🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.43

Radius: 0.71

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.53 AU - 0.63 AU

Year: 199 Days

Day: 13.7 Hours

Environment

Temp: 17 °C

Axial Tilt: 3.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.53 AU - 0.89 AU

Year: 269 Days

Day: 13.9 Hours

Environment

Temp: -42 °C

Axial Tilt: 22 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.24

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.75 AU - 1.03 AU

Year: 377 Days

Day: 19.6 Hours

Environment

Temp: -65 °C

Axial Tilt: 4.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 39,199,605 km

• M1: 41,588 km (0.045 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.8 AU - 2.44 AU

Year: 1388 Days

Day: 24.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 24.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 3.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 367

Radius: 9.9

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 3.76 AU - 3.82 AU

Year: 3317 Days

Day: 5.5 Hours

Environment

Temp: -165 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 39,199,605 km

• M1: 123,119 km (0.034 R)
• M2: 452,683 km (0.093 R)
• M3: 807,380 km (0.061 R)
• M4: 1,247,945 km (0.109 R)
• M5: 1,606,831 km (0.111 R)
• M6: 1,950,607 km (0.062 R)
• M7: 2,343,750 km (0.086 R)
• M8: 3,206,481 km (0.105 R)
• M9: 3,948,636 km (0.096 R)
• M10: 4,757,063 km (0.071 R)
• M11: 5,822,798 km (0.082 R)
• M12: 7,069,247 km (0.106 R)
• M13: 8,387,504 km (0.119 R)
• M14: 9,540,754 km (0.052 R)
• M15: 10,341,402 km (0.079 R)
• M16: 13,232,081 km (0.092 R)
• M17: 13,543,394 km (0.119 R)
• M18: 14,042,752 km (0.097 R)
• M19: 14,460,280 km (0.1 R)
• M20: 15,515,992 km (0.072 R)
• M21: 17,888,165 km (0.064 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 490.5

Radius: 10.6

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 5.3 AU - 5.92 AU

Year: 5974 Days

Day: 9.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 39,199,605 km

• M1: 131,796 km (0.071 R)
• M2: 529,876 km (0.043 R)
• M3: 893,698 km (0.063 R)
• M4: 1,375,403 km (0.1 R)
• M5: 2,800,622 km (0.075 R)
• M6: 3,502,236 km (0.069 R)
• M7: 4,196,669 km (0.084 R)
• M8: 4,927,305 km (0.109 R)
• M9: 5,919,588 km (0.071 R)
• M10: 6,447,219 km (0.093 R)
• M11: 7,923,152 km (0.092 R)
• M12: 8,838,841 km (0.029 R)
• M13: 10,475,441 km (0.092 R)
• M14: 11,109,437 km (0.112 R)
• M15: 11,530,405 km (0.1 R)
• M16: 12,206,438 km (0.1 R)
• M17: 18,275,325 km (0.101 R)
• M18: 19,261,175 km (0.029 R)
• M19: 20,212,916 km (0.118 R)
• M20: 20,982,448 km (0.11 R)
• M21: 22,136,595 km (0.109 R)
• M22: 22,804,101 km (0.08 R)
• M23: 26,759,618 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 518.4

Radius: 12.4

Gravity: 3.37 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 6.08 AU - 8.08 AU

Year: 8470 Days

Day: 10.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 39,199,605 km

• M1: 161,416 km (0.025 R)
• M2: 762,800 km (0.115 R)
• M3: 1,579,454 km (0.116 R)
• M4: 2,079,410 km (0.101 R)
• M5: 2,591,185 km (0.083 R)
• M6: 3,404,548 km (0.08 R)
• M7: 3,995,011 km (0.103 R)
• M8: 5,230,091 km (0.098 R)
• M9: 6,355,516 km (0.114 R)
• M10: 7,405,244 km (0.118 R)
• M11: 10,412,161 km (0.058 R)
• M12: 11,149,380 km (0.107 R)
• M13: 11,763,778 km (0.117 R)
• M14: 13,859,944 km (0.12 R)
• M15: 14,331,177 km (0.065 R)
• M16: 15,305,657 km (0.109 R)
• M17: 17,659,729 km (0.089 R)
• M18: 18,637,202 km (0.11 R)
• M19: 20,547,716 km (0.055 R)
• M20: 23,487,165 km (0.095 R)
• M21: 23,904,842 km (0.078 R)
• M22: 25,537,254 km (0.073 R)
• M23: 26,157,188 km (0.09 R)
• M24: 27,890,129 km (0.068 R)
• M25: 30,088,919 km (0.114 R)
• M26: 32,504,027 km (0.1 R)
• M27: 35,591,428 km (0.041 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 77.7

Radius: 9.9

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 6.27 AU - 10.11 AU

Year: 10538 Days

Day: 10.1 Hours

Environment

Temp: -201 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 39,199,605 km

• M1: 124,765 km (0.117 R)
• M2: 548,127 km (0.094 R)
• M3: 1,758,673 km (0.107 R)
• M4: 2,465,074 km (0.103 R)
• M5: 2,816,629 km (0.102 R)
• M6: 4,835,602 km (0.041 R)
• M7: 5,765,203 km (0.113 R)
• M8: 6,567,347 km (0.118 R)
• M9: 7,672,576 km (0.068 R)
• M10: 13,303,140 km (0.054 R)
• M11: 14,648,474 km (0.089 R)
• M12: 14,959,338 km (0.103 R)
• M13: 17,491,282 km (0.039 R)
• M14: 18,136,647 km (0.063 R)
• M15: 22,967,761 km (0.095 R)
• M16: 23,670,572 km (0.115 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 408.3

Radius: 7.9

Gravity: 6.54 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 8.15 AU - 13.41 AU

Year: 15913 Days

Day: 18.7 Hours

Environment

Temp: -210 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,199,605 km

• M1: 153,188 km (0.102 R)
• M2: 543,938 km (0.107 R)
• M3: 1,062,893 km (0.092 R)
• M4: 2,723,429 km (0.115 R)
• M5: 5,166,662 km (0.106 R)
• M6: 7,638,766 km (0.11 R)
• M7: 8,549,967 km (0.057 R)
• M8: 9,229,740 km (0.103 R)
• M9: 14,621,247 km (0.108 R)
• M10: 17,585,080 km (0.112 R)
• M11: 22,792,732 km (0.071 R)
• M12: 24,477,652 km (0.052 R)
• M13: 31,594,173 km (0.102 R)
• M14: 35,007,996 km (0.099 R)
• M15: 36,115,469 km (0.119 R)
• M16: 36,615,126 km (0.077 R)
• M17: 53,030,650 km (0.089 R)

Planet 10 - Ice Giant

Semi-Major Axis: 11.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 123.8

Radius: 6.1

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 10.81 AU - 12.07 AU

Year: 17396 Days

Day: 24.2 Hours

Environment

Temp: -198 °C

Axial Tilt: 135.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,199,605 km

• M1: 77,342 km (0.062 R)
• M2: 475,572 km (0.074 R)
• M3: 1,241,363 km (0.073 R)
• M4: 3,230,117 km (0.104 R)
• M5: 4,484,196 km (0.1 R)
• M6: 9,310,223 km (0.079 R)
• M7: 26,195,934 km (0.081 R)
• M8: 29,655,683 km (0.074 R)
• M9: 31,545,254 km (0.084 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 550 - 20,330 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit