🌌 Stone's Star System Generator

Asteroid Belt

Center: 1.06 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.5

Radius: 0.76

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.74 AU - 2.5 AU

Year: 1133 Days

Day: 33.3 Hours

Environment

Temp: -80 °C

Axial Tilt: 15.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 2.44 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.81

Radius: 1.87

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 1.85 AU - 3.03 AU

Year: 1399 Days

Day: 20.5 Hours

Environment

Temp: -91 °C

Axial Tilt: 15.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.17 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 294.6

Radius: 11.8

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 7.44 AU - 8.34 AU

Year: 8136 Days

Day: 10.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 69,313,231 km

• M1: 146,756 km (0.095 R)
• M2: 580,589 km (0.05 R)
• M3: 1,146,518 km (0.117 R)
• M4: 1,623,286 km (0.087 R)
• M5: 2,125,337 km (0.068 R)
• M6: 2,573,083 km (0.092 R)
• M7: 3,617,576 km (0.06 R)
• M8: 4,261,146 km (0.042 R)
• M9: 5,171,449 km (0.045 R)
• M10: 6,494,642 km (0.108 R)
• M11: 8,069,309 km (0.116 R)
• M12: 8,607,562 km (0.117 R)
• M13: 9,251,880 km (0.116 R)
• M14: 9,884,979 km (0.061 R)
• M15: 10,819,516 km (0.07 R)
• M16: 12,456,416 km (0.1 R)
• M17: 13,334,107 km (0.047 R)
• M18: 15,328,546 km (0.091 R)
• M19: 16,035,396 km (0.089 R)
• M20: 16,949,588 km (0.117 R)
• M21: 23,797,132 km (0.078 R)
• M22: 25,718,118 km (0.071 R)
• M23: 27,740,532 km (0.099 R)
• M24: 29,056,993 km (0.055 R)

Planet 4 - Gas Giant

Semi-Major Axis: 11.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 78.7

Radius: 10.6

Gravity: 0.7 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 8.86 AU - 13.38 AU

Year: 13612 Days

Day: 14.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 69,313,231 km

• M1: 133,292 km (0.104 R)
• M2: 1,013,825 km (0.035 R)
• M3: 1,834,818 km (0.082 R)
• M4: 2,227,512 km (0.102 R)
• M5: 3,321,970 km (0.115 R)
• M6: 3,779,141 km (0.105 R)
• M7: 4,114,540 km (0.068 R)
• M8: 4,949,595 km (0.081 R)
• M9: 5,519,563 km (0.097 R)
• M10: 6,921,594 km (0.093 R)
• M11: 10,285,302 km (0.089 R)
• M12: 12,150,638 km (0.086 R)
• M13: 12,490,225 km (0.119 R)
• M14: 13,965,709 km (0.106 R)
• M15: 16,539,541 km (0.075 R)
• M16: 17,320,591 km (0.098 R)
• M17: 19,480,186 km (0.067 R)
• M18: 24,173,969 km (0.083 R)
• M19: 26,781,609 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 11.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 134.4

Radius: 13.2

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 10.26 AU - 12.14 AU

Year: 13759 Days

Day: 12.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 69,313,231 km

• M1: 165,754 km (0.078 R)
• M2: 816,954 km (0.115 R)
• M3: 2,871,681 km (0.1 R)
• M4: 11,090,139 km (0.11 R)
• M5: 13,232,231 km (0.114 R)
• M6: 15,456,602 km (0.059 R)
• M7: 16,064,867 km (0.069 R)
• M8: 16,500,196 km (0.116 R)
• M9: 21,447,697 km (0.077 R)
• M10: 25,751,029 km (0.078 R)
• M11: 26,606,729 km (0.096 R)

Planet 6 - Ice Giant

Semi-Major Axis: 14.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 611.4

Radius: 3.8

Gravity: 42.34 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 14.21 AU - 15.43 AU

Year: 20943 Days

Day: 15.3 Hours

Environment

Temp: -182 °C

Axial Tilt: 15.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 69,313,231 km

• M1: 48,171 km (0.112 R)
• M2: 198,217 km (0.084 R)
• M3: 380,278 km (0.116 R)
• M4: 502,350 km (0.085 R)
• M5: 1,014,573 km (0.097 R)
• M6: 1,171,202 km (0.091 R)
• M7: 2,253,243 km (0.056 R)
• M8: 2,638,906 km (0.102 R)
• M9: 2,810,046 km (0.055 R)
• M10: 3,779,141 km (0.061 R)
• M11: 7,158,857 km (0.084 R)
• M12: 9,484,505 km (0.08 R)
• M13: 9,886,474 km (0.101 R)
• M14: 10,540,965 km (0.111 R)
• M15: 11,673,271 km (0.077 R)
• M16: 12,134,781 km (0.111 R)
• M17: 15,950,574 km (0.106 R)
• M18: 18,215,336 km (0.107 R)
• M19: 18,568,088 km (0.071 R)
• M20: 21,069,364 km (0.102 R)
• M21: 22,450,601 km (0.114 R)
• M22: 22,754,285 km (0.111 R)
• M23: 23,996,396 km (0.108 R)
• M24: 24,420,207 km (0.105 R)
• M25: 30,640,935 km (0.097 R)
• M26: 32,153,519 km (0.103 R)
• M27: 40,021,619 km (0.059 R)
• M28: 42,595,002 km (0.084 R)
• M29: 42,749,686 km (0.105 R)
• M30: 43,528,941 km (0.108 R)
• M31: 47,235,677 km (0.092 R)
• M32: 47,901,089 km (0.09 R)
• M33: 49,250,461 km (0.09 R)
• M34: 50,625,116 km (0.091 R)
• M35: 55,822,595 km (0.055 R)
• M36: 60,188,908 km (0.086 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 162

Radius: 6

Gravity: 4.5 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 14.23 AU - 17.67 AU

Year: 23384 Days

Day: 15.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 69,313,231 km

• M1: 75,996 km (0.094 R)
• M2: 276,457 km (0.102 R)
• M3: 537,206 km (0.076 R)
• M4: 879,635 km (0.101 R)
• M5: 3,721,546 km (0.065 R)
• M6: 4,163,159 km (0.118 R)
• M7: 6,750,754 km (0.104 R)
• M8: 12,990,032 km (0.093 R)
• M9: 14,461,626 km (0.093 R)
• M10: 20,111,639 km (0.059 R)
• M11: 32,553,693 km (0.112 R)
• M12: 33,127,551 km (0.083 R)
• M13: 34,532,125 km (0.119 R)
• M14: 43,525,500 km (0.105 R)
• M15: 48,110,825 km (0.074 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 268.9

Radius: 8

Gravity: 4.2 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 13.87 AU - 21.89 AU

Year: 27754 Days

Day: 20.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 69,313,231 km

• M1: 99,483 km (0.086 R)
• M2: 612,753 km (0.097 R)
• M3: 898,485 km (0.115 R)
• M4: 1,207,105 km (0.111 R)
• M5: 1,701,676 km (0.034 R)
• M6: 2,102,149 km (0.093 R)
• M7: 2,497,536 km (0.101 R)
• M8: 3,092,487 km (0.092 R)
• M9: 3,382,857 km (0.045 R)
• M10: 4,332,803 km (0.034 R)
• M11: 5,757,424 km (0.082 R)
• M12: 6,281,315 km (0.093 R)
• M13: 8,192,727 km (0.096 R)
• M14: 11,489,715 km (0.074 R)
• M15: 15,578,973 km (0.09 R)
• M16: 18,328,582 km (0.11 R)
• M17: 19,371,727 km (0.081 R)
• M18: 24,559,183 km (0.054 R)
• M19: 24,871,843 km (0.095 R)
• M20: 25,292,961 km (0.056 R)
• M21: 26,149,259 km (0.082 R)
• M22: 33,708,888 km (0.111 R)
• M23: 35,536,974 km (0.094 R)
• M24: 37,292,655 km (0.081 R)
• M25: 41,859,728 km (0.084 R)
• M26: 45,519,939 km (0.041 R)
• M27: 48,728,814 km (0.098 R)
• M28: 51,401,978 km (0.102 R)
• M29: 55,772,031 km (0.073 R)
• M30: 58,139,417 km (0.074 R)
• M31: 60,005,651 km (0.063 R)
• M32: 63,856,898 km (0.098 R)
• M33: 66,043,870 km (0.034 R)
• M34: 69,313,181 km (0.042 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 556 - 17,490 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit