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Comets

Browse and discover detailed information about 207 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 48P/Johnson

48P/Johnson
R.A: 10h 53m 20s   Dec: +15° 32’ 53”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL)  brightening
in Leo   object currently below the horizon

Comet 185P/Petriew

185P/Petriew
R.A: 15h 52m 29s   Dec: -15° 45’ 06”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL)  brightening
in Libra   object currently below the horizon

Comet 21P/Giacobini-Zinner

21P/Giacobini-Zinner
R.A: 12h 57m 43s   Dec: -10° 08’ 51”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.7 (JPL) 
in Virgo   object currently below the horizon

Comet 398P/Boattini

398P/Boattini
R.A: 15h 05m 23s   Dec: -08° 12’ 52”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.8 (JPL)  fading
in Libra   object currently below the horizon

Comet 13P/Olbers

13P/Olbers
R.A: 01h 37m 42s   Dec: -39° 19’ 07”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.8 (JPL)  brightening
in Phoenix   object currently below the horizon

Comet P/2017 S5 (ATLAS)

P/2017 S5 (ATLAS)
R.A: 15h 51m 09s   Dec: -22° 52’ 38”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL)  brightening
in Scorpius   object currently below the horizon

Comet 12P/Pons-Brooks

12P/Pons-Brooks
R.A: 18h 03m 20s   Dec: +19° 10’ 58”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL)  brightening
in Hercules   object currently below the horizon

Comet 290P/Jager

290P/Jager
R.A: 20h 13m 17s   Dec: -19° 01’ 31”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL) 
in Capricornus   object currently below the horizon

Comet 269P/Jedicke

269P/Jedicke
R.A: 17h 47m 39s   Dec: -20° 31’ 53”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 23.9 (JPL) 
in Sagittarius   object currently below the horizon

Comet 64P/Swift-Gehrels

64P/Swift-Gehrels
R.A: 13h 26m 52s   Dec: -17° 52’ 09”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL)  brightening
in Virgo   object currently below the horizon

Comet 252P/LINEAR

252P/LINEAR
R.A: 18h 13m 44s   Dec: -16° 11’ 10”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.0 (JPL)  fading
in Sagittarius   object currently below the horizon

Comet 237P/LINEAR

237P/LINEAR
R.A: 10h 20m 24s   Dec: -05° 29’ 08”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.1 (JPL)  brightening
in Sextans   object currently below the horizon

Comet 249P/LINEAR

249P/LINEAR
R.A: 08h 05m 21s   Dec: +12° 04’ 40”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.2 (JPL) 
in Cancer   current altitude less than 30 degrees above the horizon

Comet 209P/LINEAR

209P/LINEAR
R.A: 01h 56m 56s   Dec: -00° 25’ 01”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.4 (JPL)  fading
in Cetus   current altitude greater than 30 degrees above the horizon

Comet 294P/LINEAR

294P/LINEAR
R.A: 22h 19m 27s   Dec: +01° 18’ 32”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.4 (JPL)  fading
in Aquarius   current altitude less than 30 degrees above the horizon

Comet 144P/Kushida

144P/Kushida
R.A: 19h 54m 40s   Dec: -17° 43’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.5 (JPL) 
in Sagittarius   object currently below the horizon

Comet 126P/IRAS

126P/IRAS
R.A: 13h 59m 32s   Dec: -42° 36’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.6 (JPL)  brightening
in Centaurus   object currently below the horizon

Comet 96P/Machholz 1

96P/Machholz 1
R.A: 18h 57m 31s   Dec: -39° 17’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.6 (JPL) 
in Corona Australis   object currently below the horizon

Comet 332P/Ikeya-Murakami

332P/Ikeya-Murakami
R.A: 15h 07m 30s   Dec: -21° 17’ 37”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 24.7 (JPL)  fading
in Libra   object currently below the horizon

Comet C/2021 D1 (SWAN)

C/2021 D1 (SWAN)
R.A: 10h 30m 30s   Dec: -00° 13’ 18”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 25.0 (JPL)  fading
in Sextans   object currently below the horizon
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