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Comets

Browse and discover detailed information about 176 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 209P/LINEAR

209P/LINEAR
R.A: 00h 10m 56s   Dec: -15° 39’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.3 (JPL)  fading
in Cetus   current altitude less than 30 degrees above the horizon

Comet 26P/Grigg-Skjellerup

26P/Grigg-Skjellerup
R.A: 00h 27m 18s   Dec: +10° 16’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.5 (JPL) 
in Pisces   current altitude greater than 30 degrees above the horizon

Comet 23P/Brorsen-Metcalf

23P/Brorsen-Metcalf
R.A: 17h 26m 20s   Dec: -38° 26’ 39”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.5 (JPL) 
in Scorpius   object currently below the horizon

Comet 364P/2018 A2 (PANSTARRS)

364P/2018 A2 (PANSTARRS)
R.A: 03h 32m 54s   Dec: +22° 53’ 05”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.6 (JPL)  fading
in Taurus   current altitude greater than 30 degrees above the horizon

Comet 252P/LINEAR

252P/LINEAR
R.A: 01h 15m 46s   Dec: +06° 09’ 08”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.6 (JPL)  brightening
in Pisces   current altitude greater than 30 degrees above the horizon

Comet 104P/Kowal 2

104P/Kowal 2
R.A: 19h 06m 51s   Dec: -17° 20’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.7 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet 46P/Wirtanen

46P/Wirtanen
R.A: 15h 58m 42s   Dec: -12° 31’ 54”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.8 (JPL)  fading
in Libra   object currently below the horizon

Comet 168P/Hergenrother

168P/Hergenrother
R.A: 06h 38m 27s   Dec: +42° 32’ 38”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 27.9 (JPL)  fading
in Auriga   current altitude greater than 30 degrees above the horizon

Comet C/2018 R4 (Fuls)

C/2018 R4 (Fuls)
R.A: 02h 32m 30s   Dec: +25° 30’ 57”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 28.0 (JPL)  fading
in Aries   current altitude greater than 30 degrees above the horizon

Comet C/2018 Y1 (Iwamoto)

C/2018 Y1 (Iwamoto)
R.A: 01h 07m 38s   Dec: +22° 54’ 23”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 28.1 (JPL)  fading
in Pisces   current altitude greater than 30 degrees above the horizon

Comet 40P/Vaisala 1

40P/Vaisala 1
R.A: 00h 13m 00s   Dec: -06° 36’ 08”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 28.3 (JPL) 
in Cetus   current altitude less than 30 degrees above the horizon

Comet 24P/Schaumasse

24P/Schaumasse
R.A: 20h 36m 05s   Dec: -25° 29’ 43”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 28.5 (JPL) 
in Capricornus   object currently below the horizon

Comet 8P/Tuttle

8P/Tuttle
R.A: 21h 11m 43s   Dec: +29° 00’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 28.7 (JPL)  brightening
in Cygnus   current altitude less than 30 degrees above the horizon

Comet C/2017 S6 (Catalina)

C/2017 S6 (Catalina)
R.A: 14h 53m 08s   Dec: -47° 25’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.1 (JPL)  fading
in Lupus   object currently below the horizon

Comet C/2018 K1 (Weiland)

C/2018 K1 (Weiland)
R.A: 11h 58m 01s   Dec: +20° 06’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.2 (JPL)  fading
in Coma   object currently below the horizon

Comet C/2019 B1 (Africano)

C/2019 B1 (Africano)
R.A: 01h 29m 07s   Dec: -40° 53’ 44”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.5 (JPL)  fading
in Phoenix   object currently below the horizon

Comet C/2017 T1 (Heinze)

C/2017 T1 (Heinze)
R.A: 00h 12m 44s   Dec: -84° 46’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.7 (JPL) 
in Octans   object currently below the horizon

Comet C/2017 S3 (PANSTARRS)

C/2017 S3 (PANSTARRS)
R.A: 13h 05m 04s   Dec: +64° 27’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 29.9 (JPL)  fading
in Draco   current altitude less than 30 degrees above the horizon

Comet 154P/Brewington

154P/Brewington
R.A: 14h 21m 44s   Dec: -31° 37’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 30.1 (JPL) 
in Centaurus   object currently below the horizon

Comet 20D/Westphal

20D/Westphal
R.A: 14h 00m 48s   Dec: -52° 43’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 30.1 (JPL) 
in Centaurus   object currently below the horizon
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