Your guide to the Solar System and the night sky
🌎 Location: Greenwich, United Kingdom [change]

Comets

Browse and discover detailed information about 210 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 28P/Neujmin 1

28P/Neujmin 1
R.A: 20h 41m 29s   Dec: -24° 20’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.3 (JPL)  brightening
in Capricornus   current altitude less than 30 degrees above the horizon

Comet 17P/Holmes

17P/Holmes
R.A: 22h 03m 20s   Dec: -08° 17’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.3 (JPL) 
in Aquarius   current altitude greater than 30 degrees above the horizon

Comet C/2020 N1 (PANSTARRS)

C/2020 N1 (PANSTARRS)
R.A: 01h 19m 36s   Dec: +27° 50’ 35”
Observed Magnitude 16.7 (COBS)
Estimated Magnitude 16.4 (JPL)  brightening
in Pisces   current altitude greater than 30 degrees above the horizon

Comet 297P/Beshore (2008 J2)

297P/Beshore (2008 J2)
R.A: 16h 45m 21s   Dec: -15° 58’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.5 (JPL) 
in Ophiucus   object currently below the horizon

Comet C/2020 H6 (ATLAS)

C/2020 H6 (ATLAS)
R.A: 14h 26m 28s   Dec: -26° 39’ 14”
Observed Magnitude 16.9 (COBS)
Estimated Magnitude 17.6 (JPL)  brightening
in Hydra   object currently below the horizon

Comet C/2019 K7 (Smith)

C/2019 K7 (Smith)
R.A: 19h 05m 17s   Dec: +25° 33’ 32”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.9 (JPL)  fading
in Vulpecula   current altitude greater than 30 degrees above the horizon

Comet SWAN (C/2020 F8)

C/2020 F8 (SWAN)
R.A: 03h 52m 02s   Dec: -10° 56’ 32”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.0 (JPL)  fading
in Eridanus   object currently below the horizon

Comet 10P/Tempel 2

10P/Tempel 2
R.A: 19h 12m 26s   Dec: -19° 20’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.0 (JPL)  brightening
in Sagittarius   current altitude less than 30 degrees above the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 23h 47m 57s   Dec: -13° 34’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.1 (JPL) 
in Aquarius   current altitude less than 30 degrees above the horizon

Comet 117P/Helin-Roman-Alu 1

117P/Helin-Roman-Alu 1
R.A: 13h 41m 26s   Dec: -02° 48’ 55”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.1 (JPL)  brightening
in Virgo   object currently below the horizon

Comet C/2018 F4 (PANSTARRS)

C/2018 F4 (PANSTARRS)
R.A: 01h 14m 47s   Dec: -19° 25’ 06”
Observed Magnitude 17.2 (COBS)
Estimated Magnitude 19.3 (JPL)  fading
in Cetus   current altitude less than 30 degrees above the horizon

Comet 11P/Tempel-Swift-LINEAR

11P/Tempel-Swift-LINEAR
R.A: 03h 24m 51s   Dec: +06° 33’ 02”
Observed Magnitude 17.4 (COBS)
Estimated Magnitude 19.1 (JPL)  fading
in Cetus   current altitude less than 30 degrees above the horizon

Comet C/2019 T3 (ATLAS)

C/2019 T3 (ATLAS)
R.A: 22h 27m 24s   Dec: +45° 56’ 19”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.5 (JPL) 
in Lacerta   current altitude greater than 30 degrees above the horizon

Comet C/2020 O2 (Amaral)

C/2020 O2 (Amaral)
R.A: 17h 10m 10s   Dec: -36° 59’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.6 (JPL)  brightening
in Scorpius   object currently below the horizon

Comet ZTF (C/2020 V2)

C/2020 V2 (ZTF)
R.A: 13h 18m 53s   Dec: +29° 30’ 13”
Observed Magnitude 17.7 (COBS)
Estimated Magnitude 18.3 (JPL)  brightening
in Coma   current altitude less than 30 degrees above the horizon

Comet C/2016 M1 (PANSTARRS)

C/2016 M1 (PANSTARRS)
R.A: 05h 53m 20s   Dec: -10° 39’ 14”
Observed Magnitude 17.8 (COBS)
Estimated Magnitude 19.1 (JPL)  fading
in Orion   object currently below the horizon

Comet C/2014 F3 (Sheppard-Trujillo)

C/2014 F3 (Sheppard-Trujillo)
R.A: 21h 21m 37s   Dec: -16° 10’ 50”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.8 (JPL) 
in Capricornus   current altitude less than 30 degrees above the horizon

Comet 4P/Faye

4P/Faye
R.A: 20h 30m 50s   Dec: -13° 25’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.9 (JPL)  brightening
in Capricornus   current altitude less than 30 degrees above the horizon

Comet 7P/Pons-Winnecke

7P/Pons-Winnecke
R.A: 14h 58m 43s   Dec: +10° 14’ 21”
Observed Magnitude 18.8 (COBS)
Estimated Magnitude 18.0 (JPL)  brightening
in Bootes   current altitude less than 30 degrees above the horizon

Comet C/2017 Y2 (PANSTARRS)

C/2017 Y2 (PANSTARRS)
R.A: 17h 48m 42s   Dec: -09° 30’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 18.0 (JPL) 
in Ophiucus   current altitude less than 30 degrees above the horizon
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