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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/2013 A1 (Siding Spring)

C/2013 A1 (Siding Spring)
R.A: 10h 11m 01s   Dec: +39° 42’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.5 (JPL) 
in Leo Minor   current altitude less than 30 degrees above the horizon

Comet 19P/Borrelly

19P/Borrelly
R.A: 17h 32m 15s   Dec: -24° 08’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.6 (JPL)  brightening
in Ophiucus   object currently below the horizon

Comet C/2018 A1 (PANSTARRS)

C/2018 A1 (PANSTARRS)
R.A: 10h 17m 27s   Dec: -06° 56’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.7 (JPL)  fading
in Sextans   object currently below the horizon

Comet 96P/Machholz

96P/Machholz
R.A: 19h 29m 37s   Dec: -29° 41’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.7 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet 104P/Kowal 2

104P/Kowal 2
R.A: 17h 42m 31s   Dec: -18° 51’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.8 (JPL)  brightening
in Ophiucus   object currently below the horizon

Comet C/2018 R4 (Fuls)

C/2018 R4 (Fuls)
R.A: 01h 48m 15s   Dec: +21° 33’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.0 (JPL)  fading
in Aries   current altitude greater than 30 degrees above the horizon

Comet C/2017 S3 (PANSTARRS)

C/2017 S3 (PANSTARRS)
R.A: 11h 45m 15s   Dec: +63° 21’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.0 (JPL)  fading
in Ursa Major   current altitude less than 30 degrees above the horizon

Comet C/2018 K1 (Weiland)

C/2018 K1 (Weiland)
R.A: 12h 57m 04s   Dec: +13° 35’ 57”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.0 (JPL)  fading
in Virgo   object currently below the horizon

Comet 333P/LINEAR

333P/LINEAR
R.A: 19h 55m 24s   Dec: -31° 32’ 57”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.1 (JPL) 
in Sagittarius   object currently below the horizon

Comet C/1995 O1 (Hale-Bopp)

C/1995 O1 (Hale-Bopp)
R.A: 23h 54m 02s   Dec: -84° 12’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.1 (JPL) 
in Octans   object currently below the horizon

Comet 134P/Kowal-Vavrova

134P/Kowal-Vavrova
R.A: 01h 12m 31s   Dec: +07° 59’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.2 (JPL) 
in Pisces   current altitude greater than 30 degrees above the horizon

Comet C/2017 S6 (Catalina)

C/2017 S6 (Catalina)
R.A: 16h 22m 42s   Dec: -51° 43’ 17”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.3 (JPL)  fading
in Norma   object currently below the horizon

Comet 364P/2018 A2 (PANSTARRS)

364P/2018 A2 (PANSTARRS)
R.A: 02h 34m 27s   Dec: +14° 28’ 39”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.5 (JPL)  fading
in Aries   current altitude greater than 30 degrees above the horizon

Comet 154P/Brewington

154P/Brewington
R.A: 13h 28m 00s   Dec: -25° 28’ 11”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.5 (JPL) 
in Hydra   object currently below the horizon

Comet Halley (1P/Halley)

Halley's Comet
R.A: 08h 16m 47s   Dec: +02° 39’ 09”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.5 (JPL) 
in Hydra   object currently below the horizon

Comet C/2016 U1 (NEOWISE)

C/2016 U1 (NEOWISE)
R.A: 02h 36m 05s   Dec: -10° 21’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.8 (JPL) 
in Cetus   current altitude less than 30 degrees above the horizon

Comet 7P/Pons-Winnecke

7P/Pons-Winnecke
R.A: 06h 18m 07s   Dec: +27° 14’ 29”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.0 (JPL) 
in Gemini   current altitude less than 30 degrees above the horizon

Comet 226P/Pigott-LINEAR-Kowalski

226P/Pigott-LINEAR-Kowalski
R.A: 14h 07m 51s   Dec: +19° 42’ 57”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.2 (JPL)  fading
in Bootes   object currently below the horizon

Comet C/2017 T1 (Heinze)

C/2017 T1 (Heinze)
R.A: 23h 05m 38s   Dec: -80° 48’ 40”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.2 (JPL)  fading
in Octans   object currently below the horizon

Comet 51P/Harrington

51P/Harrington
R.A: 11h 24m 56s   Dec: +10° 32’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.2 (JPL)  fading
in Leo   object currently below the horizon
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