🌌 Stone's Star System Generator

Planet 1 - Terrestrial

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1.68 AU - 1.94 AU

Year: 898 Days

Day: 25.7 Hours

Environment

Temp: -64 °C

Axial Tilt: 16 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 3.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.18

Radius: 1.37

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 3.32 AU - 3.78 AU

Year: 2468 Days

Day: 23 Hours

Environment

Temp: -114 °C

Axial Tilt: 3.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 106,699,055 km

• M1: 1,101,938 km (0.097 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.22

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 2.87 AU - 4.55 AU

Year: 2637 Days

Day: 37.5 Hours

Environment

Temp: -118 °C

Axial Tilt: 21.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 106,699,055 km

• M1: 109,057 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 987.9

Radius: 8

Gravity: 15.44 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 4.74 AU - 7.64 AU

Year: 5682 Days

Day: 7.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (85)

Outer Limit: 106,699,055 km

• M1: 108,907 km (0.072 R)
• M2: 352,602 km (0.102 R)
• M3: 551,567 km (0.093 R)
• M4: 699,370 km (0.078 R)
• M5: 1,271,133 km (0.049 R)
• M6: 1,506,899 km (0.082 R)
• M7: 1,756,728 km (0.079 R)
• M8: 1,836,164 km (0.054 R)
• M9: 1,937,442 km (0.114 R)
• M10: 2,166,476 km (0.095 R)
• M11: 2,882,003 km (0.112 R)
• M12: 3,095,778 km (0.116 R)
• M13: 3,168,184 km (0.037 R)
• M14: 3,364,007 km (0.087 R)
• M15: 3,563,870 km (0.098 R)
• M16: 3,844,964 km (0.083 R)
• M17: 3,975,115 km (0.053 R)
• M18: 4,080,432 km (0.114 R)
• M19: 4,239,903 km (0.118 R)
• M20: 4,898,732 km (0.092 R)
• M21: 4,983,404 km (0.112 R)
• M22: 5,040,102 km (0.096 R)
• M23: 5,154,095 km (0.094 R)
• M24: 5,648,217 km (0.113 R)
• M25: 5,915,997 km (0.101 R)
• M26: 6,157,448 km (0.079 R)
• M27: 6,712,606 km (0.034 R)
• M28: 7,673,324 km (0.062 R)
• M29: 7,771,759 km (0.095 R)
• M30: 8,136,179 km (0.101 R)
• M31: 9,193,388 km (0.12 R)
• M32: 9,332,813 km (0.116 R)
• M33: 9,437,980 km (0.119 R)
• M34: 11,321,866 km (0.09 R)
• M35: 11,584,111 km (0.067 R)
• M36: 11,848,451 km (0.114 R)
• M37: 12,038,440 km (0.097 R)
• M38: 12,575,795 km (0.093 R)
• M39: 12,769,674 km (0.042 R)
• M40: 13,833,315 km (0.114 R)
• M41: 14,073,569 km (0.057 R)
• M42: 14,154,053 km (0.081 R)
• M43: 14,598,807 km (0.071 R)
• M44: 15,089,488 km (0.089 R)
• M45: 15,502,379 km (0.077 R)
• M46: 16,086,708 km (0.116 R)
• M47: 16,297,192 km (0.104 R)
• M48: 16,635,732 km (0.04 R)
• M49: 17,062,385 km (0.118 R)
• M50: 17,191,039 km (0.103 R)
• M51: 17,752,331 km (0.08 R)
• M52: 19,786,263 km (0.099 R)
• M53: 19,921,500 km (0.05 R)
• M54: 20,056,886 km (0.102 R)
• M55: 20,647,648 km (0.064 R)
• M56: 20,922,309 km (0.114 R)
• M57: 21,060,089 km (0.108 R)
• M58: 21,753,326 km (0.094 R)
• M59: 22,407,068 km (0.093 R)
• M60: 23,067,393 km (0.091 R)
• M61: 23,542,815 km (0.08 R)
• M62: 23,686,130 km (0.101 R)
• M63: 23,877,615 km (0.095 R)
• M64: 25,134,836 km (0.104 R)
• M65: 25,477,116 km (0.093 R)
• M66: 25,968,545 km (0.105 R)
• M67: 26,612,115 km (0.111 R)
• M68: 27,562,211 km (0.044 R)
• M69: 28,016,240 km (0.115 R)
• M70: 29,084,968 km (0.066 R)
• M71: 29,136,130 km (0.107 R)
• M72: 29,290,066 km (0.116 R)
• M73: 29,701,610 km (0.118 R)
• M74: 30,322,591 km (0.106 R)
• M75: 31,788,351 km (0.1 R)
• M76: 32,689,379 km (0.096 R)
• M77: 32,849,299 km (0.086 R)
• M78: 33,491,373 km (0.07 R)
• M79: 34,191,641 km (0.085 R)
• M80: 34,462,413 km (0.031 R)
• M81: 35,114,809 km (0.109 R)
• M82: 35,387,825 km (0.113 R)
• M83: 35,716,492 km (0.056 R)
• M84: 35,881,199 km (0.089 R)
• M85: 36,985,530 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 7.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 455.3

Radius: 10.9

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 6.48 AU - 8.8 AU

Year: 7791 Days

Day: 10.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (82)

Outer Limit: 106,699,055 km

• M1: 156,180 km (0.068 R)
• M2: 407,355 km (0.084 R)
• M3: 541,993 km (0.116 R)
• M4: 720,314 km (0.052 R)
• M5: 803,041 km (0.094 R)
• M6: 889,509 km (0.105 R)
• M7: 979,268 km (0.072 R)
• M8: 1,088,175 km (0.082 R)
• M9: 1,201,570 km (0.079 R)
• M10: 1,336,059 km (0.108 R)
• M11: 1,405,322 km (0.094 R)
• M12: 1,827,787 km (0.066 R)
• M13: 2,309,642 km (0.07 R)
• M14: 2,543,613 km (0.084 R)
• M15: 2,965,927 km (0.101 R)
• M16: 3,267,816 km (0.055 R)
• M17: 3,434,618 km (0.101 R)
• M18: 3,702,248 km (0.098 R)
• M19: 3,826,265 km (0.07 R)
• M20: 3,926,495 km (0.114 R)
• M21: 4,052,906 km (0.075 R)
• M22: 4,258,154 km (0.09 R)
• M23: 4,388,304 km (0.072 R)
• M24: 4,625,716 km (0.12 R)
• M25: 4,705,900 km (0.118 R)
• M26: 5,058,353 km (0.116 R)
• M27: 5,140,931 km (0.034 R)
• M28: 5,279,608 km (0.1 R)
• M29: 5,760,266 km (0.071 R)
• M30: 5,846,584 km (0.072 R)
• M31: 5,991,395 km (0.025 R)
• M32: 6,552,686 km (0.073 R)
• M33: 7,441,596 km (0.071 R)
• M34: 7,567,259 km (0.039 R)
• M35: 7,916,271 km (0.079 R)
• M36: 9,773,977 km (0.062 R)
• M37: 10,015,278 km (0.064 R)
• M38: 10,504,014 km (0.115 R)
• M39: 10,645,085 km (0.099 R)
• M40: 10,929,172 km (0.061 R)
• M41: 13,251,978 km (0.034 R)
• M42: 13,827,032 km (0.116 R)
• M43: 14,059,208 km (0.099 R)
• M44: 14,566,943 km (0.116 R)
• M45: 15,080,662 km (0.041 R)
• M46: 15,239,984 km (0.107 R)
• M47: 15,560,273 km (0.115 R)
• M48: 15,842,265 km (0.025 R)
• M49: 15,923,197 km (0.107 R)
• M50: 16,044,671 km (0.099 R)
• M51: 16,657,424 km (0.119 R)
• M52: 16,945,848 km (0.116 R)
• M53: 17,444,309 km (0.102 R)
• M54: 18,243,460 km (0.076 R)
• M55: 18,711,552 km (0.089 R)
• M56: 19,054,580 km (0.028 R)
• M57: 19,833,686 km (0.029 R)
• M58: 20,139,613 km (0.042 R)
• M59: 21,557,652 km (0.069 R)
• M60: 21,782,048 km (0.069 R)
• M61: 22,278,564 km (0.117 R)
• M62: 22,551,131 km (0.117 R)
• M63: 22,824,596 km (0.117 R)
• M64: 23,976,200 km (0.087 R)
• M65: 24,208,825 km (0.072 R)
• M66: 24,629,345 km (0.039 R)
• M67: 25,146,654 km (0.079 R)
• M68: 25,430,292 km (0.042 R)
• M69: 25,857,842 km (0.025 R)
• M70: 28,030,901 km (0.093 R)
• M71: 28,374,079 km (0.105 R)
• M72: 29,711,184 km (0.045 R)
• M73: 31,119,499 km (0.051 R)
• M74: 31,271,640 km (0.087 R)
• M75: 31,373,217 km (0.115 R)
• M76: 31,985,072 km (0.043 R)
• M77: 33,376,033 km (0.115 R)
• M78: 33,635,735 km (0.076 R)
• M79: 33,896,185 km (0.11 R)
• M80: 34,261,952 km (0.081 R)
• M81: 34,419,029 km (0.11 R)
• M82: 34,524,047 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 110.4

Radius: 11.4

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 9.01 AU - 14.83 AU

Year: 15184 Days

Day: 14.5 Hours

Environment

Temp: -190 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (59)

Outer Limit: 106,699,055 km

• M1: 171,140 km (0.109 R)
• M2: 285,582 km (0.101 R)
• M3: 458,517 km (0.094 R)
• M4: 596,596 km (0.074 R)
• M5: 932,892 km (0.091 R)
• M6: 1,309,430 km (0.057 R)
• M7: 1,731,895 km (0.119 R)
• M8: 1,806,394 km (0.093 R)
• M9: 1,901,090 km (0.093 R)
• M10: 2,611,231 km (0.053 R)
• M11: 4,176,773 km (0.109 R)
• M12: 4,278,050 km (0.093 R)
• M13: 5,696,537 km (0.107 R)
• M14: 6,093,869 km (0.084 R)
• M15: 7,065,956 km (0.089 R)
• M16: 7,247,867 km (0.07 R)
• M17: 8,468,137 km (0.107 R)
• M18: 9,449,649 km (0.096 R)
• M19: 10,158,144 km (0.079 R)
• M20: 10,848,688 km (0.043 R)
• M21: 11,412,223 km (0.06 R)
• M22: 12,202,549 km (0.099 R)
• M23: 12,677,821 km (0.117 R)
• M24: 12,936,326 km (0.077 R)
• M25: 13,047,627 km (0.102 R)
• M26: 13,271,276 km (0.109 R)
• M27: 13,608,918 km (0.075 R)
• M28: 14,446,517 km (0.099 R)
• M29: 14,677,945 km (0.112 R)
• M30: 15,654,968 km (0.103 R)
• M31: 16,855,192 km (0.103 R)
• M32: 17,384,469 km (0.064 R)
• M33: 17,630,558 km (0.08 R)
• M34: 17,754,126 km (0.026 R)
• M35: 18,167,913 km (0.115 R)
• M36: 18,292,678 km (0.069 R)
• M37: 18,794,429 km (0.061 R)
• M38: 19,216,146 km (0.106 R)
• M39: 19,555,733 km (0.097 R)
• M40: 19,641,004 km (0.075 R)
• M41: 20,370,293 km (0.07 R)
• M42: 20,890,445 km (0.117 R)
• M43: 21,546,731 km (0.113 R)
• M44: 21,943,764 km (0.082 R)
• M45: 22,121,037 km (0.104 R)
• M46: 24,102,012 km (0.103 R)
• M47: 24,422,451 km (0.062 R)
• M48: 25,299,244 km (0.043 R)
• M49: 25,764,792 km (0.082 R)
• M50: 26,186,210 km (0.095 R)
• M51: 26,515,624 km (0.117 R)
• M52: 27,321,209 km (0.109 R)
• M53: 27,846,896 km (0.116 R)
• M54: 28,327,554 km (0.1 R)
• M55: 30,524,548 km (0.062 R)
• M56: 30,771,983 km (0.035 R)
• M57: 30,970,499 km (0.093 R)
• M58: 32,270,804 km (0.118 R)
• M59: 32,472,462 km (0.03 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 185.7

Radius: 3

Gravity: 20.63 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 13.42 AU - 19.52 AU

Year: 24661 Days

Day: 24 Hours

Environment

Temp: -200 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (97)

Outer Limit: 106,699,055 km

• M1: 595,549 km (0.091 R)
• M2: 767,287 km (0.081 R)
• M3: 1,018,761 km (0.068 R)
• M4: 1,246,449 km (0.103 R)
• M5: 1,668,166 km (0.084 R)
• M6: 2,360,355 km (0.076 R)
• M7: 2,508,307 km (0.034 R)
• M8: 3,864,562 km (0.054 R)
• M9: 4,180,064 km (0.095 R)
• M10: 4,872,702 km (0.067 R)
• M11: 4,947,650 km (0.086 R)
• M12: 5,098,744 km (0.064 R)
• M13: 5,366,824 km (0.029 R)
• M14: 5,836,860 km (0.044 R)
• M15: 6,401,891 km (0.09 R)
• M16: 6,566,449 km (0.089 R)
• M17: 6,941,790 km (0.094 R)
• M18: 6,983,977 km (0.109 R)
• M19: 7,453,116 km (0.12 R)
• M20: 7,496,349 km (0.113 R)
• M21: 7,539,583 km (0.099 R)
• M22: 7,713,416 km (0.094 R)
• M23: 7,757,098 km (0.111 R)
• M24: 8,020,690 km (0.115 R)
• M25: 8,421,612 km (0.113 R)
• M26: 8,647,206 km (0.071 R)
• M27: 8,874,744 km (0.101 R)
• M28: 9,243,054 km (0.109 R)
• M29: 9,569,327 km (0.069 R)
• M30: 10,473,646 km (0.12 R)
• M31: 11,058,873 km (0.112 R)
• M32: 11,305,709 km (0.066 R)
• M33: 11,855,332 km (0.081 R)
• M34: 11,905,747 km (0.118 R)
• M35: 12,311,456 km (0.049 R)
• M36: 13,032,368 km (0.103 R)
• M37: 13,766,894 km (0.118 R)
• M38: 13,872,959 km (0.071 R)
• M39: 14,299,761 km (0.113 R)
• M40: 14,407,023 km (0.05 R)
• M41: 14,460,878 km (0.07 R)
• M42: 14,839,211 km (0.107 R)
• M43: 15,111,479 km (0.102 R)
• M44: 15,771,655 km (0.093 R)
• M45: 15,938,157 km (0.028 R)
• M46: 16,161,058 km (0.084 R)
• M47: 16,328,907 km (0.109 R)
• M48: 17,176,828 km (0.119 R)
• M49: 17,634,896 km (0.117 R)
• M50: 18,504,509 km (0.11 R)
• M51: 18,797,421 km (0.097 R)
• M52: 18,856,213 km (0.084 R)
• M53: 19,091,979 km (0.054 R)
• M54: 19,151,071 km (0.084 R)
• M55: 21,379,480 km (0.097 R)
• M56: 21,440,816 km (0.114 R)
• M57: 23,182,434 km (0.037 R)
• M58: 23,624,945 km (0.099 R)
• M59: 23,878,962 km (0.051 R)
• M60: 26,074,909 km (0.095 R)
• M61: 26,535,072 km (0.092 R)
• M62: 27,130,471 km (0.055 R)
• M63: 28,334,585 km (0.112 R)
• M64: 28,604,459 km (0.06 R)
• M65: 29,692,634 km (0.059 R)
• M66: 30,794,273 km (0.12 R)
• M67: 30,932,950 km (0.077 R)
• M68: 31,350,179 km (0.08 R)
• M69: 31,629,328 km (0.067 R)
• M70: 32,754,155 km (0.048 R)
• M71: 33,250,371 km (0.118 R)
• M72: 35,987,413 km (0.099 R)
• M73: 36,352,881 km (0.045 R)
• M74: 37,087,407 km (0.108 R)
• M75: 37,975,419 km (0.11 R)
• M76: 38,198,470 km (0.101 R)
• M77: 38,571,268 km (0.078 R)
• M78: 38,945,262 km (0.079 R)
• M79: 39,095,309 km (0.087 R)
• M80: 39,170,258 km (0.064 R)
• M81: 39,847,786 km (0.088 R)
• M82: 40,605,051 km (0.071 R)
• M83: 41,443,697 km (0.058 R)
• M84: 42,673,541 km (0.101 R)
• M85: 43,137,743 km (0.115 R)
• M86: 43,837,262 km (0.069 R)
• M87: 43,915,203 km (0.099 R)
• M88: 44,384,043 km (0.073 R)
• M89: 45,879,124 km (0.104 R)
• M90: 46,196,122 km (0.113 R)
• M91: 47,151,005 km (0.115 R)
• M92: 50,544,333 km (0.118 R)
• M93: 51,775,225 km (0.101 R)
• M94: 52,435,699 km (0.082 R)
• M95: 52,601,304 km (0.106 R)
• M96: 53,182,043 km (0.085 R)
• M97: 54,937,275 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 739.4

Radius: 8

Gravity: 11.55 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 14.78 AU - 24.38 AU

Year: 31967 Days

Day: 18.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (87)

Outer Limit: 106,699,055 km

• M1: 257,458 km (0.032 R)
• M2: 423,960 km (0.115 R)
• M3: 546,331 km (0.068 R)
• M4: 681,269 km (0.075 R)
• M5: 952,340 km (0.11 R)
• M6: 1,363,585 km (0.082 R)
• M7: 1,989,801 km (0.041 R)
• M8: 2,202,081 km (0.117 R)
• M9: 2,421,690 km (0.1 R)
• M10: 2,835,029 km (0.11 R)
• M11: 3,171,624 km (0.117 R)
• M12: 3,572,098 km (0.06 R)
• M13: 3,988,578 km (0.114 R)
• M14: 4,420,467 km (0.102 R)
• M15: 5,445,961 km (0.092 R)
• M16: 5,564,293 km (0.063 R)
• M17: 6,667,577 km (0.033 R)
• M18: 8,037,594 km (0.042 R)
• M19: 9,278,808 km (0.114 R)
• M20: 9,349,418 km (0.106 R)
• M21: 9,849,374 km (0.042 R)
• M22: 12,632,942 km (0.037 R)
• M23: 14,150,463 km (0.112 R)
• M24: 15,221,434 km (0.095 R)
• M25: 15,472,309 km (0.085 R)
• M26: 15,640,308 km (0.106 R)
• M27: 18,055,266 km (0.042 R)
• M28: 18,587,685 km (0.081 R)
• M29: 18,766,305 km (0.117 R)
• M30: 19,215,398 km (0.097 R)
• M31: 20,399,614 km (0.105 R)
• M32: 20,676,221 km (0.068 R)
• M33: 21,419,872 km (0.119 R)
• M34: 22,077,803 km (0.101 R)
• M35: 23,029,096 km (0.113 R)
• M36: 24,091,091 km (0.109 R)
• M37: 25,962,561 km (0.079 R)
• M38: 27,472,751 km (0.101 R)
• M39: 27,574,478 km (0.118 R)
• M40: 30,788,588 km (0.08 R)
• M41: 31,637,107 km (0.046 R)
• M42: 31,850,583 km (0.051 R)
• M43: 33,032,407 km (0.116 R)
• M44: 33,465,642 km (0.102 R)
• M45: 33,574,250 km (0.117 R)
• M46: 34,010,029 km (0.062 R)
• M47: 35,328,285 km (0.111 R)
• M48: 37,224,139 km (0.099 R)
• M49: 37,901,219 km (0.105 R)
• M50: 38,582,338 km (0.113 R)
• M51: 39,382,088 km (0.074 R)
• M52: 39,496,830 km (0.077 R)
• M53: 42,400,076 km (0.114 R)
• M54: 48,041,112 km (0.115 R)
• M55: 52,014,282 km (0.048 R)
• M56: 52,518,277 km (0.114 R)
• M57: 55,190,993 km (0.077 R)
• M58: 58,429,787 km (0.105 R)
• M59: 59,347,719 km (0.098 R)
• M60: 59,742,508 km (0.078 R)
• M61: 63,066,722 km (0.045 R)
• M62: 64,008,142 km (0.103 R)
• M63: 65,905,043 km (0.05 R)
• M64: 66,860,375 km (0.12 R)
• M65: 67,271,170 km (0.12 R)
• M66: 67,682,864 km (0.08 R)
• M67: 72,406,716 km (0.089 R)
• M68: 73,392,416 km (0.102 R)
• M69: 74,240,786 km (0.119 R)
• M70: 76,232,981 km (0.115 R)
• M71: 77,092,121 km (0.11 R)
• M72: 77,666,727 km (0.094 R)
• M73: 79,543,881 km (0.06 R)
• M74: 80,269,879 km (0.068 R)
• M75: 87,798,990 km (0.116 R)
• M76: 88,399,027 km (0.104 R)
• M77: 88,699,569 km (0.062 R)
• M78: 89,000,411 km (0.107 R)
• M79: 89,150,906 km (0.074 R)
• M80: 91,875,383 km (0.09 R)
• M81: 92,789,575 km (0.102 R)
• M82: 95,858,576 km (0.112 R)
• M83: 98,182,130 km (0.097 R)
• M84: 100,681,013 km (0.102 R)
• M85: 101,309,024 km (0.108 R)
• M86: 104,945,001 km (0.111 R)
• M87: 106,539,265 km (0.055 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 199 - 14,201 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit