🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.53

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.53 AU - 0.77 AU

Year: 344 Days

Day: 31.3 Hours

Environment

Temp: -137 °C

Axial Tilt: 9.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 368.2

Radius: 10.3

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.63 AU - 1.01 AU

Year: 487 Days

Day: 12.8 Hours

Environment

Temp: -143 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 70,907,308 km

• M1: 130,150 km (0.093 R)
• M2: 599,439 km (0.119 R)
• M3: 1,072,018 km (0.106 R)
• M4: 1,420,133 km (0.115 R)
• M5: 1,889,571 km (0.094 R)
• M6: 2,344,947 km (0.115 R)
• M7: 3,048,057 km (0.082 R)
• M8: 3,583,168 km (0.074 R)
• M9: 4,379,627 km (0.12 R)
• M10: 4,812,863 km (0.12 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.9

Radius: 10.1

Gravity: 3.75 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 0.94 AU - 0.94 AU

Year: 598 Days

Day: 12.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,907,308 km

• M1: 125,662 km (0.066 R)
• M2: 527,033 km (0.107 R)
• M3: 864,526 km (0.07 R)
• M4: 1,514,080 km (0.12 R)
• M5: 2,101,551 km (0.102 R)
• M6: 2,579,815 km (0.109 R)
• M7: 2,920,150 km (0.109 R)
• M8: 3,314,042 km (0.081 R)
• M9: 3,833,445 km (0.094 R)
• M10: 4,521,895 km (0.106 R)
• M11: 4,942,265 km (0.071 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 257.6

Radius: 15

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.81 AU - 1.09 AU

Year: 607 Days

Day: 14.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 70,907,308 km

• M1: 186,698 km (0.088 R)
• M2: 985,551 km (0.11 R)
• M3: 1,532,780 km (0.099 R)
• M4: 2,120,400 km (0.095 R)
• M5: 2,701,588 km (0.042 R)
• M6: 3,885,655 km (0.069 R)
• M7: 4,582,482 km (0.07 R)
• M8: 5,132,553 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.9

Radius: 11.5

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.05 AU - 1.63 AU

Year: 1018 Days

Day: 7.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 41.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 70,907,308 km

• M1: 143,016 km (0.101 R)
• M2: 581,637 km (0.091 R)
• M3: 1,013,226 km (0.102 R)
• M4: 1,455,288 km (0.107 R)
• M5: 1,889,720 km (0.063 R)
• M6: 2,332,231 km (0.117 R)
• M7: 2,743,176 km (0.065 R)
• M8: 4,143,861 km (0.101 R)
• M9: 4,625,417 km (0.111 R)
• M10: 5,701,773 km (0.086 R)
• M11: 6,059,611 km (0.028 R)
• M12: 7,128,189 km (0.075 R)
• M13: 7,771,011 km (0.064 R)
• M14: 8,159,217 km (0.075 R)
• M15: 8,533,212 km (0.104 R)
• M16: 8,918,726 km (0.098 R)
• M17: 9,754,529 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 586.9

Radius: 9.4

Gravity: 6.64 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.35 AU - 2.11 AU

Year: 1493 Days

Day: 5.3 Hours

Environment

Temp: -185 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 70,907,308 km

• M1: 117,434 km (0.118 R)
• M2: 410,796 km (0.086 R)
• M3: 704,157 km (0.039 R)
• M4: 1,050,626 km (0.076 R)
• M5: 1,393,205 km (0.028 R)
• M6: 1,751,791 km (0.09 R)
• M7: 2,205,970 km (0.073 R)
• M8: 2,858,815 km (0.065 R)
• M9: 3,245,825 km (0.098 R)
• M10: 3,619,072 km (0.111 R)
• M11: 3,951,927 km (0.055 R)
• M12: 4,305,128 km (0.076 R)
• M13: 4,815,555 km (0.095 R)
• M14: 6,938,200 km (0.093 R)
• M15: 7,244,726 km (0.054 R)
• M16: 10,098,455 km (0.113 R)
• M17: 11,774,100 km (0.066 R)
• M18: 12,810,814 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 311.5

Radius: 11.5

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.48 AU - 2.32 AU

Year: 1718 Days

Day: 5.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 70,907,308 km

• M1: 143,614 km (0.095 R)
• M2: 539,899 km (0.096 R)
• M3: 976,425 km (0.078 R)
• M4: 1,661,584 km (0.103 R)
• M5: 2,076,418 km (0.1 R)
• M6: 2,823,809 km (0.085 R)
• M7: 3,421,154 km (0.112 R)
• M8: 4,394,138 km (0.099 R)
• M9: 4,831,712 km (0.094 R)
• M10: 5,318,503 km (0.11 R)
• M11: 7,026,612 km (0.085 R)
• M12: 7,499,192 km (0.025 R)
• M13: 9,367,071 km (0.081 R)
• M14: 11,223,730 km (0.076 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.7

Radius: 15

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 4.26 AU - 4.34 AU

Year: 5849 Days

Day: 6.5 Hours

Environment

Temp: -207 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 70,907,308 km

• M1: 186,549 km (0.114 R)
• M2: 901,028 km (0.081 R)
• M3: 2,013,737 km (0.083 R)
• M4: 3,480,394 km (0.117 R)
• M5: 5,095,603 km (0.045 R)
• M6: 6,894,218 km (0.102 R)
• M7: 7,920,010 km (0.113 R)
• M8: 8,528,275 km (0.065 R)
• M9: 10,723,774 km (0.088 R)
• M10: 12,150,189 km (0.032 R)
• M11: 21,816,456 km (0.058 R)
• M12: 24,975,365 km (0.071 R)
• M13: 27,385,985 km (0.057 R)
• M14: 29,315,648 km (0.084 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 807.3

Radius: 6.8

Gravity: 17.46 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 7.88 AU - 9.34 AU

Year: 16573 Days

Day: 24.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 70,907,308 km

• M1: 84,523 km (0.1 R)
• M2: 314,156 km (0.048 R)
• M3: 659,727 km (0.094 R)
• M4: 891,304 km (0.081 R)
• M5: 1,573,620 km (0.118 R)
• M6: 1,811,929 km (0.117 R)
• M7: 2,054,727 km (0.08 R)
• M8: 2,277,179 km (0.113 R)
• M9: 2,967,573 km (0.068 R)
• M10: 4,285,680 km (0.113 R)
• M11: 6,035,676 km (0.099 R)
• M12: 6,495,390 km (0.077 R)
• M13: 6,933,263 km (0.085 R)
• M14: 7,205,381 km (0.065 R)
• M15: 7,917,019 km (0.107 R)
• M16: 8,467,838 km (0.106 R)
• M17: 8,779,001 km (0.088 R)
• M18: 10,450,458 km (0.078 R)
• M19: 10,990,656 km (0.06 R)
• M20: 11,298,678 km (0.105 R)
• M21: 11,739,693 km (0.117 R)
• M22: 14,556,172 km (0.054 R)
• M23: 15,305,957 km (0.083 R)
• M24: 15,845,855 km (0.104 R)
• M25: 17,127,460 km (0.12 R)
• M26: 18,737,433 km (0.094 R)
• M27: 19,266,261 km (0.103 R)
• M28: 26,408,961 km (0.09 R)
• M29: 29,962,958 km (0.045 R)
• M30: 30,564,491 km (0.1 R)
• M31: 31,543,609 km (0.114 R)
• M32: 35,402,187 km (0.078 R)
• M33: 49,844,365 km (0.111 R)
• M34: 54,695,674 km (0.119 R)
• M35: 58,908,799 km (0.093 R)
• M36: 60,232,740 km (0.105 R)
• M37: 65,324,154 km (0.059 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 551 - 16,273 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit