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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 C/2021 K1 (ATLAS)

C/2021 K1 (ATLAS)
R.A: 05h 02m 50s   Dec: +05° 04’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.5 (JPL)  fading
in Orion   object currently below the horizon

Comet 52P/Harrington-Abell

52P/Harrington-Abell
R.A: 14h 18m 55s   Dec: -22° 04’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.5 (JPL)  fading
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2021 C3 (Catalina)

C/2021 C3 (Catalina)
R.A: 04h 05m 45s   Dec: +81° 32’ 38”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.5 (JPL)  fading
in Cepheus   current altitude greater than 30 degrees above the horizon

Comet 290P/Jager

290P/Jager
R.A: 20h 27m 28s   Dec: -16° 02’ 56”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.6 (JPL) 
in Capricornus   object currently below the horizon

Comet 104P/Kowal 2

104P/Kowal 2
R.A: 13h 09m 13s   Dec: -07° 49’ 39”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.6 (JPL)  fading
in Virgo   current altitude greater than 30 degrees above the horizon

Comet 15P/Finlay

15P/Finlay
R.A: 10h 37m 50s   Dec: +13° 04’ 57”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL) 
in Leo   current altitude greater than 30 degrees above the horizon

Comet 21P/Giacobini-Zinner

21P/Giacobini-Zinner
R.A: 13h 07m 17s   Dec: -05° 19’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL) 
in Virgo   current altitude greater than 30 degrees above the horizon

Comet 226P/Pigott-LINEAR-Kowalski

226P/Pigott-LINEAR-Kowalski
R.A: 16h 12m 18s   Dec: -44° 39’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL) 
in Norma   object currently below the horizon

Comet 48P/Johnson

48P/Johnson
R.A: 11h 45m 47s   Dec: +11° 01’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL)  brightening
in Leo   current altitude greater than 30 degrees above the horizon

Comet ATLAS (C/2019 Y4)

C/2019 Y4 (ATLAS)
R.A: 07h 24m 03s   Dec: +06° 41’ 29”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL) 
in Canis Minoris   current altitude less than 30 degrees above the horizon

Comet C/2021 U5 (Catalina)

C/2021 U5 (Catalina)
R.A: 13h 57m 07s   Dec: +04° 53’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.8 (JPL)  fading
in Virgo   current altitude greater than 30 degrees above the horizon

Comet 53P/Van Biesbroeck

53P/Van Biesbroeck
R.A: 07h 29m 06s   Dec: +17° 14’ 24”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.8 (JPL) 
in Gemini   current altitude less than 30 degrees above the horizon

Comet 57P/duToit-Neujmin-Delporte

57P/duToit-Neujmin-Delporte
R.A: 04h 49m 33s   Dec: +19° 47’ 42”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL)  fading
in Taurus   current altitude less than 30 degrees above the horizon

Comet 364P/2018 A2 (PANSTARRS)

364P/2018 A2 (PANSTARRS)
R.A: 09h 49m 41s   Dec: +23° 44’ 54”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL)  brightening
in Leo   current altitude greater than 30 degrees above the horizon

Comet 269P/Jedicke

269P/Jedicke
R.A: 17h 59m 12s   Dec: -19° 33’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL)  fading
in Sagittarius   object currently below the horizon

Comet 193P/LINEAR-NEAT

193P/LINEAR-NEAT
R.A: 07h 16m 15s   Dec: +32° 24’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL)  fading
in Gemini   current altitude greater than 30 degrees above the horizon

Comet 209P/LINEAR

209P/LINEAR
R.A: 03h 57m 45s   Dec: +15° 01’ 30”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.1 (JPL)  brightening
in Taurus   object currently below the horizon

2014 UN271

16P/Brooks 2
R.A: 10h 50m 35s   Dec: +08° 03’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.1 (JPL) 
in Leo   current altitude greater than 30 degrees above the horizon

Comet 294P/LINEAR

294P/LINEAR
R.A: 23h 46m 47s   Dec: +18° 30’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.2 (JPL) 
in Pegasus   object currently below the horizon

Comet C/2020 M3 (ATLAS)

C/2020 M3 (ATLAS)
R.A: 12h 23m 09s   Dec: +19° 39’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.4 (JPL) 
in Coma   current altitude greater than 30 degrees above the horizon
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