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Comets

Browse and discover detailed information about 199 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 11P/Tempel-Swift-LINEAR

11P/Tempel-Swift-LINEAR
R.A: 23h 43m 42s   Dec: +24° 10’ 41”
Observed Magnitude 16.4 (COBS)
Estimated Magnitude 16.6 (JPL)  brightening
in Pegasus   object currently below the horizon

Comet C/2019 K7 (Smith)

C/2019 K7 (Smith)
R.A: 18h 25m 42s   Dec: +18° 56’ 23”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.5 (JPL)  fading
in Hercules   current altitude less than 30 degrees above the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 23h 19m 23s   Dec: -21° 46’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.8 (JPL) 
in Aquarius   object currently below the horizon

Comet C/2020 N1 (PANSTARRS)

C/2020 N1 (PANSTARRS)
R.A: 23h 34m 41s   Dec: +49° 19’ 13”
Observed Magnitude 17.1 (COBS)
Estimated Magnitude 16.8 (JPL)  brightening
in Andromeda   current altitude less than 30 degrees above the horizon

Comet C/2019 T4 (ATLAS)

C/2019 T4 (ATLAS)
R.A: 08h 27m 05s   Dec: -33° 54’ 53”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.9 (JPL)  brightening
in Pyxis   object currently below the horizon

Comet C/2019 T3 (ATLAS)

C/2019 T3 (ATLAS)
R.A: 22h 17m 33s   Dec: +66° 08’ 09”
Observed Magnitude 16.9 (COBS)
Estimated Magnitude 17.5 (JPL) 
in Cepheus   current altitude greater than 30 degrees above the horizon

Comet 28P/Neujmin 1

28P/Neujmin 1
R.A: 16h 19m 42s   Dec: -32° 14’ 17”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.1 (JPL)  brightening
in Scorpius   object currently below the horizon

Comet 297P/Beshore (2008 J2)

297P/Beshore (2008 J2)
R.A: 13h 48m 34s   Dec: -03° 37’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.1 (JPL)  brightening
in Virgo   current altitude greater than 30 degrees above the horizon

Comet C/2014 F3 (Sheppard-Trujillo)

C/2014 F3 (Sheppard-Trujillo)
R.A: 20h 17m 09s   Dec: -21° 30’ 28”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.6 (JPL)  fading
in Capricornus   object currently below the horizon

Comet C/2017 Y2 (PANSTARRS)

C/2017 Y2 (PANSTARRS)
R.A: 17h 17m 53s   Dec: -00° 37’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.9 (JPL) 
in Ophiucus   current altitude less than 30 degrees above the horizon

Comet C/2020 O2 (Amaral)

C/2020 O2 (Amaral)
R.A: 15h 38m 19s   Dec: -41° 55’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.0 (JPL) 
in Lupus   object currently below the horizon

Comet C/2019 K1 (ATLAS)

C/2019 K1 (ATLAS)
R.A: 05h 43m 15s   Dec: +08° 29’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.1 (JPL) 
in Orion   object currently below the horizon

Comet 117P/Helin-Roman-Alu 1

117P/Helin-Roman-Alu 1
R.A: 12h 30m 06s   Dec: +03° 33’ 50”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.1 (JPL)  brightening
in Virgo   current altitude greater than 30 degrees above the horizon

Comet 10P/Tempel 2

10P/Tempel 2
R.A: 15h 01m 25s   Dec: -09° 19’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.2 (JPL)  brightening
in Libra   current altitude less than 30 degrees above the horizon

Comet 110P/Hartley 3

110P/Hartley 3
R.A: 23h 23m 57s   Dec: +13° 14’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.3 (JPL) 
in Pegasus   object currently below the horizon

Comet C/2020 H6 (ATLAS)

C/2020 H6 (ATLAS)
R.A: 13h 24m 53s   Dec: -28° 30’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.3 (JPL) 
in Hydra   current altitude less than 30 degrees above the horizon

Comet C/2019 B3 (PANSTARRS)

C/2019 B3 (PANSTARRS)
R.A: 12h 44m 53s   Dec: -70° 26’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.3 (JPL) 
in Musca   object currently below the horizon

Comet C/2020 H4 (Leonard)

C/2020 H4 (Leonard)
R.A: 10h 50m 03s   Dec: +02° 43’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.3 (JPL)  fading
in Sextans   current altitude greater than 30 degrees above the horizon

Comet ATLAS (C/2019 Y4)

C/2019 Y4 (ATLAS)
R.A: 07h 28m 50s   Dec: -07° 42’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.4 (JPL)  fading
in Monoceros   current altitude less than 30 degrees above the horizon

Comet C/2020 K8 (Catalina-ATLAS)

C/2020 K8 (Catalina-ATLAS)
R.A: 12h 56m 30s   Dec: -07° 03’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.4 (JPL)  fading
in Virgo   current altitude greater than 30 degrees above the horizon
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