🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.55 AU - 0.63 AU

Year: 293 Days

Day: 34.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 3.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.58 AU - 0.64 AU

Year: 308 Days

Day: 34.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 43,987,876 km

• M1: 95,144 km (0.12 R)
• M2: 105,915 km (0.044 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 860.5

Radius: 12.7

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.69 AU - 0.73 AU

Year: 386 Days

Day: 9.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 43,987,876 km

• M1: 157,975 km (0.103 R)
• M2: 587,172 km (0.053 R)
• M3: 1,009,486 km (0.069 R)
• M4: 1,419,085 km (0.074 R)
• M5: 1,958,535 km (0.1 R)
• M6: 2,470,010 km (0.066 R)
• M7: 3,070,048 km (0.114 R)
• M8: 3,653,180 km (0.091 R)
• M9: 4,267,878 km (0.113 R)
• M10: 4,905,165 km (0.069 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 554.4

Radius: 12

Gravity: 3.85 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.68 AU - 1 AU

Year: 497 Days

Day: 12.3 Hours

Environment

Temp: -148 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,987,876 km

• M1: 149,299 km (0.075 R)
• M2: 526,136 km (0.089 R)
• M3: 1,107,922 km (0.113 R)
• M4: 1,499,270 km (0.079 R)
• M5: 1,952,551 km (0.107 R)
• M6: 2,487,813 km (0.077 R)
• M7: 3,031,152 km (0.044 R)
• M8: 4,000,995 km (0.036 R)
• M9: 4,558,397 km (0.074 R)
• M10: 5,458,527 km (0.106 R)
• M11: 5,968,656 km (0.056 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 829.9

Radius: 12.4

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.98 AU - 1.12 AU

Year: 695 Days

Day: 8.3 Hours

Environment

Temp: -151 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 43,987,876 km

• M1: 154,235 km (0.095 R)
• M2: 549,922 km (0.091 R)
• M3: 1,068,877 km (0.077 R)
• M4: 1,580,651 km (0.093 R)
• M5: 2,098,260 km (0.098 R)
• M6: 2,670,920 km (0.037 R)
• M7: 3,063,166 km (0.097 R)
• M8: 3,549,359 km (0.092 R)
• M9: 4,041,237 km (0.042 R)
• M10: 4,762,299 km (0.073 R)
• M11: 6,072,926 km (0.085 R)
• M12: 7,311,446 km (0.108 R)
• M13: 7,846,857 km (0.087 R)
• M14: 8,358,482 km (0.083 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 812

Radius: 13.5

Gravity: 4.46 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 1.04 AU - 1.58 AU

Year: 968 Days

Day: 13 Hours

Environment

Temp: -176 °C

Axial Tilt: 3.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 43,987,876 km

• M1: 167,849 km (0.043 R)
• M2: 634,893 km (0.085 R)
• M3: 1,089,372 km (0.026 R)
• M4: 1,919,490 km (0.084 R)
• M5: 2,569,194 km (0.1 R)
• M6: 3,032,498 km (0.069 R)
• M7: 4,280,145 km (0.11 R)
• M8: 4,844,278 km (0.101 R)
• M9: 6,122,442 km (0.097 R)
• M10: 7,100,364 km (0.085 R)
• M11: 7,971,173 km (0.076 R)
• M12: 8,527,079 km (0.103 R)
• M13: 8,995,918 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 881.3

Radius: 9

Gravity: 10.88 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 2.06 AU - 2.12 AU

Year: 1951 Days

Day: 12.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 43,987,876 km

• M1: 111,899 km (0.071 R)
• M2: 563,834 km (0.111 R)
• M3: 911,350 km (0.04 R)
• M4: 1,430,754 km (0.081 R)
• M5: 1,875,209 km (0.077 R)
• M6: 2,187,121 km (0.088 R)
• M7: 2,547,801 km (0.079 R)
• M8: 3,441,798 km (0.099 R)
• M9: 3,819,383 km (0.107 R)
• M10: 4,204,598 km (0.118 R)
• M11: 4,744,048 km (0.08 R)
• M12: 6,751,950 km (0.111 R)
• M13: 7,287,810 km (0.025 R)
• M14: 8,999,658 km (0.081 R)
• M15: 10,850,334 km (0.112 R)
• M16: 11,467,574 km (0.079 R)
• M17: 12,230,524 km (0.09 R)
• M18: 12,520,145 km (0.042 R)
• M19: 13,242,254 km (0.112 R)
• M20: 15,003,918 km (0.063 R)
• M21: 15,575,981 km (0.12 R)
• M22: 17,431,742 km (0.112 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 60.2

Radius: 8.5

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 2.07 AU - 3.27 AU

Year: 2817 Days

Day: 8.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 43,987,876 km

• M1: 176,974 km (0.055 R)
• M2: 693,835 km (0.054 R)
• M3: 1,004,101 km (0.076 R)
• M4: 1,899,444 km (0.038 R)
• M5: 2,603,153 km (0.086 R)
• M6: 3,053,592 km (0.073 R)
• M7: 3,583,916 km (0.096 R)
• M8: 4,158,222 km (0.045 R)
• M9: 4,602,678 km (0.118 R)
• M10: 5,664,823 km (0.082 R)
• M11: 6,295,527 km (0.092 R)
• M12: 7,040,076 km (0.103 R)
• M13: 7,696,362 km (0.113 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 195.5

Radius: 9.5

Gravity: 2.17 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 2.57 AU - 2.79 AU

Year: 2833 Days

Day: 7.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 43,987,876 km

• M1: 118,182 km (0.069 R)
• M2: 516,262 km (0.097 R)
• M3: 870,360 km (0.081 R)
• M4: 1,206,058 km (0.12 R)
• M5: 1,705,715 km (0.115 R)
• M6: 2,475,246 km (0.106 R)
• M7: 3,121,210 km (0.114 R)
• M8: 4,323,827 km (0.114 R)
• M9: 4,687,350 km (0.11 R)
• M10: 5,742,913 km (0.032 R)
• M11: 6,472,651 km (0.103 R)
• M12: 7,316,084 km (0.05 R)
• M13: 7,722,840 km (0.079 R)
• M14: 8,087,560 km (0.114 R)
• M15: 9,857,303 km (0.055 R)
• M16: 11,834,388 km (0.11 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 354.8

Radius: 7.2

Gravity: 6.84 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 5.85 AU - 8.35 AU

Year: 12215 Days

Day: 18.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 43,987,876 km

• M1: 89,908 km (0.046 R)
• M2: 358,586 km (0.093 R)
• M3: 982,708 km (0.04 R)
• M4: 1,582,596 km (0.062 R)
• M5: 2,277,328 km (0.098 R)
• M6: 2,633,970 km (0.09 R)
• M7: 4,418,373 km (0.103 R)
• M8: 6,514,688 km (0.05 R)
• M9: 7,117,867 km (0.079 R)
• M10: 7,393,127 km (0.096 R)
• M11: 12,425,450 km (0.105 R)
• M12: 18,387,822 km (0.1 R)
• M13: 21,405,959 km (0.111 R)
• M14: 24,029,008 km (0.107 R)
• M15: 27,720,186 km (0.111 R)
• M16: 29,296,798 km (0.106 R)
• M17: 32,412,473 km (0.102 R)
• M18: 36,434,561 km (0.087 R)
• M19: 39,415,449 km (0.103 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: 324 - 12,030 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit