Largest comets by diameter
Comets ranked by estimated diameter - the biggest icy bodies in the catalog. Orbital elements, physical parameters and close-approach records for thousands of asteroids and comets, in 10 languages.
100 objects
CINEOS
Diameter: 66.17 km · Perihelion: 11.783 AU
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Schwassmann-Wachmann
Diameter: 60.4 km · Perihelion: 5.775 AU
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Hale-Bopp
Diameter: 60.0 km · Perihelion: 0.891 AU
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Spacewatch
Diameter: 55.1 km · Perihelion: 4.883 AU
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Swift-Tuttle
Diameter: 26.0 km · Perihelion: 0.96 AU
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Neujmin
Diameter: 21.4 km · Perihelion: 1.578 AU
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LONEOS
Diameter: 13.6 km · Perihelion: 0.994 AU
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Levy
Diameter: 11.6 km · Perihelion: 0.983 AU
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Halley
Diameter: 11.0 km · Perihelion: 0.575 AU
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Gunn
Diameter: 10.8 km · Perihelion: 2.915 AU
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Tempel
Diameter: 10.6 km · Perihelion: 1.416 AU
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Kowal
Diameter: 10.2 km · Perihelion: 4.725 AU
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IRAS-Araki-Alcock
Diameter: 9.2 km · Perihelion: 0.991 AU
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Helin-Roman-Alu
Diameter: 9.0 km · Perihelion: 3.056 AU
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Arend-Rigaux
Diameter: 8.48 km · Perihelion: 1.426 AU
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Comas Sola
Diameter: 8.4 km · Perihelion: 1.994 AU
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Helin
Diameter: 8.4 km · Perihelion: 2.492 AU
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Longmore
Diameter: 8.2 km · Perihelion: 2.333 AU
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Gehrels
Diameter: 7.8 km · Perihelion: 2.975 AU
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Reinmuth
Diameter: 7.8 km · Perihelion: 1.877 AU
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Van Biesbroeck
Diameter: 6.66 km · Perihelion: 2.426 AU
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Machholz
Diameter: 6.4 km · Perihelion: 0.124 AU
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Lovas
Diameter: 6.2 km · Perihelion: 1.394 AU
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Schwassmann-Wachmann
Diameter: 6.2 km · Perihelion: 3.424 AU
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Tempel
Diameter: 6.0 km · Perihelion: 1.543 AU
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Shoemaker-Levy
Diameter: 5.8 km · Perihelion: 1.933 AU
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Johnson
Diameter: 5.74 km · Perihelion: 2.005 AU
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Ashbrook-Jackson
Diameter: 5.6 km · Perihelion: 2.81 AU
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Chernykh
Diameter: 5.6 km · Perihelion: 2.326 AU
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Takamizawa
Diameter: 5.4 km · Perihelion: 1.672 AU
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Pons-Winnecke
Diameter: 5.2 km · Perihelion: 1.239 AU
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WISE
Diameter: 4.87 km · Perihelion: 2.57 AU
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Borrelly
Diameter: 4.8 km · Perihelion: 1.306 AU
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Shoemaker-Levy
Diameter: 4.8 km · Perihelion: 1.831 AU
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Harrington
Diameter: 4.8 km · Perihelion: 1.699 AU
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Encke
Diameter: 4.8 km · Perihelion: 0.339 AU
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Harrington
Diameter: 4.8 km · Perihelion: 1.568 AU
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Wolf
Diameter: 4.66 km · Perihelion: 2.743 AU
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Shoemaker-Holt
Diameter: 4.6 km · Perihelion: 3.047 AU
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Kohoutek
Diameter: 4.6 km · Perihelion: 1.785 AU
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Whipple
Diameter: 4.56 km · Perihelion: 3.089 AU
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Tuttle
Diameter: 4.5 km · Perihelion: 1.027 AU
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Smirnova-Chernykh
Diameter: 4.46 km · Perihelion: 3.549 AU
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Klemola
Diameter: 4.4 km · Perihelion: 1.762 AU
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Howell
Diameter: 4.4 km · Perihelion: 1.353 AU
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Hartley
Diameter: 4.3 km · Perihelion: 2.464 AU
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McNaught-Hughes
Diameter: 4.2 km · Perihelion: 1.824 AU
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Hyakutake
Diameter: 4.2 km · Perihelion: 0.23 AU
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Vaisala
Diameter: 4.2 km · Perihelion: 1.802 AU
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Wild
Diameter: 4.0 km · Perihelion: 1.596 AU
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Shoemaker-Levy
Diameter: 3.8 km · Perihelion: 2.717 AU
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Tempel-Tuttle
Diameter: 3.6 km · Perihelion: 0.976 AU
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Wolf-Harrington
Diameter: 3.6 km · Perihelion: 2.418 AU
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Faye
Diameter: 3.54 km · Perihelion: 1.578 AU
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Holmes
Diameter: 3.42 km · Perihelion: 2.066 AU
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Metcalf-Brewington
Diameter: 3.4 km · Perihelion: 2.607 AU
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Churyumov-Gerasimenko
Diameter: 3.4 km · Perihelion: 1.243 AU
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Shoemaker-Holt
Diameter: 3.24 km · Perihelion: 3.597 AU
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Reinmuth
Diameter: 3.22 km · Perihelion: 2.114 AU
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IRAS
Diameter: 3.2 km · Perihelion: 1.713 AU
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d'Arrest
Diameter: 3.2 km · Perihelion: 1.355 AU
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Swift-Gehrels
Diameter: 3.2 km · Perihelion: 1.393 AU
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Ciffreo
Diameter: 3.2 km · Perihelion: 1.526 AU
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Shoemaker
Diameter: 3.2 km · Perihelion: 1.969 AU
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Slaughter-Burnham
Diameter: 3.12 km · Perihelion: 2.506 AU
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Kojima
Diameter: 3.0 km · Perihelion: 2.007 AU
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Kopff
Diameter: 3.0 km · Perihelion: 1.555 AU
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Mueller
Diameter: 3.0 km · Perihelion: 2.744 AU
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Lemmon
Diameter: 2.983 km · Perihelion: 2.501 AU
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Wild
Diameter: 2.9 km · Perihelion: 1.953 AU
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Russell
Diameter: 2.8 km · Perihelion: 2.22 AU
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du Toit-Hartley
Diameter: 2.8 km · Perihelion: 1.231 AU
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Grigg-Skjellerup
Diameter: 2.6 km · Perihelion: 1.09 AU
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Harrington-Abell
Diameter: 2.6 km · Perihelion: 1.775 AU
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Daniel
Diameter: 2.6 km · Perihelion: 2.16 AU
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Schaumasse
Diameter: 2.6 km · Perihelion: 1.185 AU
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Shajn-Schaldach
Diameter: 2.4 km · Perihelion: 2.126 AU
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Sanguin
Diameter: 2.38 km · Perihelion: 1.808 AU
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Maury
Diameter: 2.22 km · Perihelion: 2.057 AU
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Spitaler
Diameter: 2.2 km · Perihelion: 2.119 AU
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Singer Brewster
Diameter: 2.2 km · Perihelion: 2.05 AU
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Neujmin
Diameter: 2.2 km · Perihelion: 2.013 AU
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Kowal
Diameter: 2.0 km · Perihelion: 1.073 AU
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Giacobini-Zinner
Diameter: 2.0 km · Perihelion: 1.013 AU
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Forbes
Diameter: 1.92 km · Perihelion: 1.611 AU
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Arend
Diameter: 1.9 km · Perihelion: 1.918 AU
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Schuster
Diameter: 1.88 km · Perihelion: 1.541 AU
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Giclas
Diameter: 1.8 km · Perihelion: 1.72 AU
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Urata-Niijima
Diameter: 1.8 km · Perihelion: 1.455 AU
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NEAT
Diameter: 1.7 km · Perihelion: 1.652 AU
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Spacewatch
Diameter: 1.6 km · Perihelion: 1.523 AU
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Hartley
Diameter: 1.6 km · Perihelion: 1.065 AU
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Honda-Mrkos-Pajdusakova
Diameter: 1.6 km · Perihelion: 0.533 AU
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La Sagra
Diameter: 1.6 km · Perihelion: 2.618 AU
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Kearns-Kwee
Diameter: 1.58 km · Perihelion: 2.352 AU
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Wiseman-Skiff
Diameter: 1.56 km · Perihelion: 1.579 AU
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Gehrels
Diameter: 1.46 km · Perihelion: 3.626 AU
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Tuttle-Giacobini-Kresak
Diameter: 1.4 km · Perihelion: 1.045 AU
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Clark
Diameter: 1.36 km · Perihelion: 1.587 AU
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Wirtanen
Diameter: 1.2 km · Perihelion: 1.055 AU
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