🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.43 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481

Radius: 11.1

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.75 AU - 0.95 AU

Year: 514 Days

Day: 11.9 Hours

Environment

Temp: -150 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (47)

Outer Limit: 11,790,036 km

• M1: 143,764 km (0.032 R)
• M2: 216,319 km (0.091 R)
• M3: 301,141 km (0.117 R)
• M4: 374,144 km (0.046 R)
• M5: 455,675 km (0.115 R)
• M6: 588,368 km (0.118 R)
• M7: 719,566 km (0.06 R)
• M8: 805,884 km (0.092 R)
• M9: 891,903 km (0.057 R)
• M10: 963,111 km (0.119 R)
• M11: 1,059,751 km (0.066 R)
• M12: 1,145,321 km (0.046 R)
• M13: 1,273,377 km (0.081 R)
• M14: 1,354,758 km (0.083 R)
• M15: 1,501,514 km (0.071 R)
• M16: 1,642,734 km (0.083 R)
• M17: 1,811,181 km (0.046 R)
• M18: 1,903,483 km (0.081 R)
• M19: 2,009,249 km (0.084 R)
• M20: 2,087,040 km (0.06 R)
• M21: 2,196,246 km (0.063 R)
• M22: 2,270,148 km (0.112 R)
• M23: 2,370,079 km (0.118 R)
• M24: 2,458,791 km (0.111 R)
• M25: 2,542,266 km (0.112 R)
• M26: 2,851,635 km (0.081 R)
• M27: 2,946,330 km (0.061 R)
• M28: 3,028,160 km (0.041 R)
• M29: 3,243,431 km (0.109 R)
• M30: 3,377,920 km (0.05 R)
• M31: 3,733,215 km (0.111 R)
• M32: 3,844,516 km (0.066 R)
• M33: 4,009,672 km (0.064 R)
• M34: 4,115,886 km (0.105 R)
• M35: 4,316,048 km (0.103 R)
• M36: 4,487,787 km (0.065 R)
• M37: 4,590,411 km (0.087 R)
• M38: 4,661,918 km (0.103 R)
• M39: 4,773,818 km (0.111 R)
• M40: 5,115,050 km (0.106 R)
• M41: 5,197,479 km (0.064 R)
• M42: 5,288,734 km (0.095 R)
• M43: 5,363,832 km (0.091 R)
• M44: 5,498,021 km (0.05 R)
• M45: 5,667,515 km (0.083 R)
• M46: 5,787,194 km (0.066 R)
• M47: 5,873,063 km (0.071 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 817.1

Radius: 15

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.8 AU - 0.94 AU

Year: 532 Days

Day: 8.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 11,790,036 km

• M1: 219,310 km (0.087 R)
• M2: 418,126 km (0.061 R)
• M3: 557,551 km (0.047 R)
• M4: 708,346 km (0.112 R)
• M5: 837,000 km (0.117 R)
• M6: 944,411 km (0.091 R)
• M7: 1,046,736 km (0.084 R)
• M8: 1,186,012 km (0.066 R)
• M9: 1,390,213 km (0.055 R)
• M10: 1,569,581 km (0.056 R)
• M11: 1,700,030 km (0.117 R)
• M12: 1,827,936 km (0.107 R)
• M13: 2,080,158 km (0.112 R)
• M14: 2,189,963 km (0.115 R)
• M15: 2,394,164 km (0.039 R)
• M16: 2,502,324 km (0.104 R)
• M17: 2,641,749 km (0.067 R)
• M18: 2,783,867 km (0.119 R)
• M19: 2,890,231 km (0.099 R)
• M20: 3,083,811 km (0.077 R)
• M21: 3,201,993 km (0.061 R)
• M22: 3,386,297 km (0.109 R)
• M23: 3,508,519 km (0.083 R)
• M24: 3,673,825 km (0.089 R)
• M25: 3,791,109 km (0.087 R)
• M26: 3,909,591 km (0.064 R)
• M27: 4,037,946 km (0.101 R)
• M28: 4,167,946 km (0.061 R)
• M29: 4,307,970 km (0.065 R)
• M30: 4,467,441 km (0.059 R)
• M31: 4,783,392 km (0.082 R)
• M32: 5,060,148 km (0.097 R)
• M33: 5,200,471 km (0.059 R)
• M34: 5,485,156 km (0.109 R)
• M35: 5,658,390 km (0.103 R)
• M36: 5,892,361 km (0.096 R)
• M37: 6,219,232 km (0.118 R)
• M38: 6,359,854 km (0.097 R)
• M39: 6,542,064 km (0.114 R)
• M40: 6,695,253 km (0.04 R)
• M41: 6,818,821 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 649.1

Radius: 14

Gravity: 3.31 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 0.86 AU - 0.94 AU

Year: 560 Days

Day: 5.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (46)

Outer Limit: 11,790,036 km

• M1: 186,399 km (0.109 R)
• M2: 306,676 km (0.082 R)
• M3: 399,426 km (0.051 R)
• M4: 507,286 km (0.105 R)
• M5: 604,076 km (0.12 R)
• M6: 695,780 km (0.103 R)
• M7: 820,544 km (0.035 R)
• M8: 924,814 km (0.053 R)
• M9: 1,013,825 km (0.086 R)
• M10: 1,111,363 km (0.1 R)
• M11: 1,223,262 km (0.103 R)
• M12: 1,327,980 km (0.095 R)
• M13: 1,441,824 km (0.101 R)
• M14: 1,535,473 km (0.08 R)
• M15: 1,735,335 km (0.065 R)
• M16: 1,963,622 km (0.065 R)
• M17: 2,318,019 km (0.094 R)
• M18: 2,457,295 km (0.106 R)
• M19: 2,570,690 km (0.104 R)
• M20: 2,766,214 km (0.044 R)
• M21: 2,854,776 km (0.116 R)
• M22: 3,095,629 km (0.058 R)
• M23: 3,226,377 km (0.116 R)
• M24: 3,351,142 km (0.103 R)
• M25: 3,517,495 km (0.117 R)
• M26: 3,613,686 km (0.047 R)
• M27: 3,825,517 km (0.085 R)
• M28: 3,957,911 km (0.096 R)
• M29: 4,074,896 km (0.101 R)
• M30: 4,176,324 km (0.056 R)
• M31: 4,312,757 km (0.065 R)
• M32: 4,459,363 km (0.055 R)
• M33: 4,669,099 km (0.095 R)
• M34: 4,819,894 km (0.088 R)
• M35: 4,990,136 km (0.083 R)
• M36: 5,263,302 km (0.117 R)
• M37: 5,448,055 km (0.117 R)
• M38: 5,560,104 km (0.066 R)
• M39: 5,672,751 km (0.115 R)
• M40: 5,805,295 km (0.039 R)
• M41: 6,063,800 km (0.073 R)
• M42: 6,277,127 km (0.112 R)
• M43: 6,374,964 km (0.105 R)
• M44: 6,621,950 km (0.114 R)
• M45: 6,801,617 km (0.066 R)
• M46: 6,892,124 km (0.091 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 354.7

Radius: 11.6

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.19 AU - 1.21 AU

Year: 862 Days

Day: 8.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (50)

Outer Limit: 11,790,036 km

• M1: 152,739 km (0.08 R)
• M2: 226,641 km (0.082 R)
• M3: 314,156 km (0.043 R)
• M4: 439,219 km (0.057 R)
• M5: 530,324 km (0.111 R)
• M6: 611,406 km (0.111 R)
• M7: 697,575 km (0.094 R)
• M8: 773,870 km (0.097 R)
• M9: 858,393 km (0.118 R)
• M10: 983,756 km (0.083 R)
• M11: 1,082,041 km (0.115 R)
• M12: 1,195,287 km (0.086 R)
• M13: 1,295,069 km (0.089 R)
• M14: 1,373,308 km (0.062 R)
• M15: 1,459,477 km (0.047 R)
• M16: 1,696,290 km (0.094 R)
• M17: 1,897,649 km (0.103 R)
• M18: 1,980,526 km (0.101 R)
• M19: 2,150,021 km (0.094 R)
• M20: 2,309,642 km (0.106 R)
• M21: 2,541,369 km (0.052 R)
• M22: 2,772,946 km (0.091 R)
• M23: 3,027,711 km (0.032 R)
• M24: 3,117,171 km (0.105 R)
• M25: 3,307,011 km (0.048 R)
• M26: 3,415,918 km (0.061 R)
• M27: 3,500,590 km (0.106 R)
• M28: 3,611,891 km (0.118 R)
• M29: 3,758,946 km (0.055 R)
• M30: 3,970,178 km (0.053 R)
• M31: 4,059,338 km (0.07 R)
• M32: 4,267,130 km (0.099 R)
• M33: 4,349,408 km (0.089 R)
• M34: 4,664,910 km (0.047 R)
• M35: 4,825,429 km (0.055 R)
• M36: 4,987,892 km (0.078 R)
• M37: 5,161,875 km (0.115 R)
• M38: 5,288,883 km (0.108 R)
• M39: 5,486,203 km (0.057 R)
• M40: 5,635,801 km (0.112 R)
• M41: 5,726,307 km (0.083 R)
• M42: 5,980,025 km (0.064 R)
• M43: 6,062,005 km (0.113 R)
• M44: 6,488,209 km (0.075 R)
• M45: 6,678,498 km (0.111 R)
• M46: 6,849,189 km (0.109 R)
• M47: 6,924,287 km (0.119 R)
• M48: 7,118,615 km (0.088 R)
• M49: 7,336,878 km (0.104 R)
• M50: 7,490,814 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 908.1

Radius: 11.1

Gravity: 7.37 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.99 AU - 1.61 AU

Year: 972 Days

Day: 13.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (62)

Outer Limit: 11,790,036 km

• M1: 138,378 km (0.106 R)
• M2: 216,319 km (0.112 R)
• M3: 307,872 km (0.079 R)
• M4: 377,585 km (0.117 R)
• M5: 460,013 km (0.098 R)
• M6: 618,138 km (0.088 R)
• M7: 689,497 km (0.103 R)
• M8: 822,040 km (0.025 R)
• M9: 922,420 km (0.103 R)
• M10: 1,027,289 km (0.069 R)
• M11: 1,114,205 km (0.098 R)
• M12: 1,211,444 km (0.095 R)
• M13: 1,319,453 km (0.057 R)
• M14: 1,479,673 km (0.086 R)
• M15: 1,554,023 km (0.04 R)
• M16: 1,629,570 km (0.058 R)
• M17: 1,855,313 km (0.111 R)
• M18: 1,926,821 km (0.111 R)
• M19: 2,008,501 km (0.073 R)
• M20: 2,119,203 km (0.081 R)
• M21: 2,279,722 km (0.038 R)
• M22: 2,513,244 km (0.103 R)
• M23: 2,582,807 km (0.104 R)
• M24: 2,754,695 km (0.076 R)
• M25: 3,056,584 km (0.062 R)
• M26: 3,249,415 km (0.03 R)
• M27: 3,424,295 km (0.099 R)
• M28: 3,535,297 km (0.098 R)
• M29: 3,681,155 km (0.114 R)
• M30: 3,794,849 km (0.117 R)
• M31: 3,898,221 km (0.093 R)
• M32: 4,441,112 km (0.111 R)
• M33: 4,598,938 km (0.115 R)
• M34: 4,733,875 km (0.107 R)
• M35: 4,907,558 km (0.073 R)
• M36: 5,083,485 km (0.086 R)
• M37: 5,338,400 km (0.114 R)
• M38: 5,623,683 km (0.095 R)
• M39: 5,834,317 km (0.051 R)
• M40: 6,060,958 km (0.113 R)
• M41: 6,155,055 km (0.098 R)
• M42: 6,661,144 km (0.065 R)
• M43: 6,758,383 km (0.041 R)
• M44: 7,024,817 km (0.118 R)
• M45: 7,237,545 km (0.084 R)
• M46: 7,351,838 km (0.112 R)
• M47: 7,510,112 km (0.113 R)
• M48: 7,625,901 km (0.077 R)
• M49: 7,742,288 km (0.095 R)
• M50: 7,947,387 km (0.089 R)
• M51: 8,468,137 km (0.101 R)
• M52: 8,724,997 km (0.118 R)
• M53: 9,138,336 km (0.11 R)
• M54: 9,699,477 km (0.03 R)
• M55: 9,794,173 km (0.085 R)
• M56: 9,889,018 km (0.034 R)
• M57: 9,984,311 km (0.107 R)
• M58: 10,287,846 km (0.111 R)
• M59: 10,643,290 km (0.091 R)
• M60: 10,724,522 km (0.098 R)
• M61: 10,904,189 km (0.11 R)
• M62: 11,117,815 km (0.078 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 709.7

Radius: 10.2

Gravity: 6.82 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 1.24 AU - 1.52 AU

Year: 1063 Days

Day: 5.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (60)

Outer Limit: 11,790,036 km

• M1: 140,921 km (0.084 R)
• M2: 206,595 km (0.064 R)
• M3: 273,315 km (0.067 R)
• M4: 436,975 km (0.1 R)
• M5: 541,095 km (0.097 R)
• M6: 714,779 km (0.105 R)
• M7: 841,488 km (0.09 R)
• M8: 941,719 km (0.073 R)
• M9: 1,025,045 km (0.105 R)
• M10: 1,321,548 km (0.111 R)
• M11: 1,439,730 km (0.063 R)
• M12: 1,545,196 km (0.075 R)
• M13: 1,798,615 km (0.115 R)
• M14: 2,056,372 km (0.069 R)
• M15: 2,120,550 km (0.11 R)
• M16: 2,383,543 km (0.099 R)
• M17: 2,451,012 km (0.079 R)
• M18: 2,568,296 km (0.092 R)
• M19: 2,798,079 km (0.103 R)
• M20: 2,951,716 km (0.075 R)
• M21: 3,024,420 km (0.064 R)
• M22: 3,139,760 km (0.075 R)
• M23: 3,213,961 km (0.069 R)
• M24: 3,288,760 km (0.08 R)
• M25: 3,783,779 km (0.094 R)
• M26: 3,919,763 km (0.114 R)
• M27: 4,231,675 km (0.085 R)
• M28: 4,503,943 km (0.092 R)
• M29: 4,636,188 km (0.106 R)
• M30: 4,720,860 km (0.085 R)
• M31: 4,966,201 km (0.066 R)
• M32: 5,040,551 km (0.051 R)
• M33: 5,115,350 km (0.031 R)
• M34: 5,190,448 km (0.079 R)
• M35: 5,291,127 km (0.053 R)
• M36: 5,520,311 km (0.052 R)
• M37: 5,674,846 km (0.05 R)
• M38: 5,870,220 km (0.104 R)
• M39: 5,948,909 km (0.093 R)
• M40: 6,187,218 km (0.053 R)
• M41: 6,347,886 km (0.098 R)
• M42: 6,442,283 km (0.045 R)
• M43: 6,509,901 km (0.044 R)
• M44: 6,714,401 km (0.101 R)
• M45: 7,284,220 km (0.08 R)
• M46: 7,610,792 km (0.097 R)
• M47: 7,826,213 km (0.092 R)
• M48: 8,014,706 km (0.072 R)
• M49: 8,204,695 km (0.059 R)
• M50: 8,544,432 km (0.077 R)
• M51: 8,918,875 km (0.04 R)
• M52: 9,024,791 km (0.074 R)
• M53: 9,176,633 km (0.118 R)
• M54: 9,622,135 km (0.096 R)
• M55: 9,746,152 km (0.108 R)
• M56: 10,074,519 km (0.048 R)
• M57: 10,200,630 km (0.098 R)
• M58: 10,549,941 km (0.113 R)
• M59: 10,629,976 km (0.109 R)
• M60: 10,758,331 km (0.029 R)

Asteroid Belt

Center: 1.7 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.9

Radius: 10

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 1.62 AU - 2.42 AU

Year: 1883 Days

Day: 13.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (47)

Outer Limit: 11,790,036 km

• M1: 149,299 km (0.092 R)
• M2: 265,686 km (0.11 R)
• M3: 334,202 km (0.071 R)
• M4: 414,835 km (0.072 R)
• M5: 479,760 km (0.06 R)
• M6: 565,779 km (0.092 R)
• M7: 680,670 km (0.068 R)
• M8: 769,980 km (0.097 R)
• M9: 833,559 km (0.12 R)
• M10: 940,522 km (0.097 R)
• M11: 1,046,886 km (0.081 R)
• M12: 1,254,827 km (0.1 R)
• M13: 1,337,106 km (0.051 R)
• M14: 1,427,313 km (0.057 R)
• M15: 1,551,031 km (0.096 R)
• M16: 1,678,339 km (0.091 R)
• M17: 1,822,551 km (0.11 R)
• M18: 1,923,230 km (0.079 R)
• M19: 2,081,355 km (0.096 R)
• M20: 2,215,395 km (0.07 R)
• M21: 2,279,872 km (0.076 R)
• M22: 2,359,607 km (0.114 R)
• M23: 2,529,251 km (0.084 R)
• M24: 2,604,349 km (0.114 R)
• M25: 2,857,469 km (0.097 R)
• M26: 2,983,131 km (0.038 R)
• M27: 3,166,987 km (0.1 R)
• M28: 3,297,137 km (0.052 R)
• M29: 3,379,416 km (0.102 R)
• M30: 3,844,216 km (0.114 R)
• M31: 4,115,138 km (0.093 R)
• M32: 4,221,802 km (0.099 R)
• M33: 4,302,285 km (0.06 R)
• M34: 4,675,681 km (0.101 R)
• M35: 4,852,357 km (0.102 R)
• M36: 4,936,879 km (0.064 R)
• M37: 5,126,270 km (0.039 R)
• M38: 5,308,480 km (0.093 R)
• M39: 5,463,613 km (0.032 R)
• M40: 5,738,724 km (0.088 R)
• M41: 5,908,069 km (0.1 R)
• M42: 6,139,796 km (0.08 R)
• M43: 6,323,203 km (0.116 R)
• M44: 6,539,372 km (0.111 R)
• M45: 6,852,630 km (0.108 R)
• M46: 7,000,582 km (0.077 R)
• M47: 7,202,838 km (0.074 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 216.5

Radius: 9.3

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.81 AU - 2.63 AU

Year: 2170 Days

Day: 12.4 Hours

Environment

Temp: -200 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (58)

Outer Limit: 11,790,036 km

• M1: 119,828 km (0.107 R)
• M2: 202,107 km (0.099 R)
• M3: 350,657 km (0.086 R)
• M4: 425,606 km (0.078 R)
• M5: 512,822 km (0.097 R)
• M6: 637,736 km (0.066 R)
• M7: 793,916 km (0.075 R)
• M8: 855,849 km (0.101 R)
• M9: 970,292 km (0.054 R)
• M10: 1,215,184 km (0.066 R)
• M11: 1,336,807 km (0.051 R)
• M12: 1,771,688 km (0.095 R)
• M13: 2,033,933 km (0.068 R)
• M14: 2,091,827 km (0.103 R)
• M15: 2,199,238 km (0.083 R)
• M16: 2,258,778 km (0.115 R)
• M17: 2,328,790 km (0.099 R)
• M18: 2,481,380 km (0.091 R)
• M19: 2,711,162 km (0.109 R)
• M20: 2,828,746 km (0.107 R)
• M21: 3,113,431 km (0.072 R)
• M22: 3,214,260 km (0.089 R)
• M23: 3,315,986 km (0.104 R)
• M24: 3,557,886 km (0.069 R)
• M25: 3,841,374 km (0.034 R)
• M26: 4,058,889 km (0.116 R)
• M27: 4,243,194 km (0.043 R)
• M28: 4,825,728 km (0.058 R)
• M29: 5,007,938 km (0.054 R)
• M30: 5,446,709 km (0.069 R)
• M31: 5,527,791 km (0.116 R)
• M32: 5,870,220 km (0.084 R)
• M33: 6,064,997 km (0.102 R)
• M34: 6,177,195 km (0.071 R)
• M35: 6,332,627 km (0.099 R)
• M36: 6,618,659 km (0.052 R)
• M37: 7,040,973 km (0.102 R)
• M38: 7,173,816 km (0.045 R)
• M39: 7,397,166 km (0.087 R)
• M40: 7,457,005 km (0.117 R)
• M41: 7,607,650 km (0.076 R)
• M42: 7,698,456 km (0.042 R)
• M43: 7,927,042 km (0.056 R)
• M44: 8,250,771 km (0.104 R)
• M45: 8,736,815 km (0.094 R)
• M46: 8,847,816 km (0.088 R)
• M47: 9,119,486 km (0.103 R)
• M48: 9,296,760 km (0.111 R)
• M49: 9,835,312 km (0.054 R)
• M50: 9,901,285 km (0.056 R)
• M51: 10,100,100 km (0.089 R)
• M52: 10,417,547 km (0.05 R)
• M53: 10,552,185 km (0.077 R)
• M54: 10,857,365 km (0.12 R)
• M55: 11,062,314 km (0.059 R)
• M56: 11,303,166 km (0.066 R)
• M57: 11,650,233 km (0.047 R)
• M58: 11,772,455 km (0.09 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 17,036 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit