🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.38

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.46 AU - 0.58 AU

Year: 246 Days

Day: 21.7 Hours

Environment

Temp: -118 °C

Axial Tilt: 8.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 366.4

Radius: 14.9

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.89 AU - 1.07 AU

Year: 636 Days

Day: 6.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 34,915,425 km

• M1: 185,352 km (0.081 R)
• M2: 677,230 km (0.087 R)
• M3: 1,197,381 km (0.106 R)
• M4: 1,938,938 km (0.109 R)
• M5: 2,516,386 km (0.107 R)
• M6: 2,997,044 km (0.035 R)
• M7: 3,490,717 km (0.119 R)
• M8: 4,066,070 km (0.113 R)
• M9: 4,840,239 km (0.118 R)
• M10: 5,779,415 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 779.8

Radius: 14.5

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.41 AU - 1.95 AU

Year: 1428 Days

Day: 5 Hours

Environment

Temp: -176 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 34,915,425 km

• M1: 180,265 km (0.072 R)
• M2: 1,137,991 km (0.076 R)
• M3: 1,608,626 km (0.114 R)
• M4: 2,201,033 km (0.104 R)
• M5: 3,009,012 km (0.098 R)
• M6: 3,652,432 km (0.031 R)
• M7: 4,331,008 km (0.05 R)
• M8: 5,217,824 km (0.041 R)
• M9: 5,671,554 km (0.092 R)
• M10: 7,194,610 km (0.113 R)
• M11: 7,869,446 km (0.114 R)
• M12: 8,854,848 km (0.057 R)
• M13: 9,346,426 km (0.09 R)
• M14: 12,651,043 km (0.112 R)
• M15: 13,636,145 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.9

Radius: 11.2

Gravity: 6.52 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.9 AU - 2.74 AU

Year: 2318 Days

Day: 12.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 34,915,425 km

• M1: 139,276 km (0.04 R)
• M2: 566,527 km (0.096 R)
• M3: 1,251,985 km (0.098 R)
• M4: 1,910,215 km (0.05 R)
• M5: 2,802,417 km (0.076 R)
• M6: 3,155,767 km (0.084 R)
• M7: 3,611,891 km (0.1 R)
• M8: 3,992,468 km (0.114 R)
• M9: 4,812,564 km (0.09 R)
• M10: 5,180,125 km (0.047 R)
• M11: 5,792,280 km (0.028 R)
• M12: 6,262,466 km (0.092 R)
• M13: 7,073,436 km (0.061 R)
• M14: 10,914,212 km (0.083 R)
• M15: 12,004,481 km (0.107 R)
• M16: 12,468,833 km (0.112 R)
• M17: 12,901,470 km (0.119 R)
• M18: 14,828,889 km (0.104 R)
• M19: 15,216,647 km (0.108 R)
• M20: 16,164,948 km (0.089 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 164.1

Radius: 10

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 3.98 AU - 4.98 AU

Year: 6221 Days

Day: 6.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 34,915,425 km

• M1: 124,316 km (0.066 R)
• M2: 650,452 km (0.044 R)
• M3: 987,196 km (0.101 R)
• M4: 1,733,839 km (0.037 R)
• M5: 2,169,468 km (0.045 R)
• M6: 2,836,675 km (0.052 R)
• M7: 4,420,318 km (0.056 R)
• M8: 5,594,960 km (0.109 R)
• M9: 5,912,108 km (0.115 R)
• M10: 7,087,349 km (0.085 R)
• M11: 7,427,833 km (0.066 R)
• M12: 8,723,650 km (0.077 R)
• M13: 10,086,786 km (0.05 R)
• M14: 11,292,246 km (0.104 R)
• M15: 13,184,210 km (0.092 R)
• M16: 15,587,500 km (0.093 R)
• M17: 18,675,349 km (0.12 R)
• M18: 20,799,938 km (0.088 R)
• M19: 21,435,430 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.5

Radius: 9.8

Gravity: 7.81 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 4.27 AU - 6.67 AU

Year: 8392 Days

Day: 13.3 Hours

Environment

Temp: -222 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 34,915,425 km

• M1: 121,922 km (0.106 R)
• M2: 582,385 km (0.119 R)
• M3: 1,013,974 km (0.109 R)
• M4: 1,428,061 km (0.082 R)
• M5: 1,860,399 km (0.032 R)
• M6: 3,232,960 km (0.117 R)
• M7: 4,761,551 km (0.115 R)
• M8: 5,185,960 km (0.112 R)
• M9: 7,064,161 km (0.058 R)
• M10: 7,496,200 km (0.098 R)
• M11: 11,454,410 km (0.115 R)
• M12: 12,555,749 km (0.083 R)
• M13: 16,215,212 km (0.073 R)
• M14: 18,766,903 km (0.091 R)
• M15: 24,295,891 km (0.097 R)
• M16: 29,695,626 km (0.113 R)
• M17: 34,374,000 km (0.073 R)
• M18: 43,051,425 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 259.3

Radius: 6.2

Gravity: 6.75 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 6.87 AU - 7.25 AU

Year: 12306 Days

Day: 23.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 34,915,425 km

• M1: 77,342 km (0.106 R)
• M2: 316,699 km (0.087 R)
• M3: 1,331,122 km (0.039 R)
• M4: 3,042,521 km (0.065 R)
• M5: 3,602,766 km (0.053 R)
• M6: 5,348,872 km (0.061 R)
• M7: 6,369,728 km (0.082 R)
• M8: 7,791,057 km (0.091 R)
• M9: 8,790,520 km (0.037 R)
• M10: 9,502,756 km (0.115 R)
• M11: 13,019,203 km (0.063 R)
• M12: 17,660,627 km (0.108 R)
• M13: 22,555,021 km (0.077 R)
• M14: 27,159,493 km (0.083 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 787.8

Radius: 8

Gravity: 12.31 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 5.93 AU - 8.41 AU

Year: 12595 Days

Day: 16.3 Hours

Environment

Temp: -233 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 34,915,425 km

• M1: 137,929 km (0.092 R)
• M2: 391,797 km (0.044 R)
• M3: 713,582 km (0.046 R)
• M4: 991,385 km (0.082 R)
• M5: 1,600,548 km (0.116 R)
• M6: 2,737,491 km (0.111 R)
• M7: 3,541,281 km (0.1 R)
• M8: 6,936,404 km (0.106 R)
• M9: 7,408,236 km (0.104 R)
• M10: 8,085,915 km (0.116 R)
• M11: 9,668,959 km (0.11 R)
• M12: 10,367,731 km (0.042 R)
• M13: 11,157,159 km (0.096 R)
• M14: 13,436,282 km (0.045 R)
• M15: 18,241,964 km (0.113 R)
• M16: 19,897,714 km (0.109 R)
• M17: 22,845,091 km (0.118 R)
• M18: 23,888,835 km (0.106 R)
• M19: 25,163,110 km (0.112 R)
• M20: 27,846,297 km (0.037 R)
• M21: 31,287,796 km (0.081 R)
• M22: 32,337,674 km (0.067 R)
• M23: 35,502,417 km (0.065 R)
• M24: 39,269,441 km (0.091 R)
• M25: 39,944,726 km (0.093 R)
• M26: 43,151,356 km (0.034 R)
• M27: 44,597,519 km (0.089 R)
• M28: 46,375,340 km (0.061 R)
• M29: 50,229,729 km (0.049 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 138.5

Radius: 5.3

Gravity: 4.93 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 6.05 AU - 9.21 AU

Year: 13826 Days

Day: 15.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 34,915,425 km

• M1: 66,122 km (0.039 R)
• M2: 293,810 km (0.073 R)
• M3: 767,138 km (0.093 R)
• M4: 1,144,873 km (0.087 R)
• M5: 2,611,081 km (0.065 R)
• M6: 3,661,109 km (0.104 R)
• M7: 4,191,134 km (0.036 R)
• M8: 5,645,375 km (0.101 R)
• M9: 7,150,778 km (0.093 R)
• M10: 8,738,460 km (0.047 R)
• M11: 10,736,190 km (0.037 R)
• M12: 12,122,065 km (0.079 R)
• M13: 16,350,748 km (0.047 R)
• M14: 17,842,089 km (0.112 R)
• M15: 19,563,362 km (0.083 R)
• M16: 22,001,060 km (0.064 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 204 - 14,854 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit