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Comets

Browse and discover detailed information about 218 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 255P/Levy

255P/Levy
R.A: 10h 27m 46s   Dec: +05° 30’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 10.7 (JPL)  fading
in Sextans   object currently below the horizon

Comet C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)
R.A: 15h 55m 52s   Dec: -30° 47’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 11.4 (JPL) 
in Lupus   current altitude less than 30 degrees above the horizon

Comet 51P/Harrington

51P/Harrington
R.A: 22h 35m 20s   Dec: -22° 03’ 43”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 12.6 (JPL) 
in Aquarius   object currently below the horizon

Comet ZTF (C/2020 V2)

C/2020 V2 (ZTF)
R.A: 10h 40m 41s   Dec: +53° 48’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 12.7 (JPL)  brightening
in Ursa Major   current altitude greater than 30 degrees above the horizon

Comet C/2022 E3 (ZTF)

C/2022 E3 (ZTF)
R.A: 16h 00m 14s   Dec: +28° 50’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.3 (JPL)  brightening
in Corona Borealis   current altitude greater than 30 degrees above the horizon

5D/Brorsen (Lost)

5D/Brorsen (Lost)
R.A: 22h 11m 40s   Dec: -37° 51’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.5 (JPL)  brightening
in Grus   object currently below the horizon

Comet C/2021 P4 (ATLAS)

C/2021 P4 (ATLAS)
R.A: 12h 06m 14s   Dec: -28° 23’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.7 (JPL)  fading
in Hydra   object currently below the horizon

Comet C/2022 P1 (NEOWISE)

C/2022 P1 (NEOWISE)
R.A: 00h 21m 51s   Dec: -26° 51’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.7 (JPL)  brightening
in Sculptor   object currently below the horizon

Comet C/2019 L3 (ATLAS)

C/2019 L3 (ATLAS)
R.A: 09h 27m 07s   Dec: -10° 07’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.1 (JPL) 
in Hydra   object currently below the horizon

Comet 81P/Wild 2

81P/Wild 2
R.A: 10h 05m 06s   Dec: +11° 35’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.4 (JPL)  brightening
in Leo   object currently below the horizon

Comet C/2020 K1 (PANSTARRS)

C/2020 K1 (PANSTARRS)
R.A: 17h 15m 39s   Dec: -06° 30’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.5 (JPL) 
in Ophiucus   current altitude greater than 30 degrees above the horizon

Comet C/2019 T4 (ATLAS)

C/2019 T4 (ATLAS)
R.A: 13h 23m 22s   Dec: -03° 00’ 17”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.5 (JPL)  fading
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2021 E3 (ZTF)

C/2021 E3 (ZTF)
R.A: 10h 11m 25s   Dec: -39° 09’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.0 (JPL)  fading
in Antlia   object currently below the horizon

Comet 117P/Helin-Roman-Alu 1

117P/Helin-Roman-Alu 1
R.A: 18h 40m 33s   Dec: -31° 24’ 29”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.1 (JPL)  fading
in Sagittarius   current altitude less than 30 degrees above the horizon

Comet C/2020 Y2 (ATLAS)

C/2020 Y2 (ATLAS)
R.A: 06h 27m 30s   Dec: -47° 37’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.5 (JPL) 
in Puppis   object currently below the horizon

Comet 118P/Shoemaker-Levy 4

118P/Shoemaker-Levy 4
R.A: 06h 43m 06s   Dec: +12° 43’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.9 (JPL)  brightening
in Gemini   object currently below the horizon

Comet 22P/Kopff

22P/Kopff
R.A: 01h 24m 38s   Dec: +00° 41’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL)  fading
in Cetus   object currently below the horizon

Comet 327P/Van Ness

327P/Van Ness
R.A: 02h 11m 32s   Dec: -16° 46’ 03”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.1 (JPL)  fading
in Cetus   object currently below the horizon

Comet C/2020 S4 (PANSTARRS)

C/2020 S4 (PANSTARRS)
R.A: 08h 19m 48s   Dec: +16° 47’ 17”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.1 (JPL)  brightening
in Cancer   object currently below the horizon

Comet 29P/Schwassmann-Wachmann 1

29P/Schwassmann-Wachmann 1
R.A: 06h 51m 54s   Dec: +28° 56’ 38”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.1 (JPL)  brightening
in Gemini   object currently below the horizon
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