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Comets

Browse and discover detailed information about 207 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 C/2019 Q4 (Borisov)

C/2019 Q4 (Borisov)
R.A: 17h 19m 53s   Dec: -55° 18’ 09”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.0 (JPL) 
in Ara   object currently below the horizon

Comet 41P/Tuttle-Giacobini-Kresak

41P/Tuttle-Giacobini-Kresak
R.A: 04h 47m 32s   Dec: +09° 42’ 41”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.1 (JPL)  brightening
in Orion   current altitude greater than 30 degrees above the horizon

Comet 123P/West-Hartley

123P/West-Hartley
R.A: 20h 30m 25s   Dec: -32° 56’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.2 (JPL)  fading
in Microscopium   object currently below the horizon

Comet 327P/Van Ness

327P/Van Ness
R.A: 16h 59m 05s   Dec: +04° 09’ 23”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.2 (JPL)  brightening
in Ophiucus   object currently below the horizon

Comet Halley (1P/Halley)

Halley's Comet
R.A: 08h 24m 40s   Dec: +01° 58’ 05”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.6 (JPL) 
in Hydra   current altitude less than 30 degrees above the horizon

Comet Hale-Bopp (C/1995 O1)

C/1995 O1 (Hale-Bopp)
R.A: 21h 58m 43s   Dec: -84° 49’ 19”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.6 (JPL) 
in Octans   object currently below the horizon

Comet 38P/Stephan-Oterma

38P/Stephan-Oterma
R.A: 14h 59m 57s   Dec: -06° 13’ 54”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.6 (JPL)  fading
in Libra   object currently below the horizon

Comet 333P/LINEAR

333P/LINEAR
R.A: 17h 35m 37s   Dec: -48° 00’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.7 (JPL) 
in Ara   object currently below the horizon

Comet 260P/McNaught

260P/McNaught
R.A: 11h 53m 01s   Dec: +01° 19’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.7 (JPL) 
in Virgo   object currently below the horizon

Comet 114P/Wiseman-Skiff

114P/Wiseman-Skiff
R.A: 15h 40m 01s   Dec: -28° 49’ 28”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.8 (JPL)  fading
in Libra   object currently below the horizon

Comet 45P/Honda-Mrkos-Pajdusakova

45P/Honda-Mrkos-Pajdusakova
R.A: 18h 26m 31s   Dec: -24° 11’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.9 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet 210P/Christensen

210P/Christensen
R.A: 16h 30m 06s   Dec: -17° 51’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.9 (JPL)  fading
in Ophiucus   object currently below the horizon

Comet 226P/Pigott-LINEAR-Kowalski

226P/Pigott-LINEAR-Kowalski
R.A: 16h 08m 51s   Dec: -28° 36’ 28”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.1 (JPL)  brightening
in Scorpius   object currently below the horizon

Comet 364P/2018 A2 (PANSTARRS)

364P/2018 A2 (PANSTARRS)
R.A: 06h 59m 01s   Dec: +34° 42’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.3 (JPL)  brightening
in Gemini   current altitude greater than 30 degrees above the horizon

Comet 25D/Neujmin 2 (Lost)

25D/Neujmin 2 (Lost)
R.A: 21h 38m 23s   Dec: -11° 56’ 45”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.4 (JPL)  fading
in Capricornus   object currently below the horizon

Comet 80P/Peters-Hartley

80P/Peters-Hartley
R.A: 08h 33m 40s   Dec: -06° 09’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.4 (JPL)  brightening
in Hydra   current altitude less than 30 degrees above the horizon

Comet 37P/Forbes

37P/Forbes
R.A: 08h 12m 28s   Dec: +23° 59’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.5 (JPL)  brightening
in Cancer   current altitude greater than 30 degrees above the horizon

Comet P/2021 N1 (ZTF)

P/2021 N1 (ZTF)
R.A: 05h 32m 34s   Dec: +35° 56’ 28”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.5 (JPL)  fading
in Auriga   current altitude greater than 30 degrees above the horizon

Comet C/2020 F3 (NEOWISE)

C/2020 F3 (NEOWISE)
R.A: 15h 22m 45s   Dec: -28° 03’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.6 (JPL)  fading
in Libra   object currently below the horizon

Comet 125P/Spacewatch

125P/Spacewatch
R.A: 04h 50m 57s   Dec: +09° 56’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.7 (JPL) 
in Orion   current altitude greater than 30 degrees above the horizon
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