🌌 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: 3.89

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.48 AU - 0.58 AU

Year: 249 Days

Day: 18.8 Hours

Environment

Temp: -110 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.61

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.52 AU - 0.62 AU

Year: 278 Days

Day: 38.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 12.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.79

Radius: 1.26

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.63 AU - 0.67 AU

Year: 338 Days

Day: 19.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 24 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.7

Radius: 10.1

Gravity: 4.48 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.6 AU - 0.9 AU

Year: 419 Days

Day: 7.7 Hours

Environment

Temp: -151 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 79,058,796 km

• M1: 125,662 km (0.095 R)
• M2: 1,132,755 km (0.056 R)
• M3: 1,472,941 km (0.075 R)
• M4: 1,874,910 km (0.114 R)
• M5: 2,473,601 km (0.069 R)
• M6: 2,923,591 km (0.119 R)
• M7: 3,926,346 km (0.113 R)
• M8: 5,039,803 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 707.2

Radius: 14.5

Gravity: 3.36 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.97 AU - 1.11 AU

Year: 685 Days

Day: 5.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 79,058,796 km

• M1: 180,415 km (0.097 R)
• M2: 707,000 km (0.12 R)
• M3: 1,225,955 km (0.067 R)
• M4: 1,727,257 km (0.108 R)
• M5: 2,181,735 km (0.116 R)
• M6: 3,341,418 km (0.115 R)
• M7: 4,456,670 km (0.119 R)
• M8: 4,913,243 km (0.113 R)
• M9: 5,383,279 km (0.07 R)
• M10: 5,845,387 km (0.12 R)
• M11: 6,314,077 km (0.12 R)
• M12: 7,920,160 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.7

Radius: 10.6

Gravity: 8.64 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 3.17 AU - 3.59 AU

Year: 4012 Days

Day: 14.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 79,058,796 km

• M1: 135,984 km (0.106 R)
• M2: 472,879 km (0.113 R)
• M3: 1,043,146 km (0.115 R)
• M4: 1,584,840 km (0.063 R)
• M5: 2,156,005 km (0.094 R)
• M6: 2,498,883 km (0.114 R)
• M7: 3,178,356 km (0.09 R)
• M8: 4,399,225 km (0.099 R)
• M9: 5,279,608 km (0.062 R)
• M10: 7,422,298 km (0.12 R)
• M11: 7,775,050 km (0.076 R)
• M12: 8,783,639 km (0.064 R)
• M13: 13,339,193 km (0.092 R)
• M14: 14,561,707 km (0.077 R)
• M15: 15,626,694 km (0.054 R)
• M16: 16,682,855 km (0.108 R)
• M17: 17,598,694 km (0.103 R)
• M18: 18,871,622 km (0.095 R)
• M19: 21,599,988 km (0.112 R)
• M20: 22,540,659 km (0.029 R)
• M21: 23,132,917 km (0.045 R)
• M22: 24,117,421 km (0.043 R)
• M23: 24,737,055 km (0.12 R)
• M24: 26,659,837 km (0.116 R)
• M25: 27,573,580 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 440.6

Radius: 8.7

Gravity: 5.82 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 3.01 AU - 4.09 AU

Year: 4319 Days

Day: 7.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 79,058,796 km

• M1: 108,758 km (0.053 R)
• M2: 390,750 km (0.114 R)
• M3: 850,763 km (0.116 R)
• M4: 1,359,097 km (0.117 R)
• M5: 1,730,099 km (0.105 R)
• M6: 2,354,222 km (0.09 R)
• M7: 2,743,326 km (0.084 R)
• M8: 3,266,619 km (0.114 R)
• M9: 3,691,477 km (0.089 R)
• M10: 4,375,139 km (0.109 R)
• M11: 4,771,274 km (0.099 R)
• M12: 5,397,192 km (0.081 R)
• M13: 6,048,541 km (0.036 R)
• M14: 6,335,021 km (0.053 R)
• M15: 7,771,759 km (0.106 R)
• M16: 10,520,021 km (0.095 R)
• M17: 13,808,332 km (0.091 R)
• M18: 14,765,011 km (0.089 R)
• M19: 15,819,077 km (0.103 R)
• M20: 16,199,505 km (0.084 R)
• M21: 17,435,333 km (0.105 R)
• M22: 18,853,969 km (0.095 R)
• M23: 21,519,205 km (0.033 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 888.3

Radius: 3.2

Gravity: 86.75 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 6.9 AU - 7.16 AU

Year: 12035 Days

Day: 20.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 79,058,796 km

• M1: 46,675 km (0.067 R)
• M2: 231,428 km (0.112 R)
• M3: 749,485 km (0.101 R)
• M4: 1,152,203 km (0.061 R)
• M5: 1,282,353 km (0.105 R)
• M6: 1,588,131 km (0.091 R)
• M7: 1,904,680 km (0.088 R)
• M8: 2,403,888 km (0.103 R)
• M9: 2,573,831 km (0.113 R)
• M10: 3,009,311 km (0.104 R)
• M11: 3,257,194 km (0.033 R)
• M12: 4,938,226 km (0.104 R)
• M13: 5,606,928 km (0.118 R)
• M14: 7,121,457 km (0.079 R)
• M15: 7,339,122 km (0.102 R)
• M16: 7,651,333 km (0.043 R)
• M17: 8,591,855 km (0.093 R)
• M18: 8,788,875 km (0.082 R)
• M19: 12,239,799 km (0.065 R)
• M20: 12,933,783 km (0.056 R)
• M21: 13,192,438 km (0.086 R)
• M22: 14,262,063 km (0.071 R)
• M23: 14,817,819 km (0.115 R)
• M24: 20,749,075 km (0.071 R)
• M25: 22,191,199 km (0.116 R)
• M26: 22,936,794 km (0.111 R)
• M27: 25,475,171 km (0.12 R)
• M28: 27,978,691 km (0.032 R)
• M29: 28,411,179 km (0.093 R)
• M30: 30,299,553 km (0.09 R)
• M31: 33,955,425 km (0.062 R)
• M32: 35,952,407 km (0.112 R)
• M33: 39,768,948 km (0.093 R)
• M34: 43,846,687 km (0.049 R)
• M35: 44,576,725 km (0.079 R)
• M36: 45,761,689 km (0.109 R)
• M37: 46,967,448 km (0.12 R)
• M38: 57,385,594 km (0.118 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 657.3

Radius: 4.6

Gravity: 31.06 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 8.62 AU - 12.16 AU

Year: 21624 Days

Day: 22.1 Hours

Environment

Temp: -222 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 79,058,796 km

• M1: 57,894 km (0.068 R)
• M2: 345,721 km (0.117 R)
• M3: 517,908 km (0.036 R)
• M4: 1,056,460 km (0.039 R)
• M5: 1,647,073 km (0.087 R)
• M6: 2,254,889 km (0.077 R)
• M7: 3,189,726 km (0.107 R)
• M8: 4,190,087 km (0.091 R)
• M9: 4,565,577 km (0.108 R)
• M10: 6,695,552 km (0.101 R)
• M11: 7,113,229 km (0.119 R)
• M12: 7,847,605 km (0.063 R)
• M13: 8,155,178 km (0.098 R)
• M14: 8,739,657 km (0.09 R)
• M15: 10,536,776 km (0.103 R)
• M16: 11,620,164 km (0.03 R)
• M17: 12,019,591 km (0.117 R)
• M18: 12,290,961 km (0.052 R)
• M19: 13,783,050 km (0.078 R)
• M20: 14,610,925 km (0.082 R)
• M21: 15,154,713 km (0.09 R)
• M22: 16,531,313 km (0.097 R)
• M23: 21,256,212 km (0.09 R)
• M24: 21,453,980 km (0.112 R)
• M25: 27,504,616 km (0.039 R)
• M26: 31,298,119 km (0.096 R)
• M27: 33,120,071 km (0.12 R)
• M28: 44,096,067 km (0.098 R)
• M29: 44,417,852 km (0.086 R)
• M30: 44,741,282 km (0.086 R)
• M31: 49,956,863 km (0.1 R)
• M32: 50,482,101 km (0.054 R)
• M33: 52,982,031 km (0.066 R)
• M34: 54,817,447 km (0.054 R)
• M35: 55,003,248 km (0.05 R)
• M36: 55,938,833 km (0.109 R)
• M37: 65,674,662 km (0.119 R)
• M38: 73,506,111 km (0.056 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 422 - 17,990 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit