🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 503.4

Radius: 10.1

Gravity: 4.93 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.78 AU - 0.82 AU

Year: 469 Days

Day: 5.1 Hours

Environment

Temp: -148 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 70,812,472 km

• M1: 125,662 km (0.032 R)
• M2: 496,665 km (0.064 R)
• M3: 1,204,861 km (0.054 R)
• M4: 1,534,575 km (0.082 R)
• M5: 1,909,916 km (0.115 R)
• M6: 2,890,680 km (0.09 R)
• M7: 3,249,415 km (0.096 R)
• M8: 5,368,768 km (0.101 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 202.6

Radius: 13.3

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.76 AU - 0.86 AU

Year: 478 Days

Day: 11.5 Hours

Environment

Temp: -144 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 70,812,472 km

• M1: 165,605 km (0.085 R)
• M2: 582,385 km (0.03 R)
• M3: 1,343,389 km (0.109 R)
• M4: 1,790,238 km (0.035 R)
• M5: 2,790,748 km (0.047 R)
• M6: 3,292,649 km (0.106 R)
• M7: 3,911,984 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 169.6

Radius: 8.2

Gravity: 2.52 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.66 AU - 1.02 AU

Year: 505 Days

Day: 5.5 Hours

Environment

Temp: -139 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 70,812,472 km

• M1: 102,475 km (0.037 R)
• M2: 489,783 km (0.095 R)
• M3: 1,617,602 km (0.119 R)
• M4: 2,163,036 km (0.077 R)
• M5: 2,635,017 km (0.078 R)
• M6: 2,929,276 km (0.075 R)
• M7: 3,380,164 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 832.6

Radius: 13.9

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 3.33 AU - 3.49 AU

Year: 4131 Days

Day: 13.4 Hours

Environment

Temp: -203 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 70,812,472 km

• M1: 172,935 km (0.108 R)
• M2: 651,499 km (0.087 R)
• M3: 1,488,648 km (0.075 R)
• M4: 1,964,220 km (0.116 R)
• M5: 2,624,545 km (0.086 R)
• M6: 3,214,260 km (0.106 R)
• M7: 3,804,723 km (0.103 R)
• M8: 5,178,629 km (0.082 R)
• M9: 6,173,306 km (0.113 R)
• M10: 6,796,680 km (0.112 R)
• M11: 9,118,439 km (0.118 R)
• M12: 10,012,436 km (0.08 R)
• M13: 12,503,390 km (0.094 R)
• M14: 15,159,650 km (0.105 R)
• M15: 19,129,828 km (0.115 R)
• M16: 20,187,634 km (0.028 R)
• M17: 21,075,498 km (0.048 R)
• M18: 23,896,016 km (0.089 R)
• M19: 25,672,491 km (0.109 R)
• M20: 26,310,675 km (0.096 R)
• M21: 28,120,211 km (0.061 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 853.4

Radius: 13.7

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 3.32 AU - 3.84 AU

Year: 4444 Days

Day: 7.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 70,812,472 km

• M1: 173,833 km (0.118 R)
• M2: 1,103,733 km (0.088 R)
• M3: 1,634,506 km (0.043 R)
• M4: 2,258,928 km (0.089 R)
• M5: 2,855,524 km (0.03 R)
• M6: 3,619,670 km (0.08 R)
• M7: 5,111,909 km (0.116 R)
• M8: 6,556,575 km (0.079 R)
• M9: 7,218,995 km (0.098 R)
• M10: 8,523,937 km (0.099 R)
• M11: 9,152,248 km (0.093 R)
• M12: 11,178,102 km (0.104 R)
• M13: 11,883,456 km (0.07 R)
• M14: 13,176,431 km (0.105 R)
• M15: 14,071,325 km (0.088 R)
• M16: 16,575,893 km (0.094 R)
• M17: 18,252,586 km (0.044 R)
• M18: 19,099,011 km (0.118 R)
• M19: 20,940,560 km (0.08 R)
• M20: 22,748,899 km (0.119 R)
• M21: 28,105,850 km (0.109 R)
• M22: 28,709,926 km (0.098 R)
• M23: 29,234,715 km (0.114 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 37.5

Radius: 3.3

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 5.41 AU - 7.91 AU

Year: 11275 Days

Day: 24 Hours

Environment

Temp: -228 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 70,812,472 km

• M1: 42,187 km (0.099 R)
• M2: 242,049 km (0.104 R)
• M3: 556,504 km (0.091 R)
• M4: 735,274 km (0.046 R)
• M5: 1,199,177 km (0.119 R)
• M6: 1,551,480 km (0.089 R)
• M7: 1,993,840 km (0.11 R)
• M8: 2,096,913 km (0.105 R)
• M9: 3,441,050 km (0.09 R)
• M10: 3,552,201 km (0.093 R)
• M11: 3,980,051 km (0.107 R)
• M12: 6,876,865 km (0.114 R)
• M13: 7,263,126 km (0.081 R)
• M14: 7,758,146 km (0.112 R)
• M15: 7,949,481 km (0.082 R)
• M16: 9,668,211 km (0.102 R)
• M17: 12,039,038 km (0.094 R)
• M18: 14,384,434 km (0.048 R)
• M19: 15,714,359 km (0.09 R)
• M20: 19,248,010 km (0.072 R)
• M21: 19,364,397 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 638

Radius: 6.9

Gravity: 13.4 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 6.51 AU - 9.03 AU

Year: 14208 Days

Day: 21.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 70,812,472 km

• M1: 87,964 km (0.074 R)
• M2: 337,044 km (0.119 R)
• M3: 648,656 km (0.094 R)
• M4: 872,156 km (0.118 R)
• M5: 1,355,058 km (0.082 R)
• M6: 2,208,813 km (0.115 R)
• M7: 4,588,765 km (0.107 R)
• M8: 5,118,042 km (0.042 R)
• M9: 5,911,360 km (0.071 R)
• M10: 6,457,093 km (0.074 R)
• M11: 7,382,057 km (0.043 R)
• M12: 8,880,728 km (0.086 R)
• M13: 9,285,091 km (0.073 R)
• M14: 11,141,750 km (0.069 R)
• M15: 12,095,736 km (0.071 R)
• M16: 17,615,897 km (0.081 R)
• M17: 21,498,710 km (0.116 R)
• M18: 23,638,558 km (0.062 R)
• M19: 25,814,309 km (0.085 R)
• M20: 26,326,832 km (0.116 R)
• M21: 27,584,501 km (0.071 R)
• M22: 29,434,129 km (0.1 R)
• M23: 35,476,537 km (0.109 R)
• M24: 36,110,084 km (0.112 R)
• M25: 43,295,569 km (0.108 R)
• M26: 46,237,261 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 753.1

Radius: 7.8

Gravity: 12.38 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 8.25 AU - 9.35 AU

Year: 17125 Days

Day: 18.8 Hours

Environment

Temp: -238 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 70,812,472 km

• M1: 98,735 km (0.097 R)
• M2: 654,341 km (0.067 R)
• M3: 913,295 km (0.119 R)
• M4: 1,857,557 km (0.115 R)
• M5: 2,224,072 km (0.108 R)
• M6: 2,925,686 km (0.075 R)
• M7: 4,555,255 km (0.086 R)
• M8: 5,224,706 km (0.042 R)
• M9: 6,802,215 km (0.048 R)
• M10: 8,015,753 km (0.085 R)
• M11: 8,315,098 km (0.055 R)
• M12: 9,042,892 km (0.072 R)
• M13: 9,312,916 km (0.109 R)
• M14: 9,588,326 km (0.075 R)
• M15: 9,925,819 km (0.105 R)
• M16: 19,517,286 km (0.092 R)
• M17: 21,652,646 km (0.031 R)
• M18: 21,942,118 km (0.083 R)
• M19: 24,981,498 km (0.104 R)
• M20: 25,513,917 km (0.092 R)
• M21: 27,268,700 km (0.039 R)
• M22: 30,169,403 km (0.11 R)
• M23: 33,655,183 km (0.07 R)
• M24: 34,566,832 km (0.109 R)
• M25: 36,032,442 km (0.037 R)
• M26: 37,262,137 km (0.071 R)
• M27: 38,378,287 km (0.077 R)
• M28: 39,804,852 km (0.09 R)
• M29: 41,711,626 km (0.114 R)
• M30: 44,606,943 km (0.104 R)
• M31: 45,706,488 km (0.036 R)
• M32: 52,686,425 km (0.091 R)
• M33: 57,529,656 km (0.117 R)
• M34: 61,110,431 km (0.073 R)
• M35: 63,446,851 km (0.115 R)
• M36: 66,653,780 km (0.047 R)
• M37: 69,337,865 km (0.095 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 173 - 16,760 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit