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Comets

Browse and discover detailed information about 138 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 21P/Giacobini-Zinner

21P/Giacobini-Zinner
21P/Giacobini-Zinner is brighter than mag 10
R.A: 07h 15m 21s   Dec: -16° 45’ 05”
Observed Magnitude 9.4 (COBS)
Estimated Magnitude 12.1 (JPL)  fading
in Canis Majoris   current altitude less than 30 degrees above the horizon

Comet 46P/Wirtanen

46P/Wirtanen
R.A: 01h 57m 51s   Dec: -30° 30’ 09”
Observed Magnitude 10.2 (COBS)
Estimated Magnitude 13.8 (JPL)  brightening
in Fornax   object currently below the horizon

Comet C/2016 M1 (PANSTARRS)

C/2016 M1 (PANSTARRS)
R.A: 14h 35m 56s   Dec: -64° 40’ 27”
Observed Magnitude 10.3 (COBS)
Estimated Magnitude 13.0 (JPL)  fading
in Circinus   object currently below the horizon

Comet 38P/Stephan-Oterma

38P/Stephan-Oterma
R.A: 06h 33m 18s   Dec: +14° 52’ 33”
Observed Magnitude 10.5 (COBS)
Estimated Magnitude 11.3 (JPL)  brightening
in Gemini   current altitude greater than 30 degrees above the horizon

Comet 64P/Swift-Gehrels

64P/Swift-Gehrels
R.A: 00h 34m 21s   Dec: +35° 13’ 34”
Observed Magnitude 10.6 (COBS)
Estimated Magnitude 14.1 (JPL)  brightening
in Andromeda   current altitude less than 30 degrees above the horizon

Comet C/2018 L2 (ATLAS)

C/2018 L2 (ATLAS)
R.A: 15h 49m 18s   Dec: -01° 17’ 43”
Observed Magnitude 10.8 (COBS)
Estimated Magnitude 14.6 (JPL)  brightening
in Serpens   object currently below the horizon

Comet C/2016 N6 (PANSTARRS)

C/2016 N6 (PANSTARRS)
R.A: 09h 00m 13s   Dec: +07° 19’ 05”
Observed Magnitude 12.5 (COBS)
Estimated Magnitude 13.5 (JPL) 
in Cancer   current altitude greater than 30 degrees above the horizon

Comet 48P/Johnson

48P/Johnson
R.A: 22h 32m 56s   Dec: -27° 31’ 26”
Observed Magnitude 12.8 (COBS)
Estimated Magnitude 13.9 (JPL)  fading
in Pisces Austrinus   object currently below the horizon

Comet 78P/Gehrels 2

78P/Gehrels 2
R.A: 21h 21m 44s   Dec: -08° 44’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.1 (JPL) 
in Aquarius   object currently below the horizon

Comet C/2016 R2 (PANSTARRS)

C/2016 R2 (PANSTARRS)
R.A: 13h 01m 29s   Dec: +45° 19’ 46”
Observed Magnitude 13.5 (COBS)
Estimated Magnitude 14.7 (JPL)  fading
in Canes Venatici   current altitude greater than 30 degrees above the horizon

Comet 29P/Schwassmann-Wachmann 1

29P/Schwassmann-Wachmann 1
R.A: 22h 47m 37s   Dec: -00° 32’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.7 (JPL) 
in Aquarius   object currently below the horizon

Comet C/2017 T3 (ATLAS)

C/2017 T3 (ATLAS)
R.A: 14h 09m 05s   Dec: -26° 58’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.0 (JPL)  fading
in Hydra   object currently below the horizon

Comet 66P/du Toit

66P/du Toit
R.A: 00h 03m 11s   Dec: -08° 07’ 41”
Observed Magnitude 15.2 (COBS)
Estimated Magnitude 15.8 (JPL)  fading
in Cetus   object currently below the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 16h 40m 57s   Dec: -26° 40’ 42”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.4 (JPL)  fading
in Scorpius   object currently below the horizon

Comet C/2017 B3 (LINEAR)

C/2017 B3 (LINEAR)
R.A: 15h 07m 22s   Dec: -67° 40’ 31”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.4 (JPL) 
in Triangulum Australis   object currently below the horizon

Comet C/2017 M4 (ATLAS)

C/2017 M4 (ATLAS)
R.A: 16h 24m 33s   Dec: +06° 09’ 11”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.4 (JPL) 
in Hercules   object currently below the horizon

Comet C/2018 N2 (ASASSN)

C/2018 N2 (ASASSN)
R.A: 02h 22m 03s   Dec: -47° 11’ 54”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.5 (JPL) 
in Phoenix   object currently below the horizon

Comet C/2015 O1 (PANSTARRS)

C/2015 O1 (PANSTARRS)
R.A: 11h 58m 53s   Dec: +34° 43’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.9 (JPL) 
in Ursa Major   current altitude greater than 30 degrees above the horizon

Comet 240P/NEAT

240P/NEAT
R.A: 09h 50m 49s   Dec: +28° 44’ 51”
Observed Magnitude 16.0 (COBS)
Estimated Magnitude 16.3 (JPL) 
in Leo   current altitude greater than 30 degrees above the horizon

Comet C/2017 T2 (PANSTARRS)

C/2017 T2 (PANSTARRS)
R.A: 03h 52m 55s   Dec: -05° 33’ 38”
Observed Magnitude 16.1 (COBS)
Estimated Magnitude 16.8 (JPL)  brightening
in Eridanus   current altitude less than 30 degrees above the horizon
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