🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.38

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.48 AU - 0.6 AU

Year: 252 Days

Day: 22.5 Hours

Environment

Temp: -117 °C

Axial Tilt: 49.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.55 AU - 0.55 AU

Year: 259 Days

Day: 40.9 Hours

Environment

Temp: -124 °C

Axial Tilt: 24.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.63

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.51 AU - 0.61 AU

Year: 266 Days

Day: 13.3 Hours

Environment

Temp: -132 °C

Axial Tilt: 29.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 27,751,558 km

• M1: 103,821 km (0.099 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 773.9

Radius: 11.8

Gravity: 5.56 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.85 AU - 0.89 AU

Year: 516 Days

Day: 14.1 Hours

Environment

Temp: -153 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,751,558 km

• M1: 146,756 km (0.106 R)
• M2: 634,295 km (0.114 R)
• M3: 1,088,025 km (0.096 R)
• M4: 1,530,536 km (0.075 R)
• M5: 1,938,788 km (0.104 R)
• M6: 2,400,597 km (0.117 R)
• M7: 3,360,567 km (0.106 R)
• M8: 3,745,781 km (0.119 R)
• M9: 4,276,405 km (0.108 R)
• M10: 4,793,415 km (0.063 R)
• M11: 5,771,635 km (0.108 R)
• M12: 6,501,224 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 570.5

Radius: 8.7

Gravity: 7.54 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 2.26 AU - 3.06 AU

Year: 2758 Days

Day: 11.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 27,751,558 km

• M1: 108,159 km (0.065 R)
• M2: 754,422 km (0.1 R)
• M3: 1,094,308 km (0.059 R)
• M4: 1,506,002 km (0.119 R)
• M5: 2,183,531 km (0.11 R)
• M6: 2,512,047 km (0.107 R)
• M7: 2,873,476 km (0.119 R)
• M8: 3,304,168 km (0.106 R)
• M9: 3,701,799 km (0.049 R)
• M10: 4,295,254 km (0.081 R)
• M11: 4,725,049 km (0.115 R)
• M12: 5,254,625 km (0.086 R)
• M13: 5,671,106 km (0.093 R)
• M14: 6,653,814 km (0.094 R)
• M15: 7,996,904 km (0.101 R)
• M16: 8,884,917 km (0.086 R)
• M17: 9,229,889 km (0.095 R)
• M18: 9,512,480 km (0.084 R)
• M19: 10,094,715 km (0.115 R)
• M20: 10,470,505 km (0.104 R)
• M21: 11,410,877 km (0.095 R)
• M22: 13,549,079 km (0.092 R)
• M23: 14,192,649 km (0.05 R)
• M24: 15,590,492 km (0.083 R)
• M25: 16,297,192 km (0.031 R)
• M26: 17,397,036 km (0.064 R)
• M27: 18,657,547 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 602.7

Radius: 13.8

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 2.42 AU - 3.5 AU

Year: 3238 Days

Day: 13 Hours

Environment

Temp: -212 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,751,558 km

• M1: 171,589 km (0.095 R)
• M2: 608,863 km (0.045 R)
• M3: 1,216,380 km (0.061 R)
• M4: 1,763,460 km (0.085 R)
• M5: 3,406,792 km (0.06 R)
• M6: 3,864,711 km (0.095 R)
• M7: 4,320,686 km (0.087 R)
• M8: 5,145,120 km (0.091 R)
• M9: 5,751,440 km (0.116 R)
• M10: 6,265,009 km (0.037 R)
• M11: 7,636,523 km (0.062 R)
• M12: 9,866,578 km (0.098 R)
• M13: 10,565,350 km (0.088 R)
• M14: 12,546,325 km (0.119 R)
• M15: 14,516,529 km (0.062 R)
• M16: 15,115,518 km (0.08 R)
• M17: 19,419,898 km (0.098 R)
• M18: 19,964,135 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.7

Radius: 14.1

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 3.29 AU - 5.17 AU

Year: 5532 Days

Day: 7 Hours

Environment

Temp: -220 °C

Axial Tilt: 98 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 27,751,558 km

• M1: 176,376 km (0.12 R)
• M2: 651,349 km (0.051 R)
• M3: 1,440,478 km (0.081 R)
• M4: 2,436,052 km (0.043 R)
• M5: 3,237,896 km (0.057 R)
• M6: 3,701,650 km (0.034 R)
• M7: 4,541,941 km (0.1 R)
• M8: 5,126,270 km (0.093 R)
• M9: 7,021,376 km (0.1 R)
• M10: 8,055,397 km (0.119 R)
• M11: 8,914,986 km (0.058 R)
• M12: 9,670,455 km (0.073 R)
• M13: 11,492,408 km (0.106 R)
• M14: 12,052,801 km (0.088 R)
• M15: 13,585,132 km (0.099 R)
• M16: 14,158,990 km (0.103 R)
• M17: 15,022,618 km (0.057 R)
• M18: 17,094,249 km (0.1 R)
• M19: 20,077,381 km (0.077 R)
• M20: 21,939,874 km (0.115 R)
• M21: 23,170,167 km (0.071 R)
• M22: 24,369,643 km (0.081 R)
• M23: 25,531,420 km (0.115 R)
• M24: 28,049,002 km (0.066 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 679.2

Radius: 13.9

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 3.98 AU - 6.46 AU

Year: 7583 Days

Day: 9.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 27,751,558 km

• M1: 173,534 km (0.095 R)
• M2: 605,871 km (0.12 R)
• M3: 1,230,742 km (0.116 R)
• M4: 2,113,070 km (0.118 R)
• M5: 2,980,887 km (0.041 R)
• M6: 7,310,399 km (0.068 R)
• M7: 7,854,187 km (0.095 R)
• M8: 8,635,537 km (0.04 R)
• M9: 9,243,952 km (0.083 R)
• M10: 10,841,208 km (0.093 R)
• M11: 11,705,884 km (0.094 R)
• M12: 12,452,078 km (0.098 R)
• M13: 13,286,385 km (0.049 R)
• M14: 13,804,742 km (0.105 R)
• M15: 14,820,811 km (0.045 R)
• M16: 16,339,229 km (0.028 R)
• M17: 17,476,173 km (0.097 R)
• M18: 19,832,639 km (0.085 R)
• M19: 21,833,061 km (0.1 R)
• M20: 22,964,320 km (0.082 R)
• M21: 25,081,130 km (0.111 R)
• M22: 34,532,424 km (0.116 R)
• M23: 35,184,821 km (0.032 R)
• M24: 37,305,071 km (0.117 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 193.4

Radius: 9.7

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 4.77 AU - 6.31 AU

Year: 8291 Days

Day: 13.6 Hours

Environment

Temp: -221 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 27,751,558 km

• M1: 121,473 km (0.072 R)
• M2: 512,223 km (0.085 R)
• M3: 927,956 km (0.112 R)
• M4: 1,388,418 km (0.089 R)
• M5: 1,875,808 km (0.096 R)
• M6: 2,379,354 km (0.117 R)
• M7: 3,157,263 km (0.076 R)
• M8: 3,512,708 km (0.091 R)
• M9: 4,399,374 km (0.119 R)
• M10: 4,742,851 km (0.084 R)
• M11: 5,077,801 km (0.093 R)
• M12: 6,269,796 km (0.115 R)
• M13: 7,569,503 km (0.095 R)
• M14: 8,732,177 km (0.062 R)
• M15: 9,158,232 km (0.115 R)
• M16: 11,181,693 km (0.051 R)
• M17: 13,182,564 km (0.116 R)
• M18: 14,427,368 km (0.034 R)
• M19: 15,299,823 km (0.074 R)
• M20: 15,805,763 km (0.043 R)
• M21: 17,330,165 km (0.032 R)
• M22: 19,208,217 km (0.088 R)
• M23: 19,534,041 km (0.101 R)
• M24: 20,398,118 km (0.078 R)
• M25: 20,805,473 km (0.07 R)
• M26: 23,438,546 km (0.078 R)
• M27: 24,719,851 km (0.101 R)
• M28: 27,175,351 km (0.084 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 427 - 19,281 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit