🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.33

Radius: 0.64

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 1.86 AU - 1.98 AU

Year: 944 Days

Day: 13 Hours

Environment

Temp: -46 °C

Axial Tilt: 28.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,265,360 km

• M1: 296,503 km (0.114 R)

Planet 2 - Terrestrial

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.07

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 1.91 AU - 2.29 AU

Year: 1080 Days

Day: 13.7 Hours

Environment

Temp: -52 °C

Axial Tilt: 20.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 3.84 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.07

Radius: 1.03

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 3.62 AU - 4.06 AU

Year: 2670 Days

Day: 37.8 Hours

Environment

Temp: -104 °C

Axial Tilt: 43.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 4.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.13

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 3.43 AU - 4.59 AU

Year: 2849 Days

Day: 17.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 31.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,265,360 km

• M1: 593,904 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 589.6

Radius: 13.1

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 4.64 AU - 7.3 AU

Year: 5175 Days

Day: 8.4 Hours

Environment

Temp: -146 °C

Axial Tilt: 49.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (75)

Outer Limit: 46,265,360 km

• M1: 165,455 km (0.116 R)
• M2: 285,433 km (0.054 R)
• M3: 423,512 km (0.096 R)
• M4: 581,786 km (0.118 R)
• M5: 681,119 km (0.088 R)
• M6: 763,248 km (0.102 R)
• M7: 991,834 km (0.106 R)
• M8: 1,087,128 km (0.093 R)
• M9: 1,258,417 km (0.102 R)
• M10: 1,377,796 km (0.106 R)
• M11: 1,628,672 km (0.11 R)
• M12: 1,860,848 km (0.041 R)
• M13: 2,015,831 km (0.119 R)
• M14: 2,265,959 km (0.045 R)
• M15: 2,376,213 km (0.075 R)
• M16: 2,564,257 km (0.099 R)
• M17: 2,796,583 km (0.095 R)
• M18: 3,137,666 km (0.094 R)
• M19: 3,471,119 km (0.05 R)
• M20: 3,663,801 km (0.102 R)
• M21: 3,794,251 km (0.061 R)
• M22: 4,127,405 km (0.093 R)
• M23: 4,493,172 km (0.103 R)
• M24: 4,989,388 km (0.111 R)
• M25: 5,354,557 km (0.034 R)
• M26: 5,753,833 km (0.105 R)
• M27: 6,214,595 km (0.116 R)
• M28: 7,253,702 km (0.119 R)
• M29: 7,863,762 km (0.083 R)
• M30: 8,089,654 km (0.109 R)
• M31: 8,432,682 km (0.112 R)
• M32: 8,692,983 km (0.08 R)
• M33: 9,490,040 km (0.036 R)
• M34: 9,640,236 km (0.116 R)
• M35: 9,760,962 km (0.106 R)
• M36: 10,372,219 km (0.05 R)
• M37: 10,464,969 km (0.06 R)
• M38: 11,376,020 km (0.041 R)
• M39: 11,921,903 km (0.076 R)
• M40: 12,084,067 km (0.106 R)
• M41: 12,476,313 km (0.076 R)
• M42: 12,674,081 km (0.09 R)
• M43: 13,340,689 km (0.062 R)
• M44: 14,121,291 km (0.091 R)
• M45: 14,638,451 km (0.081 R)
• M46: 15,126,738 km (0.05 R)
• M47: 15,869,342 km (0.113 R)
• M48: 16,370,944 km (0.067 R)
• M49: 16,515,156 km (0.114 R)
• M50: 17,023,490 km (0.074 R)
• M51: 17,500,258 km (0.09 R)
• M52: 18,429,261 km (0.06 R)
• M53: 18,880,897 km (0.119 R)
• M54: 19,488,713 km (0.085 R)
• M55: 20,296,242 km (0.037 R)
• M56: 20,684,748 km (0.114 R)
• M57: 21,390,102 km (0.104 R)
• M58: 21,508,434 km (0.108 R)
• M59: 21,626,915 km (0.095 R)
• M60: 21,864,626 km (0.119 R)
• M61: 22,342,741 km (0.077 R)
• M62: 22,502,961 km (0.108 R)
• M63: 22,784,055 km (0.029 R)
• M64: 23,147,279 km (0.057 R)
• M65: 23,309,443 km (0.106 R)
• M66: 23,675,359 km (0.107 R)
• M67: 24,289,608 km (0.111 R)
• M68: 24,371,887 km (0.054 R)
• M69: 24,578,033 km (0.065 R)
• M70: 24,992,119 km (0.096 R)
• M71: 25,450,188 km (0.096 R)
• M72: 25,785,138 km (0.068 R)
• M73: 27,911,372 km (0.094 R)
• M74: 28,300,177 km (0.107 R)
• M75: 29,257,753 km (0.053 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 401.6

Radius: 12.2

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 5.43 AU - 8.69 AU

Year: 6655 Days

Day: 10.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (65)

Outer Limit: 46,265,360 km

• M1: 271,969 km (0.06 R)
• M2: 502,200 km (0.106 R)
• M3: 827,426 km (0.1 R)
• M4: 1,070,971 km (0.062 R)
• M5: 1,416,542 km (0.12 R)
• M6: 1,745,658 km (0.037 R)
• M7: 2,099,157 km (0.095 R)
• M8: 2,514,291 km (0.09 R)
• M9: 2,711,611 km (0.061 R)
• M10: 2,832,486 km (0.072 R)
• M11: 2,975,950 km (0.105 R)
• M12: 3,163,995 km (0.077 R)
• M13: 3,551,902 km (0.104 R)
• M14: 3,706,886 km (0.117 R)
• M15: 3,841,673 km (0.117 R)
• M16: 4,162,411 km (0.041 R)
• M17: 4,539,697 km (0.084 R)
• M18: 4,854,601 km (0.035 R)
• M19: 5,051,920 km (0.088 R)
• M20: 5,251,783 km (0.115 R)
• M21: 5,378,193 km (0.055 R)
• M22: 5,867,528 km (0.098 R)
• M23: 5,946,216 km (0.099 R)
• M24: 6,533,388 km (0.065 R)
• M25: 7,167,084 km (0.098 R)
• M26: 7,591,045 km (0.111 R)
• M27: 7,734,210 km (0.085 R)
• M28: 9,214,780 km (0.105 R)
• M29: 9,613,907 km (0.083 R)
• M30: 11,299,127 km (0.088 R)
• M31: 11,660,406 km (0.096 R)
• M32: 12,058,636 km (0.087 R)
• M33: 12,800,641 km (0.082 R)
• M34: 12,902,966 km (0.063 R)
• M35: 14,081,648 km (0.027 R)
• M36: 14,328,634 km (0.119 R)
• M37: 15,366,992 km (0.086 R)
• M38: 15,621,309 km (0.058 R)
• M39: 15,803,818 km (0.105 R)
• M40: 15,950,424 km (0.093 R)
• M41: 16,170,931 km (0.113 R)
• M42: 16,578,137 km (0.097 R)
• M43: 16,764,237 km (0.081 R)
• M44: 17,402,421 km (0.079 R)
• M45: 18,316,913 km (0.075 R)
• M46: 19,364,397 km (0.11 R)
• M47: 19,757,241 km (0.102 R)
• M48: 20,431,180 km (0.081 R)
• M49: 20,511,065 km (0.101 R)
• M50: 20,911,538 km (0.071 R)
• M51: 21,072,506 km (0.105 R)
• M52: 21,598,342 km (0.061 R)
• M53: 22,787,047 km (0.113 R)
• M54: 23,160,144 km (0.117 R)
• M55: 23,243,470 km (0.101 R)
• M56: 23,535,485 km (0.077 R)
• M57: 23,660,998 km (0.115 R)
• M58: 24,207,479 km (0.079 R)
• M59: 24,673,177 km (0.063 R)
• M60: 24,885,905 km (0.106 R)
• M61: 26,174,691 km (0.055 R)
• M62: 26,304,841 km (0.097 R)
• M63: 28,326,207 km (0.092 R)
• M64: 29,852,255 km (0.111 R)
• M65: 29,942,762 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 783.1

Radius: 11.3

Gravity: 6.13 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 6.72 AU - 7.4 AU

Year: 6655 Days

Day: 5.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 0 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (89)

Outer Limit: 46,265,360 km

• M1: 143,913 km (0.117 R)
• M2: 300,093 km (0.117 R)
• M3: 379,231 km (0.113 R)
• M4: 578,944 km (0.068 R)
• M5: 658,530 km (0.076 R)
• M6: 845,527 km (0.069 R)
• M7: 1,219,971 km (0.114 R)
• M8: 1,362,238 km (0.111 R)
• M9: 1,624,932 km (0.107 R)
• M10: 1,722,769 km (0.078 R)
• M11: 1,802,505 km (0.077 R)
• M12: 1,904,082 km (0.11 R)
• M13: 2,134,462 km (0.064 R)
• M14: 2,553,785 km (0.116 R)
• M15: 2,832,037 km (0.078 R)
• M16: 2,950,968 km (0.068 R)
• M17: 3,169,231 km (0.049 R)
• M18: 3,292,948 km (0.086 R)
• M19: 3,751,316 km (0.096 R)
• M20: 3,829,705 km (0.06 R)
• M21: 3,935,172 km (0.067 R)
• M22: 4,615,842 km (0.115 R)
• M23: 4,813,012 km (0.096 R)
• M24: 5,128,664 km (0.043 R)
• M25: 5,245,051 km (0.108 R)
• M26: 5,391,956 km (0.102 R)
• M27: 5,719,725 km (0.112 R)
• M28: 5,901,337 km (0.112 R)
• M29: 6,869,833 km (0.119 R)
• M30: 7,454,761 km (0.108 R)
• M31: 7,753,358 km (0.059 R)
• M32: 8,022,036 km (0.106 R)
• M33: 8,123,613 km (0.089 R)
• M34: 8,327,964 km (0.093 R)
• M35: 8,499,553 km (0.107 R)
• M36: 8,776,608 km (0.103 R)
• M37: 8,916,332 km (0.059 R)
• M38: 9,197,875 km (0.096 R)
• M39: 9,304,240 km (0.071 R)
• M40: 9,482,411 km (0.081 R)
• M41: 9,697,682 km (0.086 R)
• M42: 9,914,599 km (0.076 R)
• M43: 9,987,303 km (0.058 R)
• M44: 10,279,767 km (0.09 R)
• M45: 11,098,666 km (0.061 R)
• M46: 11,707,380 km (0.062 R)
• M47: 12,015,701 km (0.085 R)
• M48: 12,170,984 km (0.086 R)
• M49: 12,838,190 km (0.094 R)
• M50: 13,116,293 km (0.049 R)
• M51: 13,276,213 km (0.107 R)
• M52: 14,661,040 km (0.115 R)
• M53: 15,244,621 km (0.119 R)
• M54: 15,497,143 km (0.073 R)
• M55: 16,520,691 km (0.104 R)
• M56: 16,779,944 km (0.117 R)
• M57: 17,521,950 km (0.026 R)
• M58: 17,698,176 km (0.031 R)
• M59: 18,007,844 km (0.074 R)
• M60: 18,096,705 km (0.087 R)
• M61: 18,453,496 km (0.119 R)
• M62: 18,857,560 km (0.073 R)
• M63: 18,992,946 km (0.105 R)
• M64: 19,219,287 km (0.088 R)
• M65: 19,309,944 km (0.087 R)
• M66: 19,537,632 km (0.11 R)
• M67: 19,674,514 km (0.049 R)
• M68: 20,225,632 km (0.072 R)
• M69: 20,317,934 km (0.048 R)
• M70: 23,394,863 km (0.119 R)
• M71: 23,588,891 km (0.112 R)
• M72: 24,125,349 km (0.087 R)
• M73: 26,613,910 km (0.09 R)
• M74: 26,715,188 km (0.116 R)
• M75: 27,529,599 km (0.09 R)
• M76: 29,287,523 km (0.107 R)
• M77: 29,496,661 km (0.111 R)
• M78: 30,074,558 km (0.064 R)
• M79: 30,338,448 km (0.12 R)
• M80: 30,444,214 km (0.071 R)
• M81: 30,709,152 km (0.061 R)
• M82: 32,153,220 km (0.082 R)
• M83: 32,856,330 km (0.08 R)
• M84: 36,335,228 km (0.066 R)
• M85: 36,447,576 km (0.049 R)
• M86: 37,067,510 km (0.102 R)
• M87: 37,237,154 km (0.106 R)
• M88: 37,747,881 km (0.056 R)
• M89: 38,203,706 km (0.045 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 973.9

Radius: 8

Gravity: 15.22 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 8.23 AU - 10.57 AU

Year: 10224 Days

Day: 9.1 Hours

Environment

Temp: -165 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 46,265,360 km

• M1: 289,921 km (0.086 R)
• M2: 369,208 km (0.101 R)
• M3: 746,942 km (0.061 R)
• M4: 882,029 km (0.048 R)
• M5: 1,500,616 km (0.117 R)
• M6: 1,748,949 km (0.087 R)
• M7: 1,826,141 km (0.05 R)
• M8: 2,600,011 km (0.03 R)
• M9: 3,528,715 km (0.068 R)
• M10: 3,792,306 km (0.116 R)
• M11: 4,234,517 km (0.116 R)
• M12: 4,304,080 km (0.116 R)
• M13: 4,444,254 km (0.111 R)
• M14: 4,550,318 km (0.063 R)
• M15: 4,729,088 km (0.083 R)
• M16: 5,657,043 km (0.102 R)
• M17: 6,004,859 km (0.1 R)
• M18: 6,200,981 km (0.105 R)
• M19: 7,505,924 km (0.117 R)
• M20: 9,615,104 km (0.032 R)
• M21: 10,309,537 km (0.062 R)
• M22: 10,876,663 km (0.064 R)
• M23: 10,972,106 km (0.072 R)
• M24: 13,092,207 km (0.115 R)
• M25: 13,143,071 km (0.059 R)
• M26: 13,551,622 km (0.086 R)
• M27: 13,706,007 km (0.044 R)
• M28: 14,538,968 km (0.106 R)
• M29: 15,388,086 km (0.1 R)
• M30: 15,710,768 km (0.104 R)
• M31: 16,144,453 km (0.103 R)
• M32: 17,245,643 km (0.116 R)
• M33: 17,692,940 km (0.065 R)
• M34: 18,770,494 km (0.077 R)
• M35: 20,810,410 km (0.073 R)
• M36: 21,226,891 km (0.032 R)
• M37: 21,286,580 km (0.113 R)
• M38: 22,797,369 km (0.104 R)
• M39: 23,288,200 km (0.048 R)
• M40: 24,467,629 km (0.037 R)
• M41: 25,096,240 km (0.102 R)
• M42: 25,666,507 km (0.118 R)
• M43: 26,949,009 km (0.094 R)
• M44: 29,110,250 km (0.116 R)
• M45: 29,176,671 km (0.064 R)
• M46: 29,642,519 km (0.076 R)
• M47: 30,716,781 km (0.079 R)
• M48: 30,852,018 km (0.095 R)
• M49: 30,919,636 km (0.059 R)
• M50: 31,667,176 km (0.115 R)
• M51: 32,009,008 km (0.12 R)
• M52: 32,489,516 km (0.082 R)
• M53: 33,945,253 km (0.055 R)
• M54: 34,505,497 km (0.062 R)
• M55: 34,575,808 km (0.115 R)
• M56: 34,645,969 km (0.085 R)
• M57: 34,786,741 km (0.108 R)
• M58: 35,210,103 km (0.106 R)
• M59: 35,777,079 km (0.119 R)
• M60: 35,919,346 km (0.103 R)
• M61: 36,133,122 km (0.082 R)
• M62: 36,204,330 km (0.114 R)
• M63: 37,135,876 km (0.11 R)
• M64: 37,207,982 km (0.092 R)
• M65: 37,496,407 km (0.067 R)
• M66: 37,568,513 km (0.118 R)
• M67: 38,147,906 km (0.12 R)
• M68: 38,438,724 km (0.076 R)
• M69: 40,272,944 km (0.062 R)
• M70: 40,717,399 km (0.036 R)
• M71: 41,387,149 km (0.063 R)
• M72: 41,686,045 km (0.081 R)
• M73: 42,285,783 km (0.042 R)
• M74: 42,812,966 km (0.108 R)
• M75: 44,331,085 km (0.105 R)
• M76: 44,866,645 km (0.11 R)
• M77: 45,250,514 km (0.037 R)
• M78: 45,327,407 km (0.062 R)
• M79: 48,832,485 km (0.114 R)
• M80: 48,911,323 km (0.114 R)
• M81: 50,976,970 km (0.062 R)
• M82: 51,057,005 km (0.051 R)
• M83: 51,377,594 km (0.099 R)
• M84: 51,939,932 km (0.104 R)
• M85: 52,423,731 km (0.115 R)
• M86: 52,585,297 km (0.067 R)
• M87: 52,747,012 km (0.037 R)
• M88: 53,314,437 km (0.067 R)
• M89: 53,721,044 km (0.054 R)
• M90: 54,291,910 km (0.117 R)

Planet 9 - Gas Giant

Semi-Major Axis: 11.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.9

Radius: 10.3

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 9.17 AU - 14.59 AU

Year: 14527 Days

Day: 7.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 46,265,360 km

• M1: 132,245 km (0.11 R)
• M2: 204,500 km (0.033 R)
• M3: 310,416 km (0.1 R)
• M4: 404,662 km (0.102 R)
• M5: 583,282 km (0.045 R)
• M6: 739,462 km (0.082 R)
• M7: 806,183 km (0.105 R)
• M8: 1,056,909 km (0.069 R)
• M9: 1,311,973 km (0.111 R)
• M10: 1,811,331 km (0.103 R)
• M11: 1,880,595 km (0.082 R)
• M12: 2,094,071 km (0.11 R)
• M13: 2,675,558 km (0.029 R)
• M14: 2,998,241 km (0.11 R)
• M15: 3,476,804 km (0.093 R)
• M16: 3,888,946 km (0.073 R)
• M17: 4,504,841 km (0.075 R)
• M18: 5,184,015 km (0.094 R)
• M19: 5,586,583 km (0.05 R)
• M20: 5,654,800 km (0.104 R)
• M21: 6,069,186 km (0.109 R)
• M22: 6,672,963 km (0.11 R)
• M23: 7,558,133 km (0.115 R)
• M24: 7,747,225 km (0.092 R)
• M25: 8,440,761 km (0.088 R)
• M26: 8,519,000 km (0.111 R)
• M27: 9,845,634 km (0.087 R)
• M28: 10,427,720 km (0.109 R)
• M29: 10,807,848 km (0.037 R)
• M30: 11,106,744 km (0.095 R)
• M31: 11,975,459 km (0.076 R)
• M32: 12,418,119 km (0.116 R)
• M33: 12,731,078 km (0.079 R)
• M34: 13,228,341 km (0.071 R)
• M35: 13,456,328 km (0.119 R)
• M36: 14,055,468 km (0.034 R)
• M37: 14,381,741 km (0.113 R)
• M38: 14,710,557 km (0.039 R)
• M39: 16,734,616 km (0.049 R)
• M40: 17,428,451 km (0.094 R)
• M41: 18,182,424 km (0.04 R)
• M42: 18,742,070 km (0.052 R)
• M43: 19,982,835 km (0.105 R)
• M44: 21,036,901 km (0.091 R)
• M45: 22,055,064 km (0.094 R)
• M46: 23,474,150 km (0.104 R)
• M47: 24,083,312 km (0.055 R)
• M48: 24,585,662 km (0.093 R)
• M49: 25,942,216 km (0.073 R)
• M50: 26,457,131 km (0.086 R)
• M51: 26,629,468 km (0.117 R)
• M52: 27,206,916 km (0.099 R)
• M53: 27,322,854 km (0.102 R)
• M54: 27,555,329 km (0.06 R)
• M55: 29,319,387 km (0.092 R)
• M56: 30,575,860 km (0.084 R)
• M57: 33,575,447 km (0.102 R)
• M58: 33,824,527 km (0.118 R)
• M59: 33,949,142 km (0.044 R)
• M60: 34,324,334 km (0.068 R)
• M61: 35,331,277 km (0.114 R)
• M62: 35,838,414 km (0.109 R)
• M63: 37,761,495 km (0.106 R)
• M64: 37,826,121 km (0.072 R)
• M65: 38,085,224 km (0.109 R)
• M66: 38,215,075 km (0.108 R)
• M67: 38,670,302 km (0.096 R)
• M68: 40,113,173 km (0.09 R)
• M69: 40,377,363 km (0.074 R)
• M70: 40,642,151 km (0.059 R)
• M71: 41,106,952 km (0.042 R)
• M72: 42,713,782 km (0.082 R)
• M73: 43,118,744 km (0.116 R)
• M74: 43,660,737 km (0.059 R)
• M75: 43,796,572 km (0.11 R)
• M76: 43,864,489 km (0.082 R)
• M77: 44,614,423 km (0.097 R)
• M78: 45,299,881 km (0.076 R)
• M79: 46,127,007 km (0.117 R)

Kuiper Belt

Range: 30.9 - 60.9 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 209 - 15,151 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit