🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 984.1

Radius: 13.5

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.43 AU - 0.57 AU

Year: 240 Days

Day: 10.4 Hours

Environment

Temp: -133 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 30,404,427 km

• M1: 167,998 km (0.081 R)
• M2: 269,575 km (0.11 R)
• M3: 394,639 km (0.1 R)
• M4: 484,847 km (0.083 R)
• M5: 593,455 km (0.118 R)
• M6: 728,691 km (0.105 R)
• M7: 854,503 km (0.03 R)
• M8: 940,671 km (0.071 R)
• M9: 1,045,240 km (0.107 R)
• M10: 1,288,038 km (0.098 R)
• M11: 1,380,190 km (0.118 R)
• M12: 1,621,342 km (0.049 R)
• M13: 1,712,447 km (0.112 R)
• M14: 1,814,921 km (0.12 R)
• M15: 1,958,087 km (0.111 R)
• M16: 2,045,900 km (0.071 R)
• M17: 2,135,061 km (0.102 R)
• M18: 2,220,481 km (0.119 R)
• M19: 2,312,334 km (0.068 R)
• M20: 2,416,006 km (0.065 R)
• M21: 2,542,416 km (0.067 R)
• M22: 2,692,762 km (0.075 R)
• M23: 2,813,038 km (0.092 R)
• M24: 3,008,264 km (0.088 R)
• M25: 3,179,254 km (0.074 R)
• M26: 3,283,374 km (0.034 R)
• M27: 3,382,857 km (0.104 R)
• M28: 3,483,386 km (0.074 R)
• M29: 3,784,826 km (0.073 R)
• M30: 3,901,662 km (0.074 R)
• M31: 3,994,862 km (0.056 R)
• M32: 4,088,659 km (0.086 R)
• M33: 4,342,677 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.7

Radius: 8

Gravity: 6.62 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.62 AU - 0.86 AU

Year: 432 Days

Day: 7.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 30,404,427 km

• M1: 101,278 km (0.102 R)
• M2: 159,621 km (0.099 R)
• M3: 210,933 km (0.106 R)
• M4: 317,297 km (0.077 R)
• M5: 391,498 km (0.103 R)
• M6: 533,616 km (0.119 R)
• M7: 664,364 km (0.049 R)
• M8: 715,377 km (0.104 R)
• M9: 779,255 km (0.101 R)
• M10: 833,410 km (0.114 R)
• M11: 925,263 km (0.065 R)
• M12: 1,054,815 km (0.112 R)
• M13: 1,115,252 km (0.079 R)
• M14: 1,203,814 km (0.119 R)
• M15: 1,276,369 km (0.096 R)
• M16: 1,336,507 km (0.1 R)
• M17: 1,474,137 km (0.114 R)
• M18: 1,547,291 km (0.052 R)
• M19: 1,601,595 km (0.117 R)
• M20: 1,872,816 km (0.116 R)
• M21: 1,968,259 km (0.101 R)
• M22: 2,120,101 km (0.098 R)
• M23: 2,191,908 km (0.101 R)
• M24: 2,247,708 km (0.119 R)
• M25: 2,349,285 km (0.026 R)
• M26: 2,435,154 km (0.098 R)
• M27: 2,545,557 km (0.115 R)
• M28: 2,627,986 km (0.057 R)
• M29: 2,681,392 km (0.069 R)
• M30: 2,777,284 km (0.052 R)
• M31: 2,868,240 km (0.07 R)
• M32: 3,053,143 km (0.115 R)
• M33: 3,128,241 km (0.11 R)
• M34: 3,204,087 km (0.077 R)
• M35: 3,261,234 km (0.063 R)
• M36: 3,331,545 km (0.109 R)
• M37: 3,402,454 km (0.083 R)
• M38: 3,480,394 km (0.056 R)
• M39: 3,532,754 km (0.114 R)
• M40: 3,631,488 km (0.035 R)
• M41: 3,744,435 km (0.103 R)
• M42: 3,824,918 km (0.089 R)
• M43: 3,987,681 km (0.097 R)
• M44: 4,049,315 km (0.091 R)
• M45: 4,132,043 km (0.088 R)
• M46: 4,187,394 km (0.092 R)
• M47: 4,271,019 km (0.053 R)
• M48: 4,369,305 km (0.11 R)
• M49: 4,582,482 km (0.051 R)
• M50: 4,683,012 km (0.101 R)
• M51: 4,959,917 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.7

Radius: 12.8

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.71 AU - 0.87 AU

Year: 476 Days

Day: 13.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 30,404,427 km

• M1: 163,211 km (0.119 R)
• M2: 253,718 km (0.086 R)
• M3: 334,950 km (0.034 R)
• M4: 416,630 km (0.058 R)
• M5: 543,639 km (0.094 R)
• M6: 638,185 km (0.105 R)
• M7: 726,896 km (0.069 R)
• M8: 810,521 km (0.047 R)
• M9: 949,797 km (0.039 R)
• M10: 1,068,428 km (0.058 R)
• M11: 1,203,964 km (0.091 R)
• M12: 1,289,833 km (0.047 R)
• M13: 1,369,718 km (0.098 R)
• M14: 1,493,136 km (0.049 R)
• M15: 1,702,873 km (0.068 R)
• M16: 1,827,338 km (0.118 R)
• M17: 2,085,544 km (0.104 R)
• M18: 2,176,051 km (0.094 R)
• M19: 2,301,862 km (0.113 R)
• M20: 2,420,344 km (0.059 R)
• M21: 2,556,179 km (0.113 R)
• M22: 2,699,793 km (0.059 R)
• M23: 2,804,062 km (0.063 R)
• M24: 2,920,300 km (0.037 R)
• M25: 3,027,562 km (0.115 R)
• M26: 3,141,406 km (0.092 R)
• M27: 3,223,834 km (0.102 R)
• M28: 3,334,686 km (0.077 R)
• M29: 3,424,295 km (0.109 R)
• M30: 3,514,802 km (0.114 R)
• M31: 3,669,337 km (0.047 R)
• M32: 3,832,099 km (0.097 R)
• M33: 4,021,041 km (0.119 R)
• M34: 4,140,719 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 321.4

Radius: 12.2

Gravity: 2.16 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.14 AU - 1.86 AU

Year: 1246 Days

Day: 13.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 30,404,427 km

• M1: 153,188 km (0.092 R)
• M2: 233,223 km (0.077 R)
• M3: 317,447 km (0.082 R)
• M4: 440,715 km (0.069 R)
• M5: 585,077 km (0.089 R)
• M6: 714,928 km (0.094 R)
• M7: 826,528 km (0.102 R)
• M8: 969,245 km (0.101 R)
• M9: 1,050,177 km (0.102 R)
• M10: 1,186,311 km (0.087 R)
• M11: 1,328,728 km (0.095 R)
• M12: 1,571,825 km (0.056 R)
• M13: 1,860,848 km (0.086 R)
• M14: 2,020,020 km (0.086 R)
• M15: 2,250,700 km (0.109 R)
• M16: 2,446,673 km (0.069 R)
• M17: 2,568,895 km (0.105 R)
• M18: 2,657,457 km (0.061 R)
• M19: 2,801,220 km (0.116 R)
• M20: 3,012,602 km (0.094 R)
• M21: 3,519,888 km (0.093 R)
• M22: 3,618,772 km (0.097 R)
• M23: 3,738,451 km (0.091 R)
• M24: 3,869,798 km (0.057 R)
• M25: 4,241,399 km (0.111 R)
• M26: 4,357,337 km (0.118 R)
• M27: 4,474,173 km (0.113 R)
• M28: 4,613,898 km (0.069 R)
• M29: 4,722,206 km (0.103 R)
• M30: 4,820,492 km (0.097 R)
• M31: 4,930,596 km (0.093 R)
• M32: 5,141,978 km (0.041 R)
• M33: 5,277,065 km (0.048 R)
• M34: 5,493,234 km (0.099 R)
• M35: 5,794,075 km (0.085 R)
• M36: 5,887,723 km (0.116 R)
• M37: 5,981,820 km (0.067 R)
• M38: 6,064,698 km (0.117 R)
• M39: 6,424,032 km (0.065 R)
• M40: 6,508,854 km (0.093 R)
• M41: 7,088,246 km (0.112 R)
• M42: 7,201,043 km (0.09 R)
• M43: 7,479,445 km (0.098 R)
• M44: 7,581,620 km (0.113 R)
• M45: 7,697,110 km (0.12 R)
• M46: 7,890,839 km (0.118 R)
• M47: 8,020,839 km (0.076 R)
• M48: 8,112,393 km (0.076 R)
• M49: 8,191,082 km (0.109 R)
• M50: 8,269,920 km (0.091 R)
• M51: 8,548,322 km (0.091 R)
• M52: 8,748,932 km (0.11 R)
• M53: 8,883,720 km (0.069 R)
• M54: 8,978,415 km (0.109 R)
• M55: 9,141,477 km (0.115 R)
• M56: 9,223,457 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.1

Radius: 13.2

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 3.41 AU - 4.31 AU

Year: 5144 Days

Day: 8.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (70)

Outer Limit: 30,404,427 km

• M1: 221,854 km (0.053 R)
• M2: 515,664 km (0.094 R)
• M3: 685,009 km (0.084 R)
• M4: 977,772 km (0.052 R)
• M5: 1,121,086 km (0.119 R)
• M6: 1,259,165 km (0.108 R)
• M7: 1,443,619 km (0.051 R)
• M8: 1,553,275 km (0.039 R)
• M9: 1,959,882 km (0.071 R)
• M10: 2,128,927 km (0.115 R)
• M11: 2,255,038 km (0.094 R)
• M12: 2,498,284 km (0.061 R)
• M13: 2,767,411 km (0.097 R)
• M14: 3,081,716 km (0.047 R)
• M15: 3,189,127 km (0.081 R)
• M16: 3,297,735 km (0.072 R)
• M17: 3,407,690 km (0.117 R)
• M18: 3,537,541 km (0.108 R)
• M19: 3,726,034 km (0.07 R)
• M20: 4,614,945 km (0.094 R)
• M21: 4,779,802 km (0.106 R)
• M22: 5,009,733 km (0.034 R)
• M23: 5,307,583 km (0.103 R)
• M24: 5,545,892 km (0.071 R)
• M25: 5,854,213 km (0.038 R)
• M26: 6,077,862 km (0.106 R)
• M27: 6,464,722 km (0.118 R)
• M28: 6,603,250 km (0.096 R)
• M29: 6,953,758 km (0.104 R)
• M30: 7,238,592 km (0.096 R)
• M31: 7,406,591 km (0.097 R)
• M32: 8,190,783 km (0.066 R)
• M33: 8,770,923 km (0.05 R)
• M34: 8,898,829 km (0.095 R)
• M35: 9,234,228 km (0.091 R)
• M36: 9,390,558 km (0.057 R)
• M37: 10,024,254 km (0.106 R)
• M38: 10,184,773 km (0.116 R)
• M39: 10,644,636 km (0.089 R)
• M40: 10,808,446 km (0.059 R)
• M41: 11,416,711 km (0.116 R)
• M42: 11,500,486 km (0.095 R)
• M43: 11,781,281 km (0.119 R)
• M44: 12,092,744 km (0.056 R)
• M45: 12,178,314 km (0.117 R)
• M46: 12,550,813 km (0.091 R)
• M47: 12,810,963 km (0.067 R)
• M48: 13,513,475 km (0.081 R)
• M49: 13,750,438 km (0.118 R)
• M50: 13,899,288 km (0.116 R)
• M51: 14,168,564 km (0.064 R)
• M52: 14,499,923 km (0.119 R)
• M53: 15,201,088 km (0.12 R)
• M54: 15,913,324 km (0.044 R)
• M55: 16,007,122 km (0.062 R)
• M56: 16,573,200 km (0.109 R)
• M57: 17,952,343 km (0.057 R)
• M58: 18,147,568 km (0.085 R)
• M59: 18,507,650 km (0.108 R)
• M60: 18,606,235 km (0.091 R)
• M61: 19,267,907 km (0.101 R)
• M62: 19,937,507 km (0.119 R)
• M63: 20,072,294 km (0.11 R)
• M64: 20,173,572 km (0.116 R)
• M65: 21,024,485 km (0.056 R)
• M66: 21,196,074 km (0.095 R)
• M67: 22,026,192 km (0.042 R)
• M68: 22,305,342 km (0.085 R)
• M69: 23,185,127 km (0.101 R)
• M70: 23,575,727 km (0.09 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 316.8

Radius: 3

Gravity: 35.2 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 5.84 AU - 7.02 AU

Year: 11059 Days

Day: 17.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 30,404,427 km

• M1: 125,064 km (0.119 R)
• M2: 166,502 km (0.063 R)
• M3: 354,098 km (0.071 R)
• M4: 548,127 km (0.109 R)
• M5: 590,463 km (0.096 R)
• M6: 693,536 km (0.107 R)
• M7: 883,525 km (0.088 R)
• M8: 1,001,408 km (0.078 R)
• M9: 1,053,618 km (0.055 R)
• M10: 1,106,575 km (0.108 R)
• M11: 1,270,984 km (0.041 R)
• M12: 1,289,683 km (0.051 R)
• M13: 1,501,813 km (0.114 R)
• M14: 1,724,863 km (0.043 R)
• M15: 1,829,732 km (0.106 R)
• M16: 1,979,928 km (0.112 R)
• M17: 2,338,065 km (0.082 R)
• M18: 2,477,490 km (0.099 R)
• M19: 2,643,544 km (0.106 R)
• M20: 2,911,773 km (0.082 R)
• M21: 3,343,064 km (0.062 R)
• M22: 4,235,864 km (0.062 R)
• M23: 4,348,810 km (0.093 R)
• M24: 5,047,133 km (0.099 R)
• M25: 5,136,892 km (0.068 R)
• M26: 5,227,249 km (0.041 R)
• M27: 5,287,686 km (0.119 R)
• M28: 6,577,370 km (0.107 R)
• M29: 6,740,880 km (0.113 R)
• M30: 7,038,879 km (0.12 R)
• M31: 7,647,443 km (0.074 R)
• M32: 7,681,851 km (0.091 R)
• M33: 8,484,892 km (0.112 R)
• M34: 9,424,217 km (0.111 R)
• M35: 11,321,268 km (0.041 R)
• M36: 11,399,507 km (0.098 R)
• M37: 11,872,835 km (0.104 R)
• M38: 12,151,985 km (0.112 R)
• M39: 12,192,077 km (0.054 R)
• M40: 12,352,595 km (0.113 R)
• M41: 13,331,115 km (0.066 R)
• M42: 13,579,597 km (0.117 R)
• M43: 13,955,088 km (0.083 R)
• M44: 13,997,125 km (0.115 R)
• M45: 15,016,185 km (0.12 R)
• M46: 15,059,270 km (0.086 R)
• M47: 15,534,692 km (0.06 R)
• M48: 16,015,050 km (0.047 R)
• M49: 16,146,996 km (0.106 R)
• M50: 17,304,883 km (0.116 R)
• M51: 17,530,477 km (0.031 R)
• M52: 17,984,955 km (0.09 R)
• M53: 18,489,100 km (0.069 R)
• M54: 18,905,132 km (0.12 R)
• M55: 18,951,657 km (0.051 R)
• M56: 20,029,509 km (0.078 R)
• M57: 20,409,189 km (0.067 R)
• M58: 20,838,983 km (0.118 R)
• M59: 21,127,258 km (0.107 R)
• M60: 22,195,387 km (0.112 R)
• M61: 22,293,374 km (0.068 R)
• M62: 22,539,014 km (0.054 R)
• M63: 22,736,034 km (0.07 R)
• M64: 23,082,353 km (0.108 R)
• M65: 23,430,318 km (0.09 R)
• M66: 23,679,997 km (0.101 R)
• M67: 23,780,078 km (0.04 R)
• M68: 24,890,543 km (0.067 R)
• M69: 25,863,228 km (0.111 R)
• M70: 25,966,301 km (0.073 R)
• M71: 26,069,523 km (0.119 R)
• M72: 26,172,895 km (0.117 R)
• M73: 26,848,031 km (0.111 R)
• M74: 28,747,624 km (0.079 R)
• M75: 29,175,624 km (0.091 R)
• M76: 29,659,573 km (0.025 R)
• M77: 30,363,431 km (0.111 R)
• M78: 31,072,675 km (0.049 R)
• M79: 31,127,427 km (0.107 R)
• M80: 32,118,962 km (0.106 R)
• M81: 32,897,469 km (0.115 R)
• M82: 33,176,918 km (0.099 R)
• M83: 33,288,967 km (0.085 R)
• M84: 33,569,463 km (0.107 R)
• M85: 33,625,712 km (0.12 R)
• M86: 34,133,148 km (0.094 R)
• M87: 34,984,210 km (0.092 R)
• M88: 35,899,899 km (0.117 R)
• M89: 36,591,789 km (0.117 R)
• M90: 37,171,630 km (0.111 R)
• M91: 37,930,091 km (0.079 R)
• M92: 38,223,154 km (0.093 R)
• M93: 38,458,172 km (0.077 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 130.4

Radius: 6

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 5.44 AU - 7.82 AU

Year: 11579 Days

Day: 15.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 30,404,427 km

• M1: 290,519 km (0.077 R)
• M2: 748,139 km (0.084 R)
• M3: 879,935 km (0.043 R)
• M4: 962,662 km (0.115 R)
• M5: 1,019,360 km (0.107 R)
• M6: 1,077,254 km (0.102 R)
• M7: 1,383,032 km (0.045 R)
• M8: 1,431,203 km (0.112 R)
• M9: 1,731,895 km (0.084 R)
• M10: 1,818,961 km (0.071 R)
• M11: 1,871,918 km (0.105 R)
• M12: 2,015,682 km (0.087 R)
• M13: 2,070,584 km (0.075 R)
• M14: 2,125,935 km (0.117 R)
• M15: 2,181,735 km (0.054 R)
• M16: 2,256,983 km (0.09 R)
• M17: 2,333,128 km (0.076 R)
• M18: 2,507,560 km (0.085 R)
• M19: 2,931,071 km (0.093 R)
• M20: 3,014,247 km (0.082 R)
• M21: 3,507,771 km (0.034 R)
• M22: 3,752,663 km (0.08 R)
• M23: 3,865,908 km (0.089 R)
• M24: 4,118,729 km (0.067 R)
• M25: 4,472,378 km (0.068 R)
• M26: 4,811,217 km (0.105 R)
• M27: 5,360,241 km (0.044 R)
• M28: 6,220,728 km (0.08 R)
• M29: 6,327,840 km (0.084 R)
• M30: 6,544,159 km (0.115 R)
• M31: 6,653,216 km (0.106 R)
• M32: 7,011,652 km (0.09 R)
• M33: 7,376,521 km (0.116 R)
• M34: 7,433,219 km (0.086 R)
• M35: 7,690,079 km (0.064 R)
• M36: 7,978,802 km (0.119 R)
• M37: 8,776,309 km (0.119 R)
• M38: 8,926,804 km (0.066 R)
• M39: 8,987,242 km (0.077 R)
• M40: 9,352,560 km (0.086 R)
• M41: 9,537,163 km (0.079 R)
• M42: 9,629,914 km (0.087 R)
• M43: 9,722,814 km (0.059 R)
• M44: 9,847,429 km (0.074 R)
• M45: 10,098,006 km (0.112 R)
• M46: 10,701,484 km (0.113 R)
• M47: 11,153,568 km (0.108 R)
• M48: 11,414,766 km (0.098 R)
• M49: 11,678,059 km (0.085 R)
• M50: 11,976,506 km (0.096 R)
• M51: 12,143,458 km (0.074 R)
• M52: 12,243,987 km (0.115 R)
• M53: 12,378,476 km (0.074 R)
• M54: 12,513,413 km (0.078 R)
• M55: 13,402,473 km (0.115 R)
• M56: 14,029,887 km (0.099 R)
• M57: 14,666,874 km (0.102 R)
• M58: 14,773,987 km (0.117 R)
• M59: 15,240,881 km (0.088 R)
• M60: 15,458,098 km (0.112 R)
• M61: 15,822,368 km (0.109 R)
• M62: 15,968,825 km (0.069 R)
• M63: 16,670,888 km (0.036 R)
• M64: 16,782,637 km (0.078 R)
• M65: 16,857,286 km (0.118 R)
• M66: 17,044,284 km (0.113 R)
• M67: 18,028,339 km (0.107 R)
• M68: 18,450,055 km (0.079 R)
• M69: 19,225,421 km (0.08 R)
• M70: 19,656,263 km (0.12 R)
• M71: 20,209,326 km (0.108 R)
• M72: 20,328,555 km (0.04 R)
• M73: 20,607,555 km (0.087 R)
• M74: 21,492,576 km (0.108 R)
• M75: 21,817,503 km (0.07 R)
• M76: 21,858,343 km (0.063 R)
• M77: 22,595,711 km (0.07 R)
• M78: 22,760,718 km (0.069 R)
• M79: 24,221,391 km (0.107 R)
• M80: 24,432,474 km (0.115 R)
• M81: 24,899,219 km (0.118 R)
• M82: 25,497,311 km (0.04 R)
• M83: 26,186,808 km (0.11 R)
• M84: 26,882,289 km (0.117 R)
• M85: 27,672,016 km (0.082 R)
• M86: 27,848,541 km (0.082 R)
• M87: 27,981,235 km (0.096 R)
• M88: 28,602,963 km (0.101 R)
• M89: 29,184,450 km (0.11 R)
• M90: 30,041,197 km (0.034 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 275 - 18,083 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit