650,575 km (0.112 R)
• M9: 3,772,260 km (0.044 R)
• M10: 3,941,006 km (0.048 R)
• M11: 5,297,111 km (0.076 R)
• M12: 7,526,269 km (0.097 R)
• M13: 8,719,910 km (0.109 R)
• M14: 11,325,606 km (0.11 R)
• M15: 11,576,332 km (0.092 R)
• M16: 11,985,183 km (0.115 R)
• M17: 12,669,892 km (0.095 R)
• M18: 16,553,453 km (0.11 R)
• M19: 18,416,545 km (0.036 R)
• M20: 19,541,521 km (0.091 R)
• M21: 24,003,876 km (0.094 R)
• M22: 26,382,482 km (0.079 R)
• M23: 29,476,316 km (0.099 R)
• M24: 31,601,952 km (0.106 R)
• M25: 32,098,916 km (0.118 R)
• M26: 32,803,372 km (0.04 R)
• M27: 34,873,059 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 654.7

Radius: 7.2

Gravity: 12.63 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 7.95 AU - 9.45 AU

Year: 16569 Days

Day: 24.3 Hours

Environment

Temp: -223 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 66,111,976 km

• M1: 89,609 km (0.079 R)
• M2: 431,440 km (0.104 R)
• M3: 658,380 km (0.116 R)
• M4: 1,084,435 km (0.094 R)
• M5: 1,432,848 km (0.12 R)
• M6: 2,462,231 km (0.108 R)
• M7: 2,871,980 km (0.107 R)
• M8: 3,488,323 km (0.105 R)
• M9: 3,798,739 km (0.056 R)
• M10: 4,158,522 km (0.071 R)
• M11: 9,752,734 km (0.088 R)
• M12: 10,199,583 km (0.045 R)
• M13: 10,895,213 km (0.053 R)
• M14: 13,996,826 km (0.114 R)
• M15: 19,593,132 km (0.067 R)
• M16: 25,041,636 km (0.072 R)
• M17: 29,071,803 km (0.08 R)
• M18: 29,996,767 km (0.1 R)
• M19: 30,584,686 km (0.053 R)
• M20: 35,176,593 km (0.06 R)
• M21: 42,524,541 km (0.099 R)
• M22: 61,283,067 km (0.067 R)
• M23: 65,716,699 km (0.093 R)
• M24: 66,111,937 km (0.096 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 336 - 13,334 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit