Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

Comets

Browse and discover detailed information about 210 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 9P/Tempel 1

9P/Tempel 1
R.A: 08h 02m 11s   Dec: +31° 57’ 06”
Observed Magnitude 19.3 (COBS)
Estimated Magnitude 19.7 (JPL)  brightening
in Gemini   current altitude less than 30 degrees above the horizon

Comet C/2020 U4 (PANSTARRS)

C/2020 U4 (PANSTARRS)
R.A: 06h 00m 49s   Dec: +29° 45’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.3 (JPL) 
in Auriga   current altitude less than 30 degrees above the horizon

Comet 284P/McNaught

284P/McNaught
R.A: 19h 08m 57s   Dec: -16° 11’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.4 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet 15P/Finlay

15P/Finlay
R.A: 17h 40m 38s   Dec: -27° 44’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.6 (JPL)  brightening
in Ophiucus   object currently below the horizon

Comet ATLAS (C/2019 Y4)

C/2019 Y4 (ATLAS)
R.A: 05h 54m 42s   Dec: -04° 32’ 39”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.6 (JPL)  fading
in Orion   object currently below the horizon

Comet C/2020 H4 (Leonard)

C/2020 H4 (Leonard)
R.A: 08h 04m 08s   Dec: -42° 40’ 41”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.6 (JPL)  fading
in Puppis   object currently below the horizon

Comet C/2013 YG46 (Spacewatch)

C/2013 YG46 (Spacewatch)
R.A: 09h 55m 46s   Dec: +23° 16’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.7 (JPL)  brightening
in Leo   current altitude greater than 30 degrees above the horizon

Comet 67P/Churyumov-Gerasimenko

67P/Churyumov-Gerasimenko
R.A: 20h 04m 38s   Dec: -23° 18’ 23”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.7 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet Encke (2P/Encke)

Encke's Comet
R.A: 21h 13m 20s   Dec: -18° 38’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.7 (JPL) 
in Capricornus   object currently below the horizon

Comet C/2019 V1 (Borisov)

C/2019 V1 (Borisov)
R.A: 16h 06m 01s   Dec: +46° 12’ 11”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.7 (JPL) 
in Hercules   current altitude greater than 30 degrees above the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 22h 30m 46s   Dec: -14° 03’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.8 (JPL)  fading
in Aquarius   object currently below the horizon

Comet 8P/Tuttle

8P/Tuttle
R.A: 21h 38m 05s   Dec: +34° 38’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.8 (JPL)  brightening
in Cygnus   current altitude less than 30 degrees above the horizon

5D/Brorsen (Lost)

5D/Brorsen (Lost)
R.A: 20h 25m 38s   Dec: -26° 55’ 58”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.8 (JPL) 
in Capricornus   object currently below the horizon

Comet C/2015 O1 (PANSTARRS)

C/2015 O1 (PANSTARRS)
R.A: 07h 28m 47s   Dec: +12° 20’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.9 (JPL) 
in Gemini   current altitude less than 30 degrees above the horizon

Comet 74P/Smirnova-Chernykh

74P/Smirnova-Chernykh
R.A: 20h 28m 11s   Dec: -23° 07’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.9 (JPL) 
in Capricornus   object currently below the horizon

Comet C/2019 U6 (Lemmon)

C/2019 U6 (Lemmon)
R.A: 20h 07m 19s   Dec: +29° 34’ 02”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.9 (JPL)  fading
in Cygnus   current altitude less than 30 degrees above the horizon

Comet 240P/NEAT

240P/NEAT
R.A: 15h 45m 57s   Dec: -08° 13’ 32”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.1 (JPL)  brightening
in Libra   current altitude less than 30 degrees above the horizon

Comet C/2020 S4 (PANSTARRS)

C/2020 S4 (PANSTARRS)
R.A: 02h 47m 41s   Dec: -04° 43’ 50”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.1 (JPL) 
in Eridanus   object currently below the horizon

Comet 119P/Parker-Hartley

119P/Parker-Hartley
R.A: 20h 39m 41s   Dec: -20° 45’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.2 (JPL) 
in Capricornus   object currently below the horizon

Comet 6P/d'Arrest

6P/d'Arrest
R.A: 15h 28m 04s   Dec: -00° 24’ 09”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.5 (JPL)  brightening
in Serpens   current altitude greater than 30 degrees above the horizon
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