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Comets

Browse and discover detailed information about 171 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 P/2017 R1 (PANSTARRS)

P/2017 R1 (PANSTARRS)
R.A: 06h 37m 09s   Dec: +20° 43’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.4 (JPL) 
in Gemini   current altitude greater than 30 degrees above the horizon

Comet 6P/d'Arrest

6P/d'Arrest
R.A: 11h 59m 20s   Dec: +09° 25’ 50”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.6 (JPL)  brightening
in Virgo   current altitude less than 30 degrees above the horizon

Comet 269P/Jedicke

269P/Jedicke
R.A: 16h 31m 23s   Dec: -21° 09’ 45”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.6 (JPL) 
in Ophiucus   object currently below the horizon

Comet 290P/Jager

290P/Jager
R.A: 19h 26m 38s   Dec: -25° 27’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL)  fading
in Sagittarius   object currently below the horizon

Comet C/2017 K4 (ATLAS)

C/2017 K4 (ATLAS)
R.A: 03h 21m 25s   Dec: +35° 31’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL)  fading
in Perseus   current altitude greater than 30 degrees above the horizon

Comet C/2018 E2 (Barros)

C/2018 E2 (Barros)
R.A: 04h 10m 26s   Dec: +22° 08’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL)  fading
in Taurus   current altitude greater than 30 degrees above the horizon

Comet C/2015 X7 (ATLAS)

C/2015 X7 (ATLAS)
R.A: 16h 42m 37s   Dec: +31° 34’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL)  fading
in Hercules   object currently below the horizon

Comet C/2014 Q1 (PANSTARRS)

C/2014 Q1 (PANSTARRS)
R.A: 20h 35m 06s   Dec: -59° 53’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL) 
in Pavo   object currently below the horizon

Comet 185P/Petriew

185P/Petriew
R.A: 13h 50m 22s   Dec: -14° 16’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL)  brightening
in Virgo   object currently below the horizon

Comet P/2017 S5 (ATLAS)

P/2017 S5 (ATLAS)
R.A: 11h 06m 14s   Dec: -07° 29’ 11”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.1 (JPL)  brightening
in Crater   current altitude less than 30 degrees above the horizon

Comet 7P/Pons-Winnecke

7P/Pons-Winnecke
R.A: 08h 48m 13s   Dec: +29° 37’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.1 (JPL)  brightening
in Cancer   current altitude greater than 30 degrees above the horizon

Comet 66P/du Toit

66P/du Toit
R.A: 02h 51m 41s   Dec: +29° 21’ 30”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.2 (JPL)  fading
in Aries   current altitude greater than 30 degrees above the horizon

Comet 37P/Forbes

37P/Forbes
R.A: 03h 58m 02s   Dec: +31° 15’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.3 (JPL)  fading
in Perseus   current altitude greater than 30 degrees above the horizon

Comet C/2017 O1 (ASASSN1)

C/2017 O1 (ASASSN1)
R.A: 13h 02m 14s   Dec: +12° 52’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.4 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2016 T3 (PANSTARRS)

C/2016 T3 (PANSTARRS)
R.A: 14h 17m 56s   Dec: -31° 48’ 30”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.5 (JPL) 
in Centaurus   object currently below the horizon

Comet 19P/Borrelly

19P/Borrelly
R.A: 17h 36m 47s   Dec: -28° 32’ 02”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.5 (JPL) 
in Ophiucus   object currently below the horizon

Comet 209P/LINEAR

209P/LINEAR
R.A: 21h 24m 02s   Dec: -33° 55’ 01”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.7 (JPL)  fading
in Microscopium   object currently below the horizon

Comet C/2018 Y1 (Iwamoto)

C/2018 Y1 (Iwamoto)
R.A: 00h 51m 55s   Dec: +28° 56’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.8 (JPL)  fading
in Pisces   current altitude less than 30 degrees above the horizon

Comet C/2019 H1 (NEOWISE)

C/2019 H1
R.A: 15h 49m 16s   Dec: +57° 30’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.8 (JPL)  fading
in Draco   current altitude less than 30 degrees above the horizon

Comet C/2013 A1 (Siding Spring)

C/2013 A1 (Siding Spring)
R.A: 10h 36m 51s   Dec: +36° 17’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.1 (JPL) 
in Leo Minor   current altitude greater than 30 degrees above the horizon
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