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

Comets

Browse and discover detailed information about 191 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 21P/Giacobini-Zinner

21P/Giacobini-Zinner
R.A: 10h 50m 04s   Dec: -05° 32’ 20”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Sextans   current altitude less than 30 degrees above the horizon

Comet 260P/McNaught

260P/McNaught
R.A: 09h 01m 20s   Dec: +24° 45’ 20”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Cancer   current altitude greater than 30 degrees above the horizon

Comet 290P/Jager

290P/Jager
R.A: 19h 48m 05s   Dec: -23° 38’ 43”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Sagittarius   object currently below the horizon

Comet 38P/Stephan-Oterma

38P/Stephan-Oterma
R.A: 13h 26m 59s   Dec: +05° 38’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon

Comet 48P/Johnson

48P/Johnson
R.A: 07h 54m 39s   Dec: +21° 16’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Gemini   current altitude greater than 30 degrees above the horizon

Comet 53P/Van Biesbroeck

53P/Van Biesbroeck
R.A: 05h 49m 37s   Dec: +17° 48’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Taurus   current altitude greater than 30 degrees above the horizon

Comet 6P/d'Arrest

6P/d'Arrest
R.A: 11h 51m 51s   Dec: +13° 27’ 17”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Leo   current altitude greater than 30 degrees above the horizon

Comet 71P/Clark

71P/Clark
R.A: 06h 57m 27s   Dec: +27° 37’ 17”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Gemini   current altitude greater than 30 degrees above the horizon

Comet C/2013 X1 (PANSTARRS)

C/2013 X1 (PANSTARRS)
R.A: 11h 34m 18s   Dec: -10° 42’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Crater   current altitude less than 30 degrees above the horizon

Comet C/2015 B1 (PANSTARRS)

C/2015 B1 (PANSTARRS)
R.A: 19h 02m 20s   Dec: -41° 15’ 13”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Corona Australis   object currently below the horizon

Comet C/2015 ER61 (PANSTARRS)

C/2015 ER61 (PANSTARRS)
R.A: 06h 06m 59s   Dec: +20° 10’ 27”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Orion   current altitude greater than 30 degrees above the horizon

Comet C/2018 L2 (ATLAS)

C/2018 L2 (ATLAS)
R.A: 04h 27m 36s   Dec: +25° 47’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Taurus   current altitude greater than 30 degrees above the horizon

Comet C/2019 Y1 (ATLAS)

C/2019 Y1 (ATLAS)
R.A: 12h 44m 52s   Dec: +07° 23’ 05”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.0 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon

Comet C/2018 R3 (Lemmon)

C/2018 R3 (Lemmon)
R.A: 09h 42m 24s   Dec: -31° 50’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.2 (JPL)  fading
in Antlia   current altitude less than 30 degrees above the horizon

Comet 108P/Ciffreo

108P/Ciffreo
R.A: 18h 12m 44s   Dec: -35° 18’ 37”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL) 
in Sagittarius   object currently below the horizon

Comet 15P/Finlay

15P/Finlay
R.A: 13h 40m 10s   Dec: -13° 56’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL) 
in Virgo   object currently below the horizon

Comet 185P/Petriew

185P/Petriew
R.A: 13h 22m 05s   Dec: -09° 00’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon

Comet 217P/LINEAR

217P/LINEAR
R.A: 11h 57m 50s   Dec: +10° 42’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL) 
in Leo   current altitude greater than 30 degrees above the horizon

Comet 269P/Jedicke

269P/Jedicke
R.A: 16h 31m 41s   Dec: -20° 07’ 33”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL) 
in Ophiucus   object currently below the horizon

Comet 64P/Swift-Gehrels

64P/Swift-Gehrels
R.A: 11h 24m 45s   Dec: -03° 38’ 02”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL) 
in Leo   current altitude less than 30 degrees above the horizon
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