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Comets

Browse and discover detailed information about 211 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 74P/Smirnova-Chernykh

74P/Smirnova-Chernykh
R.A: 23h 53m 34s   Dec: -06° 32’ 56”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.5 (JPL)  brightening
in Aquarius   current altitude greater than 30 degrees above the horizon

Comet SWAN (C/2020 F8)

C/2020 F8 (SWAN)
R.A: 04h 24m 46s   Dec: -13° 44’ 01”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.6 (JPL) 
in Eridanus   object currently below the horizon

Comet 297P/Beshore

297P/Beshore
R.A: 23h 56m 22s   Dec: -09° 26’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.8 (JPL)  fading
in Aquarius   current altitude less than 30 degrees above the horizon

Comet 297P/Beshore (2008 J2)

297P/Beshore (2008 J2)
R.A: 23h 56m 22s   Dec: -09° 26’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.8 (JPL)  fading
in Aquarius   current altitude less than 30 degrees above the horizon

Comet 80P/Peters-Hartley

80P/Peters-Hartley
R.A: 07h 58m 18s   Dec: -06° 03’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.8 (JPL)  brightening
in Monoceros   object currently below the horizon

Comet 17P/Holmes

17P/Holmes
R.A: 06h 29m 03s   Dec: +33° 41’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.8 (JPL)  fading
in Auriga   current altitude less than 30 degrees above the horizon

Comet P/2017 S5 (ATLAS)

P/2017 S5 (ATLAS)
R.A: 18h 28m 45s   Dec: -20° 01’ 20”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 20.9 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet 164P/Christensen

164P/Christensen
R.A: 16h 19m 30s   Dec: -12° 50’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.0 (JPL) 
in Scorpius   object currently below the horizon

Comet C/2020 T4 (PANSTARRS)

C/2020 T4 (PANSTARRS)
R.A: 15h 18m 15s   Dec: +02° 07’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.0 (JPL)  fading
in Serpens   object currently below the horizon

Comet 32P/Comas Sola

32P/Comas Sola
R.A: 23h 25m 55s   Dec: -13° 42’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.0 (JPL)  brightening
in Aquarius   current altitude less than 30 degrees above the horizon

Comet 103P/Hartley 2

103P/Hartley 2
R.A: 10h 30m 50s   Dec: +13° 31’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.1 (JPL) 
in Leo   object currently below the horizon

Comet C/2020 S3 (Erasmus)

C/2020 S3 (Erasmus)
R.A: 00h 29m 00s   Dec: +15° 04’ 08”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.1 (JPL) 
in Pisces   current altitude greater than 30 degrees above the horizon

Comet 156P/Russell-LINEAR

156P/Russell-LINEAR
R.A: 11h 41m 43s   Dec: +13° 44’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.2 (JPL)  fading
in Leo   object currently below the horizon

Comet 237P/LINEAR

237P/LINEAR
R.A: 09h 36m 52s   Dec: -01° 14’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.3 (JPL)  brightening
in Hydra   object currently below the horizon

Comet 354P/LINEAR

354P/LINEAR
R.A: 21h 44m 29s   Dec: -15° 46’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.3 (JPL)  brightening
in Capricornus   current altitude less than 30 degrees above the horizon

Comet 88P/Howell

88P/Howell
R.A: 05h 17m 23s   Dec: +24° 51’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.3 (JPL)  fading
in Taurus   current altitude less than 30 degrees above the horizon

Comet Encke (2P/Encke)

Encke's Comet
R.A: 23h 46m 48s   Dec: +00° 40’ 57”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.4 (JPL)  brightening
in Pisces   current altitude greater than 30 degrees above the horizon

Comet 132P/Helin-Roman-Alu 2

132P/Helin-Roman-Alu 2
R.A: 06h 21m 42s   Dec: +19° 36’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.4 (JPL)  fading
in Gemini   current altitude less than 30 degrees above the horizon

Comet C/2018 A6 (Gibbs)

C/2018 A6 (Gibbs)
R.A: 23h 00m 36s   Dec: +13° 04’ 29”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.5 (JPL) 
in Pegasus   current altitude greater than 30 degrees above the horizon

Comet 57P/duToit-Neujmin-Delporte

57P/duToit-Neujmin-Delporte
R.A: 02h 21m 33s   Dec: +13° 17’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 21.5 (JPL)  fading
in Aries   current altitude greater than 30 degrees above the horizon
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