🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.7 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 121.2

Radius: 8.3

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.15 AU - 1.65 AU

Year: 1143 Days

Day: 14.6 Hours

Environment

Temp: -182 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 58,783,028 km

• M1: 104,419 km (0.094 R)
• M2: 450,888 km (0.111 R)
• M3: 827,875 km (0.084 R)
• M4: 1,655,151 km (0.091 R)
• M5: 2,411,518 km (0.105 R)
• M6: 3,177,908 km (0.104 R)
• M7: 3,839,130 km (0.082 R)
• M8: 4,833,657 km (0.054 R)
• M9: 5,483,660 km (0.038 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.9

Radius: 12.2

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1.52 AU - 1.86 AU

Year: 1516 Days

Day: 13.9 Hours

Environment

Temp: -186 °C

Axial Tilt: 42.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 58,783,028 km

• M1: 151,692 km (0.073 R)
• M2: 758,760 km (0.081 R)
• M3: 1,805,497 km (0.079 R)
• M4: 2,882,601 km (0.095 R)
• M5: 3,624,906 km (0.086 R)
• M6: 4,117,083 km (0.107 R)
• M7: 4,703,058 km (0.087 R)
• M8: 5,271,979 km (0.049 R)
• M9: 6,221,476 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 229.8

Radius: 11

Gravity: 1.9 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 1.33 AU - 2.07 AU

Year: 1530 Days

Day: 12.5 Hours

Environment

Temp: -190 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 58,783,028 km

• M1: 169,794 km (0.091 R)
• M2: 639,980 km (0.085 R)
• M3: 1,303,596 km (0.073 R)
• M4: 1,803,702 km (0.105 R)
• M5: 2,396,558 km (0.098 R)
• M6: 2,812,141 km (0.088 R)
• M7: 4,855,199 km (0.1 R)
• M8: 5,584,189 km (0.071 R)
• M9: 6,536,230 km (0.109 R)
• M10: 7,425,290 km (0.041 R)
• M11: 7,812,749 km (0.085 R)
• M12: 8,315,846 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 990.1

Radius: 13.8

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 1.78 AU - 2.16 AU

Year: 1909 Days

Day: 13.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 58,783,028 km

• M1: 174,581 km (0.12 R)
• M2: 642,523 km (0.05 R)
• M3: 1,140,385 km (0.106 R)
• M4: 1,972,298 km (0.117 R)
• M5: 2,587,894 km (0.114 R)
• M6: 3,020,381 km (0.075 R)
• M7: 3,519,140 km (0.096 R)
• M8: 4,053,654 km (0.101 R)
• M9: 4,599,686 km (0.111 R)
• M10: 5,966,412 km (0.057 R)
• M11: 6,840,811 km (0.113 R)
• M12: 7,678,410 km (0.096 R)
• M13: 10,163,081 km (0.117 R)
• M14: 10,755,788 km (0.104 R)
• M15: 12,505,484 km (0.032 R)
• M16: 13,143,220 km (0.108 R)
• M17: 13,758,067 km (0.062 R)
• M18: 15,427,580 km (0.09 R)
• M19: 16,062,473 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 953.5

Radius: 14.8

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.201

Orbit Range: 3.45 AU - 5.19 AU

Year: 6198 Days

Day: 9.1 Hours

Environment

Temp: -229 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 58,783,028 km

• M1: 186,698 km (0.109 R)
• M2: 746,493 km (0.045 R)
• M3: 1,240,017 km (0.049 R)
• M4: 2,098,110 km (0.094 R)
• M5: 3,052,844 km (0.118 R)
• M6: 3,619,221 km (0.046 R)
• M7: 4,333,850 km (0.065 R)
• M8: 6,113,317 km (0.066 R)
• M9: 7,167,832 km (0.065 R)
• M10: 9,774,126 km (0.036 R)
• M11: 10,382,092 km (0.102 R)
• M12: 11,065,007 km (0.031 R)
• M13: 12,684,104 km (0.091 R)
• M14: 16,454,120 km (0.1 R)
• M15: 23,795,935 km (0.111 R)
• M16: 24,812,452 km (0.11 R)
• M17: 30,041,347 km (0.085 R)
• M18: 30,532,327 km (0.044 R)
• M19: 32,344,705 km (0.045 R)
• M20: 35,305,097 km (0.081 R)
• M21: 36,627,543 km (0.054 R)
• M22: 37,301,032 km (0.058 R)
• M23: 38,904,572 km (0.087 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 974.9

Radius: 7.9

Gravity: 15.62 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 6.06 AU - 7.22 AU

Year: 11810 Days

Day: 20.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 58,783,028 km

• M1: 98,286 km (0.114 R)
• M2: 363,523 km (0.073 R)
• M3: 820,544 km (0.109 R)
• M4: 1,083,837 km (0.099 R)
• M5: 1,376,600 km (0.107 R)
• M6: 1,942,528 km (0.05 R)
• M7: 2,319,066 km (0.084 R)
• M8: 2,699,045 km (0.082 R)
• M9: 3,071,244 km (0.08 R)
• M10: 3,638,519 km (0.119 R)
• M11: 5,433,993 km (0.074 R)
• M12: 6,382,444 km (0.051 R)
• M13: 7,044,863 km (0.075 R)
• M14: 9,359,740 km (0.11 R)
• M15: 12,513,413 km (0.077 R)
• M16: 13,482,957 km (0.105 R)
• M17: 14,711,455 km (0.115 R)
• M18: 21,990,139 km (0.076 R)
• M19: 24,371,288 km (0.04 R)
• M20: 25,067,517 km (0.047 R)
• M21: 32,061,068 km (0.098 R)
• M22: 32,656,617 km (0.114 R)
• M23: 33,380,970 km (0.111 R)
• M24: 39,839,708 km (0.114 R)
• M25: 55,159,727 km (0.104 R)
• M26: 56,186,716 km (0.09 R)
• M27: 60,061,750 km (0.107 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 553.5

Radius: 6.1

Gravity: 14.88 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 6.69 AU - 9.41 AU

Year: 15765 Days

Day: 24.7 Hours

Environment

Temp: -226 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 58,783,028 km

• M1: 78,389 km (0.071 R)
• M2: 305,180 km (0.037 R)
• M3: 684,560 km (0.073 R)
• M4: 2,168,421 km (0.112 R)
• M5: 3,416,367 km (0.108 R)
• M6: 4,058,590 km (0.117 R)
• M7: 5,185,960 km (0.044 R)
• M8: 5,840,600 km (0.112 R)
• M9: 7,052,044 km (0.088 R)
• M10: 7,401,504 km (0.06 R)
• M11: 8,374,040 km (0.104 R)
• M12: 8,815,803 km (0.037 R)
• M13: 13,650,955 km (0.1 R)
• M14: 14,401,189 km (0.079 R)
• M15: 14,610,476 km (0.095 R)
• M16: 17,598,843 km (0.044 R)
• M17: 17,838,200 km (0.088 R)
• M18: 33,991,179 km (0.1 R)
• M19: 35,619,851 km (0.111 R)
• M20: 40,262,023 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 237.1

Radius: 6.3

Gravity: 5.97 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 8.52 AU - 12.24 AU

Year: 23084 Days

Day: 16.4 Hours

Environment

Temp: -227 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 58,783,028 km

• M1: 78,389 km (0.057 R)
• M2: 314,305 km (0.037 R)
• M3: 584,030 km (0.103 R)
• M4: 952,340 km (0.068 R)
• M5: 1,539,960 km (0.026 R)
• M6: 2,093,622 km (0.108 R)
• M7: 2,616,916 km (0.071 R)
• M8: 5,078,997 km (0.091 R)
• M9: 5,867,228 km (0.117 R)
• M10: 6,942,688 km (0.081 R)
• M11: 8,285,179 km (0.044 R)
• M12: 8,621,774 km (0.085 R)
• M13: 9,118,289 km (0.061 R)
• M14: 13,800,254 km (0.119 R)
• M15: 20,912,286 km (0.107 R)
• M16: 21,716,973 km (0.106 R)
• M17: 25,343,076 km (0.077 R)
• M18: 26,878,997 km (0.098 R)
• M19: 31,857,764 km (0.098 R)
• M20: 32,092,334 km (0.086 R)
• M21: 34,132,549 km (0.057 R)
• M22: 35,121,990 km (0.086 R)
• M23: 36,130,429 km (0.089 R)
• M24: 36,385,493 km (0.106 R)
• M25: 43,447,261 km (0.051 R)
• M26: 44,902,399 km (0.078 R)
• M27: 45,940,160 km (0.066 R)
• M28: 50,410,294 km (0.075 R)
• M29: 51,209,146 km (0.032 R)
• M30: 51,692,497 km (0.065 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 209 - 13,173 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit