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Comets

Browse and discover detailed information about 210 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 C/2020 Y2 (ATLAS)

C/2020 Y2 (ATLAS)
R.A: 14h 10m 39s   Dec: -16° 32’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.0 (JPL)  brightening
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2020 S8 (Lemmon)

C/2020 S8 (Lemmon)
R.A: 16h 55m 32s   Dec: +16° 39’ 41”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.1 (JPL)  brightening
in Hercules   current altitude greater than 30 degrees above the horizon

Comet C/2019 B3 (PANSTARRS)

C/2019 B3 (PANSTARRS)
R.A: 17h 10m 44s   Dec: -84° 07’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.3 (JPL) 
in Octans   object currently below the horizon

Comet 22P/Kopff

22P/Kopff
R.A: 11h 13m 54s   Dec: +08° 46’ 34”
Observed Magnitude 18.3 (COBS)
Estimated Magnitude 18.7 (JPL)  brightening
in Leo   current altitude less than 30 degrees above the horizon

Comet C/2017 B3 (LINEAR)

C/2017 B3 (LINEAR)
R.A: 23h 52m 01s   Dec: +06° 02’ 44”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.3 (JPL)  fading
in Pisces   current altitude less than 30 degrees above the horizon

Comet C/2020 P1 (NEOWISE)

C/2020 P1 (NEOWISE)
R.A: 15h 52m 14s   Dec: +06° 31’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.4 (JPL)  fading
in Serpens   current altitude greater than 30 degrees above the horizon

Comet 16P/Brooks 2

16P/Brooks 2
R.A: 22h 25m 44s   Dec: -10° 55’ 53”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.5 (JPL)  brightening
in Aquarius   current altitude less than 30 degrees above the horizon

Comet 110P/Hartley 3

110P/Hartley 3
R.A: 00h 13m 37s   Dec: +12° 50’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.6 (JPL) 
in Pisces   current altitude less than 30 degrees above the horizon

Comet Leonard (C/2021 A1)

C/2021 A1 (Leonard)
R.A: 14h 06m 51s   Dec: +45° 18’ 37”
Observed Magnitude 18.8 (COBS)
Estimated Magnitude 18.6 (JPL)  brightening
in Canes Venatici   current altitude greater than 30 degrees above the horizon

Comet C/2020 F2 (ATLAS)

C/2020 F2 (ATLAS)
R.A: 15h 39m 35s   Dec: -13° 45’ 29”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.7 (JPL)  brightening
in Libra   current altitude less than 30 degrees above the horizon

Comet C/2017 M4 (ATLAS)

C/2017 M4 (ATLAS)
R.A: 08h 32m 11s   Dec: -69° 22’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.8 (JPL) 
in Volans   object currently below the horizon

Comet C/2019 E3 (ATLAS)

C/2019 E3 (ATLAS)
R.A: 09h 41m 37s   Dec: -56° 45’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.8 (JPL) 
in Vela   object currently below the horizon

Comet C/2016 Q2 (PANSTARRS)

C/2016 Q2 (PANSTARRS)
R.A: 18h 18m 06s   Dec: +37° 33’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.9 (JPL) 
in Lyra   current altitude greater than 30 degrees above the horizon

Comet C/2020 T4 (PANSTARRS)

C/2020 T4 (PANSTARRS)
R.A: 01h 19m 01s   Dec: +33° 20’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.0 (JPL)  brightening
in Pisces   current altitude less than 30 degrees above the horizon

Comet C/2020 H5 (Robinson)

C/2020 H5 (Robinson)
R.A: 12h 42m 24s   Dec: -37° 33’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.0 (JPL) 
in Centaurus   object currently below the horizon

Comet 65P/Gunn

65P/Gunn
R.A: 04h 29m 04s   Dec: +24° 59’ 53”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.1 (JPL)  fading
in Taurus   object currently below the horizon

Comet C/2019 K1 (ATLAS)

C/2019 K1 (ATLAS)
R.A: 03h 57m 42s   Dec: +20° 09’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.1 (JPL)  fading
in Taurus   object currently below the horizon

Comet C/2020 U5 (PANSTARRS)

C/2020 U5 (PANSTARRS)
R.A: 06h 56m 04s   Dec: +32° 36’ 08”
Observed Magnitude 19.1 (COBS)
Estimated Magnitude 19.1 (JPL)  brightening
in Gemini   object currently below the horizon

Comet C/2020 K5 (PANSTARRS)

C/2020 K5 (PANSTARRS)
R.A: 18h 32m 25s   Dec: -22° 19’ 41”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.1 (JPL)  brightening
in Sagittarius   current altitude less than 30 degrees above the horizon

Comet C/2020 K1 (PANSTARRS)

C/2020 K1 (PANSTARRS)
R.A: 18h 27m 40s   Dec: +39° 31’ 28”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.2 (JPL)  brightening
in Lyra   current altitude greater than 30 degrees above the horizon
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