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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 C/2017 T2 (PANSTARRS)

C/2017 T2 (PANSTARRS)
R.A: 04h 45m 14s   Dec: +48° 02’ 49”
Observed Magnitude 10.1 (COBS)
Estimated Magnitude 11.2 (JPL)  brightening
in Perseus   current altitude less than 30 degrees above the horizon

Comet C/2018 N2 (ASASSN)

C/2018 N2 (ASASSN)
R.A: 23h 43m 44s   Dec: +39° 10’ 55”
Observed Magnitude 11.3 (COBS)
Estimated Magnitude 13.7 (JPL)  fading
in Andromeda   current altitude greater than 30 degrees above the horizon

Comet 260P/McNaught

260P/McNaught
R.A: 02h 24m 44s   Dec: +47° 53’ 21”
Observed Magnitude 12.7 (COBS)
Estimated Magnitude 15.5 (JPL)  fading
in Andromeda   current altitude greater than 30 degrees above the horizon

Comet C/2018 F4 (PANSTARRS)

C/2018 F4 (PANSTARRS)
R.A: 14h 40m 50s   Dec: -83° 37’ 55”
Observed Magnitude 13.5 (COBS)
Estimated Magnitude 16.6 (JPL) 
in Octans   object currently below the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 21h 23m 50s   Dec: -69° 23’ 35”
Observed Magnitude 14.2 (COBS)
Estimated Magnitude 15.7 (JPL)  fading
in Pavo   object currently below the horizon

Comet 29P/Schwassmann-Wachmann 1

29P/Schwassmann-Wachmann 1
R.A: 00h 24m 59s   Dec: +13° 04’ 39”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.3 (JPL)  fading
in Pisces   current altitude less than 30 degrees above the horizon

Comet 68P/Klemola

68P/Klemola
R.A: 21h 02m 41s   Dec: -14° 34’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.8 (JPL)  fading
in Capricornus   current altitude less than 30 degrees above the horizon

Comet C/2019 K1 (ATLAS)

C/2019 K1
R.A: 16h 26m 10s   Dec: -59° 48’ 43”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.8 (JPL)  brightening
in Norma   object currently below the horizon

Comet C/2019 Q4 (Borisov)

C/2019 Q4
R.A: 11h 23m 26s   Dec: -16° 05’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.3 (JPL)  brightening
in Crater   object currently below the horizon

Comet C/2017 B3 (LINEAR)

C/2017 B3 (LINEAR)
R.A: 22h 53m 59s   Dec: -30° 03’ 02”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.3 (JPL)  fading
in Pisces Austrinus   current altitude less than 30 degrees above the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 20h 53m 44s   Dec: -30° 18’ 32”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.5 (JPL) 
in Microscopium   current altitude less than 30 degrees above the horizon

Comet C/2016 M1 (PANSTARRS)

C/2016 M1 (PANSTARRS)
R.A: 06h 28m 21s   Dec: -34° 29’ 08”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.8 (JPL)  fading
in Columba   object currently below the horizon

Comet 78P/Gehrels 2

78P/Gehrels 2
R.A: 09h 38m 57s   Dec: +06° 07’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.8 (JPL) 
in Hydra   object currently below the horizon

Comet C/2019 K7 (Smith)

C/2019 K7
R.A: 20h 06m 02s   Dec: -20° 29’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.9 (JPL) 
in Sagittarius   current altitude less than 30 degrees above the horizon

Comet C/2019 N1 (ATLAS)

C/2019 N1
R.A: 17h 18m 22s   Dec: +61° 36’ 39”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.9 (JPL)  brightening
in Draco   current altitude greater than 30 degrees above the horizon

Comet C/2017 M4 (ATLAS)

C/2017 M4 (ATLAS)
R.A: 14h 23m 44s   Dec: -56° 12’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.9 (JPL)  fading
in Centaurus   object currently below the horizon

Comet C/2018 W2 (Africano)

C/2018 W2 (Africano)
R.A: 21h 39m 50s   Dec: -44° 37’ 44”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.0 (JPL)  fading
in Grus   object currently below the horizon

Comet C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)
R.A: 17h 35m 08s   Dec: +45° 56’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.2 (JPL) 
in Hercules   current altitude greater than 30 degrees above the horizon

Comet C/2019 F1 (ATLAS-Africano)

C/2019 F1
R.A: 14h 35m 01s   Dec: -09° 20’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.6 (JPL) 
in Libra   object currently below the horizon

Comet C/2015 O1 (PANSTARRS)

C/2015 O1 (PANSTARRS)
R.A: 09h 05m 50s   Dec: +23° 40’ 42”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.8 (JPL) 
in Cancer   object currently below the horizon
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