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Comets

Browse and discover detailed information about 148 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/2018 Y1 (Iwamoto)

C/2018 Y1 (Iwamoto)
R.A: 04h 25m 32s   Dec: +33° 32’ 15”
Observed Magnitude 12.3 (COBS)
Estimated Magnitude 18.2 (JPL)  fading
in Perseus   current altitude less than 30 degrees above the horizon

Comet 78P/Gehrels 2

78P/Gehrels 2
R.A: 02h 58m 12s   Dec: +15° 16’ 02”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.2 (JPL)  fading
in Aries   current altitude less than 30 degrees above the horizon

Comet C/2018 N2 (ASASSN)

C/2018 N2 (ASASSN)
R.A: 01h 51m 19s   Dec: -05° 41’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.3 (JPL)  brightening
in Cetus   current altitude less than 30 degrees above the horizon

Comet C/2019 D1 (Flewelling)

C/2019 D1 (Flewelling)
R.A: 21h 19m 36s   Dec: +14° 00’ 53”
Observed Magnitude 14.3 (COBS)
Estimated Magnitude 15.8 (JPL)  brightening
in Pegasus   current altitude greater than 30 degrees above the horizon

Comet C/2017 M4 (ATLAS)

C/2017 M4 (ATLAS)
R.A: 16h 44m 11s   Dec: -35° 18’ 56”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.5 (JPL) 
in Scorpius   object currently below the horizon

Comet 46P/Wirtanen

46P/Wirtanen
R.A: 10h 24m 08s   Dec: +28° 35’ 50”
Observed Magnitude 14.5 (COBS)
Estimated Magnitude 20.5 (JPL)  fading
in Leo Minor   object currently below the horizon

Comet 38P/Stephan-Oterma

38P/Stephan-Oterma
R.A: 09h 22m 39s   Dec: +37° 06’ 03”
Observed Magnitude 14.6 (COBS)
Estimated Magnitude 15.8 (JPL)  fading
in Lynx   object currently below the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 07h 33m 02s   Dec: -55° 35’ 54”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.9 (JPL) 
in Carina   object currently below the horizon

Comet C/2018 R3 (Lemmon)

C/2018 R3 (Lemmon)
R.A: 00h 26m 46s   Dec: +46° 27’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.0 (JPL)  brightening
in Andromeda   current altitude greater than 30 degrees above the horizon

Comet C/2016 M1 (PANSTARRS)

C/2016 M1 (PANSTARRS)
R.A: 05h 02m 04s   Dec: -40° 54’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.0 (JPL)  fading
in Caelum   object currently below the horizon

Comet 29P/Schwassmann-Wachmann 1

29P/Schwassmann-Wachmann 1
R.A: 00h 18m 43s   Dec: +08° 55’ 37”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.3 (JPL) 
in Pisces   current altitude greater than 30 degrees above the horizon

Comet C/2016 R2 (PANSTARRS)

C/2016 R2 (PANSTARRS)
R.A: 15h 30m 59s   Dec: +48° 17’ 25”
Observed Magnitude 15.4 (COBS)
Estimated Magnitude 16.1 (JPL)  fading
in Bootes   current altitude greater than 30 degrees above the horizon

Comet C/2017 T2 (PANSTARRS)

C/2017 T2 (PANSTARRS)
R.A: 03h 30m 26s   Dec: +08° 24’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.4 (JPL)  brightening
in Taurus   current altitude less than 30 degrees above the horizon

Comet C/2017 B3 (LINEAR)

C/2017 B3 (LINEAR)
R.A: 23h 47m 43s   Dec: -47° 40’ 53”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.5 (JPL) 
in Phoenix   object currently below the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 20h 51m 38s   Dec: -28° 55’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.6 (JPL)  brightening
in Microscopium   current altitude less than 30 degrees above the horizon

Comet C/2015 O1 (PANSTARRS)

C/2015 O1 (PANSTARRS)
R.A: 08h 49m 15s   Dec: +38° 45’ 38”
Observed Magnitude 15.6 (COBS)
Estimated Magnitude 16.6 (JPL)  fading
in Lynx   current altitude less than 30 degrees above the horizon

Comet C/2018 W2 (Africano)

C/2018 W2 (Africano)
R.A: 03h 28m 41s   Dec: +72° 08’ 59”
Observed Magnitude 15.6 (COBS)
Estimated Magnitude 15.9 (JPL)  brightening
in Cassiopeia   current altitude greater than 30 degrees above the horizon

Comet C/2016 N6 (PANSTARRS)

C/2016 N6 (PANSTARRS)
R.A: 05h 38m 56s   Dec: -19° 42’ 41”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.9 (JPL)  fading
in Lepus   object currently below the horizon

Comet C/2018 X2 (Fitzsimmons)

C/2018 X2 (Fitzsimmons)
R.A: 06h 05m 41s   Dec: +38° 16’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.1 (JPL)  brightening
in Auriga   current altitude less than 30 degrees above the horizon

Comet C/2018 A3 (ATLAS)

C/2018 A3 (ATLAS)
R.A: 03h 50m 53s   Dec: +51° 44’ 40”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.4 (JPL)  fading
in Perseus   current altitude greater than 30 degrees above the horizon
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