🌌 Stone's Star System Generator

Planet 1 - Gas Giant

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.8

Radius: 14.1

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.58 AU - 0.66 AU

Year: 343 Days

Day: 9.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 77,012,755 km

• M1: 179,218 km (0.046 R)
• M2: 292,314 km (0.043 R)
• M3: 448,046 km (0.093 R)
• M4: 558,748 km (0.068 R)
• M5: 652,097 km (0.097 R)
• M6: 754,422 km (0.089 R)
• M7: 852,409 km (0.118 R)
• M8: 952,490 km (0.112 R)
• M9: 1,113,906 km (0.118 R)
• M10: 1,203,066 km (0.105 R)
• M11: 1,294,919 km (0.053 R)
• M12: 1,395,898 km (0.105 R)
• M13: 1,492,987 km (0.093 R)
• M14: 1,589,029 km (0.113 R)
• M15: 1,730,099 km (0.039 R)
• M16: 1,827,787 km (0.095 R)
• M17: 2,117,109 km (0.118 R)
• M18: 2,206,569 km (0.027 R)
• M19: 2,305,303 km (0.095 R)
• M20: 2,401,495 km (0.083 R)
• M21: 2,544,211 km (0.047 R)
• M22: 2,656,409 km (0.114 R)
• M23: 2,757,538 km (0.061 R)
• M24: 2,860,012 km (0.084 R)
• M25: 2,976,998 km (0.1 R)
• M26: 3,069,000 km (0.046 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.8

Radius: 9

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.88 AU - 1.06 AU

Year: 672 Days

Day: 10.3 Hours

Environment

Temp: -171 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 77,012,755 km

• M1: 112,946 km (0.079 R)
• M2: 170,392 km (0.079 R)
• M3: 286,031 km (0.108 R)
• M4: 382,223 km (0.106 R)
• M5: 469,438 km (0.07 R)
• M6: 608,415 km (0.091 R)
• M7: 683,363 km (0.096 R)
• M8: 757,414 km (0.084 R)
• M9: 816,056 km (0.111 R)
• M10: 918,980 km (0.07 R)
• M11: 1,046,587 km (0.041 R)
• M12: 1,117,795 km (0.103 R)
• M13: 1,249,142 km (0.106 R)
• M14: 1,314,217 km (0.102 R)
• M15: 1,447,659 km (0.118 R)
• M16: 1,556,715 km (0.084 R)
• M17: 1,764,656 km (0.032 R)
• M18: 1,844,392 km (0.048 R)
• M19: 1,956,591 km (0.119 R)
• M20: 2,026,453 km (0.068 R)
• M21: 2,122,943 km (0.113 R)
• M22: 2,188,168 km (0.066 R)
• M23: 2,387,881 km (0.083 R)
• M24: 2,455,799 km (0.105 R)
• M25: 2,517,583 km (0.092 R)
• M26: 2,691,714 km (0.047 R)
• M27: 2,783,867 km (0.117 R)
• M28: 2,891,577 km (0.074 R)
• M29: 3,022,625 km (0.083 R)
• M30: 3,111,187 km (0.074 R)
• M31: 3,230,566 km (0.097 R)
• M32: 3,497,000 km (0.117 R)
• M33: 3,582,271 km (0.119 R)
• M34: 3,652,432 km (0.118 R)
• M35: 3,818,336 km (0.094 R)
• M36: 3,954,321 km (0.1 R)
• M37: 4,363,770 km (0.112 R)
• M38: 4,615,992 km (0.118 R)
• M39: 4,709,640 km (0.1 R)
• M40: 4,795,360 km (0.076 R)
• M41: 4,873,001 km (0.105 R)
• M42: 4,968,295 km (0.075 R)
• M43: 5,029,480 km (0.034 R)
• M44: 5,231,737 km (0.103 R)
• M45: 5,590,173 km (0.109 R)
• M46: 5,809,035 km (0.116 R)
• M47: 5,928,713 km (0.073 R)
• M48: 6,021,464 km (0.115 R)
• M49: 6,208,312 km (0.096 R)
• M50: 6,330,683 km (0.101 R)
• M51: 6,444,527 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.4

Radius: 11.2

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.51 AU - 1.59 AU

Year: 1356 Days

Day: 7 Hours

Environment

Temp: -198 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 77,012,755 km

• M1: 141,071 km (0.073 R)
• M2: 218,413 km (0.049 R)
• M3: 299,046 km (0.119 R)
• M4: 390,750 km (0.113 R)
• M5: 464,352 km (0.062 R)
• M6: 537,505 km (0.047 R)
• M7: 618,737 km (0.096 R)
• M8: 746,045 km (0.094 R)
• M9: 819,048 km (0.099 R)
• M10: 895,044 km (0.075 R)
• M11: 1,015,770 km (0.106 R)
• M12: 1,307,485 km (0.102 R)
• M13: 1,383,481 km (0.083 R)
• M14: 1,460,973 km (0.117 R)
• M15: 1,595,312 km (0.12 R)
• M16: 1,702,723 km (0.091 R)
• M17: 1,786,348 km (0.04 R)
• M18: 1,892,862 km (0.065 R)
• M19: 1,968,558 km (0.118 R)
• M20: 2,067,742 km (0.107 R)
• M21: 2,196,845 km (0.084 R)
• M22: 2,386,834 km (0.06 R)
• M23: 2,624,545 km (0.091 R)
• M24: 2,957,849 km (0.073 R)
• M25: 3,129,737 km (0.069 R)
• M26: 3,403,651 km (0.066 R)
• M27: 3,510,015 km (0.082 R)
• M28: 3,719,452 km (0.113 R)
• M29: 3,863,664 km (0.052 R)
• M30: 3,981,847 km (0.085 R)
• M31: 4,286,129 km (0.04 R)
• M32: 4,379,627 km (0.119 R)
• M33: 4,466,693 km (0.096 R)
• M34: 4,590,710 km (0.103 R)
• M35: 4,679,122 km (0.098 R)
• M36: 4,805,233 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 36.4

Radius: 10.8

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.54 AU - 2.16 AU

Year: 1769 Days

Day: 10.6 Hours

Environment

Temp: -190 °C

Axial Tilt: 27.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 77,012,755 km

• M1: 136,882 km (0.057 R)
• M2: 226,192 km (0.102 R)
• M3: 328,367 km (0.083 R)
• M4: 543,639 km (0.099 R)
• M5: 652,696 km (0.037 R)
• M6: 769,980 km (0.091 R)
• M7: 869,313 km (0.075 R)
• M8: 964,457 km (0.117 R)
• M9: 1,361,789 km (0.056 R)
• M10: 1,469,051 km (0.057 R)
• M11: 1,536,819 km (0.102 R)
• M12: 1,627,176 km (0.03 R)
• M13: 1,719,328 km (0.079 R)
• M14: 1,807,890 km (0.106 R)
• M15: 1,995,336 km (0.054 R)
• M16: 2,065,049 km (0.104 R)
• M17: 2,159,445 km (0.114 R)
• M18: 2,334,176 km (0.087 R)
• M19: 2,589,539 km (0.104 R)
• M20: 2,749,609 km (0.112 R)
• M21: 2,821,117 km (0.097 R)
• M22: 2,899,955 km (0.106 R)
• M23: 3,086,653 km (0.095 R)
• M24: 3,229,369 km (0.116 R)
• M25: 3,311,798 km (0.091 R)
• M26: 3,416,067 km (0.063 R)
• M27: 3,677,714 km (0.114 R)
• M28: 3,785,724 km (0.063 R)
• M29: 3,924,102 km (0.061 R)
• M30: 4,027,025 km (0.057 R)
• M31: 4,258,453 km (0.04 R)
• M32: 4,471,181 km (0.085 R)
• M33: 4,907,259 km (0.104 R)
• M34: 5,082,438 km (0.078 R)
• M35: 5,162,623 km (0.103 R)
• M36: 5,324,487 km (0.03 R)
• M37: 5,611,865 km (0.086 R)

Planet 5 - Ice Giant

Semi-Major Axis: 5.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 501

Radius: 7.7

Gravity: 8.45 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 4.99 AU - 6.31 AU

Year: 9440 Days

Day: 21.9 Hours

Environment

Temp: -216 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 77,012,755 km

• M1: 231,129 km (0.054 R)
• M2: 559,346 km (0.092 R)
• M3: 767,138 km (0.115 R)
• M4: 930,499 km (0.114 R)
• M5: 1,486,404 km (0.109 R)
• M6: 1,712,746 km (0.106 R)
• M7: 1,972,298 km (0.102 R)
• M8: 2,314,429 km (0.07 R)
• M9: 2,950,968 km (0.09 R)
• M10: 3,502,685 km (0.115 R)
• M11: 3,611,442 km (0.097 R)
• M12: 3,666,195 km (0.085 R)
• M13: 3,721,247 km (0.094 R)
• M14: 3,832,249 km (0.079 R)
• M15: 3,888,198 km (0.105 R)
• M16: 4,200,559 km (0.063 R)
• M17: 4,403,563 km (0.114 R)
• M18: 4,879,733 km (0.105 R)
• M19: 5,001,356 km (0.115 R)
• M20: 5,185,661 km (0.082 R)
• M21: 5,341,093 km (0.116 R)
• M22: 5,466,456 km (0.039 R)
• M23: 5,688,160 km (0.118 R)
• M24: 5,945,319 km (0.102 R)
• M25: 6,239,129 km (0.108 R)
• M26: 7,778,042 km (0.088 R)
• M27: 7,884,705 km (0.071 R)
• M28: 9,089,267 km (0.064 R)
• M29: 9,352,111 km (0.115 R)
• M30: 9,655,645 km (0.091 R)
• M31: 9,770,237 km (0.064 R)
• M32: 10,194,496 km (0.096 R)
• M33: 10,901,646 km (0.085 R)
• M34: 11,543,420 km (0.092 R)
• M35: 11,705,734 km (0.103 R)
• M36: 11,950,775 km (0.099 R)
• M37: 12,947,696 km (0.109 R)
• M38: 13,712,739 km (0.096 R)
• M39: 13,970,945 km (0.104 R)
• M40: 14,144,030 km (0.116 R)
• M41: 14,317,863 km (0.119 R)
• M42: 15,375,370 km (0.086 R)
• M43: 16,824,225 km (0.074 R)
• M44: 17,332,260 km (0.094 R)
• M45: 18,316,165 km (0.052 R)
• M46: 20,093,537 km (0.06 R)
• M47: 21,176,027 km (0.082 R)
• M48: 21,275,510 km (0.105 R)
• M49: 21,374,993 km (0.079 R)
• M50: 21,574,407 km (0.073 R)
• M51: 21,774,568 km (0.094 R)
• M52: 22,075,859 km (0.05 R)
• M53: 22,429,209 km (0.075 R)
• M54: 22,886,081 km (0.111 R)
• M55: 23,090,282 km (0.111 R)
• M56: 23,243,769 km (0.113 R)
• M57: 23,551,642 km (0.059 R)
• M58: 23,706,176 km (0.092 R)
• M59: 24,016,143 km (0.032 R)
• M60: 24,587,906 km (0.054 R)
• M61: 25,322,132 km (0.12 R)
• M62: 26,383,529 km (0.101 R)
• M63: 26,651,010 km (0.07 R)
• M64: 27,784,813 km (0.111 R)
• M65: 27,948,024 km (0.029 R)
• M66: 28,111,684 km (0.077 R)
• M67: 28,330,246 km (0.084 R)
• M68: 28,439,752 km (0.107 R)
• M69: 28,769,017 km (0.116 R)
• M70: 29,154,979 km (0.115 R)
• M71: 29,709,090 km (0.098 R)
• M72: 29,931,841 km (0.108 R)
• M73: 30,099,241 km (0.096 R)
• M74: 30,715,435 km (0.079 R)
• M75: 30,940,580 km (0.108 R)
• M76: 32,417,410 km (0.108 R)
• M77: 33,510,970 km (0.116 R)
• M78: 33,568,865 km (0.113 R)
• M79: 33,800,891 km (0.066 R)
• M80: 33,916,979 km (0.101 R)
• M81: 34,616,798 km (0.071 R)
• M82: 34,851,068 km (0.11 R)
• M83: 35,262,312 km (0.09 R)
• M84: 35,734,294 km (0.09 R)
• M85: 36,030,498 km (0.036 R)
• M86: 36,386,840 km (0.071 R)
• M87: 36,863,758 km (0.043 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 435.6

Radius: 6

Gravity: 12.1 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 5.97 AU - 8.57 AU

Year: 13779 Days

Day: 20.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 77,012,755 km

• M1: 79,137 km (0.118 R)
• M2: 125,513 km (0.119 R)
• M3: 208,091 km (0.085 R)
• M4: 408,402 km (0.09 R)
• M5: 544,985 km (0.047 R)
• M6: 678,875 km (0.101 R)
• M7: 823,686 km (0.119 R)
• M8: 998,416 km (0.103 R)
• M9: 1,271,283 km (0.045 R)
• M10: 1,315,414 km (0.057 R)
• M11: 1,496,727 km (0.115 R)
• M12: 1,614,311 km (0.113 R)
• M13: 1,833,472 km (0.071 R)
• M14: 2,299,918 km (0.088 R)
• M15: 2,381,299 km (0.068 R)
• M16: 3,305,814 km (0.102 R)
• M17: 3,521,534 km (0.09 R)
• M18: 3,646,897 km (0.073 R)
• M19: 3,837,634 km (0.108 R)
• M20: 4,295,404 km (0.109 R)
• M21: 4,496,912 km (0.052 R)
• M22: 4,839,641 km (0.067 R)
• M23: 5,441,623 km (0.054 R)
• M24: 5,550,231 km (0.073 R)
• M25: 6,870,282 km (0.076 R)
• M26: 6,909,327 km (0.11 R)
• M27: 7,185,036 km (0.059 R)
• M28: 7,585,210 km (0.087 R)
• M29: 8,033,854 km (0.057 R)
• M30: 8,574,950 km (0.115 R)
• M31: 9,084,929 km (0.039 R)
• M32: 9,170,798 km (0.083 R)
• M33: 9,604,632 km (0.077 R)
• M34: 9,648,315 km (0.082 R)
• M35: 10,178,490 km (0.114 R)
• M36: 11,037,181 km (0.061 R)
• M37: 11,082,958 km (0.11 R)
• M38: 11,452,016 km (0.095 R)
• M39: 12,582,976 km (0.12 R)
• M40: 13,307,778 km (0.094 R)
• M41: 13,699,874 km (0.108 R)
• M42: 14,395,055 km (0.092 R)
• M43: 15,562,068 km (0.056 R)
• M44: 15,974,958 km (0.093 R)
• M45: 16,391,588 km (0.113 R)
• M46: 16,496,307 km (0.071 R)
• M47: 16,548,666 km (0.105 R)
• M48: 16,970,233 km (0.078 R)
• M49: 17,395,240 km (0.11 R)
• M50: 17,823,838 km (0.102 R)
• M51: 18,364,335 km (0.047 R)
• M52: 20,130,039 km (0.096 R)
• M53: 20,919,467 km (0.118 R)
• M54: 22,586,586 km (0.045 R)
• M55: 23,583,506 km (0.059 R)
• M56: 24,594,788 km (0.098 R)
• M57: 25,015,307 km (0.071 R)
• M58: 25,135,883 km (0.106 R)
• M59: 25,559,395 km (0.084 R)
• M60: 25,680,868 km (0.057 R)
• M61: 25,802,491 km (0.069 R)
• M62: 26,844,291 km (0.038 R)
• M63: 27,587,792 km (0.036 R)
• M64: 28,212,662 km (0.033 R)
• M65: 29,158,570 km (0.061 R)
• M66: 30,629,117 km (0.1 R)
• M67: 31,340,904 km (0.053 R)
• M68: 32,714,810 km (0.105 R)
• M69: 32,780,783 km (0.061 R)
• M70: 33,243,489 km (0.104 R)
• M71: 33,309,761 km (0.107 R)
• M72: 34,108,464 km (0.041 R)
• M73: 34,577,304 km (0.107 R)
• M74: 34,644,324 km (0.087 R)
• M75: 35,656,802 km (0.112 R)
• M76: 35,860,405 km (0.073 R)
• M77: 36,473,756 km (0.1 R)
• M78: 36,884,552 km (0.091 R)
• M79: 37,779,745 km (0.071 R)
• M80: 37,987,387 km (0.098 R)
• M81: 40,366,741 km (0.092 R)
• M82: 44,535,286 km (0.108 R)
• M83: 44,901,053 km (0.054 R)
• M84: 44,974,356 km (0.115 R)
• M85: 45,488,374 km (0.09 R)
• M86: 46,744,697 km (0.054 R)
• M87: 47,116,298 km (0.08 R)
• M88: 48,012,389 km (0.088 R)
• M89: 48,387,282 km (0.095 R)
• M90: 48,537,628 km (0.057 R)
• M91: 50,505,288 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 590.8

Radius: 3.9

Gravity: 38.84 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 9.69 AU - 10.13 AU

Year: 21929 Days

Day: 24.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (99)

Outer Limit: 77,012,755 km

• M1: 149,747 km (0.104 R)
• M2: 428,598 km (0.041 R)
• M3: 711,039 km (0.047 R)
• M4: 758,910 km (0.104 R)
• M5: 1,095,804 km (0.097 R)
• M6: 1,566,439 km (0.115 R)
• M7: 1,597,855 km (0.075 R)
• M8: 1,660,985 km (0.109 R)
• M9: 1,757,476 km (0.077 R)
• M10: 1,955,843 km (0.054 R)
• M11: 2,592,681 km (0.04 R)
• M12: 3,128,690 km (0.068 R)
• M13: 3,572,996 km (0.083 R)
• M14: 4,080,132 km (0.073 R)
• M15: 4,254,115 km (0.061 R)
• M16: 4,342,078 km (0.063 R)
• M17: 4,386,210 km (0.066 R)
• M18: 4,475,071 km (0.095 R)
• M19: 4,699,767 km (0.102 R)
• M20: 5,020,505 km (0.043 R)
• M21: 5,634,604 km (0.115 R)
• M22: 6,272,190 km (0.035 R)
• M23: 6,322,305 km (0.101 R)
• M24: 6,472,950 km (0.055 R)
• M25: 7,296,935 km (0.113 R)
• M26: 8,207,986 km (0.082 R)
• M27: 8,427,446 km (0.078 R)
• M28: 8,704,651 km (0.062 R)
• M29: 9,668,959 km (0.048 R)
• M30: 10,786,306 km (0.112 R)
• M31: 10,846,294 km (0.12 R)
• M32: 11,758,542 km (0.104 R)
• M33: 13,332,611 km (0.094 R)
• M34: 15,038,326 km (0.084 R)
• M35: 15,374,173 km (0.082 R)
• M36: 15,780,481 km (0.078 R)
• M37: 15,916,615 km (0.078 R)
• M38: 16,811,510 km (0.119 R)
• M39: 17,651,950 km (0.084 R)
• M40: 18,577,662 km (0.096 R)
• M41: 20,253,757 km (0.053 R)
• M42: 21,072,356 km (0.1 R)
• M43: 21,147,305 km (0.114 R)
• M44: 23,359,109 km (0.118 R)
• M45: 23,982,035 km (0.112 R)
• M46: 24,374,280 km (0.11 R)
• M47: 25,643,319 km (0.086 R)
• M48: 25,803,389 km (0.087 R)
• M49: 26,205,209 km (0.12 R)
• M50: 27,259,425 km (0.106 R)
• M51: 29,576,845 km (0.061 R)
• M52: 29,828,918 km (0.1 R)
• M53: 30,504,502 km (0.106 R)
• M54: 31,612,872 km (0.078 R)
• M55: 33,082,223 km (0.046 R)
• M56: 35,550,288 km (0.027 R)
• M57: 36,176,505 km (0.1 R)
• M58: 36,356,172 km (0.111 R)
• M59: 36,896,669 km (0.066 R)
• M60: 37,349,203 km (0.1 R)
• M61: 37,530,665 km (0.086 R)
• M62: 37,894,637 km (0.062 R)
• M63: 37,985,742 km (0.066 R)
• M64: 38,717,724 km (0.104 R)
• M65: 40,195,302 km (0.06 R)
• M66: 40,567,651 km (0.102 R)
• M67: 41,691,431 km (0.091 R)
• M68: 42,068,268 km (0.047 R)
• M69: 42,635,692 km (0.118 R)
• M70: 44,161,142 km (0.076 R)
• M71: 44,641,501 km (0.086 R)
• M72: 45,220,145 km (0.12 R)
• M73: 45,898,422 km (0.081 R)
• M74: 46,287,526 km (0.093 R)
• M75: 46,580,139 km (0.105 R)
• M76: 47,854,863 km (0.084 R)
• M77: 48,645,039 km (0.12 R)
• M78: 52,660,096 km (0.115 R)
• M79: 53,373,678 km (0.11 R)
• M80: 54,192,876 km (0.119 R)
• M81: 54,810,117 km (0.116 R)
• M82: 56,467,362 km (0.106 R)
• M83: 56,675,752 km (0.117 R)
• M84: 59,831,070 km (0.108 R)
• M85: 60,043,349 km (0.071 R)
• M86: 61,429,822 km (0.111 R)
• M87: 62,826,917 km (0.108 R)
• M88: 64,017,118 km (0.076 R)
• M89: 65,542,866 km (0.089 R)
• M90: 66,529,913 km (0.114 R)
• M91: 67,632,300 km (0.088 R)
• M92: 68,852,121 km (0.107 R)
• M93: 70,751,266 km (0.107 R)
• M94: 72,781,010 km (0.123 R)
• M95: 72,894,255 km (0.047 R)
• M96: 73,234,590 km (0.2 R)
• M97: 73,575,524 km (0.051 R)
• M98: 76,782,005 km (0.12 R)
• M99: 77,012,685 km (0.075 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 482 - 10,830 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit