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Comets

Browse and discover detailed information about 175 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/1995 O1 (Hale-Bopp)

C/1995 O1 (Hale-Bopp)
R.A: 22h 38m 48s   Dec: -84° 11’ 43”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.3 (JPL) 
in Octans   object currently below the horizon

Comet Halley (1P/Halley)

Halley's Comet
R.A: 08h 21m 51s   Dec: +01° 53’ 31”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.5 (JPL) 
in Hydra   object currently below the horizon

Comet C/2019 H1 (NEOWISE)

C/2019 H1 (NEOWISE)
R.A: 16h 57m 15s   Dec: +73° 44’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.8 (JPL)  fading
in Draco   current altitude greater than 30 degrees above the horizon

Comet 96P/Machholz

96P/Machholz
R.A: 19h 09m 11s   Dec: -31° 57’ 09”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.0 (JPL) 
in Sagittarius   object currently below the horizon

Comet 60P/Tsuchinshan 2

60P/Tsuchinshan 2
R.A: 17h 18m 17s   Dec: -24° 05’ 05”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.3 (JPL)  fading
in Ophiucus   current altitude less than 30 degrees above the horizon

Comet C/2018 Y1 (Iwamoto)

C/2018 Y1 (Iwamoto)
R.A: 00h 44m 10s   Dec: +23° 20’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.7 (JPL)  fading
in Andromeda   object currently below the horizon

Comet C/2018 A1 (PANSTARRS)

C/2018 A1 (PANSTARRS)
R.A: 11h 27m 08s   Dec: -26° 19’ 11”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.9 (JPL)  fading
in Hydra   object currently below the horizon

Comet 51P/Harrington

51P/Harrington
R.A: 13h 19m 42s   Dec: -02° 20’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.9 (JPL)  brightening
in Virgo   current altitude greater than 30 degrees above the horizon

Comet 26P/Grigg-Skjellerup

26P/Grigg-Skjellerup
R.A: 23h 31m 01s   Dec: +06° 18’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.9 (JPL)  fading
in Pisces   object currently below the horizon

Comet C/2016 U1 (NEOWISE)

C/2016 U1 (NEOWISE)
R.A: 02h 23m 41s   Dec: -12° 33’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.9 (JPL)  fading
in Cetus   object currently below the horizon

Comet 364P/2018 A2 (PANSTARRS)

364P/2018 A2 (PANSTARRS)
R.A: 03h 06m 35s   Dec: +21° 20’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.9 (JPL)  fading
in Aries   object currently below the horizon

Comet C/2018 R4 (Fuls)

C/2018 R4 (Fuls)
R.A: 02h 08m 04s   Dec: +24° 55’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.3 (JPL)  fading
in Aries   object currently below the horizon

Comet 24P/Schaumasse

24P/Schaumasse
R.A: 19h 56m 22s   Dec: -26° 36’ 09”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 28.4 (JPL) 
in Sagittarius   object currently below the horizon

Comet C/2017 S3 (PANSTARRS)

C/2017 S3 (PANSTARRS)
R.A: 13h 49m 05s   Dec: +57° 39’ 04”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.2 (JPL)  fading
in Ursa Major   current altitude greater than 30 degrees above the horizon

Comet C/2017 T1 (Heinze)

C/2017 T1 (Heinze)
R.A: 19h 42m 02s   Dec: -83° 07’ 39”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.3 (JPL)  fading
in Octans   object currently below the horizon

Comet 8P/Tuttle

8P/Tuttle
R.A: 20h 27m 04s   Dec: +22° 44’ 04”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.5 (JPL)  brightening
in Vulpecula   current altitude less than 30 degrees above the horizon

Comet C/2017 S2 (PANSTARRS)

C/2017 S2 (PANSTARRS)
R.A: 06h 56m 46s   Dec: +32° 46’ 03”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.7 (JPL)  fading
in Gemini   current altitude less than 30 degrees above the horizon

Comet 20D/Westphal

20D/Westphal
R.A: 14h 07m 33s   Dec: -51° 47’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 30.2 (JPL)  brightening
in Centaurus   object currently below the horizon

Comet 18D/Perrine-Mrkos

18D/Perrine-Mrkos
R.A: 13h 36m 22s   Dec: -21° 37’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 30.8 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon

Comet P/2014 L2 (NEOWISE)

P/2014 L2 (NEOWISE)
R.A: 09h 16m 32s   Dec: +14° 26’ 54”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 31.1 (JPL) 
in Cancer   current altitude less than 30 degrees above the horizon
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