🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.45 AU - 0.61 AU

Year: 145 Days

Day: 45.4 Hours

Environment

Temp: 163 °C

Axial Tilt: 19.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.43

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.94 AU - 1.34 AU

Year: 459 Days

Day: 42.4 Hours

Environment

Temp: -3 °C

Axial Tilt: 6.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 88,466,741 km

• M1: 330,462 km (0.116 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.96 AU - 3.1 AU

Year: 1516 Days

Day: 44.8 Hours

Environment

Temp: -99 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.98

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 3.45 AU - 4.75 AU

Year: 3128 Days

Day: 15.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 21.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 5.14 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 806.3

Radius: 14.9

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 5.07 AU - 7.27 AU

Year: 5774 Days

Day: 14.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (78)

Outer Limit: 88,466,741 km

• M1: 215,122 km (0.103 R)
• M2: 672,891 km (0.038 R)
• M3: 888,013 km (0.118 R)
• M4: 1,127,818 km (0.094 R)
• M5: 1,223,561 km (0.113 R)
• M6: 1,373,009 km (0.088 R)
• M7: 1,746,555 km (0.118 R)
• M8: 1,974,841 km (0.086 R)
• M9: 2,294,831 km (0.105 R)
• M10: 2,851,036 km (0.087 R)
• M11: 3,007,964 km (0.056 R)
• M12: 3,377,920 km (0.088 R)
• M13: 3,544,422 km (0.069 R)
• M14: 3,985,437 km (0.117 R)
• M15: 4,263,839 km (0.071 R)
• M16: 4,418,373 km (0.116 R)
• M17: 4,627,361 km (0.097 R)
• M18: 6,712,456 km (0.112 R)
• M19: 7,044,564 km (0.089 R)
• M20: 7,228,120 km (0.097 R)
• M21: 7,977,755 km (0.085 R)
• M22: 8,073,348 km (0.104 R)
• M23: 8,169,091 km (0.08 R)
• M24: 8,785,285 km (0.066 R)
• M25: 9,822,596 km (0.11 R)
• M26: 9,925,071 km (0.074 R)
• M27: 10,096,659 km (0.114 R)
• M28: 10,303,853 km (0.06 R)
• M29: 10,407,973 km (0.114 R)
• M30: 10,828,043 km (0.077 R)
• M31: 10,969,264 km (0.094 R)
• M32: 11,218,045 km (0.117 R)
• M33: 11,612,684 km (0.047 R)
• M34: 11,866,253 km (0.11 R)
• M35: 12,011,961 km (0.1 R)
• M36: 13,236,719 km (0.032 R)
• M37: 13,425,811 km (0.117 R)
• M38: 13,577,652 km (0.057 R)
• M39: 13,998,322 km (0.106 R)
• M40: 14,852,525 km (0.057 R)
• M41: 15,524,369 km (0.096 R)
• M42: 16,611,497 km (0.089 R)
• M43: 17,226,195 km (0.108 R)
• M44: 17,557,105 km (0.066 R)
• M45: 17,806,635 km (0.069 R)
• M46: 18,604,739 km (0.07 R)
• M47: 18,774,234 km (0.066 R)
• M48: 19,200,139 km (0.116 R)
• M49: 20,541,134 km (0.108 R)
• M50: 20,804,127 km (0.101 R)
• M51: 20,936,072 km (0.097 R)
• M52: 21,422,265 km (0.098 R)
• M53: 22,091,267 km (0.072 R)
• M54: 22,540,958 km (0.109 R)
• M55: 22,767,001 km (0.098 R)
• M56: 23,084,747 km (0.115 R)
• M57: 23,403,988 km (0.05 R)
• M58: 23,632,873 km (0.028 R)
• M59: 24,000,734 km (0.084 R)
• M60: 24,975,215 km (0.118 R)
• M61: 26,247,096 km (0.027 R)
• M62: 26,962,922 km (0.102 R)
• M63: 27,202,877 km (0.074 R)
• M64: 27,636,711 km (0.066 R)
• M65: 27,927,230 km (0.098 R)
• M66: 28,657,866 km (0.069 R)
• M67: 29,246,982 km (0.08 R)
• M68: 29,889,655 km (0.081 R)
• M69: 30,038,654 km (0.048 R)
• M70: 30,287,435 km (0.105 R)
• M71: 30,737,127 km (0.105 R)
• M72: 31,189,062 km (0.086 R)
• M73: 31,592,527 km (0.115 R)
• M74: 32,455,707 km (0.076 R)
• M75: 32,967,182 km (0.05 R)
• M76: 33,481,200 km (0.064 R)
• M77: 33,946,150 km (0.117 R)
• M78: 34,882,484 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 912.9

Radius: 13.6

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 7.25 AU - 7.35 AU

Year: 7430 Days

Day: 11.3 Hours

Environment

Temp: -175 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (80)

Outer Limit: 88,466,741 km

• M1: 184,305 km (0.088 R)
• M2: 382,073 km (0.113 R)
• M3: 501,153 km (0.065 R)
• M4: 594,352 km (0.083 R)
• M5: 680,222 km (0.046 R)
• M6: 899,981 km (0.081 R)
• M7: 1,036,863 km (0.037 R)
• M8: 1,218,475 km (0.117 R)
• M9: 1,614,759 km (0.058 R)
• M10: 2,378,905 km (0.087 R)
• M11: 3,217,102 km (0.1 R)
• M12: 3,433,421 km (0.09 R)
• M13: 3,626,851 km (0.064 R)
• M14: 4,082,376 km (0.077 R)
• M15: 4,258,154 km (0.098 R)
• M16: 4,892,748 km (0.092 R)
• M17: 5,048,180 km (0.091 R)
• M18: 5,237,122 km (0.103 R)
• M19: 5,589,425 km (0.099 R)
• M20: 6,935,507 km (0.101 R)
• M21: 7,537,040 km (0.098 R)
• M22: 8,526,779 km (0.099 R)
• M23: 9,635,150 km (0.067 R)
• M24: 9,752,435 km (0.09 R)
• M25: 10,466,017 km (0.052 R)
• M26: 10,626,984 km (0.056 R)
• M27: 10,910,472 km (0.093 R)
• M28: 11,278,782 km (0.115 R)
• M29: 11,568,104 km (0.106 R)
• M30: 11,943,595 km (0.101 R)
• M31: 12,153,929 km (0.072 R)
• M32: 12,408,096 km (0.105 R)
• M33: 12,493,068 km (0.06 R)
• M34: 13,050,918 km (0.087 R)
• M35: 13,267,686 km (0.063 R)
• M36: 14,683,031 km (0.094 R)
• M37: 15,546,061 km (0.096 R)
• M38: 17,943,068 km (0.111 R)
• M39: 18,039,409 km (0.098 R)
• M40: 18,280,860 km (0.077 R)
• M41: 18,718,583 km (0.074 R)
• M42: 19,505,019 km (0.07 R)
• M43: 19,902,351 km (0.065 R)
• M44: 20,352,491 km (0.107 R)
• M45: 21,980,266 km (0.107 R)
• M46: 23,018,774 km (0.074 R)
• M47: 23,491,354 km (0.108 R)
• M48: 24,126,397 km (0.088 R)
• M49: 24,232,761 km (0.082 R)
• M50: 24,499,494 km (0.065 R)
• M51: 24,767,124 km (0.086 R)
• M52: 25,089,657 km (0.117 R)
• M53: 25,305,377 km (0.093 R)
• M54: 25,793,066 km (0.09 R)
• M55: 27,496,687 km (0.105 R)
• M56: 28,615,081 km (0.09 R)
• M57: 29,010,019 km (0.059 R)
• M58: 29,406,902 km (0.086 R)
• M59: 29,805,431 km (0.036 R)
• M60: 29,976,721 km (0.108 R)
• M61: 30,723,064 km (0.12 R)
• M62: 31,127,577 km (0.071 R)
• M63: 31,591,929 km (0.08 R)
• M64: 31,883,345 km (0.066 R)
• M65: 32,998,747 km (0.053 R)
• M66: 33,116,929 km (0.098 R)
• M67: 34,785,993 km (0.089 R)
• M68: 36,543,469 km (0.081 R)
• M69: 36,665,690 km (0.086 R)
• M70: 37,033,252 km (0.111 R)
• M71: 37,710,482 km (0.11 R)
• M72: 37,895,833 km (0.111 R)
• M73: 38,143,567 km (0.069 R)
• M74: 38,889,762 km (0.051 R)
• M75: 41,157,217 km (0.113 R)
• M76: 41,348,103 km (0.097 R)
• M77: 41,730,775 km (0.082 R)
• M78: 42,821,343 km (0.093 R)
• M79: 43,014,773 km (0.078 R)
• M80: 43,143,876 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383.6

Radius: 13.2

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 8.09 AU - 10.57 AU

Year: 10736 Days

Day: 10.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 88,466,741 km

• M1: 165,455 km (0.061 R)
• M2: 289,771 km (0.118 R)
• M3: 469,737 km (0.057 R)
• M4: 816,655 km (0.084 R)
• M5: 1,690,007 km (0.087 R)
• M6: 2,165,429 km (0.102 R)
• M7: 2,929,575 km (0.115 R)
• M8: 3,158,909 km (0.111 R)
• M9: 3,315,089 km (0.082 R)
• M10: 3,771,961 km (0.062 R)
• M11: 3,910,189 km (0.088 R)
• M12: 4,134,885 km (0.088 R)
• M13: 4,480,007 km (0.085 R)
• M14: 4,567,821 km (0.062 R)
• M15: 4,656,084 km (0.106 R)
• M16: 4,774,865 km (0.091 R)
• M17: 5,198,526 km (0.094 R)
• M18: 6,017,275 km (0.075 R)
• M19: 6,146,977 km (0.064 R)
• M20: 7,080,018 km (0.051 R)
• M21: 7,354,830 km (0.105 R)
• M22: 7,458,800 km (0.117 R)
• M23: 7,703,243 km (0.115 R)
• M24: 7,844,164 km (0.032 R)
• M25: 8,128,700 km (0.119 R)
• M26: 8,272,164 km (0.071 R)
• M27: 10,097,707 km (0.114 R)
• M28: 10,290,838 km (0.108 R)
• M29: 10,759,378 km (0.062 R)
• M30: 10,877,560 km (0.118 R)
• M31: 11,354,927 km (0.062 R)
• M32: 11,636,470 km (0.063 R)
• M33: 11,757,944 km (0.072 R)
• M34: 12,661,066 km (0.119 R)
• M35: 13,037,006 km (0.034 R)
• M36: 13,163,117 km (0.097 R)
• M37: 13,374,199 km (0.051 R)
• M38: 13,501,507 km (0.082 R)
• M39: 13,629,114 km (0.089 R)
• M40: 14,230,049 km (0.069 R)
• M41: 14,446,816 km (0.083 R)
• M42: 14,533,732 km (0.081 R)
• M43: 14,620,948 km (0.087 R)
• M44: 16,084,464 km (0.075 R)
• M45: 16,673,730 km (0.089 R)
• M46: 17,085,872 km (0.09 R)
• M47: 17,224,100 km (0.09 R)
• M48: 17,594,206 km (0.074 R)
• M49: 18,768,100 km (0.103 R)
• M50: 19,484,375 km (0.119 R)
• M51: 19,870,188 km (0.055 R)
• M52: 20,453,619 km (0.116 R)
• M53: 20,600,375 km (0.067 R)
• M54: 21,736,870 km (0.119 R)
• M55: 22,136,895 km (0.061 R)
• M56: 22,237,424 km (0.116 R)
• M57: 22,337,954 km (0.081 R)
• M58: 22,691,155 km (0.11 R)
• M59: 23,915,912 km (0.12 R)
• M60: 24,277,341 km (0.078 R)
• M61: 24,432,623 km (0.09 R)
• M62: 25,057,643 km (0.115 R)
• M63: 25,529,774 km (0.103 R)
• M64: 25,846,174 km (0.101 R)
• M65: 26,696,338 km (0.091 R)
• M66: 27,286,053 km (0.081 R)
• M67: 27,880,106 km (0.091 R)
• M68: 28,260,384 km (0.105 R)
• M69: 28,423,895 km (0.061 R)
• M70: 28,806,716 km (0.055 R)
• M71: 29,301,286 km (0.059 R)
• M72: 29,965,201 km (0.11 R)
• M73: 31,251,444 km (0.094 R)
• M74: 32,498,641 km (0.114 R)
• M75: 33,704,251 km (0.047 R)
• M76: 34,109,362 km (0.082 R)
• M77: 36,336,874 km (0.091 R)
• M78: 36,633,377 km (0.112 R)
• M79: 37,947,893 km (0.115 R)
• M80: 38,550,474 km (0.049 R)
• M81: 40,132,022 km (0.034 R)
• M82: 40,254,693 km (0.112 R)
• M83: 40,869,241 km (0.054 R)
• M84: 40,992,509 km (0.061 R)
• M85: 41,363,063 km (0.068 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 87

Radius: 5.9

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 12.64 AU - 13.88 AU

Year: 18190 Days

Day: 15.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (64)

Outer Limit: 88,466,741 km

• M1: 90,058 km (0.035 R)
• M2: 223,649 km (0.101 R)
• M3: 573,857 km (0.082 R)
• M4: 626,516 km (0.057 R)
• M5: 694,733 km (0.107 R)
• M6: 2,175,751 km (0.098 R)
• M7: 2,409,573 km (0.111 R)
• M8: 2,786,859 km (0.086 R)
• M9: 3,230,117 km (0.102 R)
• M10: 3,670,234 km (0.095 R)
• M11: 3,745,482 km (0.118 R)
• M12: 4,286,129 km (0.109 R)
• M13: 5,128,215 km (0.082 R)
• M14: 5,639,989 km (0.077 R)
• M15: 6,049,439 km (0.103 R)
• M16: 6,559,268 km (0.111 R)
• M17: 6,681,340 km (0.117 R)
• M18: 7,145,542 km (0.114 R)
• M19: 7,239,490 km (0.096 R)
• M20: 8,301,335 km (0.088 R)
• M21: 8,400,369 km (0.081 R)
• M22: 8,699,565 km (0.111 R)
• M23: 9,002,201 km (0.097 R)
• M24: 10,141,240 km (0.067 R)
• M25: 10,247,005 km (0.09 R)
• M26: 10,424,129 km (0.071 R)
• M27: 10,709,562 km (0.099 R)
• M28: 10,925,432 km (0.067 R)
• M29: 12,779,249 km (0.115 R)
• M30: 13,084,877 km (0.096 R)
• M31: 13,200,067 km (0.114 R)
• M32: 13,742,060 km (0.077 R)
• M33: 13,820,150 km (0.065 R)
• M34: 13,976,630 km (0.115 R)
• M35: 14,768,003 km (0.068 R)
• M36: 14,968,015 km (0.113 R)
• M37: 16,767,378 km (0.072 R)
• M38: 17,947,556 km (0.059 R)
• M39: 18,289,536 km (0.1 R)
• M40: 18,418,490 km (0.109 R)
• M41: 19,023,613 km (0.093 R)
• M42: 19,767,264 km (0.118 R)
• M43: 20,298,037 km (0.059 R)
• M44: 21,147,753 km (0.066 R)
• M45: 21,963,511 km (0.059 R)
• M46: 22,146,170 km (0.084 R)
• M47: 22,375,204 km (0.104 R)
• M48: 22,604,986 km (0.068 R)
• M49: 22,835,666 km (0.102 R)
• M50: 23,625,543 km (0.072 R)
• M51: 24,282,876 km (0.117 R)
• M52: 26,000,260 km (0.114 R)
• M53: 28,549,407 km (0.034 R)
• M54: 28,698,856 km (0.115 R)
• M55: 28,998,650 km (0.087 R)
• M56: 29,399,871 km (0.095 R)
• M57: 29,702,059 km (0.082 R)
• M58: 30,309,426 km (0.118 R)
• M59: 30,411,153 km (0.075 R)
• M60: 31,845,946 km (0.086 R)
• M61: 32,727,676 km (0.103 R)
• M62: 34,250,432 km (0.032 R)
• M63: 34,409,305 km (0.117 R)
• M64: 35,100,448 km (0.064 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 735.3

Radius: 6.4

Gravity: 17.95 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 15.96 AU - 16.12 AU

Year: 24201 Days

Day: 22 Hours

Environment

Temp: -204 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (91)

Outer Limit: 88,466,741 km

• M1: 311,014 km (0.073 R)
• M2: 585,526 km (0.06 R)
• M3: 658,380 km (0.072 R)
• M4: 813,364 km (0.054 R)
• M5: 1,097,600 km (0.102 R)
• M6: 1,219,671 km (0.105 R)
• M7: 1,378,544 km (0.107 R)
• M8: 1,578,258 km (0.11 R)
• M9: 1,858,903 km (0.098 R)
• M10: 2,154,957 km (0.107 R)
• M11: 3,526,620 km (0.097 R)
• M12: 3,985,736 km (0.113 R)
• M13: 5,317,456 km (0.08 R)
• M14: 5,369,217 km (0.076 R)
• M15: 5,473,337 km (0.078 R)
• M16: 5,736,330 km (0.117 R)
• M17: 5,842,694 km (0.118 R)
• M18: 6,220,279 km (0.116 R)
• M19: 6,717,244 km (0.075 R)
• M20: 7,169,777 km (0.077 R)
• M21: 8,343,522 km (0.056 R)
• M22: 8,585,422 km (0.082 R)
• M23: 8,829,566 km (0.089 R)
• M24: 9,138,036 km (0.081 R)
• M25: 9,892,758 km (0.069 R)
• M26: 10,084,542 km (0.025 R)
• M27: 10,732,600 km (0.096 R)
• M28: 12,965,348 km (0.113 R)
• M29: 13,456,777 km (0.118 R)
• M30: 14,458,036 km (0.116 R)
• M31: 14,675,701 km (0.092 R)
• M32: 15,854,981 km (0.106 R)
• M33: 16,380,368 km (0.113 R)
• M34: 16,835,146 km (0.058 R)
• M35: 19,490,359 km (0.093 R)
• M36: 19,891,580 km (0.095 R)
• M37: 23,966,177 km (0.115 R)
• M38: 24,223,785 km (0.116 R)
• M39: 24,915,226 km (0.104 R)
• M40: 26,317,557 km (0.065 R)
• M41: 27,028,146 km (0.077 R)
• M42: 27,925,435 km (0.1 R)
• M43: 29,014,956 km (0.118 R)
• M44: 29,289,618 km (0.052 R)
• M45: 30,025,938 km (0.071 R)
• M46: 30,954,941 km (0.062 R)
• M47: 31,048,290 km (0.083 R)
• M48: 31,799,122 km (0.113 R)
• M49: 32,271,253 km (0.053 R)
• M50: 35,543,556 km (0.057 R)
• M51: 36,427,231 km (0.094 R)
• M52: 38,016,110 km (0.096 R)
• M53: 38,216,272 km (0.117 R)
• M54: 39,526,151 km (0.069 R)
• M55: 40,953,015 km (0.117 R)
• M56: 41,055,640 km (0.104 R)
• M57: 42,916,338 km (0.12 R)
• M58: 43,857,009 km (0.116 R)
• M59: 45,546,119 km (0.036 R)
• M60: 46,612,602 km (0.084 R)
• M61: 48,769,953 km (0.075 R)
• M62: 51,512,232 km (0.083 R)
• M63: 56,116,405 km (0.098 R)
• M64: 56,230,399 km (0.105 R)
• M65: 56,801,264 km (0.072 R)
• M66: 58,756,359 km (0.089 R)
• M67: 65,111,426 km (0.097 R)
• M68: 65,830,842 km (0.069 R)
• M69: 66,432,375 km (0.103 R)
• M70: 66,673,527 km (0.11 R)
• M71: 68,004,948 km (0.118 R)
• M72: 68,491,291 km (0.12 R)
• M73: 68,734,986 km (0.109 R)
• M74: 68,856,758 km (0.108 R)
• M75: 69,712,159 km (0.114 R)
• M76: 69,834,680 km (0.109 R)
• M77: 70,079,871 km (0.116 R)
• M78: 73,542,463 km (0.048 R)
• M79: 74,416,713 km (0.118 R)
• M80: 74,917,866 km (0.105 R)
• M81: 77,567,244 km (0.09 R)
• M82: 77,694,103 km (0.059 R)
• M83: 79,990,580 km (0.102 R)
• M84: 80,247,140 km (0.106 R)
• M85: 80,761,009 km (0.109 R)
• M86: 81,533,981 km (0.114 R)
• M87: 83,087,106 km (0.104 R)
• M88: 85,828,487 km (0.065 R)
• M89: 86,617,167 km (0.059 R)
• M90: 87,672,431 km (0.077 R)
• M91: 88,466,795 km (0.109 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 482 - 18,572 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit