🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 615.9

Radius: 9

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.71 AU - 0.73 AU

Year: 401 Days

Day: 12.2 Hours

Environment

Temp: -146 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 30,909,903 km

• M1: 122,670 km (0.071 R)
• M2: 212,279 km (0.088 R)
• M3: 287,378 km (0.098 R)
• M4: 360,680 km (0.11 R)
• M5: 420,220 km (0.078 R)
• M6: 487,091 km (0.076 R)
• M7: 590,014 km (0.085 R)
• M8: 678,277 km (0.028 R)
• M9: 815,458 km (0.116 R)
• M10: 872,904 km (0.098 R)
• M11: 931,995 km (0.108 R)
• M12: 1,032,225 km (0.068 R)
• M13: 1,095,056 km (0.113 R)
• M14: 1,154,596 km (0.065 R)
• M15: 1,325,587 km (0.086 R)
• M16: 1,424,172 km (0.105 R)
• M17: 1,484,609 km (0.082 R)
• M18: 1,587,233 km (0.119 R)
• M19: 1,660,536 km (0.118 R)
• M20: 1,740,422 km (0.05 R)
• M21: 1,827,039 km (0.046 R)
• M22: 1,904,082 km (0.044 R)
• M23: 1,982,321 km (0.06 R)
• M24: 2,084,347 km (0.104 R)
• M25: 2,182,483 km (0.108 R)
• M26: 2,383,393 km (0.089 R)
• M27: 2,480,034 km (0.092 R)
• M28: 2,578,020 km (0.078 R)
• M29: 2,689,770 km (0.059 R)
• M30: 2,950,519 km (0.057 R)
• M31: 3,015,444 km (0.112 R)
• M32: 3,080,819 km (0.047 R)
• M33: 3,179,703 km (0.086 R)
• M34: 3,340,221 km (0.041 R)
• M35: 3,428,185 km (0.116 R)
• M36: 3,523,927 km (0.108 R)
• M37: 3,620,568 km (0.11 R)
• M38: 3,851,846 km (0.102 R)
• M39: 3,980,051 km (0.108 R)
• M40: 4,052,008 km (0.03 R)
• M41: 4,117,083 km (0.047 R)
• M42: 4,336,393 km (0.106 R)
• M43: 4,410,295 km (0.117 R)
• M44: 4,634,841 km (0.072 R)
• M45: 4,809,572 km (0.095 R)
• M46: 4,878,536 km (0.049 R)
• M47: 4,947,800 km (0.102 R)
• M48: 5,048,479 km (0.094 R)
• M49: 5,188,952 km (0.088 R)
• M50: 5,275,419 km (0.084 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 624.2

Radius: 10.7

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.71 AU - 0.77 AU

Year: 418 Days

Day: 11.4 Hours

Environment

Temp: -151 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 30,909,903 km

• M1: 137,780 km (0.04 R)
• M2: 215,271 km (0.109 R)
• M3: 282,890 km (0.041 R)
• M4: 374,443 km (0.053 R)
• M5: 463,005 km (0.108 R)
• M6: 571,015 km (0.098 R)
• M7: 666,010 km (0.084 R)
• M8: 779,106 km (0.085 R)
• M9: 886,367 km (0.104 R)
• M10: 963,859 km (0.1 R)
• M11: 1,116,898 km (0.11 R)
• M12: 1,504,057 km (0.097 R)
• M13: 1,608,776 km (0.089 R)
• M14: 1,754,035 km (0.083 R)
• M15: 1,881,343 km (0.107 R)
• M16: 1,983,069 km (0.092 R)
• M17: 2,145,233 km (0.116 R)
• M18: 2,227,961 km (0.101 R)
• M19: 2,557,525 km (0.094 R)
• M20: 2,632,923 km (0.104 R)
• M21: 2,844,005 km (0.091 R)
• M22: 2,928,827 km (0.067 R)
• M23: 3,040,876 km (0.111 R)
• M24: 3,134,375 km (0.073 R)
• M25: 3,222,039 km (0.114 R)
• M26: 3,545,769 km (0.084 R)
• M27: 3,743,687 km (0.098 R)
• M28: 3,815,344 km (0.067 R)
• M29: 3,989,027 km (0.109 R)
• M30: 4,098,982 km (0.068 R)
• M31: 4,217,314 km (0.069 R)
• M32: 4,374,541 km (0.082 R)
• M33: 4,449,938 km (0.112 R)
• M34: 4,548,822 km (0.119 R)
• M35: 4,748,685 km (0.115 R)
• M36: 4,857,592 km (0.1 R)
• M37: 4,982,955 km (0.073 R)
• M38: 5,157,237 km (0.099 R)
• M39: 5,381,933 km (0.095 R)
• M40: 5,593,464 km (0.026 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.5

Radius: 11.1

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.69 AU - 1.03 AU

Year: 523 Days

Day: 10.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 30,909,903 km

• M1: 143,315 km (0.086 R)
• M2: 241,301 km (0.115 R)
• M3: 349,161 km (0.11 R)
• M4: 451,636 km (0.11 R)
• M5: 563,386 km (0.104 R)
• M6: 655,987 km (0.096 R)
• M7: 754,721 km (0.086 R)
• M8: 838,496 km (0.072 R)
• M9: 917,185 km (0.049 R)
• M10: 1,007,542 km (0.077 R)
• M11: 1,165,068 km (0.034 R)
• M12: 1,235,230 km (0.089 R)
• M13: 1,404,874 km (0.068 R)
• M14: 1,566,888 km (0.056 R)
• M15: 1,650,364 km (0.075 R)
• M16: 1,724,564 km (0.076 R)
• M17: 1,816,417 km (0.069 R)
• M18: 1,915,451 km (0.117 R)
• M19: 1,993,691 km (0.073 R)
• M20: 2,084,646 km (0.039 R)
• M21: 2,165,280 km (0.115 R)
• M22: 2,270,746 km (0.089 R)
• M23: 2,395,810 km (0.099 R)
• M24: 2,572,485 km (0.051 R)
• M25: 2,880,956 km (0.088 R)
• M26: 3,082,315 km (0.098 R)
• M27: 3,248,069 km (0.116 R)
• M28: 3,512,708 km (0.103 R)
• M29: 3,658,117 km (0.106 R)
• M30: 3,791,558 km (0.087 R)
• M31: 4,027,025 km (0.033 R)
• M32: 4,400,571 km (0.059 R)
• M33: 4,482,551 km (0.112 R)
• M34: 4,610,457 km (0.096 R)
• M35: 4,701,412 km (0.117 R)
• M36: 4,877,339 km (0.049 R)
• M37: 4,977,869 km (0.109 R)
• M38: 5,118,192 km (0.101 R)
• M39: 5,196,731 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.3

Radius: 9

Gravity: 2.08 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.69 AU - 1.05 AU

Year: 532 Days

Day: 9.9 Hours

Environment

Temp: -146 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 30,909,903 km

• M1: 114,293 km (0.106 R)
• M2: 216,319 km (0.116 R)
• M3: 290,369 km (0.032 R)
• M4: 357,090 km (0.105 R)
• M5: 427,850 km (0.07 R)
• M6: 501,452 km (0.039 R)
• M7: 562,189 km (0.085 R)
• M8: 638,334 km (0.118 R)
• M9: 791,672 km (0.096 R)
• M10: 1,031,627 km (0.059 R)
• M11: 1,162,375 km (0.098 R)
• M12: 1,229,844 km (0.096 R)
• M13: 1,343,987 km (0.028 R)
• M14: 1,423,573 km (0.092 R)
• M15: 1,509,143 km (0.03 R)
• M16: 1,600,847 km (0.113 R)
• M17: 1,703,471 km (0.084 R)
• M18: 1,799,214 km (0.066 R)
• M19: 2,063,254 km (0.031 R)
• M20: 2,155,705 km (0.117 R)
• M21: 2,249,653 km (0.091 R)
• M22: 2,446,823 km (0.085 R)
• M23: 2,560,517 km (0.074 R)
• M24: 2,628,584 km (0.05 R)
• M25: 2,804,062 km (0.117 R)
• M26: 2,874,224 km (0.115 R)
• M27: 2,966,975 km (0.098 R)
• M28: 3,071,693 km (0.112 R)
• M29: 3,387,943 km (0.109 R)
• M30: 3,567,460 km (0.101 R)
• M31: 3,756,103 km (0.087 R)
• M32: 3,815,793 km (0.088 R)
• M33: 3,923,952 km (0.112 R)
• M34: 4,008,774 km (0.079 R)
• M35: 4,075,944 km (0.108 R)
• M36: 4,174,080 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.9

Radius: 14.5

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.81 AU - 1.05 AU

Year: 588 Days

Day: 13.3 Hours

Environment

Temp: -161 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 30,909,903 km

• M1: 181,911 km (0.04 R)
• M2: 279,150 km (0.087 R)
• M3: 378,483 km (0.069 R)
• M4: 550,371 km (0.117 R)
• M5: 687,552 km (0.038 R)
• M6: 831,315 km (0.116 R)
• M7: 922,420 km (0.081 R)
• M8: 1,025,194 km (0.065 R)
• M9: 1,197,830 km (0.062 R)
• M10: 1,354,609 km (0.102 R)
• M11: 1,460,225 km (0.09 R)
• M12: 1,568,833 km (0.116 R)
• M13: 1,666,371 km (0.063 R)
• M14: 1,858,006 km (0.081 R)
• M15: 1,956,591 km (0.09 R)
• M16: 2,057,120 km (0.052 R)
• M17: 2,159,445 km (0.07 R)
• M18: 2,258,479 km (0.037 R)
• M19: 2,509,803 km (0.045 R)
• M20: 2,636,363 km (0.118 R)
• M21: 2,918,954 km (0.037 R)
• M22: 3,134,524 km (0.103 R)
• M23: 3,343,512 km (0.104 R)
• M24: 3,557,138 km (0.12 R)
• M25: 3,656,322 km (0.102 R)
• M26: 3,813,100 km (0.098 R)
• M27: 3,921,110 km (0.066 R)
• M28: 4,068,912 km (0.076 R)
• M29: 4,185,898 km (0.103 R)
• M30: 4,356,888 km (0.091 R)
• M31: 4,503,494 km (0.073 R)
• M32: 4,671,942 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.7

Radius: 8.9

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 1.84 AU - 2.5 AU

Year: 2097 Days

Day: 8 Hours

Environment

Temp: -196 °C

Axial Tilt: 26.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 30,909,903 km

• M1: 116,387 km (0.097 R)
• M2: 191,036 km (0.048 R)
• M3: 337,942 km (0.062 R)
• M4: 487,240 km (0.108 R)
• M5: 608,265 km (0.103 R)
• M6: 852,409 km (0.091 R)
• M7: 1,351,467 km (0.11 R)
• M8: 1,482,216 km (0.086 R)
• M9: 1,562,849 km (0.11 R)
• M10: 1,747,303 km (0.116 R)
• M11: 1,823,149 km (0.104 R)
• M12: 1,890,468 km (0.068 R)
• M13: 2,027,500 km (0.117 R)
• M14: 2,117,408 km (0.109 R)
• M15: 2,239,480 km (0.075 R)
• M16: 2,479,884 km (0.116 R)
• M17: 2,652,221 km (0.092 R)
• M18: 2,761,876 km (0.106 R)
• M19: 2,974,604 km (0.102 R)
• M20: 3,065,709 km (0.115 R)
• M21: 3,215,905 km (0.075 R)
• M22: 3,368,495 km (0.08 R)
• M23: 3,571,649 km (0.027 R)
• M24: 3,803,526 km (0.105 R)
• M25: 3,952,525 km (0.049 R)
• M26: 4,078,188 km (0.084 R)
• M27: 4,424,207 km (0.103 R)
• M28: 4,594,300 km (0.065 R)
• M29: 4,660,273 km (0.072 R)
• M30: 4,819,894 km (0.112 R)
• M31: 4,886,914 km (0.104 R)
• M32: 5,254,326 km (0.093 R)
• M33: 5,972,845 km (0.107 R)
• M34: 6,483,721 km (0.068 R)
• M35: 6,572,582 km (0.035 R)
• M36: 6,677,002 km (0.11 R)
• M37: 6,902,446 km (0.113 R)
• M38: 6,978,142 km (0.108 R)
• M39: 7,084,656 km (0.064 R)
• M40: 7,703,393 km (0.078 R)
• M41: 7,892,484 km (0.116 R)
• M42: 8,258,999 km (0.114 R)
• M43: 9,899,789 km (0.103 R)
• M44: 10,364,290 km (0.113 R)
• M45: 10,451,206 km (0.111 R)
• M46: 10,695,500 km (0.086 R)
• M47: 10,800,817 km (0.082 R)
• M48: 10,977,193 km (0.062 R)
• M49: 11,047,952 km (0.118 R)
• M50: 11,655,768 km (0.093 R)
• M51: 11,963,791 km (0.113 R)
• M52: 12,128,049 km (0.074 R)
• M53: 12,201,202 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.7

Radius: 9.1

Gravity: 10.01 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 2.87 AU - 4.73 AU

Year: 4859 Days

Day: 7.4 Hours

Environment

Temp: -212 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 30,909,903 km

• M1: 127,757 km (0.089 R)
• M2: 189,092 km (0.093 R)
• M3: 328,068 km (0.088 R)
• M4: 772,224 km (0.053 R)
• M5: 838,346 km (0.053 R)
• M6: 934,388 km (0.097 R)
• M7: 1,245,103 km (0.103 R)
• M8: 1,371,962 km (0.117 R)
• M9: 1,553,723 km (0.048 R)
• M10: 1,760,917 km (0.075 R)
• M11: 2,183,231 km (0.043 R)
• M12: 2,279,124 km (0.084 R)
• M13: 2,376,661 km (0.087 R)
• M14: 2,455,499 km (0.101 R)
• M15: 2,718,343 km (0.117 R)
• M16: 2,801,071 km (0.077 R)
• M17: 2,905,639 km (0.086 R)
• M18: 3,161,901 km (0.082 R)
• M19: 3,628,197 km (0.119 R)
• M20: 3,719,452 km (0.094 R)
• M21: 3,857,979 km (0.114 R)
• M22: 4,283,436 km (0.096 R)
• M23: 4,674,185 km (0.113 R)
• M24: 4,873,899 km (0.115 R)
• M25: 4,949,595 km (0.071 R)
• M26: 5,204,510 km (0.117 R)
• M27: 5,359,643 km (0.075 R)
• M28: 5,914,352 km (0.079 R)
• M29: 6,266,954 km (0.096 R)
• M30: 6,879,258 km (0.119 R)
• M31: 7,510,711 km (0.12 R)
• M32: 7,981,495 km (0.115 R)
• M33: 8,070,955 km (0.092 R)
• M34: 8,220,553 km (0.068 R)
• M35: 8,644,513 km (0.07 R)
• M36: 8,797,701 km (0.108 R)
• M37: 8,890,003 km (0.116 R)
• M38: 9,044,687 km (0.117 R)
• M39: 9,450,845 km (0.083 R)
• M40: 9,735,530 km (0.035 R)
• M41: 9,959,029 km (0.116 R)
• M42: 10,345,890 km (0.11 R)
• M43: 10,475,890 km (0.039 R)
• M44: 10,573,877 km (0.034 R)
• M45: 11,034,788 km (0.088 R)
• M46: 11,772,455 km (0.093 R)
• M47: 12,078,831 km (0.105 R)
• M48: 12,838,788 km (0.106 R)
• M49: 12,978,662 km (0.089 R)
• M50: 13,083,830 km (0.113 R)
• M51: 13,259,906 km (0.053 R)
• M52: 13,756,871 km (0.076 R)
• M53: 13,899,886 km (0.109 R)
• M54: 14,223,766 km (0.11 R)
• M55: 14,695,896 km (0.12 R)
• M56: 15,581,067 km (0.073 R)
• M57: 15,692,966 km (0.083 R)
• M58: 15,992,461 km (0.08 R)
• M59: 16,218,504 km (0.111 R)
• M60: 16,711,728 km (0.082 R)
• M61: 17,171,292 km (0.094 R)
• M62: 18,299,260 km (0.102 R)
• M63: 18,535,625 km (0.117 R)
• M64: 18,693,750 km (0.059 R)
• M65: 18,772,887 km (0.069 R)
• M66: 19,170,818 km (0.055 R)
• M67: 19,250,703 km (0.116 R)
• M68: 20,258,843 km (0.106 R)
• M69: 20,421,755 km (0.073 R)
• M70: 20,544,276 km (0.05 R)
• M71: 21,449,791 km (0.102 R)
• M72: 21,865,674 km (0.084 R)
• M73: 22,747,703 km (0.077 R)
• M74: 23,299,569 km (0.047 R)
• M75: 23,384,990 km (0.11 R)
• M76: 24,114,130 km (0.092 R)
• M77: 24,676,767 km (0.086 R)
• M78: 25,375,240 km (0.111 R)
• M79: 26,036,013 km (0.116 R)
• M80: 26,568,731 km (0.098 R)
• M81: 27,644,789 km (0.078 R)
• M82: 27,916,010 km (0.067 R)
• M83: 28,598,027 km (0.078 R)
• M84: 28,963,943 km (0.085 R)
• M85: 29,654,337 km (0.115 R)
• M86: 30,257,067 km (0.052 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.8

Radius: 8.3

Gravity: 6.12 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 3.62 AU - 5.7 AU

Year: 6599 Days

Day: 14.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 143.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 30,909,903 km

• M1: 271,371 km (0.118 R)
• M2: 625,618 km (0.112 R)
• M3: 907,461 km (0.078 R)
• M4: 1,019,509 km (0.087 R)
• M5: 1,257,968 km (0.094 R)
• M6: 1,399,937 km (0.116 R)
• M7: 1,804,150 km (0.111 R)
• M8: 1,964,968 km (0.09 R)
• M9: 2,130,573 km (0.096 R)
• M10: 2,397,306 km (0.032 R)
• M11: 2,475,546 km (0.077 R)
• M12: 2,534,637 km (0.106 R)
• M13: 3,260,486 km (0.04 R)
• M14: 4,070,109 km (0.064 R)
• M15: 4,667,603 km (0.087 R)
• M16: 5,140,033 km (0.106 R)
• M17: 5,216,029 km (0.104 R)
• M18: 6,237,633 km (0.085 R)
• M19: 6,509,452 km (0.086 R)
• M20: 7,205,980 km (0.102 R)
• M21: 7,462,540 km (0.079 R)
• M22: 7,925,994 km (0.113 R)
• M23: 8,368,954 km (0.084 R)
• M24: 8,488,482 km (0.052 R)
• M25: 8,668,897 km (0.101 R)
• M26: 9,558,257 km (0.047 R)
• M27: 9,651,905 km (0.107 R)
• M28: 10,188,513 km (0.1 R)
• M29: 10,252,241 km (0.112 R)
• M30: 10,734,694 km (0.1 R)
• M31: 10,864,545 km (0.081 R)
• M32: 11,126,042 km (0.117 R)
• M33: 11,323,362 km (0.107 R)
• M34: 11,588,449 km (0.079 R)
• M35: 12,259,994 km (0.097 R)
• M36: 13,117,190 km (0.087 R)
• M37: 13,605,478 km (0.116 R)
• M38: 13,675,789 km (0.06 R)
• M39: 14,028,989 km (0.069 R)
• M40: 14,242,316 km (0.075 R)
• M41: 14,492,593 km (0.113 R)
• M42: 15,033,688 km (0.076 R)
• M43: 15,398,109 km (0.073 R)
• M44: 16,321,876 km (0.099 R)
• M45: 17,111,752 km (0.071 R)
• M46: 17,187,599 km (0.112 R)
• M47: 17,377,887 km (0.092 R)
• M48: 17,683,516 km (0.108 R)
• M49: 17,760,259 km (0.101 R)
• M50: 17,875,599 km (0.09 R)
• M51: 18,455,740 km (0.107 R)
• M52: 18,845,891 km (0.112 R)
• M53: 19,713,858 km (0.068 R)
• M54: 20,433,723 km (0.119 R)
• M55: 20,635,231 km (0.114 R)
• M56: 20,999,652 km (0.051 R)
• M57: 21,080,883 km (0.106 R)
• M58: 21,447,847 km (0.09 R)
• M59: 21,940,323 km (0.05 R)
• M60: 23,062,157 km (0.104 R)
• M61: 23,440,341 km (0.093 R)
• M62: 23,524,564 km (0.069 R)
• M63: 24,287,813 km (0.036 R)
• M64: 24,415,868 km (0.069 R)
• M65: 24,501,289 km (0.079 R)
• M66: 25,016,205 km (0.076 R)
• M67: 25,145,457 km (0.084 R)
• M68: 26,450,250 km (0.104 R)
• M69: 26,538,064 km (0.105 R)
• M70: 27,199,436 km (0.089 R)
• M71: 27,332,429 km (0.055 R)
• M72: 27,554,432 km (0.066 R)
• M73: 27,910,924 km (0.116 R)
• M74: 28,134,572 km (0.108 R)
• M75: 28,313,791 km (0.09 R)
• M76: 28,403,699 km (0.076 R)
• M77: 28,763,781 km (0.07 R)
• M78: 29,080,180 km (0.114 R)
• M79: 30,265,295 km (0.12 R)
• M80: 30,817,461 km (0.034 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 536 - 11,833 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit