🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.62 AU - 0.68 AU

Year: 338 Days

Day: 41.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 12.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672.7

Radius: 10.3

Gravity: 6.34 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.73 AU - 0.91 AU

Year: 479 Days

Day: 6.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 72,160,526 km

• M1: 128,056 km (0.089 R)
• M2: 455,526 km (0.111 R)
• M3: 875,148 km (0.076 R)
• M4: 1,546,992 km (0.092 R)
• M5: 2,056,372 km (0.064 R)
• M6: 2,514,441 km (0.051 R)
• M7: 3,462,592 km (0.099 R)
• M8: 3,805,171 km (0.071 R)
• M9: 4,603,575 km (0.118 R)
• M10: 5,907,919 km (0.078 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.1

Radius: 9.4

Gravity: 8.61 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.93 AU - 2.01 AU

Year: 1785 Days

Day: 13 Hours

Environment

Temp: -191 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 72,160,526 km

• M1: 117,584 km (0.095 R)
• M2: 434,731 km (0.084 R)
• M3: 981,063 km (0.077 R)
• M4: 1,749,397 km (0.099 R)
• M5: 2,153,013 km (0.072 R)
• M6: 2,456,098 km (0.061 R)
• M7: 2,831,439 km (0.057 R)
• M8: 3,542,478 km (0.05 R)
• M9: 4,212,676 km (0.096 R)
• M10: 4,964,854 km (0.05 R)
• M11: 5,271,829 km (0.087 R)
• M12: 6,219,831 km (0.116 R)
• M13: 7,305,462 km (0.066 R)
• M14: 7,908,192 km (0.105 R)
• M15: 10,405,280 km (0.117 R)
• M16: 11,774,549 km (0.094 R)
• M17: 12,482,446 km (0.111 R)
• M18: 13,682,371 km (0.078 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 104.2

Radius: 11.3

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 3.01 AU - 4.05 AU

Year: 4282 Days

Day: 6.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 72,160,526 km

• M1: 157,227 km (0.104 R)
• M2: 557,102 km (0.084 R)
• M3: 1,285,195 km (0.106 R)
• M4: 1,644,829 km (0.064 R)
• M5: 2,072,828 km (0.087 R)
• M6: 2,562,013 km (0.077 R)
• M7: 3,067,355 km (0.115 R)
• M8: 3,792,007 km (0.09 R)
• M9: 4,431,837 km (0.091 R)
• M10: 5,142,277 km (0.083 R)
• M11: 6,045,549 km (0.044 R)
• M12: 6,946,128 km (0.094 R)
• M13: 7,706,684 km (0.069 R)
• M14: 8,195,121 km (0.073 R)
• M15: 8,612,649 km (0.05 R)
• M16: 9,013,122 km (0.105 R)
• M17: 12,289,914 km (0.097 R)
• M18: 14,322,201 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 14

Radius: 10

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 3.87 AU - 4.49 AU

Year: 5518 Days

Day: 5.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 44.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 72,160,526 km

• M1: 126,709 km (0.059 R)
• M2: 660,026 km (0.066 R)
• M3: 1,191,397 km (0.064 R)
• M4: 2,195,947 km (0.041 R)
• M5: 3,368,645 km (0.113 R)
• M6: 5,808,885 km (0.085 R)
• M7: 6,826,899 km (0.039 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 772.4

Radius: 4.3

Gravity: 41.77 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 4.87 AU - 7.21 AU

Year: 9585 Days

Day: 16.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 72,160,526 km

• M1: 55,351 km (0.094 R)
• M2: 375,341 km (0.12 R)
• M3: 895,194 km (0.038 R)
• M4: 1,582,147 km (0.028 R)
• M5: 2,025,555 km (0.07 R)
• M6: 2,220,930 km (0.066 R)
• M7: 3,368,046 km (0.09 R)
• M8: 4,013,711 km (0.084 R)
• M9: 4,293,758 km (0.075 R)
• M10: 5,753,085 km (0.11 R)
• M11: 5,893,707 km (0.094 R)
• M12: 7,389,088 km (0.108 R)
• M13: 8,515,709 km (0.093 R)
• M14: 9,025,240 km (0.103 R)
• M15: 9,653,102 km (0.12 R)
• M16: 11,267,412 km (0.056 R)
• M17: 14,172,154 km (0.095 R)
• M18: 16,599,081 km (0.073 R)
• M19: 17,173,686 km (0.1 R)
• M20: 17,466,000 km (0.078 R)
• M21: 18,060,353 km (0.111 R)
• M22: 18,362,540 km (0.11 R)
• M23: 18,668,169 km (0.105 R)
• M24: 19,446,826 km (0.095 R)
• M25: 20,409,637 km (0.11 R)
• M26: 20,573,148 km (0.039 R)
• M27: 21,236,016 km (0.109 R)
• M28: 23,667,879 km (0.104 R)
• M29: 24,671,980 km (0.117 R)
• M30: 28,869,846 km (0.065 R)
• M31: 32,064,957 km (0.112 R)
• M32: 37,409,491 km (0.095 R)
• M33: 39,272,732 km (0.089 R)
• M34: 40,807,307 km (0.083 R)
• M35: 41,589,255 km (0.037 R)
• M36: 45,929,538 km (0.099 R)
• M37: 46,917,632 km (0.116 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 287.9

Radius: 6.1

Gravity: 7.74 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 5.66 AU - 6.64 AU

Year: 9848 Days

Day: 20.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 72,160,526 km

• M1: 113,545 km (0.04 R)
• M2: 433,235 km (0.089 R)
• M3: 845,976 km (0.119 R)
• M4: 1,350,270 km (0.037 R)
• M5: 2,414,210 km (0.115 R)
• M6: 3,350,693 km (0.078 R)
• M7: 4,780,101 km (0.116 R)
• M8: 4,976,373 km (0.091 R)
• M9: 6,171,211 km (0.071 R)
• M10: 13,422,968 km (0.078 R)
• M11: 13,985,307 km (0.103 R)
• M12: 14,446,218 km (0.073 R)
• M13: 15,952,519 km (0.099 R)
• M14: 22,790,039 km (0.086 R)
• M15: 23,347,889 km (0.041 R)
• M16: 25,329,762 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 12.6

Radius: 6

Gravity: 0.35 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 5.63 AU - 8.27 AU

Year: 11830 Days

Day: 22.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 29.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 72,160,526 km

• M1: 172,786 km (0.067 R)
• M2: 536,009 km (0.09 R)
• M3: 787,782 km (0.106 R)
• M4: 2,111,873 km (0.043 R)
• M5: 4,699,617 km (0.118 R)
• M6: 5,439,678 km (0.045 R)
• M7: 12,569,363 km (0.11 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 539.3

Radius: 5.7

Gravity: 16.6 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 8.23 AU - 12.03 AU

Year: 20818 Days

Day: 21 Hours

Environment

Temp: -230 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 72,160,526 km

• M1: 71,059 km (0.099 R)
• M2: 388,805 km (0.118 R)
• M3: 881,131 km (0.11 R)
• M4: 2,017,327 km (0.11 R)
• M5: 2,522,818 km (0.054 R)
• M6: 2,829,943 km (0.109 R)
• M7: 3,872,490 km (0.075 R)
• M8: 4,249,178 km (0.069 R)
• M9: 4,789,226 km (0.116 R)
• M10: 5,075,856 km (0.039 R)
• M11: 5,722,867 km (0.103 R)
• M12: 7,366,050 km (0.094 R)
• M13: 7,651,333 km (0.09 R)
• M14: 8,500,301 km (0.05 R)
• M15: 11,934,469 km (0.085 R)
• M16: 12,461,652 km (0.105 R)
• M17: 12,798,995 km (0.068 R)
• M18: 13,281,299 km (0.112 R)
• M19: 13,847,377 km (0.104 R)
• M20: 14,063,845 km (0.104 R)
• M21: 15,876,972 km (0.088 R)
• M22: 16,353,590 km (0.097 R)
• M23: 19,686,332 km (0.12 R)
• M24: 22,538,714 km (0.034 R)
• M25: 22,738,128 km (0.073 R)
• M26: 22,938,739 km (0.085 R)
• M27: 24,797,642 km (0.057 R)
• M28: 27,090,529 km (0.036 R)
• M29: 30,241,060 km (0.091 R)
• M30: 33,757,508 km (0.111 R)
• M31: 37,537,247 km (0.092 R)
• M32: 57,126,490 km (0.082 R)
• M33: 61,878,766 km (0.09 R)
• M34: 64,651,712 km (0.103 R)
• M35: 66,682,503 km (0.088 R)
• M36: 70,444,141 km (0.083 R)
• M37: 70,870,645 km (0.11 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: 371 - 17,701 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit