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Comets

Browse and discover detailed information about 169 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 T3 (ATLAS)

C/2017 T3 (ATLAS)
R.A: 14h 59m 56s   Dec: +03° 59’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.8 (JPL)  fading
in Virgo   object currently below the horizon

Comet C/2017 Y2 (PANSTARRS)

C/2017 Y2 (PANSTARRS)
R.A: 21h 30m 03s   Dec: +48° 04’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.9 (JPL)  brightening
in Cygnus   current altitude greater than 30 degrees above the horizon

Comet 38P/Stephan-Oterma

38P/Stephan-Oterma
R.A: 10h 33m 29s   Dec: +27° 03’ 40”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.9 (JPL)  fading
in Leo   object currently below the horizon

Comet C/2015 V2 (Johnson)

C/2015 V2 (Johnson)
R.A: 02h 24m 38s   Dec: -33° 16’ 19”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.1 (JPL)  fading
in Fornax   object currently below the horizon

Comet C/2019 B3 (PANSTARRS)

C/2019 B3 (PANSTARRS)
R.A: 11h 17m 41s   Dec: -39° 17’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.1 (JPL) 
in Centaurus   object currently below the horizon

Comet C/2016 Q2 (PANSTARRS)

C/2016 Q2 (PANSTARRS)
R.A: 20h 19m 57s   Dec: +21° 03’ 05”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.3 (JPL) 
in Sagitta   current altitude greater than 30 degrees above the horizon

Comet C/2019 H1 (NEOWISE)

C/2019 H1
R.A: 16h 38m 14s   Dec: +51° 40’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.3 (JPL)  fading
in Draco   current altitude greater than 30 degrees above the horizon

Comet 117P/Helin-Roman-Alu 1

117P/Helin-Roman-Alu 1
R.A: 08h 31m 52s   Dec: +26° 16’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.4 (JPL) 
in Cancer   object currently below the horizon

Comet C/2019 E3 (ATLAS)

C/2019 E3 (ATLAS)
R.A: 09h 55m 50s   Dec: -34° 18’ 02”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.4 (JPL) 
in Antlia   object currently below the horizon

Comet C/2016 N4 (MASTER)

C/2016 N4 (MASTER)
R.A: 11h 13m 32s   Dec: +38° 02’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.4 (JPL)  fading
in Ursa Major   current altitude less than 30 degrees above the horizon

Comet 48P/Johnson

48P/Johnson
R.A: 04h 32m 17s   Dec: +14° 57’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.8 (JPL)  fading
in Taurus   current altitude less than 30 degrees above the horizon

Comet 60P/Tsuchinshan 2

60P/Tsuchinshan 2
R.A: 12h 06m 40s   Dec: -04° 40’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.4 (JPL)  fading
in Virgo   object currently below the horizon

Comet 21P/Giacobini-Zinner

21P/Giacobini-Zinner
R.A: 08h 21m 55s   Dec: -03° 09’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.5 (JPL)  fading
in Hydra   object currently below the horizon

Comet 49P/Arend-Rigaux

49P/Arend-Rigaux
R.A: 13h 32m 01s   Dec: +14° 15’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.6 (JPL)  fading
in Virgo   object currently below the horizon

Comet 28P/Neujmin 1

28P/Neujmin 1
R.A: 12h 27m 29s   Dec: -12° 35’ 17”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.6 (JPL) 
in Corvus   object currently below the horizon

Comet Encke (2P/Encke)

Encke's Comet
R.A: 00h 23m 02s   Dec: +06° 20’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.8 (JPL)  brightening
in Pisces   current altitude greater than 30 degrees above the horizon

Comet C/2018 Y1 (Iwamoto)

C/2018 Y1 (Iwamoto)
R.A: 04h 41m 50s   Dec: +35° 50’ 11”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.8 (JPL)  fading
in Auriga   current altitude less than 30 degrees above the horizon

Comet 17P/Holmes

17P/Holmes
R.A: 12h 57m 52s   Dec: -28° 59’ 42”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.0 (JPL) 
in Hydra   object currently below the horizon

Comet 119P/Parker-Hartley

119P/Parker-Hartley
R.A: 17h 18m 48s   Dec: -20° 34’ 58”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.0 (JPL) 
in Ophiucus   object currently below the horizon

Comet C/2013 YG46 (Spacewatch)

C/2013 YG46 (Spacewatch)
R.A: 06h 18m 28s   Dec: +28° 06’ 02”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.0 (JPL) 
in Auriga   current altitude less than 30 degrees above the horizon
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