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Comets

Browse and discover detailed information about 140 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 46P/Wirtanen

46P/Wirtanen
46P/Wirtanen is visible to the naked eye
R.A: 03h 28m 44s   Dec: +07° 40’ 33”
Observed Magnitude 4.8 (COBS)
Estimated Magnitude 9.6 (JPL)  brightening
in Taurus   object currently below the horizon

Comet 64P/Swift-Gehrels

64P/Swift-Gehrels
64P/Swift-Gehrels is brighter than mag 10
R.A: 02h 09m 52s   Dec: +32° 45’ 56”
Observed Magnitude 9.1 (COBS)
Estimated Magnitude 14.8 (JPL)  fading
in Triangulum   current altitude less than 30 degrees above the horizon

Comet C/2018 V1 (Machholz-Fujikawa-Iwamoto)

C/2018 V1 (Machholz-Fujikawa-Iwamoto)
C/2018 V1 (Machholz-Fujikawa-Iwamoto) is brighter than mag 10
R.A: 18h 51m 27s   Dec: -12° 59’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 9.2 (JPL)  fading
in Scutum   current altitude less than 30 degrees above the horizon

Comet 38P/Stephan-Oterma

38P/Stephan-Oterma
R.A: 08h 23m 47s   Dec: +33° 14’ 33”
Observed Magnitude 10.1 (COBS)
Estimated Magnitude 10.6 (JPL)  fading
in Cancer   object currently below the horizon

Comet C/2016 N6 (PANSTARRS)

C/2016 N6 (PANSTARRS)
R.A: 08h 03m 13s   Dec: -12° 32’ 28”
Observed Magnitude 12.3 (COBS)
Estimated Magnitude 13.4 (JPL) 
in Puppis   object currently below the horizon

Comet 78P/Gehrels 2

78P/Gehrels 2
R.A: 22h 20m 19s   Dec: -07° 00’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.1 (JPL) 
in Aquarius   current altitude less than 30 degrees above the horizon

Comet C/2016 M1 (PANSTARRS)

C/2016 M1 (PANSTARRS)
R.A: 16h 25m 25s   Dec: -80° 59’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.5 (JPL)  fading
in Apus   object currently below the horizon

Comet C/2018 L2 (ATLAS)

C/2018 L2 (ATLAS)
R.A: 17h 59m 13s   Dec: +12° 25’ 04”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.0 (JPL) 
in Ophiucus   current altitude greater than 30 degrees above the horizon

Comet 21P/Giacobini-Zinner

21P/Giacobini-Zinner
R.A: 06h 51m 12s   Dec: -39° 40’ 11”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.7 (JPL)  fading
in Puppis   object currently below the horizon

Comet C/2018 N2 (ASASSN)

C/2018 N2 (ASASSN)
R.A: 01h 12m 49s   Dec: -39° 05’ 54”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.9 (JPL)  brightening
in Sculptor   object currently below the horizon

Comet 29P/Schwassmann-Wachmann 1

29P/Schwassmann-Wachmann 1
R.A: 22h 50m 42s   Dec: -00° 40’ 44”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.0 (JPL) 
in Aquarius   current altitude less than 30 degrees above the horizon

Comet C/2016 R2 (PANSTARRS)

C/2016 R2 (PANSTARRS)
R.A: 14h 55m 56s   Dec: +40° 38’ 40”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.1 (JPL)  fading
in Bootes   current altitude greater than 30 degrees above the horizon

Comet 48P/Johnson

48P/Johnson
R.A: 23h 33m 18s   Dec: -17° 16’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.2 (JPL)  fading
in Aquarius   object currently below the horizon

Comet C/2018 A3 (ATLAS)

C/2018 A3 (ATLAS)
R.A: 11h 07m 21s   Dec: +59° 44’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.4 (JPL)  brightening
in Ursa Major   current altitude greater than 30 degrees above the horizon

Comet C/2017 M4 (ATLAS)

C/2017 M4 (ATLAS)
R.A: 16h 57m 19s   Dec: -06° 55’ 57”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.4 (JPL) 
in Ophiucus   current altitude less than 30 degrees above the horizon

Comet C/2017 B3 (LINEAR)

C/2017 B3 (LINEAR)
R.A: 18h 38m 56s   Dec: -67° 32’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.7 (JPL) 
in Pavo   object currently below the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 18h 02m 50s   Dec: -29° 01’ 31”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.7 (JPL) 
in Sagittarius   current altitude less than 30 degrees above the horizon

Comet C/2015 O1 (PANSTARRS)

C/2015 O1 (PANSTARRS)
R.A: 11h 52m 00s   Dec: +37° 10’ 23”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.8 (JPL)  brightening
in Ursa Major   current altitude less than 30 degrees above the horizon

Comet C/2017 T2 (PANSTARRS)

C/2017 T2 (PANSTARRS)
R.A: 03h 17m 11s   Dec: -05° 24’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.2 (JPL) 
in Eridanus   object currently below the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 11h 30m 14s   Dec: -34° 00’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.3 (JPL)  brightening
in Hydra   object currently below the horizon
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