🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.69

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.32 AU - 1.58 AU

Year: 651 Days

Day: 19.4 Hours

Environment

Temp: -41 °C

Axial Tilt: 56.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 2.14 AU - 2.64 AU

Year: 1377 Days

Day: 42.4 Hours

Environment

Temp: -95 °C

Axial Tilt: 23.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 62,716,675 km

• M1: 1,030,729 km (0.059 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.83

Radius: 0.93

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 2.55 AU - 2.77 AU

Year: 1617 Days

Day: 25 Hours

Environment

Temp: -105 °C

Axial Tilt: 14.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 62,716,675 km

• M1: 808,876 km (0.087 R)
• M2: 1,354,010 km (0.096 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.43

Radius: 1.43

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 2.86 AU - 3 AU

Year: 1870 Days

Day: 22.3 Hours

Environment

Temp: -107 °C

Axial Tilt: 10.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 62,716,675 km

• M1: 649,853 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 724.7

Radius: 14.2

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 4.16 AU - 5.82 AU

Year: 4155 Days

Day: 14.3 Hours

Environment

Temp: -139 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (67)

Outer Limit: 62,716,675 km

• M1: 195,973 km (0.083 R)
• M2: 331,210 km (0.119 R)
• M3: 426,055 km (0.034 R)
• M4: 544,237 km (0.082 R)
• M5: 666,309 km (0.112 R)
• M6: 930,648 km (0.088 R)
• M7: 1,082,789 km (0.057 R)
• M8: 1,189,453 km (0.089 R)
• M9: 1,487,152 km (0.097 R)
• M10: 1,825,543 km (0.093 R)
• M11: 1,954,795 km (0.112 R)
• M12: 2,053,829 km (0.102 R)
• M13: 2,171,712 km (0.091 R)
• M14: 2,291,839 km (0.111 R)
• M15: 2,575,327 km (0.107 R)
• M16: 3,373,432 km (0.116 R)
• M17: 3,862,617 km (0.053 R)
• M18: 3,988,578 km (0.113 R)
• M19: 4,418,224 km (0.087 R)
• M20: 4,550,169 km (0.094 R)
• M21: 5,322,243 km (0.1 R)
• M22: 5,486,352 km (0.11 R)
• M23: 5,795,571 km (0.11 R)
• M24: 5,915,997 km (0.033 R)
• M25: 6,282,662 km (0.114 R)
• M26: 7,531,355 km (0.042 R)
• M27: 7,636,672 km (0.04 R)
• M28: 7,848,802 km (0.111 R)
• M29: 8,415,030 km (0.076 R)
• M30: 8,799,945 km (0.099 R)
• M31: 9,022,397 km (0.105 R)
• M32: 9,246,794 km (0.098 R)
• M33: 9,359,740 km (0.111 R)
• M34: 9,586,980 km (0.086 R)
• M35: 9,758,568 km (0.115 R)
• M36: 10,133,909 km (0.066 R)
• M37: 10,543,508 km (0.104 R)
• M38: 11,048,102 km (0.119 R)
• M39: 11,348,794 km (0.065 R)
• M40: 11,774,100 km (0.087 R)
• M41: 12,112,042 km (0.066 R)
• M42: 12,297,693 km (0.063 R)
• M43: 13,018,306 km (0.12 R)
• M44: 13,113,301 km (0.102 R)
• M45: 13,272,173 km (0.079 R)
• M46: 14,796,725 km (0.09 R)
• M47: 15,832,391 km (0.108 R)
• M48: 16,478,804 km (0.098 R)
• M49: 16,650,243 km (0.071 R)
• M50: 16,960,509 km (0.063 R)
• M51: 17,656,887 km (0.107 R)
• M52: 17,973,287 km (0.089 R)
• M53: 19,547,355 km (0.071 R)
• M54: 19,765,319 km (0.066 R)
• M55: 20,904,806 km (0.095 R)
• M56: 21,127,857 km (0.098 R)
• M57: 21,877,043 km (0.117 R)
• M58: 22,103,385 km (0.108 R)
• M59: 22,558,611 km (0.035 R)
• M60: 22,902,088 km (0.039 R)
• M61: 25,038,495 km (0.104 R)
• M62: 25,156,827 km (0.092 R)
• M63: 25,433,732 km (0.091 R)
• M64: 25,632,099 km (0.082 R)
• M65: 25,791,271 km (0.112 R)
• M66: 26,230,491 km (0.109 R)
• M67: 26,792,979 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 127.5

Radius: 12.7

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 7.62 AU - 8.28 AU

Year: 8356 Days

Day: 13 Hours

Environment

Temp: -168 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (79)

Outer Limit: 62,716,675 km

• M1: 158,723 km (0.105 R)
• M2: 283,338 km (0.04 R)
• M3: 419,622 km (0.111 R)
• M4: 714,031 km (0.059 R)
• M5: 820,096 km (0.099 R)
• M6: 1,110,914 km (0.081 R)
• M7: 1,489,845 km (0.051 R)
• M8: 1,601,595 km (0.108 R)
• M9: 1,716,187 km (0.04 R)
• M10: 1,969,456 km (0.065 R)
• M11: 2,108,582 km (0.081 R)
• M12: 2,219,135 km (0.066 R)
• M13: 2,462,680 km (0.075 R)
• M14: 2,732,405 km (0.082 R)
• M15: 2,870,933 km (0.064 R)
• M16: 2,976,399 km (0.06 R)
• M17: 3,598,726 km (0.063 R)
• M18: 3,731,868 km (0.115 R)
• M19: 3,905,552 km (0.104 R)
• M20: 4,022,836 km (0.096 R)
• M21: 4,181,111 km (0.098 R)
• M22: 4,261,146 km (0.075 R)
• M23: 4,544,933 km (0.087 R)
• M24: 4,855,947 km (0.055 R)
• M25: 4,940,170 km (0.04 R)
• M26: 5,195,534 km (0.077 R)
• M27: 5,499,068 km (0.103 R)
• M28: 6,032,983 km (0.084 R)
• M29: 6,123,490 km (0.076 R)
• M30: 6,260,372 km (0.074 R)
• M31: 6,864,897 km (0.064 R)
• M32: 7,054,736 km (0.094 R)
• M33: 7,246,222 km (0.086 R)
• M34: 7,391,032 km (0.036 R)
• M35: 7,512,506 km (0.097 R)
• M36: 7,683,646 km (0.092 R)
• M37: 7,880,816 km (0.112 R)
• M38: 8,154,730 km (0.111 R)
• M39: 8,891,798 km (0.106 R)
• M40: 9,150,902 km (0.106 R)
• M41: 9,438,878 km (0.117 R)
• M42: 10,023,805 km (0.119 R)
• M43: 10,104,588 km (0.115 R)
• M44: 11,200,991 km (0.118 R)
• M45: 11,368,690 km (0.071 R)
• M46: 11,905,447 km (0.068 R)
• M47: 12,450,432 km (0.102 R)
• M48: 12,974,324 km (0.051 R)
• M49: 13,238,963 km (0.091 R)
• M50: 13,357,145 km (0.07 R)
• M51: 13,446,006 km (0.074 R)
• M52: 13,535,167 km (0.117 R)
• M53: 14,103,938 km (0.086 R)
• M54: 14,254,882 km (0.091 R)
• M55: 15,110,283 km (0.113 R)
• M56: 15,575,532 km (0.09 R)
• M57: 15,794,094 km (0.114 R)
• M58: 16,679,115 km (0.12 R)
• M59: 16,902,914 km (0.095 R)
• M60: 17,063,283 km (0.07 R)
• M61: 17,256,563 km (0.099 R)
• M62: 17,482,905 km (0.115 R)
• M63: 18,135,002 km (0.117 R)
• M64: 18,332,172 km (0.08 R)
• M65: 18,530,090 km (0.118 R)
• M66: 18,629,273 km (0.066 R)
• M67: 19,228,263 km (0.062 R)
• M68: 19,429,323 km (0.032 R)
• M69: 19,597,471 km (0.05 R)
• M70: 20,206,633 km (0.103 R)
• M71: 20,342,917 km (0.089 R)
• M72: 21,063,231 km (0.093 R)
• M73: 21,409,101 km (0.044 R)
• M74: 22,352,465 km (0.072 R)
• M75: 22,528,691 km (0.094 R)
• M76: 22,917,945 km (0.114 R)
• M77: 23,523,816 km (0.056 R)
• M78: 23,882,851 km (0.089 R)
• M79: 24,171,276 km (0.059 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 388.1

Radius: 3.7

Gravity: 28.35 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 14.01 AU - 14.37 AU

Year: 19926 Days

Day: 15.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 62,716,675 km

• M1: 61,934 km (0.117 R)
• M2: 340,036 km (0.086 R)
• M3: 439,519 km (0.105 R)
• M4: 685,457 km (0.043 R)
• M5: 747,690 km (0.107 R)
• M6: 1,014,872 km (0.11 R)
• M7: 1,360,892 km (0.099 R)
• M8: 1,797,269 km (0.101 R)
• M9: 1,971,401 km (0.119 R)
• M10: 2,001,021 km (0.107 R)
• M11: 2,211,954 km (0.114 R)
• M12: 2,335,672 km (0.11 R)
• M13: 2,525,511 km (0.102 R)
• M14: 3,333,639 km (0.118 R)
• M15: 4,798,950 km (0.093 R)
• M16: 4,918,928 km (0.074 R)
• M17: 4,999,561 km (0.102 R)
• M18: 5,039,952 km (0.112 R)
• M19: 5,325,983 km (0.119 R)
• M20: 5,701,624 km (0.091 R)
• M21: 5,743,810 km (0.08 R)
• M22: 7,985,385 km (0.103 R)
• M23: 8,080,080 km (0.109 R)
• M24: 8,318,539 km (0.077 R)
• M25: 9,948,857 km (0.108 R)
• M26: 10,255,682 km (0.105 R)
• M27: 10,513,589 km (0.11 R)
• M28: 10,721,679 km (0.028 R)
• M29: 11,513,501 km (0.082 R)
• M30: 11,566,907 km (0.104 R)
• M31: 11,781,580 km (0.109 R)
• M32: 14,458,335 km (0.077 R)
• M33: 14,689,464 km (0.084 R)
• M34: 15,567,304 km (0.109 R)
• M35: 15,863,807 km (0.108 R)
• M36: 16,221,944 km (0.042 R)
• M37: 17,128,807 km (0.094 R)
• M38: 17,928,108 km (0.113 R)
• M39: 18,301,056 km (0.052 R)
• M40: 18,363,438 km (0.102 R)
• M41: 18,676,546 km (0.089 R)
• M42: 19,498,886 km (0.078 R)
• M43: 20,851,998 km (0.088 R)
• M44: 21,244,094 km (0.063 R)
• M45: 23,241,076 km (0.052 R)
• M46: 24,330,448 km (0.089 R)
• M47: 25,505,839 km (0.03 R)
• M48: 25,925,161 km (0.078 R)
• M49: 26,346,728 km (0.04 R)
• M50: 26,770,539 km (0.081 R)
• M51: 26,983,267 km (0.099 R)
• M52: 28,199,498 km (0.066 R)
• M53: 28,271,604 km (0.083 R)
• M54: 28,343,710 km (0.094 R)
• M55: 31,429,166 km (0.039 R)
• M56: 32,104,002 km (0.07 R)
• M57: 32,179,250 km (0.106 R)
• M58: 33,239,450 km (0.093 R)
• M59: 33,773,814 km (0.055 R)
• M60: 34,619,191 km (0.089 R)
• M61: 34,928,260 km (0.065 R)
• M62: 35,005,752 km (0.09 R)
• M63: 35,160,736 km (0.082 R)
• M64: 35,783,212 km (0.101 R)
• M65: 41,218,402 km (0.1 R)
• M66: 41,628,001 km (0.086 R)
• M67: 42,865,175 km (0.109 R)
• M68: 43,280,160 km (0.06 R)
• M69: 45,122,159 km (0.077 R)
• M70: 45,883,013 km (0.099 R)
• M71: 48,104,841 km (0.096 R)
• M72: 48,277,178 km (0.046 R)
• M73: 49,663,501 km (0.098 R)
• M74: 53,007,762 km (0.096 R)
• M75: 53,096,772 km (0.079 R)
• M76: 53,989,273 km (0.099 R)
• M77: 54,437,468 km (0.075 R)
• M78: 55,698,878 km (0.071 R)
• M79: 57,243,476 km (0.106 R)
• M80: 57,883,605 km (0.066 R)
• M81: 58,158,566 km (0.075 R)
• M82: 58,894,288 km (0.107 R)
• M83: 59,632,853 km (0.101 R)
• M84: 60,281,808 km (0.08 R)
• M85: 61,492,953 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 172.8

Radius: 3.5

Gravity: 14.11 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 14.22 AU - 20.9 AU

Year: 27431 Days

Day: 21.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (74)

Outer Limit: 62,716,675 km

• M1: 198,816 km (0.101 R)
• M2: 871,856 km (0.107 R)
• M3: 1,189,303 km (0.084 R)
• M4: 1,360,443 km (0.113 R)
• M5: 1,461,571 km (0.103 R)
• M6: 1,671,457 km (0.096 R)
• M7: 1,835,117 km (0.105 R)
• M8: 2,004,013 km (0.051 R)
• M9: 2,148,375 km (0.08 R)
• M10: 2,177,696 km (0.111 R)
• M11: 2,236,787 km (0.07 R)
• M12: 3,351,890 km (0.098 R)
• M13: 3,803,526 km (0.066 R)
• M14: 4,686,153 km (0.067 R)
• M15: 4,800,895 km (0.119 R)
• M16: 4,955,130 km (0.075 R)
• M17: 5,032,921 km (0.056 R)
• M18: 5,387,767 km (0.116 R)
• M19: 6,121,545 km (0.113 R)
• M20: 6,163,133 km (0.107 R)
• M21: 7,016,439 km (0.118 R)
• M22: 7,905,948 km (0.082 R)
• M23: 8,088,009 km (0.091 R)
• M24: 8,642,718 km (0.111 R)
• M25: 8,736,366 km (0.072 R)
• M26: 9,739,719 km (0.072 R)
• M27: 9,837,107 km (0.064 R)
• M28: 10,082,148 km (0.071 R)
• M29: 10,930,219 km (0.058 R)
• M30: 11,184,086 km (0.086 R)
• M31: 12,113,538 km (0.1 R)
• M32: 15,046,703 km (0.065 R)
• M33: 15,385,543 km (0.063 R)
• M34: 16,128,296 km (0.107 R)
• M35: 16,243,636 km (0.115 R)
• M36: 16,301,381 km (0.042 R)
• M37: 18,185,267 km (0.077 R)
• M38: 19,274,788 km (0.106 R)
• M39: 20,074,688 km (0.106 R)
• M40: 20,136,621 km (0.073 R)
• M41: 21,263,243 km (0.112 R)
• M42: 24,036,039 km (0.092 R)
• M43: 24,564,270 km (0.099 R)
• M44: 27,193,751 km (0.102 R)
• M45: 27,744,122 km (0.047 R)
• M46: 28,437,209 km (0.079 R)
• M47: 30,479,070 km (0.059 R)
• M48: 32,859,322 km (0.104 R)
• M49: 33,078,632 km (0.116 R)
• M50: 33,592,351 km (0.109 R)
• M51: 36,881,111 km (0.099 R)
• M52: 37,032,953 km (0.056 R)
• M53: 38,871,960 km (0.105 R)
• M54: 39,103,986 km (0.093 R)
• M55: 39,802,608 km (0.101 R)
• M56: 40,036,429 km (0.118 R)
• M57: 40,583,808 km (0.044 R)
• M58: 40,740,587 km (0.088 R)
• M59: 41,212,269 km (0.098 R)
• M60: 41,844,020 km (0.086 R)
• M61: 42,638,236 km (0.088 R)
• M62: 45,294,047 km (0.12 R)
• M63: 48,002,815 km (0.112 R)
• M64: 49,334,984 km (0.084 R)
• M65: 50,173,779 km (0.099 R)
• M66: 50,848,167 km (0.089 R)
• M67: 51,017,212 km (0.118 R)
• M68: 51,610,368 km (0.083 R)
• M69: 52,291,188 km (0.108 R)
• M70: 52,974,850 km (0.118 R)
• M71: 56,350,077 km (0.119 R)
• M72: 56,963,279 km (0.092 R)
• M73: 58,461,501 km (0.103 R)
• M74: 59,082,183 km (0.03 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 162

Radius: 4.3

Gravity: 8.76 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 18.07 AU - 19.85 AU

Year: 30776 Days

Day: 24.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (90)

Outer Limit: 62,716,675 km

• M1: 125,812 km (0.101 R)
• M2: 733,179 km (0.119 R)
• M3: 839,842 km (0.034 R)
• M4: 1,524,851 km (0.031 R)
• M5: 1,717,234 km (0.045 R)
• M6: 1,745,358 km (0.109 R)
• M7: 2,308,445 km (0.055 R)
• M8: 3,092,936 km (0.052 R)
• M9: 3,336,033 km (0.106 R)
• M10: 3,477,702 km (0.057 R)
• M11: 3,693,871 km (0.105 R)
• M12: 4,918,928 km (0.068 R)
• M13: 5,120,735 km (0.09 R)
• M14: 6,475,643 km (0.079 R)
• M15: 6,652,318 km (0.118 R)
• M16: 7,375,175 km (0.045 R)
• M17: 8,747,436 km (0.098 R)
• M18: 9,688,108 km (0.112 R)
• M19: 10,608,583 km (0.111 R)
• M20: 11,131,877 km (0.119 R)
• M21: 11,449,922 km (0.029 R)
• M22: 11,556,585 km (0.092 R)
• M23: 13,028,628 km (0.063 R)
• M24: 13,251,828 km (0.103 R)
• M25: 16,324,120 km (0.108 R)
• M26: 16,444,247 km (0.086 R)
• M27: 16,745,686 km (0.116 R)
• M28: 17,048,921 km (0.05 R)
• M29: 17,537,957 km (0.069 R)
• M30: 18,031,630 km (0.075 R)
• M31: 18,093,713 km (0.1 R)
• M32: 19,349,138 km (0.042 R)
• M33: 19,539,875 km (0.07 R)
• M34: 21,349,860 km (0.098 R)
• M35: 22,009,138 km (0.107 R)
• M36: 22,141,831 km (0.059 R)
• M37: 22,943,377 km (0.069 R)
• M38: 23,010,546 km (0.088 R)
• M39: 23,077,865 km (0.111 R)
• M40: 24,026,764 km (0.063 R)
• M41: 26,102,734 km (0.047 R)
• M42: 26,313,517 km (0.107 R)
• M43: 27,804,410 km (0.112 R)
• M44: 28,740,893 km (0.057 R)
• M45: 29,031,262 km (0.092 R)
• M46: 29,103,967 km (0.117 R)
• M47: 29,834,453 km (0.111 R)
• M48: 30,497,022 km (0.103 R)
• M49: 31,238,878 km (0.042 R)
• M50: 31,313,378 km (0.107 R)
• M51: 32,212,311 km (0.099 R)
• M52: 32,287,559 km (0.103 R)
• M53: 34,342,286 km (0.108 R)
• M54: 34,496,072 km (0.116 R)
• M55: 34,959,078 km (0.117 R)
• M56: 35,268,895 km (0.111 R)
• M57: 36,752,906 km (0.039 R)
• M58: 37,146,797 km (0.06 R)
• M59: 37,225,785 km (0.092 R)
• M60: 38,097,940 km (0.064 R)
• M61: 39,539,465 km (0.079 R)
• M62: 39,862,297 km (0.111 R)
• M63: 40,185,878 km (0.097 R)
• M64: 40,429,273 km (0.09 R)
• M65: 44,304,457 km (0.068 R)
• M66: 46,158,573 km (0.117 R)
• M67: 46,243,395 km (0.109 R)
• M68: 47,351,616 km (0.092 R)
• M69: 47,694,344 km (0.083 R)
• M70: 48,296,177 km (0.077 R)
• M71: 48,554,831 km (0.092 R)
• M72: 50,203,699 km (0.071 R)
• M73: 50,553,309 km (0.032 R)
• M74: 51,342,588 km (0.09 R)
• M75: 51,870,967 km (0.067 R)
• M76: 52,401,292 km (0.118 R)
• M77: 53,110,984 km (0.116 R)
• M78: 55,529,982 km (0.102 R)
• M79: 56,072,423 km (0.033 R)
• M80: 56,889,228 km (0.116 R)
• M81: 57,071,288 km (0.12 R)
• M82: 57,344,753 km (0.092 R)
• M83: 58,167,841 km (0.11 R)
• M84: 58,442,951 km (0.045 R)
• M85: 58,534,804 km (0.11 R)
• M86: 59,455,879 km (0.094 R)
• M87: 60,660,141 km (0.113 R)
• M88: 61,218,740 km (0.081 R)
• M89: 61,685,635 km (0.044 R)
• M90: 62,622,716 km (0.115 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 526 - 13,933 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit