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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 5:52  ☀️ Transit: 12:04  🌅 Sunset: 18:18

Comets

Detailed information about 219 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 M3 (ATLAS)

C/2020 M3 (ATLAS)
R.A: 12h 38m 10s   Dec: +23° 29’ 13”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.6 (JPL) 
in Coma   object currently below the horizon

Comet 103P/Hartley 2

103P/Hartley 2
R.A: 03h 47m 45s   Dec: +12° 36’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.7 (JPL)  fading
in Taurus   current altitude greater than 30 degrees above the horizon

Comet 249P/LINEAR

249P/LINEAR
R.A: 08h 01m 05s   Dec: +11° 26’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.7 (JPL)  fading
in Cancer   current altitude less than 30 degrees above the horizon

Comet 104P/Kowal 2

104P/Kowal 2
R.A: 15h 13m 50s   Dec: -16° 21’ 14”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.8 (JPL) 
in Libra   object currently below the horizon

Comet 52P/Harrington-Abell

52P/Harrington-Abell
R.A: 17h 15m 36s   Dec: -34° 13’ 46”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.8 (JPL) 
in Scorpius   object currently below the horizon

Comet 319P/Catalina-McNaught

319P/Catalina-McNaught
R.A: 04h 49m 36s   Dec: +16° 43’ 05”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.9 (JPL)  fading
in Taurus   current altitude greater than 30 degrees above the horizon

Comet 294P/LINEAR

294P/LINEAR
R.A: 00h 28m 27s   Dec: +17° 51’ 30”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.9 (JPL) 
in Pisces   current altitude greater than 30 degrees above the horizon

Comet 207P/NEAT

207P/NEAT
R.A: 22h 48m 14s   Dec: -01° 46’ 15”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.1 (JPL)  brightening
in Aquarius   current altitude less than 30 degrees above the horizon

Comet C/2021 O3 (PANSTARRS)

C/2021 O3 (PANSTARRS)
R.A: 19h 27m 18s   Dec: +32° 46’ 08”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.4 (JPL)  fading
in Cygnus   current altitude less than 30 degrees above the horizon

Comet 68P/Klemola

68P/Klemola
R.A: 08h 00m 21s   Dec: +11° 28’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.4 (JPL)  fading
in Cancer   current altitude less than 30 degrees above the horizon

Comet Halley (1P/Halley)

Halley's Comet
R.A: 08h 12m 52s   Dec: +02° 47’ 21”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.6 (JPL) 
in Hydra   current altitude less than 30 degrees above the horizon

Comet 62P/Tsuchinshan 1

62P/Tsuchinshan 1
R.A: 00h 00m 12s   Dec: -03° 39’ 38”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.6 (JPL)  brightening
in Pisces   current altitude less than 30 degrees above the horizon

Comet 72P/Denning-Fujikawa

72P/Denning-Fujikawa
R.A: 21h 04m 06s   Dec: -25° 32’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.7 (JPL)  brightening
in Capricornus   object currently below the horizon

Comet 123P/West-Hartley

123P/West-Hartley
R.A: 23h 10m 52s   Dec: -18° 38’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.7 (JPL)  brightening
in Aquarius   current altitude less than 30 degrees above the horizon

Comet C/2021 K1 (ATLAS)

C/2021 K1 (ATLAS)
R.A: 04h 32m 35s   Dec: +07° 49’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.8 (JPL)  fading
in Taurus   current altitude greater than 30 degrees above the horizon

Comet 398P/Boattini

398P/Boattini
R.A: 17h 55m 43s   Dec: -14° 31’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.8 (JPL) 
in Serpens   object currently below the horizon

Comet 108P/Ciffreo

108P/Ciffreo
R.A: 12h 23m 16s   Dec: +09° 34’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.0 (JPL)  fading
in Virgo   object currently below the horizon

Comet 260P/McNaught

260P/McNaught
R.A: 12h 24m 56s   Dec: -09° 20’ 23”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.1 (JPL) 
in Virgo   object currently below the horizon

Comet 73P/Schwassmann-Wachmann 3

73P/Schwassmann-Wachmann 3
R.A: 01h 40m 27s   Dec: +05° 03’ 22”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.2 (JPL)  fading
in Pisces   current altitude greater than 30 degrees above the horizon

Comet C/2019 U6 (Lemmon)

C/2019 U6 (Lemmon)
R.A: 22h 51m 38s   Dec: +46° 30’ 42”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 26.2 (JPL)  fading
in Lacerta   current altitude greater than 30 degrees above the horizon
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