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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 17P/Holmes

17P/Holmes
R.A: 09h 17m 13s   Dec: +23° 20’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.8 (JPL) 
in Cancer   current altitude greater than 30 degrees above the horizon

Comet C/2014 F3 (Sheppard-Trujillo)

C/2014 F3 (Sheppard-Trujillo)
R.A: 00h 39m 13s   Dec: +10° 21’ 50”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.8 (JPL) 
in Pisces   object currently below the horizon

Comet 319P/Catalina-McNaught

319P/Catalina-McNaught
R.A: 05h 42m 14s   Dec: +08° 48’ 08”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.9 (JPL)  fading
in Orion   object currently below the horizon

Comet C/2021 A7 (NEOWISE)

C/2021 A7 (NEOWISE)
R.A: 17h 18m 20s   Dec: +48° 58’ 42”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.0 (JPL)  fading
in Hercules   current altitude greater than 30 degrees above the horizon

Comet 49P/Arend-Rigaux

49P/Arend-Rigaux
R.A: 18h 27m 56s   Dec: -19° 18’ 19”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.1 (JPL)  fading
in Sagittarius   object currently below the horizon

Comet 325P/Yang-Gao

325P/Yang-Gao
R.A: 20h 35m 02s   Dec: +04° 39’ 41”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.2 (JPL)  fading
in Delphinus   object currently below the horizon

Comet C/2020 K5 (PANSTARRS)

C/2020 K5 (PANSTARRS)
R.A: 06h 41m 17s   Dec: +29° 33’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.2 (JPL) 
in Gemini   current altitude less than 30 degrees above the horizon

Comet 144P/Kushida

144P/Kushida
R.A: 20h 50m 32s   Dec: -13° 00’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.3 (JPL) 
in Aquarius   object currently below the horizon

Comet C/2021 O1 (Nishimura)

C/2021 O1 (Nishimura)
R.A: 15h 41m 09s   Dec: -31° 52’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.3 (JPL)  fading
in Lupus   current altitude less than 30 degrees above the horizon

Comet 26P/Grigg-Skjellerup

26P/Grigg-Skjellerup
R.A: 05h 11m 52s   Dec: +08° 35’ 29”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.4 (JPL)  brightening
in Orion   object currently below the horizon

Comet 156P/Russell-LINEAR

156P/Russell-LINEAR
R.A: 12h 53m 03s   Dec: +00° 39’ 02”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.6 (JPL) 
in Virgo   current altitude greater than 30 degrees above the horizon

Comet 46P/Wirtanen

46P/Wirtanen
R.A: 17h 48m 11s   Dec: -26° 53’ 58”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.8 (JPL) 
in Sagittarius   object currently below the horizon

Comet 78P/Gehrels 2

78P/Gehrels 2
R.A: 14h 18m 06s   Dec: -12° 46’ 37”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.8 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2021 A2

C/2021 A2
R.A: 19h 53m 13s   Dec: +58° 25’ 17”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.8 (JPL) 
in Cygnus   current altitude greater than 30 degrees above the horizon

Comet C/2020 T4 (PANSTARRS)

C/2020 T4 (PANSTARRS)
R.A: 14h 49m 38s   Dec: -15° 11’ 40”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 22.9 (JPL)  fading
in Libra   current altitude less than 30 degrees above the horizon

Comet 6P/d'Arrest

6P/d'Arrest
R.A: 06h 59m 22s   Dec: +07° 01’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.2 (JPL) 
in Monoceros   object currently below the horizon

Comet 14P/Wolf

14P/Wolf
R.A: 12h 35m 48s   Dec: -08° 54’ 01”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.3 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon

Comet 217P/LINEAR

217P/LINEAR
R.A: 13h 51m 25s   Dec: +00° 20’ 44”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.4 (JPL)  brightening
in Virgo   current altitude greater than 30 degrees above the horizon

Comet C/2021 O3 (PANSTARRS)

C/2021 O3 (PANSTARRS)
R.A: 16h 39m 57s   Dec: +28° 20’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.4 (JPL)  fading
in Hercules   current altitude greater than 30 degrees above the horizon

Comet C/2020 N1 (PANSTARRS)

C/2020 N1 (PANSTARRS)
R.A: 14h 51m 01s   Dec: -36° 20’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.5 (JPL)  fading
in Centaurus   current altitude less than 30 degrees above the horizon
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