🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.94

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.46 AU - 0.6 AU

Year: 253 Days

Day: 43.2 Hours

Environment

Temp: -110 °C

Axial Tilt: 27 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 608.5

Radius: 10.5

Gravity: 5.52 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.59 AU - 0.91 AU

Year: 426 Days

Day: 14.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 47,052,139 km

• M1: 130,599 km (0.099 R)
• M2: 484,548 km (0.042 R)
• M3: 829,371 km (0.086 R)
• M4: 1,322,445 km (0.095 R)
• M5: 1,738,028 km (0.066 R)
• M6: 2,079,111 km (0.106 R)
• M7: 2,428,422 km (0.079 R)
• M8: 2,776,387 km (0.11 R)
• M9: 3,270,060 km (0.096 R)
• M10: 3,721,247 km (0.112 R)
• M11: 4,106,611 km (0.037 R)
• M12: 4,764,094 km (0.093 R)
• M13: 5,203,912 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 305.7

Radius: 8.7

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.68 AU - 1.08 AU

Year: 542 Days

Day: 6.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 125.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 47,052,139 km

• M1: 108,758 km (0.048 R)
• M2: 408,103 km (0.074 R)
• M3: 971,937 km (0.106 R)
• M4: 1,285,195 km (0.085 R)
• M5: 1,892,263 km (0.107 R)
• M6: 2,163,784 km (0.093 R)
• M7: 2,498,434 km (0.111 R)
• M8: 2,857,319 km (0.058 R)
• M9: 3,239,542 km (0.08 R)
• M10: 3,864,113 km (0.067 R)
• M11: 4,373,195 km (0.1 R)
• M12: 4,794,761 km (0.074 R)
• M13: 5,151,253 km (0.096 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 371.7

Radius: 9.1

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.86 AU - 1.02 AU

Year: 598 Days

Day: 14.2 Hours

Environment

Temp: -152 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 47,052,139 km

• M1: 113,246 km (0.059 R)
• M2: 415,134 km (0.086 R)
• M3: 928,255 km (0.076 R)
• M4: 1,287,290 km (0.096 R)
• M5: 1,572,573 km (0.107 R)
• M6: 2,006,407 km (0.116 R)
• M7: 2,375,913 km (0.118 R)
• M8: 2,864,201 km (0.067 R)
• M9: 3,161,153 km (0.114 R)
• M10: 4,096,139 km (0.12 R)
• M11: 5,769,092 km (0.066 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 272

Radius: 11.1

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.92 AU - 0.98 AU

Year: 607 Days

Day: 8.7 Hours

Environment

Temp: -157 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 47,052,139 km

• M1: 138,079 km (0.071 R)
• M2: 503,696 km (0.062 R)
• M3: 1,244,505 km (0.115 R)
• M4: 2,210,608 km (0.114 R)
• M5: 2,569,792 km (0.102 R)
• M6: 3,536,494 km (0.12 R)
• M7: 4,672,989 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 232.3

Radius: 13.4

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.83 AU - 2.23 AU

Year: 1897 Days

Day: 9.8 Hours

Environment

Temp: -197 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 47,052,139 km

• M1: 166,951 km (0.064 R)
• M2: 590,164 km (0.082 R)
• M3: 1,067,680 km (0.104 R)
• M4: 1,517,371 km (0.062 R)
• M5: 2,562,013 km (0.064 R)
• M6: 3,645,401 km (0.087 R)
• M7: 4,073,700 km (0.107 R)
• M8: 5,014,221 km (0.098 R)
• M9: 5,669,909 km (0.044 R)
• M10: 6,094,767 km (0.094 R)
• M11: 7,778,491 km (0.112 R)
• M12: 8,798,000 km (0.11 R)
• M13: 9,282,249 km (0.065 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 82.5

Radius: 10.7

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 2.71 AU - 2.87 AU

Year: 3057 Days

Day: 9.1 Hours

Environment

Temp: -206 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,052,139 km

• M1: 134,788 km (0.062 R)
• M2: 595,848 km (0.073 R)
• M3: 1,491,341 km (0.072 R)
• M4: 2,300,965 km (0.101 R)
• M5: 2,637,111 km (0.061 R)
• M6: 3,073,638 km (0.093 R)
• M7: 3,603,214 km (0.098 R)
• M8: 3,978,555 km (0.107 R)
• M9: 4,827,074 km (0.085 R)
• M10: 5,383,728 km (0.118 R)
• M11: 5,813,074 km (0.112 R)
• M12: 7,071,192 km (0.109 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.7

Radius: 8.5

Gravity: 10.28 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 3.11 AU - 4.19 AU

Year: 4575 Days

Day: 11.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 47,052,139 km

• M1: 106,214 km (0.104 R)
• M2: 450,888 km (0.109 R)
• M3: 808,876 km (0.066 R)
• M4: 1,181,374 km (0.051 R)
• M5: 1,605,335 km (0.114 R)
• M6: 2,040,814 km (0.089 R)
• M7: 2,795,685 km (0.056 R)
• M8: 3,327,206 km (0.077 R)
• M9: 3,901,961 km (0.036 R)
• M10: 5,112,507 km (0.091 R)
• M11: 5,848,230 km (0.059 R)
• M12: 7,354,830 km (0.101 R)
• M13: 7,813,646 km (0.114 R)
• M14: 8,254,063 km (0.115 R)
• M15: 9,024,641 km (0.045 R)
• M16: 10,753,245 km (0.111 R)
• M17: 11,624,951 km (0.079 R)
• M18: 12,199,108 km (0.093 R)
• M19: 16,641,417 km (0.088 R)
• M20: 17,931,848 km (0.115 R)
• M21: 18,312,425 km (0.043 R)
• M22: 18,958,837 km (0.027 R)
• M23: 22,129,265 km (0.112 R)
• M24: 22,714,641 km (0.098 R)
• M25: 23,611,930 km (0.066 R)
• M26: 24,223,037 km (0.074 R)
• M27: 28,800,432 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 555.9

Radius: 6

Gravity: 15.44 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 5.85 AU - 7.09 AU

Year: 10796 Days

Day: 21.7 Hours

Environment

Temp: -217 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 47,052,139 km

• M1: 74,799 km (0.072 R)
• M2: 330,761 km (0.066 R)
• M3: 568,023 km (0.1 R)
• M4: 835,355 km (0.081 R)
• M5: 1,355,806 km (0.096 R)
• M6: 1,824,944 km (0.069 R)
• M7: 2,037,373 km (0.065 R)
• M8: 2,713,855 km (0.101 R)
• M9: 2,926,134 km (0.109 R)
• M10: 3,336,033 km (0.073 R)
• M11: 6,604,148 km (0.059 R)
• M12: 7,147,936 km (0.098 R)
• M13: 7,554,393 km (0.105 R)
• M14: 7,890,540 km (0.062 R)
• M15: 8,457,964 km (0.118 R)
• M16: 9,970,249 km (0.111 R)
• M17: 10,685,327 km (0.112 R)
• M18: 11,379,312 km (0.065 R)
• M19: 13,095,199 km (0.057 R)
• M20: 14,140,589 km (0.076 R)
• M21: 14,330,578 km (0.082 R)
• M22: 14,780,718 km (0.037 R)
• M23: 15,042,215 km (0.112 R)
• M24: 17,608,866 km (0.029 R)
• M25: 18,957,042 km (0.088 R)
• M26: 21,023,886 km (0.036 R)
• M27: 22,539,762 km (0.119 R)
• M28: 23,501,227 km (0.06 R)
• M29: 28,317,979 km (0.06 R)
• M30: 29,231,274 km (0.085 R)
• M31: 39,593,620 km (0.103 R)
• M32: 41,637,276 km (0.099 R)
• M33: 44,560,718 km (0.099 R)
• M34: 45,518,892 km (0.096 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: 183 - 10,471 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit