🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 580.9

Radius: 12.9

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.78 AU - 0.78 AU

Year: 476 Days

Day: 8.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 75,482,989 km

• M1: 161,416 km (0.073 R)
• M2: 245,640 km (0.104 R)
• M3: 366,066 km (0.055 R)
• M4: 463,903 km (0.108 R)
• M5: 651,798 km (0.045 R)
• M6: 837,449 km (0.108 R)
• M7: 1,005,148 km (0.078 R)
• M8: 1,117,346 km (0.115 R)
• M9: 1,234,033 km (0.109 R)
• M10: 1,334,563 km (0.08 R)
• M11: 1,422,526 km (0.085 R)
• M12: 1,533,827 km (0.045 R)
• M13: 1,681,630 km (0.074 R)
• M14: 1,828,535 km (0.117 R)
• M15: 2,033,484 km (0.097 R)
• M16: 2,135,809 km (0.071 R)
• M17: 2,252,196 km (0.105 R)
• M18: 2,364,694 km (0.105 R)
• M19: 2,478,986 km (0.097 R)
• M20: 2,575,627 km (0.119 R)
• M21: 2,726,571 km (0.092 R)
• M22: 2,893,971 km (0.058 R)
• M23: 2,995,997 km (0.086 R)
• M24: 3,274,398 km (0.058 R)
• M25: 3,561,327 km (0.07 R)
• M26: 3,841,524 km (0.1 R)
• M27: 3,931,582 km (0.117 R)
• M28: 4,167,497 km (0.11 R)
• M29: 4,329,961 km (0.099 R)
• M30: 4,415,980 km (0.101 R)
• M31: 4,685,256 km (0.115 R)
• M32: 4,773,668 km (0.12 R)
• M33: 4,976,523 km (0.061 R)
• M34: 5,124,325 km (0.097 R)
• M35: 5,240,264 km (0.092 R)
• M36: 5,466,605 km (0.113 R)
• M37: 5,644,776 km (0.054 R)
• M38: 5,859,599 km (0.057 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 525.9

Radius: 14.7

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.88 AU - 1.2 AU

Year: 732 Days

Day: 6 Hours

Environment

Temp: -173 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (43)

Outer Limit: 75,482,989 km

• M1: 185,501 km (0.109 R)
• M2: 304,282 km (0.093 R)
• M3: 402,418 km (0.097 R)
• M4: 494,571 km (0.048 R)
• M5: 596,746 km (0.082 R)
• M6: 694,583 km (0.1 R)
• M7: 808,726 km (0.071 R)
• M8: 946,057 km (0.11 R)
• M9: 1,131,409 km (0.09 R)
• M10: 1,270,086 km (0.115 R)
• M11: 1,402,630 km (0.114 R)
• M12: 1,514,678 km (0.115 R)
• M13: 1,636,601 km (0.046 R)
• M14: 1,742,067 km (0.112 R)
• M15: 1,939,237 km (0.094 R)
• M16: 2,136,856 km (0.079 R)
• M17: 2,252,944 km (0.112 R)
• M18: 2,684,085 km (0.1 R)
• M19: 2,994,351 km (0.079 R)
• M20: 3,133,477 km (0.057 R)
• M21: 3,241,187 km (0.105 R)
• M22: 3,367,149 km (0.087 R)
• M23: 3,580,924 km (0.038 R)
• M24: 3,755,056 km (0.118 R)
• M25: 3,976,910 km (0.078 R)
• M26: 4,103,021 km (0.118 R)
• M27: 4,203,251 km (0.106 R)
• M28: 4,294,955 km (0.115 R)
• M29: 4,424,507 km (0.1 R)
• M30: 4,583,529 km (0.079 R)
• M31: 4,792,368 km (0.11 R)
• M32: 4,907,558 km (0.098 R)
• M33: 5,043,243 km (0.105 R)
• M34: 5,679,334 km (0.1 R)
• M35: 5,770,887 km (0.12 R)
• M36: 5,975,986 km (0.1 R)
• M37: 6,121,096 km (0.116 R)
• M38: 6,215,044 km (0.074 R)
• M39: 6,362,098 km (0.108 R)
• M40: 6,756,289 km (0.11 R)
• M41: 7,059,972 km (0.045 R)
• M42: 7,180,548 km (0.081 R)
• M43: 7,346,003 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308

Radius: 13.8

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 1.13 AU - 1.15 AU

Year: 840 Days

Day: 8.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (44)

Outer Limit: 75,482,989 km

• M1: 172,786 km (0.054 R)
• M2: 293,511 km (0.094 R)
• M3: 385,663 km (0.116 R)
• M4: 486,343 km (0.108 R)
• M5: 578,944 km (0.106 R)
• M6: 683,363 km (0.111 R)
• M7: 781,649 km (0.113 R)
• M8: 929,751 km (0.063 R)
• M9: 1,072,318 km (0.119 R)
• M10: 1,228,348 km (0.065 R)
• M11: 1,335,011 km (0.076 R)
• M12: 1,421,479 km (0.115 R)
• M13: 1,510,191 km (0.117 R)
• M14: 1,619,098 km (0.111 R)
• M15: 1,730,997 km (0.102 R)
• M16: 1,832,574 km (0.104 R)
• M17: 1,929,813 km (0.114 R)
• M18: 2,028,996 km (0.052 R)
• M19: 2,157,052 km (0.104 R)
• M20: 2,253,094 km (0.051 R)
• M21: 2,364,843 km (0.104 R)
• M22: 2,471,357 km (0.032 R)
• M23: 2,586,846 km (0.064 R)
• M24: 2,726,421 km (0.114 R)
• M25: 2,823,361 km (0.098 R)
• M26: 2,929,126 km (0.114 R)
• M27: 3,191,671 km (0.096 R)
• M28: 3,381,660 km (0.075 R)
• M29: 3,510,464 km (0.107 R)
• M30: 3,624,607 km (0.052 R)
• M31: 3,773,157 km (0.106 R)
• M32: 3,957,612 km (0.11 R)
• M33: 4,136,381 km (0.067 R)
• M34: 4,379,178 km (0.092 R)
• M35: 4,511,124 km (0.11 R)
• M36: 4,644,415 km (0.083 R)
• M37: 4,752,126 km (0.043 R)
• M38: 4,924,164 km (0.11 R)
• M39: 5,200,321 km (0.034 R)
• M40: 5,377,894 km (0.116 R)
• M41: 6,078,760 km (0.119 R)
• M42: 6,565,402 km (0.081 R)
• M43: 6,696,749 km (0.072 R)
• M44: 6,869,684 km (0.033 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 538.3

Radius: 13.1

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.26 AU - 1.84 AU

Year: 1332 Days

Day: 5.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (53)

Outer Limit: 75,482,989 km

• M1: 219,011 km (0.105 R)
• M2: 321,785 km (0.058 R)
• M3: 449,691 km (0.113 R)
• M4: 560,992 km (0.085 R)
• M5: 659,577 km (0.062 R)
• M6: 771,476 km (0.108 R)
• M7: 863,778 km (0.109 R)
• M8: 988,393 km (0.061 R)
• M9: 1,134,849 km (0.082 R)
• M10: 1,336,507 km (0.106 R)
• M11: 1,653,505 km (0.037 R)
• M12: 1,785,301 km (0.072 R)
• M13: 1,948,363 km (0.112 R)
• M14: 2,069,387 km (0.069 R)
• M15: 2,231,402 km (0.1 R)
• M16: 2,407,927 km (0.092 R)
• M17: 2,528,054 km (0.093 R)
• M18: 2,640,103 km (0.112 R)
• M19: 2,848,343 km (0.104 R)
• M20: 3,018,735 km (0.073 R)
• M21: 3,214,709 km (0.08 R)
• M22: 3,358,771 km (0.095 R)
• M23: 3,539,336 km (0.092 R)
• M24: 3,688,336 km (0.11 R)
• M25: 3,851,098 km (0.097 R)
• M26: 4,256,807 km (0.069 R)
• M27: 4,514,265 km (0.103 R)
• M28: 4,751,677 km (0.119 R)
• M29: 4,916,534 km (0.042 R)
• M30: 5,031,874 km (0.107 R)
• M31: 5,304,292 km (0.084 R)
• M32: 5,608,424 km (0.107 R)
• M33: 5,836,860 km (0.1 R)
• M34: 6,358,657 km (0.085 R)
• M35: 6,724,424 km (0.084 R)
• M36: 7,082,711 km (0.102 R)
• M37: 7,242,332 km (0.078 R)
• M38: 7,329,996 km (0.082 R)
• M39: 7,683,795 km (0.068 R)
• M40: 8,179,563 km (0.114 R)
• M41: 8,347,262 km (0.074 R)
• M42: 8,500,600 km (0.119 R)
• M43: 8,856,792 km (0.09 R)
• M44: 8,950,590 km (0.036 R)
• M45: 9,344,930 km (0.065 R)
• M46: 9,632,308 km (0.069 R)
• M47: 9,728,798 km (0.057 R)
• M48: 9,825,588 km (0.119 R)
• M49: 9,955,140 km (0.03 R)
• M50: 10,117,902 km (0.1 R)
• M51: 10,215,889 km (0.065 R)
• M52: 10,827,744 km (0.083 R)
• M53: 11,315,733 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 994.9

Radius: 13.2

Gravity: 5.71 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 4.6 AU - 6.42 AU

Year: 8928 Days

Day: 5.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (86)

Outer Limit: 75,482,989 km

• M1: 295,605 km (0.105 R)
• M2: 535,710 km (0.116 R)
• M3: 675,285 km (0.068 R)
• M4: 883,076 km (0.077 R)
• M5: 1,194,539 km (0.052 R)
• M6: 1,342,042 km (0.114 R)
• M7: 1,451,399 km (0.12 R)
• M8: 2,044,405 km (0.08 R)
• M9: 2,146,131 km (0.108 R)
• M10: 2,328,192 km (0.031 R)
• M11: 2,434,556 km (0.096 R)
• M12: 2,905,340 km (0.078 R)
• M13: 3,020,381 km (0.077 R)
• M14: 4,220,754 km (0.073 R)
• M15: 4,384,564 km (0.071 R)
• M16: 4,854,451 km (0.047 R)
• M17: 5,340,644 km (0.095 R)
• M18: 5,661,531 km (0.111 R)
• M19: 6,700,040 km (0.044 R)
• M20: 6,814,781 km (0.096 R)
• M21: 7,280,480 km (0.079 R)
• M22: 7,398,512 km (0.049 R)
• M23: 8,614,145 km (0.118 R)
• M24: 9,244,999 km (0.11 R)
• M25: 9,330,270 km (0.079 R)
• M26: 9,630,812 km (0.089 R)
• M27: 9,847,429 km (0.057 R)
• M28: 10,374,014 km (0.098 R)
• M29: 11,500,336 km (0.12 R)
• M30: 11,684,042 km (0.106 R)
• M31: 11,961,696 km (0.104 R)
• M32: 12,241,444 km (0.087 R)
• M33: 13,093,853 km (0.088 R)
• M34: 14,014,179 km (0.064 R)
• M35: 14,112,315 km (0.045 R)
• M36: 14,656,103 km (0.111 R)
• M37: 15,156,359 km (0.107 R)
• M38: 15,257,038 km (0.08 R)
• M39: 15,662,299 km (0.103 R)
• M40: 16,225,086 km (0.046 R)
• M41: 17,160,521 km (0.102 R)
• M42: 17,581,939 km (0.113 R)
• M43: 17,793,919 km (0.068 R)
• M44: 18,113,460 km (0.11 R)
• M45: 18,273,978 km (0.08 R)
• M46: 19,356,169 km (0.106 R)
• M47: 19,629,933 km (0.071 R)
• M48: 19,849,842 km (0.069 R)
• M49: 20,181,351 km (0.089 R)
• M50: 23,946,730 km (0.114 R)
• M51: 24,064,164 km (0.035 R)
• M52: 24,181,748 km (0.111 R)
• M53: 24,535,846 km (0.095 R)
• M54: 25,189,439 km (0.097 R)
• M55: 25,548,324 km (0.119 R)
• M56: 26,513,829 km (0.075 R)
• M57: 27,062,105 km (0.087 R)
• M58: 29,229,778 km (0.078 R)
• M59: 29,733,175 km (0.084 R)
• M60: 29,985,846 km (0.111 R)
• M61: 30,112,555 km (0.112 R)
• M62: 31,260,121 km (0.09 R)
• M63: 31,645,934 km (0.096 R)
• M64: 32,033,242 km (0.1 R)
• M65: 33,335,791 km (0.061 R)
• M66: 34,125,518 km (0.084 R)
• M67: 34,854,957 km (0.108 R)
• M68: 35,522,463 km (0.117 R)
• M69: 36,059,520 km (0.097 R)
• M70: 37,073,793 km (0.107 R)
• M71: 37,550,262 km (0.108 R)
• M72: 37,686,845 km (0.105 R)
• M73: 38,647,264 km (0.092 R)
• M74: 38,785,043 km (0.105 R)
• M75: 38,992,087 km (0.086 R)
• M76: 39,130,315 km (0.07 R)
• M77: 42,568,373 km (0.119 R)
• M78: 44,431,615 km (0.113 R)
• M79: 45,300,629 km (0.039 R)
• M80: 45,883,013 km (0.037 R)
• M81: 47,644,977 km (0.101 R)
• M82: 48,163,184 km (0.106 R)
• M83: 48,311,585 km (0.105 R)
• M84: 48,757,536 km (0.072 R)
• M85: 49,354,432 km (0.118 R)
• M86: 50,329,511 km (0.065 R)

Asteroid Belt

Center: 6.5 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Ice Giant

Semi-Major Axis: 7.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 86

Radius: 7.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 7.36 AU - 7.6 AU

Year: 14121 Days

Day: 18.2 Hours

Environment

Temp: -238 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (63)

Outer Limit: 75,482,989 km

• M1: 321,336 km (0.118 R)
• M2: 465,698 km (0.088 R)
• M3: 585,825 km (0.094 R)
• M4: 1,318,855 km (0.067 R)
• M5: 2,283,761 km (0.052 R)
• M6: 2,611,829 km (0.072 R)
• M7: 3,441,349 km (0.104 R)
• M8: 3,817,139 km (0.1 R)
• M9: 3,998,452 km (0.096 R)
• M10: 4,205,944 km (0.113 R)
• M11: 5,095,603 km (0.105 R)
• M12: 5,295,465 km (0.118 R)
• M13: 5,396,444 km (0.082 R)
• M14: 5,549,034 km (0.055 R)
• M15: 5,600,196 km (0.075 R)
• M16: 6,147,126 km (0.097 R)
• M17: 6,467,266 km (0.078 R)
• M18: 6,820,317 km (0.088 R)
• M19: 7,263,425 km (0.092 R)
• M20: 7,545,118 km (0.111 R)
• M21: 8,206,640 km (0.105 R)
• M22: 8,382,268 km (0.082 R)
• M23: 8,588,713 km (0.051 R)
• M24: 8,886,712 km (0.089 R)
• M25: 8,976,620 km (0.085 R)
• M26: 9,036,908 km (0.115 R)
• M27: 9,646,220 km (0.097 R)
• M28: 9,831,572 km (0.089 R)
• M29: 10,080,653 km (0.116 R)
• M30: 10,205,866 km (0.101 R)
• M31: 10,808,147 km (0.068 R)
• M32: 11,259,334 km (0.081 R)
• M33: 11,389,335 km (0.054 R)
• M34: 12,380,421 km (0.071 R)
• M35: 13,090,562 km (0.067 R)
• M36: 14,162,730 km (0.075 R)
• M37: 14,479,279 km (0.091 R)
• M38: 14,585,344 km (0.091 R)
• M39: 14,940,788 km (0.051 R)
• M40: 15,406,935 km (0.084 R)
• M41: 15,479,191 km (0.089 R)
• M42: 15,623,852 km (0.12 R)
• M43: 16,390,541 km (0.114 R)
• M44: 16,760,048 km (0.099 R)
• M45: 17,733,332 km (0.052 R)
• M46: 18,571,229 km (0.104 R)
• M47: 18,724,866 km (0.088 R)
• M48: 18,801,909 km (0.116 R)
• M49: 19,305,156 km (0.034 R)
• M50: 19,499,933 km (0.115 R)
• M51: 19,656,113 km (0.12 R)
• M52: 19,812,892 km (0.064 R)
• M53: 19,891,281 km (0.109 R)
• M54: 21,121,125 km (0.105 R)
• M55: 22,334,663 km (0.062 R)
• M56: 22,580,003 km (0.114 R)
• M57: 23,156,105 km (0.092 R)
• M58: 25,082,776 km (0.12 R)
• M59: 25,210,233 km (0.062 R)
• M60: 25,551,167 km (0.098 R)
• M61: 26,929,861 km (0.057 R)
• M62: 29,714,176 km (0.083 R)
• M63: 30,164,466 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 937.2

Radius: 6.6

Gravity: 21.52 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 8.24 AU - 8.62 AU

Year: 16895 Days

Day: 17.2 Hours

Environment

Temp: -238 °C

Axial Tilt: 42.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (93)

Outer Limit: 75,482,989 km

• M1: 193,879 km (0.092 R)
• M2: 295,306 km (0.087 R)
• M3: 380,128 km (0.059 R)
• M4: 618,737 km (0.114 R)
• M5: 1,302,848 km (0.113 R)
• M6: 1,630,766 km (0.105 R)
• M7: 1,756,279 km (0.092 R)
• M8: 1,820,307 km (0.111 R)
• M9: 1,917,695 km (0.095 R)
• M10: 2,084,048 km (0.112 R)
• M11: 2,466,420 km (0.117 R)
• M12: 2,610,932 km (0.119 R)
• M13: 2,908,332 km (0.094 R)
• M14: 3,061,072 km (0.107 R)
• M15: 3,494,606 km (0.099 R)
• M16: 4,159,419 km (0.073 R)
• M17: 4,418,672 km (0.092 R)
• M18: 5,044,141 km (0.095 R)
• M19: 5,936,492 km (0.118 R)
• M20: 6,475,194 km (0.114 R)
• M21: 6,574,826 km (0.119 R)
• M22: 6,775,587 km (0.09 R)
• M23: 7,131,929 km (0.097 R)
• M24: 7,546,465 km (0.116 R)
• M25: 7,915,672 km (0.097 R)
• M26: 7,968,929 km (0.076 R)
• M27: 9,114,101 km (0.072 R)
• M28: 9,394,297 km (0.104 R)
• M29: 9,905,773 km (0.072 R)
• M30: 9,963,218 km (0.114 R)
• M31: 11,675,216 km (0.081 R)
• M32: 11,857,426 km (0.095 R)
• M33: 12,101,869 km (0.099 R)
• M34: 13,667,112 km (0.098 R)
• M35: 14,702,030 km (0.038 R)
• M36: 15,427,879 km (0.109 R)
• M37: 15,627,891 km (0.103 R)
• M38: 16,846,067 km (0.035 R)
• M39: 17,258,807 km (0.065 R)
• M40: 20,459,154 km (0.039 R)
• M41: 21,342,829 km (0.117 R)
• M42: 21,565,730 km (0.111 R)
• M43: 22,314,318 km (0.055 R)
• M44: 23,836,626 km (0.071 R)
• M45: 25,313,755 km (0.063 R)
• M46: 26,341,492 km (0.047 R)
• M47: 27,221,577 km (0.057 R)
• M48: 29,010,617 km (0.065 R)
• M49: 30,669,807 km (0.032 R)
• M50: 31,089,429 km (0.11 R)
• M51: 31,510,847 km (0.118 R)
• M52: 31,934,209 km (0.115 R)
• M53: 33,043,776 km (0.115 R)
• M54: 34,079,293 km (0.111 R)
• M55: 34,950,251 km (0.1 R)
• M56: 35,037,616 km (0.085 R)
• M57: 36,625,149 km (0.105 R)
• M58: 38,868,519 km (0.096 R)
• M59: 40,971,266 km (0.087 R)
• M60: 41,804,227 km (0.058 R)
• M61: 43,580,852 km (0.107 R)
• M62: 44,146,930 km (0.117 R)
• M63: 44,620,557 km (0.12 R)
• M64: 44,810,546 km (0.096 R)
• M65: 45,191,123 km (0.06 R)
• M66: 46,628,160 km (0.057 R)
• M67: 47,497,623 km (0.079 R)
• M68: 49,645,250 km (0.079 R)
• M69: 51,824,442 km (0.106 R)
• M70: 53,227,371 km (0.116 R)
• M71: 53,428,730 km (0.088 R)
• M72: 53,731,366 km (0.09 R)
• M73: 55,354,952 km (0.05 R)
• M74: 55,456,978 km (0.1 R)
• M75: 55,968,004 km (0.064 R)
• M76: 56,583,300 km (0.12 R)
• M77: 57,820,475 km (0.094 R)
• M78: 58,442,503 km (0.104 R)
• M79: 60,741,822 km (0.12 R)
• M80: 61,057,623 km (0.102 R)
• M81: 61,163,089 km (0.093 R)
• M82: 61,479,639 km (0.099 R)
• M83: 62,964,248 km (0.108 R)
• M84: 65,428,574 km (0.068 R)
• M85: 65,860,463 km (0.087 R)
• M86: 66,835,392 km (0.079 R)
• M87: 67,706,052 km (0.052 R)
• M88: 68,361,589 km (0.054 R)
• M89: 68,471,095 km (0.105 R)
• M90: 70,672,278 km (0.107 R)
• M91: 73,120,447 km (0.105 R)
• M92: 73,680,691 km (0.075 R)
• M93: 73,792,890 km (0.09 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 226 - 17,814 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit