🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.14

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.61 AU - 0.65 AU

Year: 323 Days

Day: 34.4 Hours

Environment

Temp: -139 °C

Axial Tilt: 6.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 78,802,267 km

• M1: 47,572 km (0.068 R)
• M2: 269,575 km (0.097 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 608.8

Radius: 14.8

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.67 AU - 0.89 AU

Year: 445 Days

Day: 6.3 Hours

Environment

Temp: -150 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 78,802,267 km

• M1: 184,155 km (0.05 R)
• M2: 722,259 km (0.092 R)
• M3: 1,352,066 km (0.118 R)
• M4: 1,937,592 km (0.12 R)
• M5: 2,408,227 km (0.078 R)
• M6: 3,352,189 km (0.05 R)
• M7: 3,923,653 km (0.09 R)
• M8: 4,821,539 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 331.4

Radius: 13.6

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.64 AU - 0.98 AU

Year: 471 Days

Day: 5.7 Hours

Environment

Temp: -153 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 78,802,267 km

• M1: 169,644 km (0.057 R)
• M2: 854,503 km (0.087 R)
• M3: 1,303,446 km (0.101 R)
• M4: 1,766,003 km (0.109 R)
• M5: 3,309,554 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 977.1

Radius: 8.4

Gravity: 13.85 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.88 AU - 1.02 AU

Year: 598 Days

Day: 9.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 78,802,267 km

• M1: 105,616 km (0.062 R)
• M2: 419,024 km (0.1 R)
• M3: 743,053 km (0.047 R)
• M4: 1,051,075 km (0.1 R)
• M5: 1,550,283 km (0.072 R)
• M6: 1,908,270 km (0.107 R)
• M7: 2,850,737 km (0.112 R)
• M8: 3,338,725 km (0.103 R)
• M9: 3,910,788 km (0.099 R)
• M10: 4,259,351 km (0.053 R)
• M11: 4,595,647 km (0.083 R)
• M12: 5,866,181 km (0.062 R)
• M13: 6,142,040 km (0.083 R)
• M14: 6,869,983 km (0.062 R)
• M15: 7,199,098 km (0.041 R)
• M16: 7,492,759 km (0.119 R)
• M17: 7,936,317 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 692.8

Radius: 12.6

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1.18 AU - 1.62 AU

Year: 1070 Days

Day: 5.3 Hours

Environment

Temp: -175 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,802,267 km

• M1: 156,779 km (0.057 R)
• M2: 795,412 km (0.118 R)
• M3: 1,230,891 km (0.105 R)
• M4: 1,685,220 km (0.045 R)
• M5: 3,010,358 km (0.117 R)
• M6: 3,516,298 km (0.067 R)
• M7: 4,592,505 km (0.107 R)
• M8: 5,168,756 km (0.084 R)
• M9: 6,069,335 km (0.042 R)
• M10: 7,216,751 km (0.112 R)
• M11: 7,790,908 km (0.12 R)
• M12: 10,429,964 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 501.1

Radius: 12.5

Gravity: 3.21 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 3.54 AU - 5 AU

Year: 5697 Days

Day: 5.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 78,802,267 km

• M1: 155,432 km (0.061 R)
• M2: 656,585 km (0.115 R)
• M3: 1,638,994 km (0.101 R)
• M4: 4,477,015 km (0.12 R)
• M5: 8,799,347 km (0.11 R)
• M6: 15,557,879 km (0.059 R)
• M7: 17,906,716 km (0.034 R)
• M8: 20,345,161 km (0.113 R)
• M9: 20,760,445 km (0.086 R)
• M10: 26,605,981 km (0.085 R)
• M11: 27,269,897 km (0.103 R)
• M12: 27,775,089 km (0.067 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 72.7

Radius: 6.6

Gravity: 1.67 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 5.47 AU - 7.75 AU

Year: 10973 Days

Day: 22.6 Hours

Environment

Temp: -212 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 78,802,267 km

• M1: 82,129 km (0.08 R)
• M2: 514,766 km (0.047 R)
• M3: 1,053,019 km (0.032 R)
• M4: 1,381,686 km (0.04 R)
• M5: 2,861,209 km (0.111 R)
• M6: 3,484,733 km (0.052 R)
• M7: 4,041,686 km (0.115 R)
• M8: 4,923,864 km (0.078 R)
• M9: 5,279,309 km (0.075 R)
• M10: 6,184,825 km (0.025 R)
• M11: 9,327,278 km (0.094 R)
• M12: 9,558,107 km (0.105 R)
• M13: 10,561,161 km (0.066 R)
• M14: 10,896,410 km (0.118 R)
• M15: 17,975,680 km (0.087 R)
• M16: 19,001,922 km (0.075 R)
• M17: 21,236,914 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 372.4

Radius: 6.1

Gravity: 10.01 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 5.64 AU - 8.7 AU

Year: 12396 Days

Day: 17.3 Hours

Environment

Temp: -232 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 78,802,267 km

• M1: 75,996 km (0.12 R)
• M2: 555,756 km (0.074 R)
• M3: 797,057 km (0.076 R)
• M4: 1,379,891 km (0.098 R)
• M5: 1,785,451 km (0.079 R)
• M6: 1,975,290 km (0.114 R)
• M7: 2,395,959 km (0.1 R)
• M8: 3,114,328 km (0.107 R)
• M9: 3,709,279 km (0.114 R)
• M10: 4,128,153 km (0.075 R)
• M11: 5,059,998 km (0.118 R)
• M12: 5,743,212 km (0.082 R)
• M13: 6,823,608 km (0.114 R)
• M14: 7,780,436 km (0.059 R)
• M15: 9,617,198 km (0.031 R)
• M16: 10,661,691 km (0.113 R)
• M17: 12,740,652 km (0.11 R)
• M18: 13,875,053 km (0.09 R)
• M19: 14,372,167 km (0.116 R)
• M20: 15,270,801 km (0.099 R)
• M21: 17,250,430 km (0.082 R)
• M22: 17,752,779 km (0.116 R)
• M23: 20,411,582 km (0.049 R)
• M24: 21,793,867 km (0.118 R)
• M25: 22,892,214 km (0.093 R)
• M26: 23,324,402 km (0.106 R)
• M27: 24,473,314 km (0.116 R)
• M28: 30,164,765 km (0.104 R)
• M29: 32,603,210 km (0.084 R)
• M30: 34,941,724 km (0.077 R)
• M31: 35,977,241 km (0.085 R)
• M32: 37,748,330 km (0.095 R)
• M33: 39,825,048 km (0.119 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 582.8

Radius: 5.5

Gravity: 19.27 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 8.28 AU - 13.28 AU

Year: 22853 Days

Day: 23.6 Hours

Environment

Temp: -237 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 78,802,267 km

• M1: 70,161 km (0.033 R)
• M2: 339,438 km (0.116 R)
• M3: 661,223 km (0.071 R)
• M4: 2,302,311 km (0.091 R)
• M5: 3,055,088 km (0.105 R)
• M6: 3,960,304 km (0.076 R)
• M7: 5,415,742 km (0.117 R)
• M8: 6,241,373 km (0.092 R)
• M9: 6,549,245 km (0.064 R)
• M10: 10,148,271 km (0.053 R)
• M11: 10,635,810 km (0.105 R)
• M12: 14,572,777 km (0.066 R)
• M13: 17,590,166 km (0.096 R)
• M14: 17,764,298 km (0.082 R)
• M15: 24,175,315 km (0.108 R)
• M16: 42,221,456 km (0.08 R)
• M17: 55,760,662 km (0.091 R)
• M18: 58,815,151 km (0.101 R)
• M19: 60,383,385 km (0.095 R)
• M20: 61,979,295 km (0.113 R)
• M21: 63,807,980 km (0.115 R)
• M22: 71,483,099 km (0.035 R)
• M23: 74,399,210 km (0.119 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 175 - 18,090 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit