🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.38 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.35

Radius: 1.13

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.71 AU - 0.81 AU

Year: 251 Days

Day: 23.3 Hours

Environment

Temp: 80 °C

Axial Tilt: 10.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 73,537,658 km

• M1: 36,053 km (0.038 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.59

Radius: 1.46

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.78 AU - 1.28 AU

Year: 396 Days

Day: 34.4 Hours

Environment

Temp: 22 °C

Axial Tilt: 22 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.35

Radius: 1.13

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.99 AU - 1.59 AU

Year: 555 Days

Day: 45.7 Hours

Environment

Temp: -27 °C

Axial Tilt: 0.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 4.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 971.3

Radius: 14.9

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 4.28 AU - 5.32 AU

Year: 3983 Days

Day: 5.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 73,537,658 km

• M1: 185,352 km (0.091 R)
• M2: 671,246 km (0.053 R)
• M3: 1,448,706 km (0.055 R)
• M4: 2,067,143 km (0.115 R)
• M5: 2,619,309 km (0.086 R)
• M6: 3,348,898 km (0.07 R)
• M7: 5,749,645 km (0.081 R)
• M8: 6,256,183 km (0.12 R)
• M9: 8,588,863 km (0.061 R)
• M10: 9,495,575 km (0.068 R)
• M11: 11,500,037 km (0.072 R)
• M12: 15,636,269 km (0.119 R)
• M13: 19,857,771 km (0.089 R)
• M14: 20,536,796 km (0.111 R)
• M15: 23,484,472 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 178.6

Radius: 10.5

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 4.99 AU - 5.03 AU

Year: 4247 Days

Day: 5.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 73,537,658 km

• M1: 130,599 km (0.094 R)
• M2: 1,467,406 km (0.078 R)
• M3: 2,029,594 km (0.1 R)
• M4: 2,925,686 km (0.066 R)
• M5: 5,112,358 km (0.113 R)
• M6: 5,601,692 km (0.069 R)
• M7: 5,995,284 km (0.072 R)
• M8: 8,061,979 km (0.117 R)
• M9: 8,564,777 km (0.104 R)
• M10: 11,753,007 km (0.118 R)
• M11: 13,809,379 km (0.047 R)
• M12: 15,228,166 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.7

Radius: 11

Gravity: 1.74 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 4.29 AU - 7.03 AU

Year: 5100 Days

Day: 14.6 Hours

Environment

Temp: -151 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 73,537,658 km

• M1: 140,472 km (0.036 R)
• M2: 514,317 km (0.11 R)
• M3: 1,047,035 km (0.112 R)
• M4: 1,509,891 km (0.107 R)
• M5: 1,872,666 km (0.054 R)
• M6: 2,405,833 km (0.053 R)
• M7: 2,826,502 km (0.047 R)
• M8: 4,119,327 km (0.091 R)
• M9: 4,635,290 km (0.112 R)
• M10: 5,390,161 km (0.089 R)
• M11: 6,760,328 km (0.072 R)
• M12: 7,480,193 km (0.04 R)
• M13: 7,955,465 km (0.048 R)
• M14: 8,654,835 km (0.117 R)
• M15: 9,576,807 km (0.06 R)
• M16: 11,000,231 km (0.054 R)
• M17: 11,783,675 km (0.038 R)
• M18: 13,508,239 km (0.109 R)
• M19: 14,455,044 km (0.063 R)
• M20: 15,957,605 km (0.116 R)
• M21: 17,839,247 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203.2

Radius: 10.6

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 5.8 AU - 6.24 AU

Year: 5594 Days

Day: 5.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 73,537,658 km

• M1: 131,796 km (0.119 R)
• M2: 1,056,759 km (0.056 R)
• M3: 1,533,229 km (0.035 R)
• M4: 1,969,456 km (0.064 R)
• M5: 2,893,522 km (0.089 R)
• M6: 3,453,766 km (0.104 R)
• M7: 4,105,863 km (0.055 R)
• M8: 4,814,807 km (0.095 R)
• M9: 6,028,794 km (0.078 R)
• M10: 6,678,199 km (0.12 R)
• M11: 9,051,718 km (0.097 R)
• M12: 10,408,421 km (0.043 R)
• M13: 11,982,640 km (0.071 R)
• M14: 12,333,297 km (0.052 R)
• M15: 13,286,535 km (0.105 R)
• M16: 14,983,573 km (0.09 R)
• M17: 16,603,269 km (0.079 R)
• M18: 17,094,698 km (0.114 R)
• M19: 19,698,599 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 300.7

Radius: 5.4

Gravity: 10.31 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 10.49 AU - 14.31 AU

Year: 16538 Days

Day: 22.1 Hours

Environment

Temp: -198 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,537,658 km

• M1: 67,169 km (0.091 R)
• M2: 283,488 km (0.097 R)
• M3: 587,022 km (0.118 R)
• M4: 1,582,895 km (0.1 R)
• M5: 2,343,301 km (0.104 R)
• M6: 5,588,976 km (0.107 R)
• M7: 8,123,164 km (0.034 R)
• M8: 10,676,650 km (0.095 R)
• M9: 11,056,779 km (0.104 R)
• M10: 14,627,979 km (0.091 R)
• M11: 18,820,908 km (0.112 R)
• M12: 20,022,628 km (0.102 R)
• M13: 22,225,456 km (0.107 R)
• M14: 32,541,426 km (0.111 R)
• M15: 33,686,000 km (0.094 R)
• M16: 34,975,982 km (0.11 R)
• M17: 50,336,991 km (0.034 R)

Planet 9 - Ice Giant

Semi-Major Axis: 12.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 414.7

Radius: 4.3

Gravity: 22.43 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 12.79 AU - 12.85 AU

Year: 17385 Days

Day: 22.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 10.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 73,537,658 km

• M1: 53,406 km (0.083 R)
• M2: 803,939 km (0.066 R)
• M3: 1,047,783 km (0.051 R)
• M4: 1,258,417 km (0.091 R)
• M5: 1,936,993 km (0.118 R)
• M6: 2,177,696 km (0.096 R)
• M7: 2,437,847 km (0.073 R)
• M8: 4,486,739 km (0.106 R)
• M9: 5,215,131 km (0.104 R)
• M10: 9,483,308 km (0.083 R)
• M11: 10,340,055 km (0.051 R)
• M12: 17,356,794 km (0.11 R)
• M13: 19,463,431 km (0.071 R)
• M14: 19,887,242 km (0.095 R)
• M15: 20,929,341 km (0.114 R)
• M16: 27,318,815 km (0.078 R)
• M17: 31,297,520 km (0.084 R)
• M18: 32,231,310 km (0.111 R)
• M19: 33,063,523 km (0.062 R)
• M20: 35,898,403 km (0.062 R)
• M21: 36,535,540 km (0.082 R)
• M22: 36,792,400 km (0.105 R)

Planet 10 - Ice Giant

Semi-Major Axis: 17.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 319

Radius: 6.5

Gravity: 7.55 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 17.16 AU - 17.94 AU

Year: 27846 Days

Day: 17.8 Hours

Environment

Temp: -202 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 73,537,658 km

• M1: 80,932 km (0.093 R)
• M2: 677,379 km (0.098 R)
• M3: 1,799,214 km (0.117 R)
• M4: 2,248,007 km (0.117 R)
• M5: 4,677,028 km (0.04 R)
• M6: 6,553,883 km (0.111 R)
• M7: 8,670,094 km (0.045 R)
• M8: 19,246,963 km (0.108 R)
• M9: 29,847,318 km (0.111 R)
• M10: 30,946,713 km (0.032 R)
• M11: 32,072,736 km (0.088 R)
• M12: 33,485,838 km (0.117 R)
• M13: 37,690,735 km (0.11 R)
• M14: 38,257,711 km (0.06 R)
• M15: 48,786,708 km (0.065 R)
• M16: 52,743,272 km (0.089 R)
• M17: 58,407,197 km (0.102 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 509 - 20,423 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit