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Comets

Browse and discover detailed information about 114 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/2017 S3 (PANSTARRS)

C/2017 S3 (PANSTARRS)
R.A: 21h 40m 16s   Dec: +51° 23’ 53”
Magnitude 17.2 brightening in Cygnus   current altitude greater than 30 degrees above the horizon

Comet C/2015 ER61 (PANSTARRS)

C/2015 ER61 (PANSTARRS)
R.A: 03h 06m 18s   Dec: +16° 41’ 07”
Magnitude 17.5 fading in Aries   current altitude greater than 30 degrees above the horizon

Comet C/2016 T3 (PANSTARRS)

C/2016 T3 (PANSTARRS)
R.A: 09h 33m 17s   Dec: -15° 54’ 31”
Magnitude 17.6 fading in Hydra   object currently below the horizon

Comet C/2018 A3 (ATLAS)

C/2018 A3 (ATLAS)
R.A: 12h 33m 32s   Dec: +18° 24’ 24”
Magnitude 17.7 brightening in Coma   object currently below the horizon

Comet C/2017 O1 (ASASSN1)

C/2017 O1 (ASASSN1)
R.A: 06h 12m 58s   Dec: +76° 22’ 28”
Magnitude 17.8 fading in Camelopardalis   current altitude greater than 30 degrees above the horizon

Comet 217P/LINEAR

217P/LINEAR
R.A: 07h 10m 48s   Dec: +21° 28’ 40”
Magnitude 18.4 fading in Gemini   current altitude less than 30 degrees above the horizon

Comet C/2013 YG46 (Spacewatch)

C/2013 YG46 (Spacewatch)
R.A: 02h 08m 23s   Dec: +13° 00’ 43”
Magnitude 18.6 fading in Aries   current altitude greater than 30 degrees above the horizon

Comet 21P/Giacobini-Zinner

21P/Giacobini-Zinner
R.A: 18h 01m 17s   Dec: +00° 35’ 48”
Magnitude 18.8 brightening in Ophiucus   object currently below the horizon

Comet P/2013 CU129 (PANSTARRS)

P/2013 CU129 (PANSTARRS)
R.A: 10h 02m 12s   Dec: +38° 20’ 45”
Magnitude 18.9 brightening in Leo Minor   current altitude less than 30 degrees above the horizon

Comet C/2017 T2 (PANSTARRS)

C/2017 T2 (PANSTARRS)
R.A: 02h 54m 10s   Dec: -11° 34’ 03”
Magnitude 18.9 in Eridanus   current altitude less than 30 degrees above the horizon

Comet 38P/Stephan-Oterma

38P/Stephan-Oterma
R.A: 23h 03m 10s   Dec: -21° 19’ 12”
Magnitude 19.0 brightening in Aquarius   current altitude less than 30 degrees above the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 10h 52m 32s   Dec: +08° 37’ 29”
Magnitude 19.0 brightening in Leo   object currently below the horizon

Comet C/2013 X1 (PANSTARRS)

C/2013 X1 (PANSTARRS)
R.A: 12h 51m 10s   Dec: -23° 47’ 07”
Magnitude 19.1 in Hydra   object currently below the horizon

Comet C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)
R.A: 18h 06m 47s   Dec: +57° 31’ 26”
Magnitude 19.1 in Draco   current altitude greater than 30 degrees above the horizon

Comet C/2018 A1 (PANSTARRS)

C/2018 A1 (PANSTARRS)
R.A: 08h 33m 31s   Dec: +64° 45’ 09”
Magnitude 19.1 fading in Ursa Major   current altitude greater than 30 degrees above the horizon

Comet 117P/Helin-Roman-Alu 1

117P/Helin-Roman-Alu 1
R.A: 05h 35m 00s   Dec: +28° 55’ 48”
Magnitude 19.5 fading in Auriga   current altitude less than 30 degrees above the horizon

Comet C/2013 US10 (CATALINA)

C/2013 US10 (CATALINA)
R.A: 02h 36m 26s   Dec: +41° 05’ 49”
Magnitude 19.6 fading in Andromeda   current altitude greater than 30 degrees above the horizon

Comet 96P/Machholz

96P/Machholz
R.A: 19h 20m 17s   Dec: -17° 47’ 55”
Magnitude 19.7 fading in Sagittarius   object currently below the horizon

Comet 53P/Van Biesbroeck

53P/Van Biesbroeck
R.A: 02h 05m 29s   Dec: +06° 37’ 18”
Magnitude 19.7 fading in Pisces   current altitude greater than 30 degrees above the horizon

Comet C/2016 A3 (PANSTARRS)

C/2016 A3 (PANSTARRS)
R.A: 13h 51m 27s   Dec: -09° 12’ 08”
Magnitude 19.7 in Virgo   object currently below the horizon
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