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Comets

Browse and discover detailed information about 197 of the most interesting comets. Comets are listed in order of decreasing brightness.

Visibility from selected location  = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Comet C/2021 C3 (Catalina)

C/2021 C3 (Catalina)
R.A: 09h 59m 27s   Dec: +42° 02’ 29”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.0 (JPL)  fading
in Ursa Major   current altitude greater than 30 degrees above the horizon

Comet 354P/LINEAR

354P/LINEAR
R.A: 13h 06m 50s   Dec: -15° 51’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.3 (JPL)  fading
in Virgo   object currently below the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 23h 18m 25s   Dec: -01° 55’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.4 (JPL) 
in Pisces   object currently below the horizon

Comet 61P/Shajn-Schaldach

61P/Shajn-Schaldach
R.A: 18h 09m 13s   Dec: -15° 49’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.5 (JPL)  brightening
in Serpens   object currently below the horizon

Comet Encke (2P/Encke)

Encke's Comet
R.A: 23h 00m 09s   Dec: -08° 00’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.8 (JPL)  brightening
in Aquarius   object currently below the horizon

Comet 230P/LINEAR

230P/LINEAR
R.A: 22h 06m 30s   Dec: -17° 58’ 20”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.8 (JPL)  brightening
in Aquarius   object currently below the horizon

Comet P/2017 S5 (ATLAS)

P/2017 S5 (ATLAS)
R.A: 12h 58m 17s   Dec: -17° 36’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.9 (JPL) 
in Virgo   object currently below the horizon

Comet 164P/Christensen

164P/Christensen
R.A: 14h 58m 08s   Dec: -02° 41’ 29”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.0 (JPL)  fading
in Libra   object currently below the horizon

Comet 78P/Gehrels 2

78P/Gehrels 2
R.A: 11h 53m 15s   Dec: -02° 04’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.1 (JPL)  fading
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2021 C5 (PANSTARRS)

C/2021 C5 (PANSTARRS)
R.A: 09h 11m 07s   Dec: +15° 15’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.2 (JPL) 
in Cancer   current altitude greater than 30 degrees above the horizon

Comet C/2020 S3 (Erasmus)

C/2020 S3 (Erasmus)
R.A: 00h 04m 15s   Dec: +15° 05’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.3 (JPL)  fading
in Pegasus   object currently below the horizon

Comet ATLAS (C/2019 Y4)

C/2019 Y4 (ATLAS)
R.A: 06h 13m 29s   Dec: +05° 59’ 30”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.4 (JPL)  fading
in Orion   current altitude greater than 30 degrees above the horizon

Comet 274P/Tombaugh-Tenagra

274P/Tombaugh-Tenagra
R.A: 02h 56m 03s   Dec: +08° 14’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.5 (JPL)  brightening
in Cetus   current altitude less than 30 degrees above the horizon

Comet 81P/Wild 2

81P/Wild 2
R.A: 02h 31m 33s   Dec: +12° 10’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.6 (JPL)  brightening
in Aries   current altitude less than 30 degrees above the horizon

Comet C/2019 U6 (Lemmon)

C/2019 U6 (Lemmon)
R.A: 21h 59m 26s   Dec: +49° 51’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.6 (JPL)  fading
in Cygnus   current altitude less than 30 degrees above the horizon

Comet 77P/Longmore

77P/Longmore
R.A: 04h 30m 35s   Dec: +39° 40’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.7 (JPL) 
in Perseus   current altitude greater than 30 degrees above the horizon

Comet P/2016 J3 (STEREO)

P/2016 J3 (STEREO)
R.A: 15h 25m 55s   Dec: -37° 27’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.8 (JPL)  fading
in Lupus   object currently below the horizon

Comet 49P/Arend-Rigaux

49P/Arend-Rigaux
R.A: 18h 00m 24s   Dec: -10° 21’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.9 (JPL) 
in Serpens   object currently below the horizon

Comet 118P/Shoemaker-Levy 4

118P/Shoemaker-Levy 4
R.A: 22h 29m 03s   Dec: -09° 16’ 42”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.1 (JPL)  brightening
in Aquarius   object currently below the horizon

Comet 32P/Comas Sola

32P/Comas Sola
R.A: 22h 05m 34s   Dec: -22° 16’ 58”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.1 (JPL)  brightening
in Aquarius   object currently below the horizon
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