🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.51

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.43 AU - 0.59 AU

Year: 232 Days

Day: 19.4 Hours

Environment

Temp: -112 °C

Axial Tilt: 25.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 64,276,511 km

• M1: 44,879 km (0.112 R)
• M2: 438,471 km (0.117 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.07

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.53 AU - 0.63 AU

Year: 281 Days

Day: 15.8 Hours

Environment

Temp: -122 °C

Axial Tilt: 31.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 500.3

Radius: 14.9

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.78 AU - 1.06 AU

Year: 561 Days

Day: 7.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 64,276,511 km

• M1: 185,352 km (0.096 R)
• M2: 666,758 km (0.077 R)
• M3: 1,316,611 km (0.064 R)
• M4: 1,856,210 km (0.055 R)
• M5: 2,496,639 km (0.099 R)
• M6: 3,270,957 km (0.119 R)
• M7: 3,799,188 km (0.12 R)
• M8: 5,433,843 km (0.118 R)
• M9: 6,271,292 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 758.6

Radius: 12

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 1.24 AU - 1.58 AU

Year: 1065 Days

Day: 11.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 64,276,511 km

• M1: 149,299 km (0.045 R)
• M2: 551,418 km (0.054 R)
• M3: 929,003 km (0.07 R)
• M4: 1,357,002 km (0.1 R)
• M5: 1,898,995 km (0.115 R)
• M6: 2,464,176 km (0.025 R)
• M7: 2,845,202 km (0.079 R)
• M8: 3,589,601 km (0.113 R)
• M9: 3,983,791 km (0.088 R)
• M10: 4,602,528 km (0.093 R)
• M11: 5,404,672 km (0.041 R)
• M12: 5,839,553 km (0.106 R)
• M13: 6,898,407 km (0.102 R)
• M14: 7,461,194 km (0.104 R)
• M15: 7,844,613 km (0.101 R)
• M16: 8,376,434 km (0.057 R)
• M17: 9,512,330 km (0.118 R)
• M18: 10,975,098 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 475.1

Radius: 8.6

Gravity: 6.42 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 4.31 AU - 6.95 AU

Year: 8494 Days

Day: 10.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,276,511 km

• M1: 106,962 km (0.088 R)
• M2: 511,026 km (0.089 R)
• M3: 1,022,950 km (0.083 R)
• M4: 2,999,437 km (0.076 R)
• M5: 3,450,924 km (0.117 R)
• M6: 4,148,199 km (0.076 R)
• M7: 5,229,942 km (0.095 R)
• M8: 6,249,750 km (0.081 R)
• M9: 8,100,276 km (0.119 R)
• M10: 9,869,121 km (0.12 R)
• M11: 14,211,499 km (0.077 R)
• M12: 14,747,807 km (0.054 R)
• M13: 17,162,317 km (0.069 R)
• M14: 24,159,009 km (0.076 R)
• M15: 25,790,673 km (0.087 R)
• M16: 26,678,237 km (0.104 R)
• M17: 37,150,088 km (0.077 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 764.8

Radius: 7.5

Gravity: 13.6 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 6.77 AU - 7.43 AU

Year: 12029 Days

Day: 19.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 64,276,511 km

• M1: 100,679 km (0.043 R)
• M2: 1,035,367 km (0.043 R)
• M3: 1,393,055 km (0.095 R)
• M4: 2,038,570 km (0.088 R)
• M5: 2,500,678 km (0.12 R)
• M6: 3,054,340 km (0.055 R)
• M7: 3,372,983 km (0.089 R)
• M8: 3,740,994 km (0.061 R)
• M9: 5,209,895 km (0.104 R)
• M10: 7,410,929 km (0.076 R)
• M11: 7,897,571 km (0.086 R)
• M12: 10,220,527 km (0.105 R)
• M13: 11,105,398 km (0.085 R)
• M14: 13,090,562 km (0.042 R)
• M15: 13,605,178 km (0.118 R)
• M16: 13,999,967 km (0.038 R)
• M17: 18,699,734 km (0.057 R)
• M18: 19,936,160 km (0.104 R)
• M19: 20,360,121 km (0.108 R)
• M20: 26,230,042 km (0.105 R)
• M21: 34,333,160 km (0.112 R)
• M22: 44,101,901 km (0.071 R)
• M23: 44,388,979 km (0.119 R)
• M24: 46,730,186 km (0.049 R)
• M25: 47,327,979 km (0.064 R)
• M26: 49,152,325 km (0.115 R)
• M27: 55,571,570 km (0.103 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 537.9

Radius: 7.5

Gravity: 9.56 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 7.87 AU - 12.81 AU

Year: 21140 Days

Day: 17.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 64,276,511 km

• M1: 93,349 km (0.055 R)
• M2: 826,379 km (0.081 R)
• M3: 1,328,130 km (0.072 R)
• M4: 1,573,470 km (0.103 R)
• M5: 3,718,704 km (0.113 R)
• M6: 5,599,448 km (0.094 R)
• M7: 10,560,114 km (0.053 R)
• M8: 15,034,287 km (0.067 R)
• M9: 16,524,730 km (0.045 R)
• M10: 17,599,591 km (0.066 R)
• M11: 18,632,415 km (0.11 R)
• M12: 21,008,179 km (0.114 R)
• M13: 25,476,218 km (0.056 R)
• M14: 35,418,941 km (0.054 R)
• M15: 46,043,233 km (0.119 R)
• M16: 48,163,633 km (0.116 R)
• M17: 49,500,439 km (0.085 R)
• M18: 50,519,051 km (0.061 R)
• M19: 56,557,121 km (0.107 R)
• M20: 69,405,334 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 309.5

Radius: 4.5

Gravity: 15.28 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 9.83 AU - 12.11 AU

Year: 23102 Days

Day: 18.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 64,276,511 km

• M1: 67,917 km (0.11 R)
• M2: 334,052 km (0.073 R)
• M3: 593,156 km (0.093 R)
• M4: 932,743 km (0.076 R)
• M5: 1,305,989 km (0.106 R)
• M6: 1,914,105 km (0.113 R)
• M7: 2,121,148 km (0.115 R)
• M8: 2,384,889 km (0.041 R)
• M9: 2,977,895 km (0.047 R)
• M10: 3,230,416 km (0.102 R)
• M11: 5,415,443 km (0.102 R)
• M12: 6,430,016 km (0.076 R)
• M13: 7,473,461 km (0.072 R)
• M14: 8,035,500 km (0.026 R)
• M15: 9,725,507 km (0.117 R)
• M16: 11,638,864 km (0.098 R)
• M17: 12,457,015 km (0.09 R)
• M18: 14,921,490 km (0.073 R)
• M19: 27,804,410 km (0.111 R)
• M20: 42,491,330 km (0.065 R)
• M21: 46,716,872 km (0.081 R)
• M22: 48,132,367 km (0.075 R)
• M23: 61,242,975 km (0.099 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 383 - 16,686 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit