🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.16

Radius: 1.06

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.44 AU - 0.72 AU

Year: 285 Days

Day: 26.1 Hours

Environment

Temp: -131 °C

Axial Tilt: 13.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.52 AU - 0.76 AU

Year: 331 Days

Day: 42 Hours

Environment

Temp: -128 °C

Axial Tilt: 14.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 540.5

Radius: 11.8

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.68 AU - 0.74 AU

Year: 386 Days

Day: 9.8 Hours

Environment

Temp: -149 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 92,913,488 km

• M1: 150,645 km (0.083 R)
• M2: 612,753 km (0.079 R)
• M3: 1,014,423 km (0.08 R)
• M4: 1,592,021 km (0.115 R)
• M5: 2,253,393 km (0.111 R)
• M6: 2,681,991 km (0.115 R)
• M7: 3,090,991 km (0.037 R)
• M8: 3,576,436 km (0.094 R)
• M9: 4,215,818 km (0.082 R)
• M10: 4,988,042 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.7

Radius: 11.4

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 1.82 AU - 2 AU

Year: 1704 Days

Day: 8.2 Hours

Environment

Temp: -184 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 92,913,488 km

• M1: 144,212 km (0.107 R)
• M2: 628,909 km (0.062 R)
• M3: 1,035,068 km (0.112 R)
• M4: 1,636,152 km (0.074 R)
• M5: 2,356,316 km (0.107 R)
• M6: 3,187,931 km (0.067 R)
• M7: 3,609,946 km (0.073 R)
• M8: 4,084,171 km (0.107 R)
• M9: 4,648,903 km (0.079 R)
• M10: 6,071,579 km (0.102 R)
• M11: 7,132,826 km (0.081 R)
• M12: 7,673,324 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 161.9

Radius: 10.4

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.88 AU - 1.96 AU

Year: 1718 Days

Day: 10.2 Hours

Environment

Temp: -186 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 92,913,488 km

• M1: 129,402 km (0.114 R)
• M2: 490,531 km (0.099 R)
• M3: 1,013,825 km (0.096 R)
• M4: 2,631,726 km (0.088 R)
• M5: 3,147,240 km (0.075 R)
• M6: 3,627,150 km (0.106 R)
• M7: 4,219,109 km (0.114 R)
• M8: 5,291,725 km (0.09 R)
• M9: 7,797,191 km (0.069 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 635.7

Radius: 4.1

Gravity: 37.82 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 5.09 AU - 7.61 AU

Year: 10332 Days

Day: 16.6 Hours

Environment

Temp: -229 °C

Axial Tilt: 48.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 92,913,488 km

• M1: 51,162 km (0.101 R)
• M2: 329,415 km (0.116 R)
• M3: 833,111 km (0.063 R)
• M4: 1,167,611 km (0.079 R)
• M5: 2,045,302 km (0.072 R)
• M6: 2,334,176 km (0.095 R)
• M7: 2,488,411 km (0.08 R)
• M8: 2,732,704 km (0.081 R)
• M9: 3,037,585 km (0.108 R)
• M10: 4,488,086 km (0.11 R)
• M11: 6,382,593 km (0.083 R)
• M12: 6,840,213 km (0.056 R)
• M13: 7,820,378 km (0.077 R)
• M14: 8,659,922 km (0.09 R)
• M15: 9,078,048 km (0.102 R)
• M16: 10,309,537 km (0.071 R)
• M17: 10,673,509 km (0.036 R)
• M18: 10,885,190 km (0.089 R)
• M19: 11,481,936 km (0.061 R)
• M20: 11,760,337 km (0.116 R)
• M21: 12,214,965 km (0.1 R)
• M22: 13,402,772 km (0.089 R)
• M23: 13,836,157 km (0.089 R)
• M24: 14,993,297 km (0.03 R)
• M25: 16,705,295 km (0.115 R)
• M26: 17,062,684 km (0.055 R)
• M27: 17,645,069 km (0.064 R)
• M28: 21,086,867 km (0.114 R)
• M29: 21,336,696 km (0.113 R)
• M30: 21,504,245 km (0.085 R)
• M31: 27,244,914 km (0.115 R)
• M32: 27,541,118 km (0.119 R)
• M33: 29,989,436 km (0.072 R)
• M34: 31,808,846 km (0.038 R)
• M35: 36,496,645 km (0.068 R)
• M36: 39,317,911 km (0.052 R)
• M37: 41,755,309 km (0.072 R)
• M38: 45,389,640 km (0.107 R)
• M39: 47,782,757 km (0.045 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 417.1

Radius: 7.8

Gravity: 6.86 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 6.85 AU - 8.85 AU

Year: 14201 Days

Day: 18.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 92,913,488 km

• M1: 96,939 km (0.102 R)
• M2: 426,653 km (0.105 R)
• M3: 897,438 km (0.1 R)
• M4: 1,653,056 km (0.044 R)
• M5: 2,608,837 km (0.071 R)
• M6: 6,348,485 km (0.107 R)
• M7: 6,813,285 km (0.076 R)
• M8: 9,094,204 km (0.098 R)
• M9: 10,301,160 km (0.117 R)
• M10: 11,898,117 km (0.09 R)
• M11: 12,604,817 km (0.103 R)
• M12: 15,644,048 km (0.106 R)
• M13: 18,666,972 km (0.089 R)
• M14: 19,945,286 km (0.101 R)
• M15: 20,439,407 km (0.11 R)
• M16: 31,559,915 km (0.106 R)
• M17: 32,683,395 km (0.117 R)
• M18: 33,485,688 km (0.087 R)
• M19: 38,071,162 km (0.073 R)
• M20: 39,860,801 km (0.086 R)
• M21: 42,649,455 km (0.075 R)
• M22: 44,300,118 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 845

Radius: 4.6

Gravity: 39.93 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 11.06 AU - 11.4 AU

Year: 24299 Days

Day: 20 Hours

Environment

Temp: -233 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 92,913,488 km

• M1: 59,241 km (0.116 R)
• M2: 328,667 km (0.033 R)
• M3: 563,386 km (0.097 R)
• M4: 714,479 km (0.083 R)
• M5: 2,117,558 km (0.098 R)
• M6: 2,514,591 km (0.091 R)
• M7: 2,904,592 km (0.072 R)
• M8: 4,004,436 km (0.066 R)
• M9: 4,389,501 km (0.093 R)
• M10: 4,837,397 km (0.096 R)
• M11: 5,356,202 km (0.053 R)
• M12: 5,955,491 km (0.087 R)
• M13: 6,838,867 km (0.107 R)
• M14: 9,273,422 km (0.109 R)
• M15: 10,650,620 km (0.068 R)
• M16: 13,188,997 km (0.108 R)
• M17: 16,276,996 km (0.098 R)
• M18: 20,517,946 km (0.11 R)
• M19: 21,237,662 km (0.091 R)
• M20: 22,945,471 km (0.06 R)
• M21: 29,902,969 km (0.031 R)
• M22: 33,151,187 km (0.086 R)
• M23: 33,998,510 km (0.089 R)
• M24: 34,571,470 km (0.092 R)
• M25: 37,229,076 km (0.079 R)
• M26: 39,387,923 km (0.088 R)
• M27: 39,702,976 km (0.085 R)
• M28: 42,284,287 km (0.034 R)
• M29: 43,784,305 km (0.096 R)
• M30: 44,122,396 km (0.083 R)
• M31: 47,066,781 km (0.115 R)
• M32: 47,778,119 km (0.119 R)
• M33: 51,255,222 km (0.119 R)
• M34: 56,281,262 km (0.118 R)
• M35: 72,363,332 km (0.076 R)
• M36: 75,714,624 km (0.077 R)
• M37: 82,467,472 km (0.065 R)
• M38: 83,500,894 km (0.113 R)
• M39: 85,329,877 km (0.109 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 372 - 18,891 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit