🌌 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 - Gas Giant

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 733.8

Radius: 8.2

Gravity: 10.91 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.5 AU - 0.66 AU

Year: 300 Days

Day: 9.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 43.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (49)

Outer Limit: 57,697,809 km

• M1: 121,324 km (0.083 R)
• M2: 176,974 km (0.118 R)
• M3: 252,820 km (0.076 R)
• M4: 314,006 km (0.101 R)
• M5: 387,159 km (0.047 R)
• M6: 443,707 km (0.052 R)
• M7: 497,563 km (0.094 R)
• M8: 625,917 km (0.092 R)
• M9: 698,024 km (0.099 R)
• M10: 881,730 km (0.084 R)
• M11: 939,923 km (0.077 R)
• M12: 1,019,659 km (0.095 R)
• M13: 1,076,955 km (0.105 R)
• M14: 1,169,257 km (0.104 R)
• M15: 1,281,755 km (0.079 R)
• M16: 1,380,040 km (0.084 R)
• M17: 1,439,281 km (0.077 R)
• M18: 1,555,668 km (0.115 R)
• M19: 1,631,814 km (0.046 R)
• M20: 1,748,350 km (0.113 R)
• M21: 1,872,965 km (0.079 R)
• M22: 1,954,197 km (0.099 R)
• M23: 2,026,303 km (0.095 R)
• M24: 2,083,599 km (0.104 R)
• M25: 2,151,965 km (0.05 R)
• M26: 2,258,778 km (0.117 R)
• M27: 2,312,783 km (0.07 R)
• M28: 2,389,228 km (0.079 R)
• M29: 2,444,280 km (0.099 R)
• M30: 2,538,975 km (0.074 R)
• M31: 2,600,909 km (0.081 R)
• M32: 2,663,440 km (0.06 R)
• M33: 2,714,902 km (0.065 R)
• M34: 2,789,851 km (0.106 R)
• M35: 2,842,060 km (0.087 R)
• M36: 3,030,703 km (0.074 R)
• M37: 3,284,720 km (0.113 R)
• M38: 3,358,472 km (0.032 R)
• M39: 3,457,805 km (0.12 R)
• M40: 3,665,746 km (0.106 R)
• M41: 3,716,759 km (0.091 R)
• M42: 3,780,937 km (0.089 R)
• M43: 3,975,563 km (0.117 R)
• M44: 4,027,923 km (0.101 R)
• M45: 4,126,956 km (0.117 R)
• M46: 4,220,156 km (0.097 R)
• M47: 4,287,026 km (0.099 R)
• M48: 4,347,613 km (0.096 R)
• M49: 4,558,546 km (0.104 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 218.5

Radius: 13.3

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.95 AU - 1.17 AU

Year: 740 Days

Day: 12.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 130.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 57,697,809 km

• M1: 171,888 km (0.088 R)
• M2: 264,788 km (0.112 R)
• M3: 416,181 km (0.111 R)
• M4: 548,127 km (0.115 R)
• M5: 648,357 km (0.048 R)
• M6: 736,171 km (0.084 R)
• M7: 853,905 km (0.118 R)
• M8: 943,514 km (0.074 R)
• M9: 1,063,940 km (0.079 R)
• M10: 1,161,627 km (0.062 R)
• M11: 1,392,008 km (0.113 R)
• M12: 1,526,048 km (0.086 R)
• M13: 1,886,728 km (0.082 R)
• M14: 2,053,829 km (0.092 R)
• M15: 2,154,209 km (0.118 R)
• M16: 2,366,190 km (0.089 R)
• M17: 2,452,956 km (0.046 R)
• M18: 2,636,214 km (0.102 R)
• M19: 2,719,988 km (0.114 R)
• M20: 2,843,856 km (0.118 R)
• M21: 3,036,837 km (0.065 R)
• M22: 3,179,404 km (0.1 R)
• M23: 3,282,476 km (0.086 R)
• M24: 3,379,865 km (0.097 R)
• M25: 3,563,272 km (0.044 R)
• M26: 3,822,674 km (0.113 R)
• M27: 3,932,629 km (0.109 R)
• M28: 4,080,880 km (0.043 R)
• M29: 4,246,336 km (0.038 R)
• M30: 4,513,966 km (0.099 R)
• M31: 4,638,132 km (0.098 R)
• M32: 4,747,788 km (0.032 R)
• M33: 4,866,269 km (0.05 R)
• M34: 5,009,883 km (0.114 R)
• M35: 5,195,235 km (0.113 R)
• M36: 5,350,218 km (0.1 R)
• M37: 5,473,636 km (0.055 R)
• M38: 5,589,575 km (0.102 R)
• M39: 5,765,352 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 991.8

Radius: 10.9

Gravity: 8.35 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 3.49 AU - 4.85 AU

Year: 5776 Days

Day: 6.1 Hours

Environment

Temp: -226 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 57,697,809 km

• M1: 144,960 km (0.111 R)
• M2: 360,232 km (0.074 R)
• M3: 469,737 km (0.066 R)
• M4: 645,515 km (0.111 R)
• M5: 728,093 km (0.083 R)
• M6: 844,480 km (0.088 R)
• M7: 999,463 km (0.108 R)
• M8: 1,130,511 km (0.107 R)
• M9: 1,558,959 km (0.104 R)
• M10: 1,654,403 km (0.081 R)
• M11: 1,791,584 km (0.034 R)
• M12: 2,161,839 km (0.107 R)
• M13: 2,312,484 km (0.069 R)
• M14: 2,422,289 km (0.109 R)
• M15: 2,556,328 km (0.117 R)
• M16: 2,785,213 km (0.117 R)
• M17: 3,337,528 km (0.099 R)
• M18: 3,512,259 km (0.058 R)
• M19: 3,690,280 km (0.082 R)
• M20: 3,767,473 km (0.112 R)
• M21: 3,845,114 km (0.11 R)
• M22: 3,923,503 km (0.106 R)
• M23: 4,568,869 km (0.096 R)
• M24: 4,735,521 km (0.073 R)
• M25: 4,960,815 km (0.108 R)
• M26: 5,422,025 km (0.055 R)
• M27: 5,777,021 km (0.09 R)
• M28: 6,760,328 km (0.049 R)
• M29: 7,271,504 km (0.057 R)
• M30: 7,531,654 km (0.108 R)
• M31: 7,795,096 km (0.067 R)
• M32: 8,028,020 km (0.086 R)
• M33: 8,534,858 km (0.118 R)
• M34: 8,603,224 km (0.067 R)
• M35: 10,298,617 km (0.094 R)
• M36: 10,627,882 km (0.108 R)
• M37: 10,701,484 km (0.081 R)
• M38: 11,371,832 km (0.034 R)
• M39: 11,940,902 km (0.099 R)
• M40: 12,441,606 km (0.108 R)
• M41: 12,597,038 km (0.112 R)
• M42: 13,383,923 km (0.052 R)
• M43: 14,840,109 km (0.076 R)
• M44: 15,503,426 km (0.053 R)
• M45: 15,838,824 km (0.087 R)
• M46: 16,007,271 km (0.047 R)
• M47: 16,346,260 km (0.109 R)
• M48: 17,290,372 km (0.114 R)
• M49: 18,252,137 km (0.106 R)
• M50: 18,561,805 km (0.083 R)
• M51: 18,828,687 km (0.061 R)
• M52: 19,007,307 km (0.059 R)
• M53: 19,096,767 km (0.039 R)
• M54: 20,318,981 km (0.106 R)
• M55: 21,612,853 km (0.044 R)
• M56: 21,706,352 km (0.061 R)
• M57: 22,411,407 km (0.12 R)
• M58: 22,743,065 km (0.103 R)
• M59: 23,028,647 km (0.053 R)
• M60: 23,747,764 km (0.096 R)
• M61: 23,940,895 km (0.119 R)
• M62: 24,376,973 km (0.12 R)
• M63: 25,011,717 km (0.077 R)
• M64: 25,701,363 km (0.089 R)
• M65: 26,048,430 km (0.059 R)
• M66: 26,197,729 km (0.082 R)
• M67: 26,297,361 km (0.036 R)
• M68: 26,447,108 km (0.095 R)
• M69: 29,604,671 km (0.12 R)
• M70: 30,124,972 km (0.106 R)
• M71: 32,450,172 km (0.077 R)
• M72: 34,014,068 km (0.12 R)
• M73: 34,231,733 km (0.073 R)
• M74: 34,504,300 km (0.054 R)
• M75: 34,942,173 km (0.119 R)
• M76: 35,381,841 km (0.117 R)
• M77: 35,492,095 km (0.105 R)
• M78: 35,878,656 km (0.05 R)
• M79: 36,044,709 km (0.119 R)
• M80: 36,322,213 km (0.101 R)
• M81: 36,767,566 km (0.043 R)
• M82: 37,214,714 km (0.048 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 199.2

Radius: 9.2

Gravity: 2.35 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 4.13 AU - 4.21 AU

Year: 5776 Days

Day: 12.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 60.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 57,697,809 km

• M1: 167,250 km (0.108 R)
• M2: 251,773 km (0.102 R)
• M3: 374,144 km (0.032 R)
• M4: 444,455 km (0.114 R)
• M5: 600,935 km (0.115 R)
• M6: 807,230 km (0.083 R)
• M7: 924,664 km (0.058 R)
• M8: 1,036,564 km (0.119 R)
• M9: 1,105,977 km (0.077 R)
• M10: 1,286,841 km (0.049 R)
• M11: 1,438,533 km (0.091 R)
• M12: 1,886,130 km (0.076 R)
• M13: 1,957,638 km (0.109 R)
• M14: 2,015,532 km (0.109 R)
• M15: 2,298,571 km (0.08 R)
• M16: 2,642,347 km (0.115 R)
• M17: 2,803,913 km (0.115 R)
• M18: 2,952,314 km (0.061 R)
• M19: 3,069,449 km (0.11 R)
• M20: 3,343,213 km (0.089 R)
• M21: 3,465,435 km (0.109 R)
• M22: 3,969,430 km (0.103 R)
• M23: 4,136,381 km (0.11 R)
• M24: 4,267,878 km (0.064 R)
• M25: 4,362,573 km (0.034 R)
• M26: 4,846,821 km (0.056 R)
• M27: 4,985,648 km (0.052 R)
• M28: 5,045,487 km (0.095 R)
• M29: 5,450,598 km (0.113 R)
• M30: 5,993,040 km (0.051 R)
• M31: 6,184,825 km (0.105 R)
• M32: 6,927,578 km (0.088 R)
• M33: 7,241,734 km (0.094 R)
• M34: 7,332,390 km (0.108 R)
• M35: 7,629,342 km (0.104 R)
• M36: 7,860,620 km (0.047 R)
• M37: 7,930,482 km (0.073 R)
• M38: 8,282,636 km (0.062 R)
• M39: 8,760,302 km (0.076 R)
• M40: 8,832,707 km (0.104 R)
• M41: 8,929,497 km (0.072 R)
• M42: 9,051,120 km (0.096 R)
• M43: 9,246,794 km (0.107 R)
• M44: 9,993,138 km (0.079 R)
• M45: 10,552,634 km (0.054 R)
• M46: 10,707,019 km (0.046 R)
• M47: 10,940,092 km (0.068 R)
• M48: 11,200,991 km (0.117 R)
• M49: 11,305,859 km (0.03 R)
• M50: 11,808,658 km (0.094 R)
• M51: 12,318,786 km (0.109 R)
• M52: 12,754,116 km (0.113 R)
• M53: 13,194,233 km (0.114 R)
• M54: 14,061,452 km (0.08 R)
• M55: 14,745,413 km (0.105 R)
• M56: 14,860,454 km (0.039 R)
• M57: 15,149,477 km (0.082 R)
• M58: 15,968,376 km (0.112 R)
• M59: 16,027,467 km (0.107 R)
• M60: 16,264,281 km (0.097 R)
• M61: 16,353,441 km (0.112 R)
• M62: 16,532,210 km (0.057 R)
• M63: 17,496,668 km (0.096 R)
• M64: 18,170,307 km (0.106 R)
• M65: 18,262,758 km (0.061 R)
• M66: 18,603,393 km (0.051 R)
• M67: 18,758,825 km (0.103 R)
• M68: 19,133,867 km (0.057 R)
• M69: 19,448,172 km (0.089 R)
• M70: 20,369,545 km (0.071 R)
• M71: 20,690,433 km (0.082 R)
• M72: 21,272,518 km (0.074 R)
• M73: 21,696,179 km (0.056 R)
• M74: 21,761,703 km (0.097 R)
• M75: 21,827,077 km (0.083 R)

Planet 5 - Ice Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 312.7

Radius: 4.9

Gravity: 13.02 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 5.52 AU - 5.88 AU

Year: 9230 Days

Day: 22.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 57,697,809 km

• M1: 62,083 km (0.109 R)
• M2: 138,378 km (0.11 R)
• M3: 207,343 km (0.093 R)
• M4: 361,578 km (0.104 R)
• M5: 548,875 km (0.11 R)
• M6: 792,719 km (0.039 R)
• M7: 911,201 km (0.104 R)
• M8: 1,035,516 km (0.04 R)
• M9: 1,476,681 km (0.049 R)
• M10: 1,641,687 km (0.071 R)
• M11: 1,812,677 km (0.113 R)
• M12: 1,851,423 km (0.119 R)
• M13: 2,296,178 km (0.112 R)
• M14: 2,465,971 km (0.083 R)
• M15: 3,022,326 km (0.095 R)
• M16: 3,068,402 km (0.083 R)
• M17: 3,615,930 km (0.113 R)
• M18: 3,938,613 km (0.035 R)
• M19: 4,218,959 km (0.061 R)
• M20: 4,505,589 km (0.063 R)
• M21: 4,879,583 km (0.103 R)
• M22: 5,291,277 km (0.109 R)
• M23: 5,459,125 km (0.042 R)
• M24: 5,571,922 km (0.07 R)
• M25: 5,857,505 km (0.096 R)
• M26: 6,031,038 km (0.095 R)
• M27: 6,265,159 km (0.113 R)
• M28: 6,802,814 km (0.033 R)
• M29: 7,386,096 km (0.094 R)
• M30: 7,448,478 km (0.097 R)
• M31: 7,542,276 km (0.095 R)
• M32: 7,699,653 km (0.084 R)
• M33: 7,731,218 km (0.071 R)
• M34: 8,242,394 km (0.051 R)
• M35: 8,567,470 km (0.09 R)
• M36: 8,896,735 km (0.11 R)
• M37: 10,012,436 km (0.038 R)
• M38: 10,116,107 km (0.109 R)
• M39: 10,185,371 km (0.025 R)
• M40: 11,028,804 km (0.046 R)
• M41: 11,064,408 km (0.029 R)
• M42: 11,422,845 km (0.098 R)
• M43: 11,675,964 km (0.04 R)
• M44: 12,077,485 km (0.109 R)
• M45: 12,114,286 km (0.108 R)
• M46: 12,969,238 km (0.051 R)
• M47: 14,190,854 km (0.101 R)
• M48: 14,658,347 km (0.068 R)
• M49: 16,010,114 km (0.086 R)
• M50: 16,171,829 km (0.087 R)
• M51: 16,700,957 km (0.053 R)
• M52: 16,782,787 km (0.112 R)
• M53: 16,823,777 km (0.067 R)
• M54: 17,318,497 km (0.103 R)
• M55: 18,660,689 km (0.054 R)
• M56: 19,559,473 km (0.083 R)
• M57: 19,645,791 km (0.054 R)
• M58: 19,992,409 km (0.099 R)
• M59: 20,079,475 km (0.049 R)
• M60: 20,166,541 km (0.104 R)
• M61: 20,297,439 km (0.076 R)
• M62: 20,516,151 km (0.041 R)
• M63: 20,956,119 km (0.077 R)
• M64: 21,710,989 km (0.06 R)
• M65: 22,114,305 km (0.043 R)
• M66: 22,384,479 km (0.09 R)
• M67: 23,110,477 km (0.113 R)
• M68: 24,260,137 km (0.03 R)
• M69: 24,771,911 km (0.09 R)
• M70: 24,865,260 km (0.115 R)
• M71: 24,912,085 km (0.099 R)
• M72: 25,334,100 km (0.116 R)
• M73: 25,381,224 km (0.075 R)
• M74: 25,616,840 km (0.075 R)
• M75: 26,042,895 km (0.054 R)
• M76: 26,519,065 km (0.112 R)
• M77: 26,854,164 km (0.119 R)
• M78: 26,950,056 km (0.117 R)
• M79: 27,286,951 km (0.077 R)
• M80: 27,576,722 km (0.105 R)
• M81: 27,818,921 km (0.12 R)
• M82: 28,991,768 km (0.072 R)
• M83: 30,380,336 km (0.073 R)
• M84: 30,630,463 km (0.094 R)
• M85: 30,881,488 km (0.117 R)
• M86: 31,739,582 km (0.096 R)
• M87: 31,841,159 km (0.111 R)
• M88: 32,708,078 km (0.048 R)
• M89: 32,759,241 km (0.099 R)
• M90: 33,118,725 km (0.107 R)
• M91: 34,308,776 km (0.107 R)
• M92: 34,412,896 km (0.063 R)
• M93: 34,465,105 km (0.072 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 675.9

Radius: 4

Gravity: 42.24 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 6.84 AU - 7.7 AU

Year: 13295 Days

Day: 18 Hours

Environment

Temp: -230 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (97)

Outer Limit: 57,697,809 km

• M1: 200,760 km (0.083 R)
• M2: 319,840 km (0.077 R)
• M3: 395,387 km (0.074 R)
• M4: 427,252 km (0.103 R)
• M5: 655,987 km (0.086 R)
• M6: 1,005,148 km (0.079 R)
• M7: 1,210,247 km (0.078 R)
• M8: 1,305,541 km (0.039 R)
• M9: 1,503,608 km (0.106 R)
• M10: 1,711,100 km (0.056 R)
• M11: 1,900,192 km (0.076 R)
• M12: 2,152,863 km (0.082 R)
• M13: 2,446,075 km (0.119 R)
• M14: 2,476,144 km (0.081 R)
• M15: 2,814,385 km (0.09 R)
• M16: 2,845,950 km (0.087 R)
• M17: 3,232,810 km (0.11 R)
• M18: 3,843,468 km (0.093 R)
• M19: 4,019,396 km (0.107 R)
• M20: 4,379,029 km (0.08 R)
• M21: 4,525,784 km (0.071 R)
• M22: 4,562,735 km (0.091 R)
• M23: 4,674,185 km (0.075 R)
• M24: 5,479,022 km (0.113 R)
• M25: 6,243,467 km (0.101 R)
• M26: 6,533,388 km (0.081 R)
• M27: 6,617,013 km (0.069 R)
• M28: 7,780,735 km (0.113 R)
• M29: 8,272,762 km (0.115 R)
• M30: 9,052,616 km (0.114 R)
• M31: 9,333,411 km (0.09 R)
• M32: 9,380,534 km (0.103 R)
• M33: 9,522,353 km (0.068 R)
• M34: 9,569,626 km (0.085 R)
• M35: 10,144,680 km (0.12 R)
• M36: 10,534,084 km (0.1 R)
• M37: 10,829,390 km (0.074 R)
• M38: 11,077,573 km (0.059 R)
• M39: 12,191,778 km (0.109 R)
• M40: 12,657,775 km (0.093 R)
• M41: 12,919,123 km (0.079 R)
• M42: 13,500,460 km (0.064 R)
• M43: 14,963,078 km (0.09 R)
• M44: 15,573,288 km (0.075 R)
• M45: 16,646,204 km (0.055 R)
• M46: 17,801,099 km (0.08 R)
• M47: 18,565,545 km (0.112 R)
• M48: 18,802,956 km (0.056 R)
• M49: 18,862,496 km (0.108 R)
• M50: 19,220,783 km (0.082 R)
• M51: 19,581,464 km (0.103 R)
• M52: 19,762,477 km (0.114 R)
• M53: 21,293,462 km (0.068 R)
• M54: 21,355,395 km (0.045 R)
• M55: 22,671,857 km (0.033 R)
• M56: 23,499,731 km (0.113 R)
• M57: 25,579,590 km (0.089 R)
• M58: 26,308,132 km (0.112 R)
• M59: 27,043,405 km (0.101 R)
• M60: 27,312,382 km (0.082 R)
• M61: 27,582,257 km (0.108 R)
• M62: 29,427,248 km (0.099 R)
• M63: 29,704,004 km (0.114 R)
• M64: 30,260,059 km (0.079 R)
• M65: 30,399,634 km (0.072 R)
• M66: 30,959,878 km (0.04 R)
• M67: 31,311,732 km (0.088 R)
• M68: 32,161,747 km (0.065 R)
• M69: 32,232,956 km (0.119 R)
• M70: 35,857,862 km (0.071 R)
• M71: 36,079,416 km (0.11 R)
• M72: 37,044,771 km (0.114 R)
• M73: 37,643,163 km (0.12 R)
• M74: 38,546,584 km (0.102 R)
• M75: 39,991,550 km (0.108 R)
• M76: 40,836,180 km (0.066 R)
• M77: 40,913,222 km (0.106 R)
• M78: 41,299,335 km (0.111 R)
• M79: 41,764,285 km (0.082 R)
• M80: 43,169,458 km (0.054 R)
• M81: 44,114,766 km (0.074 R)
• M82: 44,193,904 km (0.117 R)
• M83: 44,431,465 km (0.109 R)
• M84: 44,828,199 km (0.112 R)
• M85: 44,907,785 km (0.104 R)
• M86: 49,434,616 km (0.102 R)
• M87: 49,599,024 km (0.051 R)
• M88: 49,845,861 km (0.098 R)
• M89: 50,258,153 km (0.095 R)
• M90: 50,588,914 km (0.096 R)
• M91: 51,335,557 km (0.04 R)
• M92: 53,850,746 km (0.1 R)
• M93: 54,697,918 km (0.117 R)
• M94: 55,720,420 km (0.102 R)
• M95: 56,663,335 km (0.108 R)
• M96: 56,921,242 km (0.107 R)
• M97: 57,179,747 km (0.09 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 273 - 12,282 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit