🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 0.54 AU - 0.8 AU

Year: 360 Days

Day: 47.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 18.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 902.9

Radius: 13.6

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.67 AU - 0.93 AU

Year: 469 Days

Day: 12.8 Hours

Environment

Temp: -147 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 56,215,231 km

• M1: 169,195 km (0.12 R)
• M2: 677,529 km (0.096 R)
• M3: 1,162,076 km (0.106 R)
• M4: 1,602,642 km (0.059 R)
• M5: 2,284,808 km (0.098 R)
• M6: 2,839,068 km (0.091 R)
• M7: 3,914,228 km (0.11 R)
• M8: 4,591,458 km (0.085 R)
• M9: 5,047,582 km (0.058 R)
• M10: 5,499,367 km (0.066 R)
• M11: 6,070,083 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 933.4

Radius: 13.7

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.82 AU - 0.84 AU

Year: 496 Days

Day: 11.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 56,215,231 km

• M1: 170,392 km (0.072 R)
• M2: 598,691 km (0.084 R)
• M3: 1,067,082 km (0.115 R)
• M4: 1,529,788 km (0.115 R)
• M5: 1,997,880 km (0.116 R)
• M6: 2,521,622 km (0.107 R)
• M7: 3,078,126 km (0.113 R)
• M8: 3,676,218 km (0.112 R)
• M9: 4,426,302 km (0.119 R)
• M10: 5,074,659 km (0.083 R)
• M11: 6,762,422 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.5

Radius: 13.4

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 0.9 AU - 0.92 AU

Year: 569 Days

Day: 10.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 56,215,231 km

• M1: 166,652 km (0.082 R)
• M2: 610,060 km (0.104 R)
• M3: 1,496,727 km (0.11 R)
• M4: 2,009,249 km (0.112 R)
• M5: 2,427,225 km (0.08 R)
• M6: 3,154,869 km (0.101 R)
• M7: 3,998,751 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86.6

Radius: 14.6

Gravity: 0.41 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.81 AU - 1.23 AU

Year: 676 Days

Day: 13.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 56,215,231 km

• M1: 181,612 km (0.075 R)
• M2: 890,855 km (0.092 R)
• M3: 1,466,059 km (0.085 R)
• M4: 1,975,589 km (0.044 R)
• M5: 3,236,101 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.6

Radius: 12.3

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 2.1 AU - 3.1 AU

Year: 2750 Days

Day: 14.9 Hours

Environment

Temp: -207 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 56,215,231 km

• M1: 153,039 km (0.051 R)
• M2: 950,395 km (0.05 R)
• M3: 1,565,542 km (0.1 R)
• M4: 2,101,850 km (0.066 R)
• M5: 2,805,558 km (0.045 R)
• M6: 4,443,057 km (0.055 R)
• M7: 5,357,997 km (0.045 R)
• M8: 6,285,205 km (0.045 R)
• M9: 6,816,128 km (0.104 R)
• M10: 7,498,743 km (0.069 R)
• M11: 8,000,045 km (0.098 R)
• M12: 8,828,369 km (0.092 R)
• M13: 9,640,087 km (0.117 R)
• M14: 10,045,647 km (0.034 R)
• M15: 10,772,842 km (0.089 R)
• M16: 12,375,633 km (0.072 R)
• M17: 13,437,928 km (0.11 R)
• M18: 13,944,766 km (0.119 R)
• M19: 14,368,875 km (0.111 R)
• M20: 15,292,493 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 998.9

Radius: 8.1

Gravity: 15.22 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 3.36 AU - 4.88 AU

Year: 5486 Days

Day: 12.6 Hours

Environment

Temp: -208 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 56,215,231 km

• M1: 100,829 km (0.117 R)
• M2: 370,105 km (0.076 R)
• M3: 648,058 km (0.098 R)
• M4: 1,712,148 km (0.07 R)
• M5: 2,255,487 km (0.096 R)
• M6: 4,891,102 km (0.099 R)
• M7: 5,757,424 km (0.113 R)
• M8: 6,111,522 km (0.106 R)
• M9: 6,514,239 km (0.102 R)
• M10: 7,298,880 km (0.041 R)
• M11: 7,675,568 km (0.113 R)
• M12: 8,716,320 km (0.033 R)
• M13: 9,667,912 km (0.116 R)
• M14: 13,212,185 km (0.066 R)
• M15: 13,546,536 km (0.113 R)
• M16: 15,364,300 km (0.12 R)
• M17: 16,620,024 km (0.098 R)
• M18: 18,284,001 km (0.107 R)
• M19: 18,560,309 km (0.1 R)
• M20: 18,839,159 km (0.109 R)
• M21: 21,630,955 km (0.086 R)
• M22: 22,646,126 km (0.097 R)
• M23: 25,024,732 km (0.104 R)
• M24: 25,795,460 km (0.103 R)
• M25: 30,658,887 km (0.089 R)
• M26: 35,776,331 km (0.074 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526.6

Radius: 11.1

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 4.42 AU - 6.66 AU

Year: 8554 Days

Day: 9.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 56,215,231 km

• M1: 138,079 km (0.11 R)
• M2: 487,839 km (0.116 R)
• M3: 949,198 km (0.062 R)
• M4: 1,394,103 km (0.091 R)
• M5: 2,087,040 km (0.073 R)
• M6: 2,680,495 km (0.081 R)
• M7: 3,803,526 km (0.098 R)
• M8: 4,920,424 km (0.063 R)
• M9: 7,871,242 km (0.096 R)
• M10: 8,402,015 km (0.102 R)
• M11: 9,043,939 km (0.105 R)
• M12: 12,427,095 km (0.064 R)
• M13: 14,732,997 km (0.106 R)
• M14: 15,540,227 km (0.099 R)
• M15: 16,906,055 km (0.11 R)
• M16: 19,800,924 km (0.112 R)
• M17: 21,015,359 km (0.107 R)
• M18: 22,440,129 km (0.096 R)
• M19: 23,592,033 km (0.101 R)
• M20: 28,406,242 km (0.079 R)
• M21: 29,558,594 km (0.09 R)
• M22: 31,042,456 km (0.09 R)
• M23: 32,992,763 km (0.114 R)
• M24: 36,459,843 km (0.042 R)
• M25: 37,249,421 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 810.7

Radius: 3.5

Gravity: 66.18 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 5.46 AU - 6.66 AU

Year: 9786 Days

Day: 21.3 Hours

Environment

Temp: -226 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 56,215,231 km

• M1: 47,273 km (0.085 R)
• M2: 271,969 km (0.116 R)
• M3: 461,210 km (0.077 R)
• M4: 931,247 km (0.075 R)
• M5: 1,163,273 km (0.056 R)
• M6: 1,378,245 km (0.113 R)
• M7: 1,710,652 km (0.108 R)
• M8: 2,006,107 km (0.109 R)
• M9: 3,931,133 km (0.096 R)
• M10: 4,355,243 km (0.101 R)
• M11: 5,064,038 km (0.06 R)
• M12: 5,565,789 km (0.075 R)
• M13: 7,646,994 km (0.095 R)
• M14: 7,862,565 km (0.1 R)
• M15: 8,442,107 km (0.116 R)
• M16: 8,626,112 km (0.108 R)
• M17: 10,455,994 km (0.103 R)
• M18: 11,101,060 km (0.088 R)
• M19: 13,256,316 km (0.046 R)
• M20: 14,269,094 km (0.052 R)
• M21: 14,464,469 km (0.071 R)
• M22: 18,142,781 km (0.116 R)
• M23: 19,150,921 km (0.084 R)
• M24: 20,524,828 km (0.117 R)
• M25: 20,857,384 km (0.1 R)
• M26: 22,839,705 km (0.119 R)
• M27: 23,376,762 km (0.086 R)
• M28: 24,198,054 km (0.062 R)
• M29: 26,091,813 km (0.096 R)
• M30: 27,878,461 km (0.111 R)
• M31: 28,801,629 km (0.088 R)
• M32: 30,064,086 km (0.093 R)
• M33: 36,688,130 km (0.091 R)
• M34: 37,424,301 km (0.115 R)
• M35: 37,671,885 km (0.089 R)
• M36: 39,691,756 km (0.098 R)
• M37: 42,049,119 km (0.028 R)
• M38: 45,194,863 km (0.088 R)
• M39: 46,467,193 km (0.077 R)
• M40: 47,473,239 km (0.048 R)
• M41: 48,493,795 km (0.106 R)
• M42: 49,976,909 km (0.116 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 398.1

Radius: 5.6

Gravity: 12.69 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 6.63 AU - 10.65 AU

Year: 16660 Days

Day: 21.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 56,215,231 km

• M1: 74,051 km (0.09 R)
• M2: 262,993 km (0.119 R)
• M3: 473,328 km (0.101 R)
• M4: 1,250,040 km (0.066 R)
• M5: 2,237,685 km (0.112 R)
• M6: 2,435,902 km (0.115 R)
• M7: 2,645,788 km (0.091 R)
• M8: 3,556,241 km (0.109 R)
• M9: 3,939,211 km (0.057 R)
• M10: 4,199,661 km (0.085 R)
• M11: 4,564,829 km (0.092 R)
• M12: 7,693,968 km (0.114 R)
• M13: 8,764,042 km (0.05 R)
• M14: 9,616,151 km (0.102 R)
• M15: 10,467,363 km (0.105 R)
• M16: 11,138,010 km (0.029 R)
• M17: 11,956,161 km (0.088 R)
• M18: 12,257,900 km (0.109 R)
• M19: 12,564,576 km (0.063 R)
• M20: 13,515,569 km (0.085 R)
• M21: 15,847,202 km (0.118 R)
• M22: 16,138,020 km (0.097 R)
• M23: 16,805,376 km (0.097 R)
• M24: 20,938,616 km (0.118 R)
• M25: 21,643,072 km (0.034 R)
• M26: 23,192,158 km (0.101 R)
• M27: 25,902,273 km (0.089 R)
• M28: 27,541,866 km (0.03 R)
• M29: 32,172,967 km (0.087 R)
• M30: 35,906,032 km (0.11 R)
• M31: 37,554,002 km (0.082 R)
• M32: 41,547,966 km (0.086 R)
• M33: 48,512,196 km (0.1 R)
• M34: 49,279,483 km (0.081 R)
• M35: 52,913,365 km (0.071 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: 548 - 10,825 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit