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Comets

Browse and discover detailed information about 207 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/2021 U5 (Catalina)

C/2021 U5 (Catalina)
R.A: 09h 52m 07s   Dec: -26° 27’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.4 (JPL)  brightening
in Hydra   object currently below the horizon

Comet 44P/Reinmuth 2

44P/Reinmuth 2
R.A: 19h 04m 08s   Dec: -21° 52’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.4 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet C/2019 E3 (ATLAS)

C/2019 E3 (ATLAS)
R.A: 09h 24m 27s   Dec: -64° 28’ 23”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.6 (JPL)  brightening
in Carina   object currently below the horizon

Comet 152P/Helin-Lawrence

152P/Helin-Lawrence
R.A: 16h 38m 04s   Dec: -19° 05’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.6 (JPL) 
in Ophiucus   object currently below the horizon

Comet C/2020 K5 (PANSTARRS)

C/2020 K5 (PANSTARRS)
R.A: 05h 11m 07s   Dec: -10° 58’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.6 (JPL)  fading
in Lepus   current altitude less than 30 degrees above the horizon

Comet 6P/d'Arrest

6P/d'Arrest
R.A: 22h 54m 20s   Dec: -25° 39’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.9 (JPL)  fading
in Pisces Austrinus   object currently below the horizon

Comet 378P/McNaught

378P/McNaught
R.A: 23h 24m 12s   Dec: -24° 36’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.9 (JPL)  fading
in Aquarius   object currently below the horizon

Comet C/2021 K1 (ATLAS)

C/2021 K1 (ATLAS)
R.A: 00h 57m 58s   Dec: -12° 40’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.0 (JPL)  fading
in Cetus   current altitude less than 30 degrees above the horizon

Comet C/2021 S3 (PANSTARRS)

C/2021 S3 (PANSTARRS)
R.A: 05h 01m 27s   Dec: -26° 04’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.1 (JPL)  brightening
in Lepus   current altitude less than 30 degrees above the horizon

Comet 65P/Gunn

65P/Gunn
R.A: 07h 37m 40s   Dec: +29° 12’ 44”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.2 (JPL)  brightening
in Gemini   current altitude greater than 30 degrees above the horizon

2014 UN271

16P/Brooks 2
R.A: 08h 25m 12s   Dec: +17° 04’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.3 (JPL) 
in Cancer   current altitude greater than 30 degrees above the horizon

Comet 297P/Beshore

297P/Beshore
R.A: 20h 16m 55s   Dec: -24° 57’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.3 (JPL)  fading
in Capricornus   object currently below the horizon

Comet 297P/Beshore (2008 J2)

297P/Beshore (2008 J2)
R.A: 20h 16m 55s   Dec: -24° 57’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.3 (JPL)  fading
in Capricornus   object currently below the horizon

Comet SWAN (C/2020 F8)

C/2020 F8 (SWAN)
R.A: 04h 28m 55s   Dec: -20° 33’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.4 (JPL)  fading
in Eridanus   current altitude less than 30 degrees above the horizon

Comet 77P/Longmore

77P/Longmore
R.A: 08h 05m 06s   Dec: +52° 31’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.6 (JPL)  brightening
in Lynx   current altitude greater than 30 degrees above the horizon

Comet 88P/Howell

88P/Howell
R.A: 04h 31m 11s   Dec: +23° 25’ 38”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.6 (JPL)  fading
in Taurus   current altitude greater than 30 degrees above the horizon

Comet 7P/Pons-Winnecke

7P/Pons-Winnecke
R.A: 23h 49m 59s   Dec: -27° 37’ 01”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.7 (JPL)  fading
in Sculptor   object currently below the horizon

Comet C/2020 S3 (Erasmus)

C/2020 S3 (Erasmus)
R.A: 23h 07m 05s   Dec: +09° 07’ 31”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.7 (JPL)  fading
in Pegasus   current altitude less than 30 degrees above the horizon

Comet P/2021 V2 (Fuls)

P/2021 V2 (Fuls)
R.A: 04h 08m 46s   Dec: +16° 55’ 45”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.7 (JPL)  brightening
in Taurus   current altitude greater than 30 degrees above the horizon

Comet C/2014 UN271 (Bernardinelli-Bernstein)

C/2014 UN271 (Bernardinelli-Bernstein)
R.A: 02h 16m 17s   Dec: -57° 05’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 19.9 (JPL) 
in Horologium   object currently below the horizon
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