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

Comets

Browse and discover detailed information about 193 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/2020 F3 (NEOWISE)

C/2020 F3 (NEOWISE)
C/2020 F3 (NEOWISE) is brighter than mag 10
R.A: 13h 47m 22s   Dec: +07° 52’ 02”
Observed Magnitude 6.2 (COBS)
Estimated Magnitude 12.0 (JPL) 
in Bootes   object currently below the horizon

Comet 88P/Howell

88P/Howell
88P/Howell is brighter than mag 10
R.A: 14h 18m 11s   Dec: -15° 52’ 54”
Observed Magnitude 9.9 (COBS)
Estimated Magnitude 15.0 (JPL) 
in Virgo   object currently below the horizon

Comet C/2019 U6 (Lemmon)

C/2019 U6 (Lemmon)
R.A: 14h 20m 01s   Dec: +20° 40’ 49”
Observed Magnitude 10.4 (COBS)
Estimated Magnitude 13.8 (JPL)  fading
in Bootes   current altitude less than 30 degrees above the horizon

Comet C/2017 T2 (PANSTARRS)

C/2017 T2 (PANSTARRS)
R.A: 13h 48m 42s   Dec: +11° 23’ 09”
Observed Magnitude 10.7 (COBS)
Estimated Magnitude 13.0 (JPL) 
in Bootes   current altitude less than 30 degrees above the horizon

Comet C/2019 N1 (ATLAS)

C/2019 N1 (ATLAS)
R.A: 12h 18m 59s   Dec: +32° 34’ 03”
Observed Magnitude 12.4 (COBS)
Estimated Magnitude 15.0 (JPL) 
in Coma   current altitude less than 30 degrees above the horizon

Comet Encke (2P/Encke)

Encke's Comet
R.A: 14h 15m 32s   Dec: -28° 34’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 12.5 (JPL)  fading
in Hydra   object currently below the horizon

Comet C/2018 N2 (ASASSN)

C/2018 N2 (ASASSN)
R.A: 12h 25m 17s   Dec: +80° 40’ 32”
Observed Magnitude 14.3 (COBS)
Estimated Magnitude 16.0 (JPL) 
in Camelopardalis   current altitude greater than 30 degrees above the horizon

Comet C/2019 L3 (ATLAS)

C/2019 L3 (ATLAS)
R.A: 00h 55m 58s   Dec: +62° 12’ 44”
Observed Magnitude 14.3 (COBS)
Estimated Magnitude 16.0 (JPL) 
in Cassiopeia   current altitude greater than 30 degrees above the horizon

Comet SWAN (C/2020 F8)

C/2020 F8 (SWAN)
R.A: 06h 44m 45s   Dec: +17° 31’ 53”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.5 (JPL)  fading
in Gemini   current altitude greater than 30 degrees above the horizon

Comet C/2020 K8 (Catalina-ATLAS)

C/2020 K8 (Catalina-ATLAS)
R.A: 05h 41m 55s   Dec: +25° 41’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.3 (JPL)  brightening
in Taurus   current altitude greater than 30 degrees above the horizon

Comet C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)
R.A: 17h 08m 04s   Dec: +48° 50’ 37”
Observed Magnitude 15.7 (COBS)
Estimated Magnitude 16.3 (JPL)  brightening
in Hercules   current altitude less than 30 degrees above the horizon

Comet 17P/Holmes

17P/Holmes
R.A: 17h 51m 40s   Dec: -40° 30’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL) 
in Scorpius   object currently below the horizon

Comet 29P/Schwassmann-Wachmann 1

29P/Schwassmann-Wachmann 1
R.A: 02h 51m 29s   Dec: +26° 29’ 38”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL) 
in Aries   current altitude greater than 30 degrees above the horizon

Comet C/2019 F1 (ATLAS-Africano)

C/2019 F1 (ATLAS-Africano)
R.A: 13h 56m 02s   Dec: -25° 55’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL) 
in Hydra   object currently below the horizon

Comet C/2019 K7 (Smith)

C/2019 K7 (Smith)
R.A: 19h 01m 14s   Dec: +20° 09’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL) 
in Sagitta   object currently below the horizon

Comet C/2020 F5 (MASTER)

C/2020 F5 (MASTER)
R.A: 15h 21m 28s   Dec: -78° 02’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL) 
in Apus   object currently below the horizon

Comet C/2020 J1 (SONEAR)

C/2020 J1 (SONEAR)
R.A: 18h 41m 50s   Dec: -64° 52’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL) 
in Pavo   object currently below the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 23h 58m 37s   Dec: -19° 20’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL) 
in Cetus   object currently below the horizon

Comet C/2020 P1 (NEOWISE)

C/2020 P1 (NEOWISE)
R.A: 12h 27m 47s   Dec: -70° 00’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.3 (JPL)  brightening
in Musca   object currently below the horizon

Comet 28P/Neujmin 1

28P/Neujmin 1
R.A: 14h 19m 07s   Dec: -28° 42’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.0 (JPL) 
in Hydra   object currently below the horizon
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