🌌 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: 905.1

Radius: 14.8

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.69 AU - 0.75 AU

Year: 407 Days

Day: 12.6 Hours

Environment

Temp: -160 °C

Axial Tilt: 44.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 21,641,553 km

• M1: 185,651 km (0.101 R)
• M2: 336,446 km (0.084 R)
• M3: 429,047 km (0.118 R)
• M4: 524,640 km (0.116 R)
• M5: 653,294 km (0.087 R)
• M6: 761,453 km (0.081 R)
• M7: 890,257 km (0.12 R)
• M8: 1,008,439 km (0.07 R)
• M9: 1,207,105 km (0.09 R)
• M10: 1,392,756 km (0.068 R)
• M11: 1,538,764 km (0.074 R)
• M12: 1,644,679 km (0.092 R)
• M13: 1,770,640 km (0.075 R)
• M14: 1,870,422 km (0.11 R)
• M15: 1,990,250 km (0.043 R)
• M16: 2,137,604 km (0.102 R)
• M17: 2,250,700 km (0.119 R)
• M18: 2,437,249 km (0.098 R)
• M19: 2,568,895 km (0.109 R)
• M20: 2,696,352 km (0.065 R)
• M21: 2,791,646 km (0.096 R)
• M22: 2,888,136 km (0.044 R)
• M23: 3,006,917 km (0.114 R)
• M24: 3,227,724 km (0.107 R)
• M25: 3,321,970 km (0.037 R)
• M26: 3,476,206 km (0.118 R)
• M27: 3,587,955 km (0.092 R)
• M28: 3,784,377 km (0.081 R)
• M29: 3,884,010 km (0.06 R)
• M30: 3,984,539 km (0.092 R)
• M31: 4,451,883 km (0.119 R)
• M32: 4,679,870 km (0.116 R)
• M33: 4,820,193 km (0.093 R)
• M34: 4,936,879 km (0.067 R)
• M35: 5,062,990 km (0.109 R)
• M36: 5,156,040 km (0.095 R)
• M37: 5,578,056 km (0.118 R)
• M38: 5,683,074 km (0.077 R)
• M39: 6,047,195 km (0.075 R)
• M40: 6,146,229 km (0.062 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.7

Radius: 11.4

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.97 AU - 1.29 AU

Year: 801 Days

Day: 8.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (51)

Outer Limit: 21,641,553 km

• M1: 152,590 km (0.114 R)
• M2: 230,381 km (0.064 R)
• M3: 362,476 km (0.075 R)
• M4: 464,801 km (0.037 R)
• M5: 547,229 km (0.049 R)
• M6: 694,733 km (0.106 R)
• M7: 781,798 km (0.099 R)
• M8: 973,882 km (0.105 R)
• M9: 1,097,001 km (0.066 R)
• M10: 1,425,069 km (0.026 R)
• M11: 1,552,826 km (0.081 R)
• M12: 1,670,410 km (0.119 R)
• M13: 1,748,201 km (0.113 R)
• M14: 1,863,690 km (0.116 R)
• M15: 1,974,243 km (0.097 R)
• M16: 2,049,192 km (0.054 R)
• M17: 2,225,568 km (0.059 R)
• M18: 2,319,515 km (0.096 R)
• M19: 2,430,816 km (0.088 R)
• M20: 2,511,599 km (0.103 R)
• M21: 2,609,585 km (0.04 R)
• M22: 2,894,569 km (0.066 R)
• M23: 3,014,846 km (0.064 R)
• M24: 3,180,750 km (0.116 R)
• M25: 3,349,945 km (0.099 R)
• M26: 3,549,359 km (0.091 R)
• M27: 3,809,061 km (0.092 R)
• M28: 4,113,493 km (0.117 R)
• M29: 4,210,282 km (0.095 R)
• M30: 4,376,635 km (0.069 R)
• M31: 4,746,292 km (0.117 R)
• M32: 4,827,523 km (0.1 R)
• M33: 5,032,622 km (0.063 R)
• M34: 5,377,595 km (0.063 R)
• M35: 5,483,660 km (0.051 R)
• M36: 5,569,080 km (0.061 R)
• M37: 5,644,028 km (0.091 R)
• M38: 5,762,660 km (0.086 R)
• M39: 5,893,109 km (0.052 R)
• M40: 6,024,456 km (0.061 R)
• M41: 6,134,709 km (0.098 R)
• M42: 6,379,601 km (0.054 R)
• M43: 6,627,784 km (0.035 R)
• M44: 6,810,144 km (0.112 R)
• M45: 6,901,997 km (0.102 R)
• M46: 7,005,967 km (0.039 R)
• M47: 7,110,237 km (0.12 R)
• M48: 7,285,416 km (0.043 R)
• M49: 7,927,790 km (0.061 R)
• M50: 8,085,167 km (0.072 R)
• M51: 8,280,242 km (0.048 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 967.2

Radius: 9.5

Gravity: 10.72 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.24 AU - 1.72 AU

Year: 1201 Days

Day: 7.6 Hours

Environment

Temp: -181 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 21,641,553 km

• M1: 120,277 km (0.105 R)
• M2: 210,484 km (0.065 R)
• M3: 271,969 km (0.047 R)
• M4: 491,878 km (0.11 R)
• M5: 684,410 km (0.065 R)
• M6: 826,827 km (0.118 R)
• M7: 886,667 km (0.107 R)
• M8: 1,035,217 km (0.098 R)
• M9: 1,217,727 km (0.108 R)
• M10: 1,502,262 km (0.096 R)
• M11: 1,690,905 km (0.114 R)
• M12: 1,817,764 km (0.075 R)
• M13: 1,927,569 km (0.074 R)
• M14: 2,112,172 km (0.104 R)
• M15: 2,175,003 km (0.1 R)
• M16: 2,421,990 km (0.078 R)
• M17: 2,644,142 km (0.06 R)
• M18: 2,734,799 km (0.1 R)
• M19: 2,873,027 km (0.114 R)
• M20: 2,942,889 km (0.069 R)
• M21: 3,192,269 km (0.115 R)
• M22: 3,386,896 km (0.089 R)
• M23: 3,460,947 km (0.114 R)
• M24: 3,535,446 km (0.067 R)
• M25: 3,648,243 km (0.107 R)
• M26: 3,864,711 km (0.098 R)
• M27: 4,270,421 km (0.098 R)
• M28: 4,363,919 km (0.059 R)
• M29: 4,566,625 km (0.064 R)
• M30: 4,731,033 km (0.094 R)
• M31: 4,911,448 km (0.106 R)
• M32: 5,250,287 km (0.065 R)
• M33: 5,611,566 km (0.037 R)
• M34: 5,802,453 km (0.075 R)
• M35: 5,921,084 km (0.108 R)
• M36: 6,130,670 km (0.119 R)
• M37: 6,297,023 km (0.082 R)
• M38: 6,541,765 km (0.102 R)
• M39: 6,789,649 km (0.108 R)
• M40: 6,977,544 km (0.09 R)
• M41: 7,422,747 km (0.072 R)
• M42: 7,632,633 km (0.065 R)
• M43: 7,926,443 km (0.077 R)
• M44: 8,240,599 km (0.072 R)
• M45: 8,307,170 km (0.105 R)
• M46: 8,677,125 km (0.053 R)
• M47: 9,018,059 km (0.069 R)
• M48: 9,450,546 km (0.104 R)
• M49: 9,590,271 km (0.096 R)
• M50: 9,801,353 km (0.081 R)
• M51: 10,049,387 km (0.076 R)
• M52: 10,228,006 km (0.084 R)
• M53: 10,317,616 km (0.118 R)
• M54: 10,497,731 km (0.104 R)
• M55: 10,751,599 km (0.095 R)
• M56: 11,265,468 km (0.067 R)
• M57: 11,432,419 km (0.079 R)
• M58: 11,562,719 km (0.096 R)
• M59: 11,919,061 km (0.073 R)
• M60: 11,994,608 km (0.113 R)
• M61: 12,070,155 km (0.081 R)
• M62: 12,221,996 km (0.117 R)
• M63: 12,355,288 km (0.035 R)
• M64: 12,681,112 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.6

Radius: 14.3

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 1.99 AU - 2.61 AU

Year: 2326 Days

Day: 11.8 Hours

Environment

Temp: -197 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (56)

Outer Limit: 21,641,553 km

• M1: 199,414 km (0.093 R)
• M2: 312,510 km (0.109 R)
• M3: 419,622 km (0.109 R)
• M4: 639,381 km (0.1 R)
• M5: 901,776 km (0.045 R)
• M6: 1,120,638 km (0.101 R)
• M7: 1,237,174 km (0.097 R)
• M8: 1,592,320 km (0.097 R)
• M9: 1,851,124 km (0.107 R)
• M10: 2,068,191 km (0.093 R)
• M11: 2,282,564 km (0.101 R)
• M12: 2,624,096 km (0.118 R)
• M13: 2,807,354 km (0.116 R)
• M14: 3,135,272 km (0.051 R)
• M15: 3,225,779 km (0.113 R)
• M16: 3,596,632 km (0.094 R)
• M17: 3,773,457 km (0.117 R)
• M18: 3,953,423 km (0.051 R)
• M19: 4,122,020 km (0.069 R)
• M20: 4,350,605 km (0.08 R)
• M21: 4,671,942 km (0.03 R)
• M22: 5,046,535 km (0.053 R)
• M23: 5,183,865 km (0.106 R)
• M24: 5,368,768 km (0.084 R)
• M25: 6,441,984 km (0.071 R)
• M26: 6,641,248 km (0.095 R)
• M27: 6,994,748 km (0.083 R)
• M28: 7,337,327 km (0.075 R)
• M29: 7,475,854 km (0.043 R)
• M30: 7,615,280 km (0.113 R)
• M31: 7,985,534 km (0.079 R)
• M32: 8,092,347 km (0.111 R)
• M33: 8,343,672 km (0.095 R)
• M34: 8,561,037 km (0.104 R)
• M35: 8,707,045 km (0.117 R)
• M36: 8,964,503 km (0.087 R)
• M37: 9,168,704 km (0.12 R)
• M38: 9,393,101 km (0.056 R)
• M39: 9,638,441 km (0.092 R)
• M40: 9,866,578 km (0.06 R)
• M41: 10,019,766 km (0.111 R)
• M42: 10,523,163 km (0.092 R)
• M43: 10,660,045 km (0.083 R)
• M44: 10,758,331 km (0.104 R)
• M45: 10,916,007 km (0.056 R)
• M46: 11,074,431 km (0.087 R)
• M47: 11,293,592 km (0.095 R)
• M48: 12,082,422 km (0.12 R)
• M49: 12,287,520 km (0.063 R)
• M50: 12,597,487 km (0.114 R)
• M51: 12,889,053 km (0.081 R)
• M52: 13,098,640 km (0.102 R)
• M53: 13,330,517 km (0.071 R)
• M54: 14,336,862 km (0.083 R)
• M55: 14,510,545 km (0.11 R)
• M56: 14,641,293 km (0.078 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731.8

Radius: 13.7

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 3.3 AU - 3.6 AU

Year: 4273 Days

Day: 11.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (72)

Outer Limit: 21,641,553 km

• M1: 180,116 km (0.103 R)
• M2: 321,187 km (0.085 R)
• M3: 507,436 km (0.103 R)
• M4: 715,377 km (0.063 R)
• M5: 1,018,014 km (0.056 R)
• M6: 1,525,599 km (0.11 R)
• M7: 1,872,816 km (0.062 R)
• M8: 1,988,604 km (0.089 R)
• M9: 2,333,278 km (0.046 R)
• M10: 2,549,597 km (0.104 R)
• M11: 2,905,639 km (0.083 R)
• M12: 3,158,609 km (0.057 R)
• M13: 3,439,255 km (0.116 R)
• M14: 3,896,875 km (0.086 R)
• M15: 4,025,080 km (0.117 R)
• M16: 4,242,147 km (0.058 R)
• M17: 4,396,233 km (0.118 R)
• M18: 5,031,874 km (0.083 R)
• M19: 5,336,754 km (0.083 R)
• M20: 5,672,153 km (0.084 R)
• M21: 5,940,531 km (0.098 R)
• M22: 6,088,633 km (0.041 R)
• M23: 6,540,569 km (0.063 R)
• M24: 6,977,394 km (0.096 R)
• M25: 7,081,664 km (0.084 R)
• M26: 7,583,714 km (0.05 R)
• M27: 7,744,532 km (0.043 R)
• M28: 7,933,773 km (0.114 R)
• M29: 8,069,908 km (0.105 R)
• M30: 8,818,495 km (0.065 R)
• M31: 9,792,677 km (0.117 R)
• M32: 10,026,797 km (0.074 R)
• M33: 10,441,183 km (0.104 R)
• M34: 10,620,551 km (0.094 R)
• M35: 10,921,692 km (0.087 R)
• M36: 12,154,378 km (0.103 R)
• M37: 12,532,861 km (0.103 R)
• M38: 12,723,449 km (0.102 R)
• M39: 13,593,510 km (0.105 R)
• M40: 13,691,347 km (0.117 R)
• M41: 13,789,483 km (0.103 R)
• M42: 14,052,177 km (0.083 R)
• M43: 14,250,244 km (0.102 R)
• M44: 15,085,898 km (0.067 R)
• M45: 15,288,902 km (0.073 R)
• M46: 16,804,628 km (0.078 R)
• M47: 17,191,039 km (0.069 R)
• M48: 17,865,427 km (0.106 R)
• M49: 18,223,863 km (0.108 R)
• M50: 18,331,873 km (0.038 R)
• M51: 18,802,358 km (0.102 R)
• M52: 19,755,296 km (0.082 R)
• M53: 20,911,838 km (0.028 R)
• M54: 21,176,027 km (0.052 R)
• M55: 21,479,412 km (0.109 R)
• M56: 22,052,073 km (0.079 R)
• M57: 22,398,092 km (0.049 R)
• M58: 23,212,354 km (0.106 R)
• M59: 23,368,534 km (0.09 R)
• M60: 23,525,163 km (0.112 R)
• M61: 23,799,974 km (0.054 R)
• M62: 24,511,611 km (0.078 R)
• M63: 24,710,576 km (0.094 R)
• M64: 24,909,990 km (0.115 R)
• M65: 25,029,968 km (0.098 R)
• M66: 25,390,947 km (0.097 R)
• M67: 25,996,370 km (0.116 R)
• M68: 26,158,534 km (0.063 R)
• M69: 26,565,739 km (0.085 R)
• M70: 27,180,288 km (0.103 R)
• M71: 27,592,729 km (0.114 R)
• M72: 27,799,623 km (0.079 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 974.4

Radius: 12.7

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 3.95 AU - 4.03 AU

Year: 5315 Days

Day: 8.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 21,641,553 km

• M1: 159,023 km (0.115 R)
• M2: 369,058 km (0.118 R)
• M3: 637,137 km (0.09 R)
• M4: 1,030,580 km (0.058 R)
• M5: 1,390,363 km (0.108 R)
• M6: 1,513,332 km (0.043 R)
• M7: 1,904,530 km (0.119 R)
• M8: 2,002,517 km (0.104 R)
• M9: 2,203,577 km (0.119 R)
• M10: 2,390,424 km (0.093 R)
• M11: 2,669,724 km (0.094 R)
• M12: 2,802,417 km (0.118 R)
• M13: 3,051,198 km (0.082 R)
• M14: 3,166,837 km (0.078 R)
• M15: 3,378,518 km (0.053 R)
• M16: 3,866,058 km (0.12 R)
• M17: 4,220,754 km (0.086 R)
• M18: 4,612,402 km (0.03 R)
• M19: 4,718,915 km (0.062 R)
• M20: 5,070,769 km (0.025 R)
• M21: 5,208,250 km (0.082 R)
• M22: 6,089,232 km (0.042 R)
• M23: 6,324,100 km (0.107 R)
• M24: 6,561,961 km (0.065 R)
• M25: 6,893,919 km (0.094 R)
• M26: 7,046,658 km (0.111 R)
• M27: 7,763,830 km (0.088 R)
• M28: 7,954,867 km (0.101 R)
• M29: 8,115,086 km (0.062 R)
• M30: 8,734,122 km (0.1 R)
• M31: 9,300,948 km (0.101 R)
• M32: 9,571,870 km (0.09 R)
• M33: 9,708,303 km (0.097 R)
• M34: 9,811,077 km (0.092 R)
• M35: 9,983,115 km (0.118 R)
• M36: 10,540,516 km (0.113 R)
• M37: 11,251,405 km (0.115 R)
• M38: 11,794,895 km (0.078 R)
• M39: 11,978,002 km (0.084 R)
• M40: 12,309,810 km (0.087 R)
• M41: 12,757,108 km (0.1 R)
• M42: 13,821,497 km (0.06 R)
• M43: 13,937,286 km (0.115 R)
• M44: 14,325,492 km (0.097 R)
• M45: 14,717,139 km (0.06 R)
• M46: 14,914,309 km (0.075 R)
• M47: 15,631,482 km (0.086 R)
• M48: 16,075,338 km (0.036 R)
• M49: 16,319,183 km (0.108 R)
• M50: 16,851,602 km (0.096 R)
• M51: 17,182,213 km (0.114 R)
• M52: 18,102,390 km (0.12 R)
• M53: 18,271,435 km (0.114 R)
• M54: 18,653,658 km (0.12 R)
• M55: 20,516,002 km (0.108 R)
• M56: 21,985,202 km (0.04 R)
• M57: 22,527,943 km (0.072 R)
• M58: 23,166,577 km (0.069 R)
• M59: 23,396,060 km (0.089 R)
• M60: 24,368,446 km (0.119 R)
• M61: 24,695,467 km (0.119 R)
• M62: 26,928,963 km (0.059 R)
• M63: 27,996,494 km (0.097 R)
• M64: 28,683,148 km (0.116 R)
• M65: 29,574,003 km (0.113 R)
• M66: 29,723,302 km (0.086 R)
• M67: 30,473,834 km (0.118 R)
• M68: 30,675,043 km (0.038 R)
• M69: 31,636,808 km (0.09 R)
• M70: 31,789,697 km (0.117 R)
• M71: 32,249,411 km (0.081 R)
• M72: 32,505,822 km (0.062 R)
• M73: 32,659,908 km (0.096 R)
• M74: 32,814,443 km (0.118 R)
• M75: 33,072,200 km (0.12 R)
• M76: 33,279,094 km (0.067 R)
• M77: 34,476,475 km (0.104 R)
• M78: 34,791,079 km (0.069 R)
• M79: 34,948,905 km (0.057 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129

Radius: 12.7

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.97 AU - 5.61 AU

Year: 6991 Days

Day: 8.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 21,641,553 km

• M1: 165,605 km (0.043 R)
• M2: 248,033 km (0.079 R)
• M3: 356,193 km (0.113 R)
• M4: 564,433 km (0.098 R)
• M5: 737,966 km (0.107 R)
• M6: 847,472 km (0.12 R)
• M7: 931,097 km (0.115 R)
• M8: 1,107,323 km (0.114 R)
• M9: 1,223,561 km (0.092 R)
• M10: 1,597,855 km (0.09 R)
• M11: 1,895,255 km (0.055 R)
• M12: 2,344,647 km (0.114 R)
• M13: 2,450,862 km (0.094 R)
• M14: 2,747,365 km (0.092 R)
• M15: 3,289,956 km (0.109 R)
• M16: 3,495,653 km (0.065 R)
• M17: 3,794,550 km (0.088 R)
• M18: 4,028,671 km (0.083 R)
• M19: 4,138,326 km (0.099 R)
• M20: 4,249,178 km (0.105 R)
• M21: 4,342,228 km (0.084 R)
• M22: 4,435,876 km (0.074 R)
• M23: 4,549,271 km (0.107 R)
• M24: 4,663,714 km (0.088 R)
• M25: 5,071,667 km (0.104 R)
• M26: 5,450,898 km (0.091 R)
• M27: 5,674,696 km (0.113 R)
• M28: 5,943,075 km (0.119 R)
• M29: 6,926,232 km (0.067 R)
• M30: 7,036,186 km (0.107 R)
• M31: 7,436,809 km (0.043 R)
• M32: 7,776,397 km (0.113 R)
• M33: 8,470,830 km (0.077 R)
• M34: 8,897,034 km (0.091 R)
• M35: 9,427,508 km (0.106 R)
• M36: 9,598,499 km (0.107 R)
• M37: 10,018,121 km (0.1 R)
• M38: 10,267,650 km (0.042 R)
• M39: 10,875,167 km (0.088 R)
• M40: 10,977,641 km (0.053 R)
• M41: 11,312,591 km (0.089 R)
• M42: 11,755,849 km (0.115 R)
• M43: 12,019,142 km (0.114 R)
• M44: 12,151,536 km (0.112 R)
• M45: 12,766,981 km (0.1 R)
• M46: 13,420,126 km (0.12 R)
• M47: 13,723,061 km (0.113 R)
• M48: 13,833,764 km (0.111 R)
• M49: 13,917,090 km (0.081 R)
• M50: 14,056,216 km (0.083 R)
• M51: 14,645,482 km (0.113 R)
• M52: 14,787,151 km (0.112 R)
• M53: 15,185,829 km (0.04 R)
• M54: 15,645,843 km (0.092 R)
• M55: 17,291,719 km (0.063 R)
• M56: 17,531,374 km (0.081 R)
• M57: 17,923,171 km (0.116 R)
• M58: 18,623,439 km (0.112 R)
• M59: 20,239,395 km (0.117 R)
• M60: 20,586,911 km (0.085 R)
• M61: 20,904,657 km (0.112 R)
• M62: 21,352,104 km (0.072 R)
• M63: 21,609,263 km (0.097 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: 206 - 18,885 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit