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 C/2020 H3 (Wierzchos)

C/2020 H3 (Wierzchos)
R.A: 21h 48m 33s   Dec: +46° 30’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.0 (JPL)  fading
in Cygnus   current altitude less than 30 degrees above the horizon

Comet 319P/Catalina-McNaught

319P/Catalina-McNaught
R.A: 12h 54m 41s   Dec: +11° 13’ 45”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.1 (JPL)  brightening
in Virgo   current altitude greater than 30 degrees above the horizon

Comet 25D/Neujmin 2

25D/Neujmin 2
R.A: 20h 51m 22s   Dec: -17° 18’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.2 (JPL)  fading
in Capricornus   object currently below the horizon

Comet C/2015 X7 (ATLAS)

C/2015 X7 (ATLAS)
R.A: 17h 29m 32s   Dec: +29° 48’ 13”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.2 (JPL) 
in Hercules   current altitude greater than 30 degrees above the horizon

Comet 104P/Kowal 2

104P/Kowal 2
R.A: 19h 59m 49s   Dec: -16° 02’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.4 (JPL)  brightening
in Sagittarius   object currently below the horizon

Comet Hale-Bopp (C/1995 O1)

C/1995 O1 (Hale-Bopp)
R.A: 22h 29m 43s   Dec: -84° 06’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.4 (JPL) 
in Octans   object currently below the horizon

Comet Halley (1P/Halley)

Halley's Comet
R.A: 08h 20m 52s   Dec: +01° 59’ 26”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.5 (JPL) 
in Hydra   current altitude less than 30 degrees above the horizon

Comet 13P/Olbers

13P/Olbers
R.A: 01h 16m 33s   Dec: -38° 29’ 37”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.7 (JPL) 
in Sculptor   object currently below the horizon

Comet 12P/Pons-Brooks

12P/Pons-Brooks
R.A: 18h 15m 22s   Dec: +16° 45’ 13”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.7 (JPL)  brightening
in Hercules   current altitude less than 30 degrees above the horizon

Comet C/2019 B1 (Africano)

C/2019 B1 (Africano)
R.A: 23h 34m 42s   Dec: -49° 40’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.7 (JPL) 
in Phoenix   object currently below the horizon

Comet C/2013 A1 (Siding Spring)

C/2013 A1 (Siding Spring)
R.A: 10h 15m 46s   Dec: +36° 48’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.9 (JPL) 
in Leo Minor   current altitude greater than 30 degrees above the horizon

Comet 333P/LINEAR

333P/LINEAR
R.A: 18h 40m 45s   Dec: -43° 04’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.0 (JPL) 
in Corona Australis   object currently below the horizon

Comet C/2017 O1 (ASASSN1)

C/2017 O1 (ASASSN1)
R.A: 13h 11m 52s   Dec: +07° 58’ 30”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.0 (JPL) 
in Virgo   current altitude greater than 30 degrees above the horizon

Comet P/2019 Y2 (Fuls)

P/2019 Y2 (Fuls)
R.A: 18h 45m 25s   Dec: -23° 49’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.0 (JPL)  fading
in Sagittarius   object currently below the horizon

Comet 96P/Machholz

96P/Machholz
R.A: 19h 21m 25s   Dec: -35° 09’ 31”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.0 (JPL) 
in Sagittarius   object currently below the horizon

Comet 66P/du Toit

66P/du Toit
R.A: 03h 47m 19s   Dec: +35° 17’ 36”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.1 (JPL) 
in Perseus   current altitude less than 30 degrees above the horizon

Comet C/2020 A2 (Iwamoto)

C/2020 A2 (Iwamoto)
R.A: 06h 06m 48s   Dec: +07° 11’ 04”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.1 (JPL)  fading
in Orion   object currently below the horizon

Comet 56P/Slaughter-Burnham

56P/Slaughter-Burnham
R.A: 13h 17m 37s   Dec: -12° 41’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.2 (JPL) 
in Virgo   current altitude less than 30 degrees above the horizon

Comet 261P/Larson

261P/Larson
R.A: 08h 58m 49s   Dec: +14° 15’ 48”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.2 (JPL)  fading
in Cancer   current altitude less than 30 degrees above the horizon

Comet 37P/Forbes

37P/Forbes
R.A: 05h 53m 31s   Dec: +30° 13’ 28”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.2 (JPL) 
in Auriga   current altitude less than 30 degrees above the horizon
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