🌌 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: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.56 AU - 0.74 AU

Year: 338 Days

Day: 38.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 12.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 33,788,853 km

• M1: 221,255 km (0.107 R)
• M2: 486,941 km (0.113 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624.6

Radius: 8

Gravity: 9.76 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.8 AU - 0.94 AU

Year: 524 Days

Day: 9 Hours

Environment

Temp: -154 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 33,788,853 km

• M1: 99,782 km (0.104 R)
• M2: 381,325 km (0.068 R)
• M3: 649,105 km (0.112 R)
• M4: 1,042,847 km (0.083 R)
• M5: 1,337,106 km (0.043 R)
• M6: 1,701,975 km (0.106 R)
• M7: 2,001,171 km (0.072 R)
• M8: 2,471,656 km (0.107 R)
• M9: 2,824,857 km (0.118 R)
• M10: 3,140,807 km (0.086 R)
• M11: 3,505,377 km (0.073 R)
• M12: 3,884,458 km (0.11 R)
• M13: 4,992,979 km (0.097 R)
• M14: 5,840,750 km (0.105 R)
• M15: 6,149,819 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.9

Radius: 13

Gravity: 2.02 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.01 AU - 1.39 AU

Year: 849 Days

Day: 5.3 Hours

Environment

Temp: -171 °C

Axial Tilt: 44.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 33,788,853 km

• M1: 161,715 km (0.095 R)
• M2: 611,107 km (0.095 R)
• M3: 1,016,966 km (0.084 R)
• M4: 1,651,710 km (0.081 R)
• M5: 2,189,066 km (0.085 R)
• M6: 3,155,169 km (0.078 R)
• M7: 3,609,198 km (0.063 R)
• M8: 4,035,103 km (0.039 R)
• M9: 5,190,448 km (0.048 R)
• M10: 5,753,983 km (0.107 R)
• M11: 7,066,854 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 961.7

Radius: 13.1

Gravity: 5.6 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.16 AU - 1.28 AU

Year: 870 Days

Day: 13.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 33,788,853 km

• M1: 166,203 km (0.063 R)
• M2: 577,897 km (0.119 R)
• M3: 1,016,966 km (0.096 R)
• M4: 1,596,658 km (0.114 R)
• M5: 2,044,255 km (0.084 R)
• M6: 2,623,797 km (0.107 R)
• M7: 3,173,120 km (0.056 R)
• M8: 4,918,329 km (0.065 R)
• M9: 5,337,054 km (0.07 R)
• M10: 5,904,778 km (0.078 R)
• M11: 6,512,444 km (0.114 R)
• M12: 6,995,346 km (0.06 R)
• M13: 8,085,316 km (0.088 R)
• M14: 9,632,607 km (0.119 R)
• M15: 10,445,522 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 676.4

Radius: 11.2

Gravity: 5.39 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.1 AU - 1.36 AU

Year: 881 Days

Day: 10.8 Hours

Environment

Temp: -178 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 33,788,853 km

• M1: 139,276 km (0.097 R)
• M2: 634,145 km (0.047 R)
• M3: 1,124,527 km (0.119 R)
• M4: 1,486,404 km (0.099 R)
• M5: 1,845,290 km (0.116 R)
• M6: 2,368,733 km (0.09 R)
• M7: 2,989,713 km (0.102 R)
• M8: 3,805,770 km (0.113 R)
• M9: 4,456,072 km (0.079 R)
• M10: 5,443,268 km (0.107 R)
• M11: 7,749,020 km (0.096 R)
• M12: 8,557,447 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 241.5

Radius: 8.1

Gravity: 3.68 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.21 AU - 1.41 AU

Year: 968 Days

Day: 11.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,788,853 km

• M1: 100,679 km (0.068 R)
• M2: 511,924 km (0.057 R)
• M3: 840,890 km (0.079 R)
• M4: 1,575,864 km (0.109 R)
• M5: 2,294,383 km (0.091 R)
• M6: 4,010,121 km (0.105 R)
• M7: 5,335,109 km (0.041 R)
• M8: 6,192,753 km (0.11 R)
• M9: 6,664,735 km (0.106 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754.1

Radius: 13.3

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.37 AU - 1.47 AU

Year: 1093 Days

Day: 11.3 Hours

Environment

Temp: -173 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 33,788,853 km

• M1: 165,455 km (0.044 R)
• M2: 694,134 km (0.081 R)
• M3: 1,286,093 km (0.096 R)
• M4: 1,969,606 km (0.102 R)
• M5: 2,621,403 km (0.091 R)
• M6: 3,156,216 km (0.113 R)
• M7: 3,811,006 km (0.114 R)
• M8: 4,718,766 km (0.072 R)
• M9: 5,273,774 km (0.102 R)
• M10: 6,044,951 km (0.07 R)
• M11: 6,561,512 km (0.099 R)
• M12: 7,058,776 km (0.077 R)
• M13: 7,735,108 km (0.092 R)
• M14: 8,290,714 km (0.093 R)
• M15: 9,423,020 km (0.096 R)
• M16: 9,873,310 km (0.069 R)
• M17: 10,400,942 km (0.046 R)
• M18: 11,277,884 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 69.7

Radius: 8.9

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 1.15 AU - 1.87 AU

Year: 1198 Days

Day: 8.5 Hours

Environment

Temp: -179 °C

Axial Tilt: 45.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 33,788,853 km

• M1: 110,702 km (0.086 R)
• M2: 605,871 km (0.077 R)
• M3: 1,102,536 km (0.061 R)
• M4: 1,520,363 km (0.101 R)
• M5: 1,938,040 km (0.088 R)
• M6: 3,037,435 km (0.059 R)
• M7: 4,112,296 km (0.075 R)
• M8: 5,094,406 km (0.07 R)

Planet 9 - Gas Giant

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 919.1

Radius: 8.9

Gravity: 11.6 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.28 AU - 3.62 AU

Year: 3272 Days

Day: 14.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 5.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 33,788,853 km

• M1: 110,702 km (0.079 R)
• M2: 862,432 km (0.062 R)
• M3: 1,276,668 km (0.062 R)
• M4: 1,935,796 km (0.048 R)
• M5: 2,342,703 km (0.066 R)
• M6: 3,291,004 km (0.076 R)
• M7: 4,156,128 km (0.097 R)
• M8: 4,911,298 km (0.081 R)
• M9: 6,241,074 km (0.054 R)
• M10: 7,968,480 km (0.092 R)
• M11: 9,283,595 km (0.095 R)
• M12: 10,865,742 km (0.074 R)
• M13: 12,385,058 km (0.077 R)
• M14: 15,242,228 km (0.113 R)
• M15: 18,511,390 km (0.091 R)
• M16: 19,825,159 km (0.112 R)
• M17: 24,358,722 km (0.069 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.53 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 206.7

Radius: 7.2

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 6.39 AU - 6.67 AU

Year: 10774 Days

Day: 16.5 Hours

Environment

Temp: -219 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 33,788,853 km

• M1: 96,042 km (0.088 R)
• M2: 813,513 km (0.109 R)
• M3: 1,289,683 km (0.03 R)
• M4: 2,150,619 km (0.03 R)
• M5: 2,498,135 km (0.094 R)
• M6: 3,242,983 km (0.114 R)
• M7: 4,176,773 km (0.113 R)
• M8: 5,425,466 km (0.098 R)
• M9: 10,873,820 km (0.11 R)
• M10: 13,253,025 km (0.069 R)
• M11: 15,058,671 km (0.111 R)
• M12: 18,874,913 km (0.079 R)
• M13: 19,920,901 km (0.115 R)
• M14: 21,749,286 km (0.081 R)
• M15: 22,898,497 km (0.1 R)
• M16: 25,234,019 km (0.041 R)
• M17: 26,760,965 km (0.099 R)
• M18: 31,323,999 km (0.054 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 481 - 13,868 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit