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🌎  Greenwich, United Kingdom [change]

Comets

Browse and discover detailed information about 197 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 R4 (ATLAS)

C/2020 R4 (ATLAS)
C/2020 R4 (ATLAS) is brighter than mag 10
R.A: 12h 42m 47s   Dec: +31° 24’ 30”
Observed Magnitude 9.4 (COBS)
Estimated Magnitude 14.0 (JPL)  fading
in Canes Venatici   current altitude less than 30 degrees above the horizon

Comet C/2020 T2 (Palomar)

C/2020 T2 (Palomar)
R.A: 13h 42m 38s   Dec: +31° 14’ 50”
Observed Magnitude 11.0 (COBS)
Estimated Magnitude 13.9 (JPL)  brightening
in Canes Venatici   object currently below the horizon

Comet 7P/Pons-Winnecke

7P/Pons-Winnecke
R.A: 19h 52m 08s   Dec: +02° 06’ 22”
Observed Magnitude 13.0 (COBS)
Estimated Magnitude 14.7 (JPL)  brightening
in Aquila   object currently below the horizon

Comet C/2019 L3 (ATLAS)

C/2019 L3 (ATLAS)
R.A: 03h 27m 07s   Dec: +50° 40’ 07”
Observed Magnitude 13.1 (COBS)
Estimated Magnitude 14.5 (JPL) 
in Perseus   current altitude greater than 30 degrees above the horizon

Comet C/2021 D1 (SWAN)

C/2021 D1 (SWAN)
R.A: 05h 14m 52s   Dec: +33° 31’ 20”
Observed Magnitude 13.3 (COBS)
Estimated Magnitude 16.4 (JPL)  fading
in Auriga   current altitude greater than 30 degrees above the horizon

Comet 15P/Finlay

15P/Finlay
R.A: 22h 39m 30s   Dec: -16° 01’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 13.5 (JPL)  brightening
in Aquarius   object currently below the horizon

Comet C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)
R.A: 18h 18m 32s   Dec: +42° 25’ 17”
Observed Magnitude 13.8 (COBS)
Estimated Magnitude 14.8 (JPL)  brightening
in Lyra   current altitude less than 30 degrees above the horizon

Comet C/2020 J1 (SONEAR)

C/2020 J1 (SONEAR)
R.A: 15h 52m 45s   Dec: -32° 37’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.2 (JPL) 
in Lupus   object currently below the horizon

Comet C/2019 N1 (ATLAS)

C/2019 N1 (ATLAS)
R.A: 04h 27m 00s   Dec: -56° 45’ 59”
Observed Magnitude 14.3 (COBS)
Estimated Magnitude 15.0 (JPL)  fading
in Dorado   object currently below the horizon

Comet C/2019 T4 (ATLAS)

C/2019 T4 (ATLAS)
R.A: 08h 13m 55s   Dec: -28° 23’ 44”
Observed Magnitude 14.5 (COBS)
Estimated Magnitude 15.5 (JPL) 
in Puppis   object currently below the horizon

Comet 246P/NEAT

246P/NEAT
R.A: 19h 27m 08s   Dec: -26° 26’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.7 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet C/2019 F1 (ATLAS-Africano)

C/2019 F1 (ATLAS-Africano)
R.A: 20h 37m 08s   Dec: -75° 08’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 14.7 (JPL)  brightening
in Octans   object currently below the horizon

Comet 75D/Kohoutek (Lost)

75D/Kohoutek (Lost)
R.A: 06h 08m 24s   Dec: +21° 27’ 40”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.1 (JPL)  fading
in Orion   current altitude greater than 30 degrees above the horizon

Comet C/2020 F5 (MASTER)

C/2020 F5 (MASTER)
R.A: 23h 25m 36s   Dec: -37° 02’ 13”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.5 (JPL)  brightening
in Grus   object currently below the horizon

Comet C/2020 S8 (Lemmon)

C/2020 S8 (Lemmon)
R.A: 13h 15m 40s   Dec: +08° 25’ 44”
Observed Magnitude 15.5 (COBS)
Estimated Magnitude 17.0 (JPL)  fading
in Virgo   object currently below the horizon

Comet 297P/Beshore

297P/Beshore
R.A: 18h 53m 13s   Dec: -18° 58’ 13”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.8 (JPL) 
in Sagittarius   object currently below the horizon

Comet 156P/Russell-LINEAR

156P/Russell-LINEAR
R.A: 07h 14m 51s   Dec: +37° 28’ 41”
Observed Magnitude 15.8 (COBS)
Estimated Magnitude 20.7 (JPL)  fading
in Auriga   current altitude greater than 30 degrees above the horizon

Comet 297P/Beshore (2008 J2)

297P/Beshore (2008 J2)
R.A: 18h 53m 14s   Dec: -18° 58’ 13”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 15.8 (JPL) 
in Sagittarius   object currently below the horizon

Comet 4P/Faye

4P/Faye
R.A: 23h 46m 12s   Dec: +02° 39’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL)  brightening
in Pisces   current altitude less than 30 degrees above the horizon

Comet C/2017 T2 (PANSTARRS)

C/2017 T2 (PANSTARRS)
R.A: 17h 26m 53s   Dec: -43° 38’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.0 (JPL) 
in Scorpius   object currently below the horizon
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