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Comets

Browse and discover detailed information about 176 of the most interesting comets. Comets are listed in order of decreasing brightness.

Search Comets:
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/2019 Y4 (ATLAS)

C/2019 Y4 (ATLAS)
C/2019 Y4 (ATLAS) is brighter than mag 10
R.A: 08h 09m 51s   Dec: +68° 33’ 42”
Observed Magnitude 8.2 (COBS)
Estimated Magnitude 14.1 (JPL)  brightening
in Ursa Major   current altitude greater than 30 degrees above the horizon

Comet C/2019 Y1 (ATLAS)

C/2019 Y1 (ATLAS)
C/2019 Y1 (ATLAS) is brighter than mag 10
R.A: 00h 14m 34s   Dec: +44° 27’ 13”
Observed Magnitude 8.4 (COBS)
Estimated Magnitude 11.9 (JPL)  fading
in Andromeda   current altitude less than 30 degrees above the horizon

Comet C/2017 T2 (PANSTARRS)

C/2017 T2 (PANSTARRS)
C/2017 T2 (PANSTARRS) is brighter than mag 10
R.A: 02h 55m 23s   Dec: +68° 10’ 24”
Observed Magnitude 8.7 (COBS)
Estimated Magnitude 11.9 (JPL)  brightening
in Cassiopeia   current altitude greater than 30 degrees above the horizon

Comet 210P/Christensen

210P/Christensen
R.A: 01h 32m 01s   Dec: +06° 41’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.3 (JPL)  brightening
in Pisces   object currently below the horizon

Comet C/2018 N2 (ASASSN)

C/2018 N2 (ASASSN)
R.A: 00h 25m 01s   Dec: +53° 09’ 34”
Observed Magnitude 14.1 (COBS)
Estimated Magnitude 15.0 (JPL)  fading
in Cassiopeia   current altitude less than 30 degrees above the horizon

Comet 88P/Howell

88P/Howell
R.A: 13h 30m 27s   Dec: -04° 04’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.4 (JPL)  brightening
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2019 N1 (ATLAS)

C/2019 N1 (ATLAS)
R.A: 18h 31m 37s   Dec: +73° 28’ 00”
Observed Magnitude 15.5 (COBS)
Estimated Magnitude 15.2 (JPL)  brightening
in Draco   current altitude greater than 30 degrees above the horizon

Comet 29P/Schwassmann-Wachmann 1

29P/Schwassmann-Wachmann 1
R.A: 01h 22m 06s   Dec: +17° 03’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.1 (JPL) 
in Pisces   object currently below the horizon

Comet C/2019 F1 (ATLAS-Africano)

C/2019 F1 (ATLAS-Africano)
R.A: 14h 52m 52s   Dec: -18° 16’ 32”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.2 (JPL)  brightening
in Libra   object currently below the horizon

Comet C/2018 F4 (PANSTARRS)

C/2018 F4 (PANSTARRS)
R.A: 02h 02m 29s   Dec: -49° 00’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.3 (JPL) 
in Eridanus   object currently below the horizon

Comet C/2020 A2 (Iwamoto)

C/2020 A2 (Iwamoto)
R.A: 05h 23m 00s   Dec: +51° 51’ 53”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.4 (JPL)  fading
in Auriga   current altitude greater than 30 degrees above the horizon

Comet C/2019 K1 (ATLAS)

C/2019 K1 (ATLAS)
R.A: 03h 17m 25s   Dec: -38° 19’ 20”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.5 (JPL)  fading
in Fornax   object currently below the horizon

Comet C/2019 K7 (Smith)

C/2019 K7 (Smith)
R.A: 20h 53m 26s   Dec: -03° 10’ 30”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.5 (JPL)  brightening
in Aquarius   object currently below the horizon

Comet C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)
R.A: 18h 19m 07s   Dec: +49° 40’ 03”
Observed Magnitude 16.6 (COBS)
Estimated Magnitude 16.7 (JPL)  brightening
in Draco   current altitude less than 30 degrees above the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 22h 58m 41s   Dec: -19° 32’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.8 (JPL) 
in Aquarius   object currently below the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 23h 41m 21s   Dec: -36° 42’ 19”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.0 (JPL)  fading
in Sculptor   object currently below the horizon

Comet C/2017 M4 (ATLAS)

C/2017 M4 (ATLAS)
R.A: 10h 53m 56s   Dec: -75° 52’ 03”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.1 (JPL)  fading
in Chamaleon   object currently below the horizon

Comet C/2017 B3 (LINEAR)

C/2017 B3 (LINEAR)
R.A: 00h 01m 59s   Dec: -10° 15’ 41”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.3 (JPL) 
in Cetus   object currently below the horizon

Comet Encke (2P/Encke)

Encke's Comet
R.A: 00h 57m 24s   Dec: +12° 10’ 37”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.4 (JPL)  brightening
in Pisces   object currently below the horizon

Comet P/2019 Y2 (Fuls)

P/2019 Y2 (Fuls)
R.A: 13h 23m 32s   Dec: +00° 05’ 05”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.4 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon
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