🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217.2

Radius: 8.6

Gravity: 2.94 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.47 AU - 0.73 AU

Year: 321 Days

Day: 13.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 90,679,239 km

• M1: 106,962 km (0.087 R)
• M2: 515,813 km (0.114 R)
• M3: 810,521 km (0.052 R)
• M4: 1,411,306 km (0.101 R)
• M5: 1,893,460 km (0.086 R)
• M6: 2,733,751 km (0.106 R)
• M7: 3,214,559 km (0.069 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 351.3

Radius: 10.1

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.49 AU - 0.77 AU

Year: 345 Days

Day: 6.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 90,679,239 km

• M1: 125,961 km (0.093 R)
• M2: 480,060 km (0.117 R)
• M3: 851,810 km (0.116 R)
• M4: 1,269,188 km (0.108 R)
• M5: 1,716,486 km (0.084 R)
• M6: 2,032,437 km (0.116 R)
• M7: 2,512,347 km (0.085 R)
• M8: 2,830,093 km (0.066 R)
• M9: 3,225,180 km (0.099 R)
• M10: 3,548,013 km (0.062 R)
• M11: 4,043,780 km (0.067 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372.7

Radius: 14.7

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.56 AU - 0.94 AU

Year: 448 Days

Day: 13.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 90,679,239 km

• M1: 183,108 km (0.113 R)
• M2: 673,340 km (0.115 R)
• M3: 1,360,593 km (0.095 R)
• M4: 1,856,360 km (0.075 R)
• M5: 2,663,590 km (0.072 R)
• M6: 3,218,299 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 856.7

Radius: 14.1

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.66 AU - 1.02 AU

Year: 531 Days

Day: 14.8 Hours

Environment

Temp: -166 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 90,679,239 km

• M1: 175,329 km (0.119 R)
• M2: 648,656 km (0.112 R)
• M3: 1,131,558 km (0.075 R)
• M4: 1,608,925 km (0.098 R)
• M5: 2,186,522 km (0.11 R)
• M6: 2,935,409 km (0.1 R)
• M7: 3,466,033 km (0.085 R)
• M8: 4,428,097 km (0.119 R)
• M9: 4,866,718 km (0.1 R)
• M10: 5,473,487 km (0.095 R)
• M11: 6,778,579 km (0.096 R)
• M12: 7,299,628 km (0.043 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 42.4

Radius: 10.3

Gravity: 0.4 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 4.23 AU - 6.17 AU

Year: 8185 Days

Day: 9.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 90,679,239 km

• M1: 147,204 km (0.108 R)
• M2: 961,914 km (0.119 R)
• M3: 1,374,056 km (0.066 R)
• M4: 2,235,740 km (0.044 R)
• M5: 2,620,805 km (0.12 R)
• M6: 4,670,146 km (0.118 R)
• M7: 5,702,521 km (0.103 R)
• M8: 7,354,830 km (0.102 R)
• M9: 13,889,265 km (0.078 R)
• M10: 14,922,088 km (0.106 R)
• M11: 16,296,294 km (0.08 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 434.8

Radius: 5.8

Gravity: 12.93 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 6.4 AU - 7.46 AU

Year: 12592 Days

Day: 17.5 Hours

Environment

Temp: -237 °C

Axial Tilt: 11.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 90,679,239 km

• M1: 72,854 km (0.026 R)
• M2: 299,495 km (0.082 R)
• M3: 735,124 km (0.108 R)
• M4: 1,254,079 km (0.113 R)
• M5: 1,643,781 km (0.102 R)
• M6: 1,843,345 km (0.103 R)
• M7: 2,939,299 km (0.114 R)
• M8: 3,188,080 km (0.113 R)
• M9: 3,525,124 km (0.104 R)
• M10: 4,327,418 km (0.07 R)
• M11: 5,277,813 km (0.067 R)
• M12: 6,738,786 km (0.107 R)
• M13: 8,271,865 km (0.034 R)
• M14: 10,226,660 km (0.101 R)
• M15: 10,484,417 km (0.09 R)
• M16: 12,295,449 km (0.073 R)
• M17: 18,884,936 km (0.043 R)
• M18: 20,961,654 km (0.109 R)
• M19: 23,185,875 km (0.025 R)
• M20: 24,354,833 km (0.083 R)
• M21: 26,037,509 km (0.104 R)
• M22: 28,399,510 km (0.093 R)
• M23: 32,204,682 km (0.067 R)
• M24: 41,325,813 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 118.3

Radius: 5.6

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 5.71 AU - 9.13 AU

Year: 13951 Days

Day: 20.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 90,679,239 km

• M1: 73,602 km (0.075 R)
• M2: 260,450 km (0.052 R)
• M3: 897,737 km (0.114 R)
• M4: 1,264,850 km (0.115 R)
• M5: 3,349,347 km (0.11 R)
• M6: 4,559,743 km (0.101 R)
• M7: 5,816,964 km (0.101 R)
• M8: 9,850,272 km (0.078 R)
• M9: 11,822,869 km (0.05 R)
• M10: 13,167,904 km (0.107 R)
• M11: 14,611,673 km (0.05 R)
• M12: 21,669,700 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 973.4

Radius: 6.2

Gravity: 25.32 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 8.27 AU - 11.73 AU

Year: 21828 Days

Day: 23 Hours

Environment

Temp: -225 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 90,679,239 km

• M1: 77,043 km (0.113 R)
• M2: 407,953 km (0.048 R)
• M3: 679,174 km (0.118 R)
• M4: 916,137 km (0.093 R)
• M5: 1,237,922 km (0.097 R)
• M6: 2,286,753 km (0.087 R)
• M7: 2,990,611 km (0.06 R)
• M8: 3,797,542 km (0.073 R)
• M9: 5,127,467 km (0.083 R)
• M10: 5,328,527 km (0.077 R)
• M11: 7,847,755 km (0.073 R)
• M12: 8,555,353 km (0.105 R)
• M13: 11,402,350 km (0.103 R)
• M14: 12,380,570 km (0.071 R)
• M15: 14,824,551 km (0.048 R)
• M16: 15,233,402 km (0.081 R)
• M17: 15,565,958 km (0.098 R)
• M18: 16,418,366 km (0.086 R)
• M19: 18,496,281 km (0.112 R)
• M20: 19,065,949 km (0.082 R)
• M21: 19,745,124 km (0.07 R)
• M22: 22,090,818 km (0.111 R)
• M23: 22,624,135 km (0.025 R)
• M24: 47,871,019 km (0.099 R)
• M25: 50,032,260 km (0.053 R)
• M26: 51,508,641 km (0.074 R)
• M27: 53,777,293 km (0.079 R)
• M28: 73,661,094 km (0.1 R)
• M29: 76,294,615 km (0.115 R)
• M30: 89,596,409 km (0.221 R)
• M31: 90,407,678 km (0.192 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 340 - 11,776 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit