🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.54

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.39 AU - 0.63 AU

Year: 235 Days

Day: 41 Hours

Environment

Temp: -108 °C

Axial Tilt: 8.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.41 AU - 0.65 AU

Year: 249 Days

Day: 47.2 Hours

Environment

Temp: -115 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 113.5

Radius: 11.1

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.69 AU - 0.81 AU

Year: 419 Days

Day: 9.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 59,991,911 km

• M1: 138,079 km (0.118 R)
• M2: 497,862 km (0.103 R)
• M3: 905,366 km (0.1 R)
• M4: 1,580,651 km (0.084 R)
• M5: 2,245,165 km (0.116 R)
• M6: 2,744,373 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 699.9

Radius: 13.9

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.76 AU - 1.08 AU

Year: 570 Days

Day: 9.2 Hours

Environment

Temp: -145 °C

Axial Tilt: 13.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 59,991,911 km

• M1: 172,935 km (0.052 R)
• M2: 700,866 km (0.07 R)
• M3: 1,541,008 km (0.059 R)
• M4: 2,233,496 km (0.112 R)
• M5: 3,104,006 km (0.114 R)
• M6: 3,838,981 km (0.109 R)
• M7: 4,671,942 km (0.086 R)
• M8: 5,464,212 km (0.062 R)
• M9: 6,539,372 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.7

Radius: 14.5

Gravity: 2.55 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 1.49 AU - 2.35 AU

Year: 1718 Days

Day: 10.2 Hours

Environment

Temp: -198 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 59,991,911 km

• M1: 180,265 km (0.103 R)
• M2: 723,754 km (0.101 R)
• M3: 1,236,127 km (0.1 R)
• M4: 1,754,933 km (0.08 R)
• M5: 2,312,633 km (0.053 R)
• M6: 2,876,318 km (0.095 R)
• M7: 3,374,180 km (0.074 R)
• M8: 4,016,703 km (0.053 R)
• M9: 4,642,620 km (0.098 R)
• M10: 5,440,426 km (0.078 R)
• M11: 7,231,262 km (0.097 R)
• M12: 8,391,992 km (0.104 R)
• M13: 9,139,832 km (0.118 R)
• M14: 10,803,659 km (0.083 R)
• M15: 11,472,511 km (0.114 R)
• M16: 12,815,900 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 966.3

Radius: 12.9

Gravity: 5.81 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.92 AU - 2.58 AU

Year: 2179 Days

Day: 10.5 Hours

Environment

Temp: -197 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 59,991,911 km

• M1: 160,668 km (0.058 R)
• M2: 612,005 km (0.074 R)
• M3: 1,038,808 km (0.115 R)
• M4: 1,663,528 km (0.118 R)
• M5: 2,164,831 km (0.116 R)
• M6: 2,906,537 km (0.115 R)
• M7: 3,320,325 km (0.108 R)
• M8: 4,330,709 km (0.118 R)
• M9: 5,685,766 km (0.105 R)
• M10: 6,338,761 km (0.081 R)
• M11: 7,578,778 km (0.081 R)
• M12: 8,736,366 km (0.12 R)
• M13: 9,322,491 km (0.113 R)
• M14: 9,971,446 km (0.114 R)
• M15: 13,407,260 km (0.095 R)
• M16: 14,661,489 km (0.085 R)
• M17: 15,145,288 km (0.05 R)
• M18: 15,941,598 km (0.028 R)
• M19: 17,241,753 km (0.081 R)
• M20: 18,498,973 km (0.106 R)
• M21: 18,950,460 km (0.082 R)
• M22: 19,409,127 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 977.6

Radius: 3.5

Gravity: 79.8 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 6.96 AU - 11.2 AU

Year: 17666 Days

Day: 22.6 Hours

Environment

Temp: -232 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 59,991,911 km

• M1: 52,808 km (0.117 R)
• M2: 190,139 km (0.064 R)
• M3: 325,824 km (0.083 R)
• M4: 610,210 km (0.097 R)
• M5: 871,408 km (0.092 R)
• M6: 1,629,719 km (0.044 R)
• M7: 2,626,340 km (0.086 R)
• M8: 3,006,917 km (0.055 R)
• M9: 3,599,774 km (0.094 R)
• M10: 5,050,424 km (0.09 R)
• M11: 5,555,915 km (0.054 R)
• M12: 6,223,421 km (0.041 R)
• M13: 7,715,660 km (0.084 R)
• M14: 11,514,548 km (0.094 R)
• M15: 12,524,184 km (0.108 R)
• M16: 12,733,023 km (0.098 R)
• M17: 15,028,303 km (0.111 R)
• M18: 15,662,448 km (0.113 R)
• M19: 15,823,715 km (0.052 R)
• M20: 18,111,216 km (0.055 R)
• M21: 20,321,225 km (0.117 R)
• M22: 21,789,977 km (0.075 R)
• M23: 25,712,732 km (0.116 R)
• M24: 26,504,255 km (0.045 R)
• M25: 28,493,757 km (0.087 R)
• M26: 29,463,600 km (0.054 R)
• M27: 30,205,306 km (0.087 R)
• M28: 30,330,071 km (0.098 R)
• M29: 33,163,604 km (0.108 R)
• M30: 43,662,532 km (0.095 R)
• M31: 47,769,891 km (0.077 R)
• M32: 49,136,617 km (0.113 R)
• M33: 61,021,719 km (0.112 R)
• M34: 65,720,888 km (0.108 R)
• M35: 65,930,474 km (0.116 R)
• M36: 72,651,608 km (0.116 R)
• M37: 72,875,705 km (0.115 R)
• M38: 78,158,156 km (0.113 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 318.3

Radius: 7.3

Gravity: 5.97 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 8.76 AU - 11.32 AU

Year: 20541 Days

Day: 24.7 Hours

Environment

Temp: -240 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 59,991,911 km

• M1: 90,956 km (0.109 R)
• M2: 359,932 km (0.106 R)
• M3: 720,015 km (0.115 R)
• M4: 1,243,757 km (0.072 R)
• M5: 1,477,429 km (0.088 R)
• M6: 2,342,852 km (0.078 R)
• M7: 2,572,036 km (0.117 R)
• M8: 2,956,054 km (0.061 R)
• M9: 4,099,580 km (0.104 R)
• M10: 6,674,010 km (0.109 R)
• M11: 7,805,269 km (0.118 R)
• M12: 8,272,762 km (0.1 R)
• M13: 8,513,316 km (0.081 R)
• M14: 9,263,399 km (0.025 R)
• M15: 9,575,610 km (0.093 R)
• M16: 13,094,302 km (0.096 R)
• M17: 14,160,635 km (0.1 R)
• M18: 18,595,165 km (0.108 R)
• M19: 20,286,668 km (0.107 R)
• M20: 30,645,273 km (0.118 R)
• M21: 32,997,700 km (0.069 R)
• M22: 35,848,587 km (0.033 R)
• M23: 38,457,723 km (0.068 R)
• M24: 40,495,695 km (0.057 R)
• M25: 42,319,293 km (0.052 R)
• M26: 44,196,896 km (0.09 R)
• M27: 46,129,251 km (0.098 R)
• M28: 49,054,039 km (0.117 R)
• M29: 51,773,579 km (0.114 R)
• M30: 53,419,455 km (0.067 R)
• M31: 58,920,169 km (0.109 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 249 - 11,009 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit