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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 C/2018 A3 (ATLAS)

C/2018 A3 (ATLAS)
R.A: 11h 09m 36s   Dec: +40° 18’ 30”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.4 (JPL)  brightening
in Ursa Major   current altitude greater than 30 degrees above the horizon

Comet 37P/Forbes

37P/Forbes
R.A: 22h 55m 03s   Dec: +05° 01’ 57”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.6 (JPL)  fading
in Pisces   object currently below the horizon

Comet 65P/Gunn

65P/Gunn
R.A: 22h 48m 18s   Dec: -19° 53’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.8 (JPL)  fading
in Aquarius   object currently below the horizon

Comet C/2017 S3 (PANSTARRS)

C/2017 S3 (PANSTARRS)
R.A: 12h 38m 42s   Dec: +17° 57’ 20”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.8 (JPL)  fading
in Coma   current altitude greater than 30 degrees above the horizon

Comet 49P/Arend-Rigaux

49P/Arend-Rigaux
R.A: 11h 27m 47s   Dec: +11° 03’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.1 (JPL)  fading
in Leo   current altitude greater than 30 degrees above the horizon

Comet C/2015 V2 (Johnson)

C/2015 V2 (Johnson)
R.A: 01h 21m 40s   Dec: -54° 41’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.1 (JPL)  fading
in Phoenix   object currently below the horizon

Comet C/2016 A1 (PANSTARRS)

C/2016 A1 (PANSTARRS)
R.A: 08h 25m 01s   Dec: +58° 28’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.2 (JPL) 
in Lynx   current altitude greater than 30 degrees above the horizon

Comet 26P/Grigg-Skjellerup

26P/Grigg-Skjellerup
R.A: 14h 20m 14s   Dec: -10° 04’ 37”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.2 (JPL)  fading
in Virgo   object currently below the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 11h 05m 47s   Dec: -17° 15’ 11”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.3 (JPL)  brightening
in Crater   current altitude less than 30 degrees above the horizon

Comet C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)
R.A: 17h 13m 29s   Dec: +54° 35’ 37”
Observed Magnitude 17.8 (COBS)
Estimated Magnitude 18.5 (JPL) 
in Draco   current altitude less than 30 degrees above the horizon

Comet 74P/Smirnova-Chernykh

74P/Smirnova-Chernykh
R.A: 13h 37m 21s   Dec: -05° 42’ 41”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.8 (JPL)  fading
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2018 F1 (Grauer)

C/2018 F1 (Grauer)
R.A: 14h 55m 52s   Dec: +12° 47’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.0 (JPL) 
in Bootes   current altitude less than 30 degrees above the horizon

Comet C/2016 N4 (MASTER)

C/2016 N4 (MASTER)
R.A: 12h 29m 31s   Dec: +45° 27’ 20”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.1 (JPL) 
in Canes Venatici   current altitude greater than 30 degrees above the horizon

Comet C/2017 K4 (ATLAS)

C/2017 K4 (ATLAS)
R.A: 00h 44m 59s   Dec: +29° 10’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.1 (JPL)  fading
in Andromeda   current altitude less than 30 degrees above the horizon

Comet C/2018 E1 (ATLAS)

C/2018 E1 (ATLAS)
R.A: 10h 19m 37s   Dec: +00° 51’ 56”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.6 (JPL) 
in Sextans   current altitude greater than 30 degrees above the horizon

Comet C/2018 F4 (PANSTARRS)

C/2018 F4 (PANSTARRS)
R.A: 13h 27m 20s   Dec: -21° 58’ 58”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.9 (JPL)  brightening
in Virgo   object currently below the horizon

Comet 364P/2018 A2 (PANSTARRS)

364P/2018 A2 (PANSTARRS)
R.A: 23h 45m 24s   Dec: -18° 49’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.1 (JPL)  fading
in Aquarius   object currently below the horizon

Comet C/2017 K6 (Jacques)

C/2017 K6 (Jacques)
R.A: 08h 36m 31s   Dec: +45° 03’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.2 (JPL)  fading
in Lynx   current altitude greater than 30 degrees above the horizon

Comet C/2015 ER61 (PANSTARRS)

C/2015 ER61 (PANSTARRS)
R.A: 05h 31m 21s   Dec: +20° 52’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.4 (JPL) 
in Taurus   current altitude greater than 30 degrees above the horizon

Comet C/2018 R3 (Lemmon)

C/2018 R3 (Lemmon)
R.A: 20h 44m 03s   Dec: -07° 25’ 43”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.4 (JPL)  brightening
in Aquarius   object currently below the horizon
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