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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:38  ☀️ Transit: 13:03  🌅 Sunset: 19:28

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Position Calculator
Time: : UTC

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/2022 L2 (ATLAS)

C/2022 L2 (ATLAS)
R.A: 18h 33m 37s   Dec: +18° 22’ 39”
Observed Magnitude 16.1 (COBS)
Estimated Magnitude 16.1 (JPL)  brightening
in Hercules   current altitude less than 30 degrees above the horizon

Comet C/2023 A1 (Leonard)

C/2023 A1 (Leonard)
R.A: 07h 18m 50s   Dec: +40° 02’ 08”
Observed Magnitude 16.2 (COBS)
Estimated Magnitude 18.0 (JPL)  fading
in Auriga   current altitude greater than 30 degrees above the horizon

Comet P/2010 H2 (Vales)

P/2010 H2 (Vales)
R.A: 04h 10m 09s   Dec: +23° 56’ 35”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.3 (JPL) 
in Taurus   object currently below the horizon

Comet 71P/Clark

71P/Clark
R.A: 22h 14m 32s   Dec: -17° 43’ 16”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.4 (JPL)  fading
in Aquarius   object currently below the horizon

Comet C/2022 W3 (Leonard)

C/2022 W3 (Leonard)
R.A: 02h 22m 34s   Dec: +67° 56’ 43”
Observed Magnitude 16.8 (COBS)
Estimated Magnitude 16.4 (JPL)  brightening
in Cassiopeia   current altitude greater than 30 degrees above the horizon

Comet C/2021 C5 (PANSTARRS)

C/2021 C5 (PANSTARRS)
R.A: 19h 41m 31s   Dec: -74° 57’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.4 (JPL)  brightening
in Octans   object currently below the horizon

Comet 117P/Helin-Roman-Alu 1

117P/Helin-Roman-Alu 1
R.A: 23h 05m 40s   Dec: -13° 17’ 05”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.5 (JPL) 
in Aquarius   object currently below the horizon

Comet C/2023 B2 (ATLAS)

C/2023 B2 (ATLAS)
R.A: 11h 56m 39s   Dec: -44° 58’ 01”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.6 (JPL)  fading
in Centaurus   object currently below the horizon

Comet C/2022 S3 (PANSTARRS)

C/2022 S3 (PANSTARRS)
R.A: 07h 28m 04s   Dec: +04° 44’ 49”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.7 (JPL)  fading
in Canis Minoris   current altitude less than 30 degrees above the horizon

Comet C/2020 Y2 (ATLAS)

C/2020 Y2 (ATLAS)
R.A: 02h 26m 48s   Dec: -15° 07’ 59”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.9 (JPL)  fading
in Cetus   object currently below the horizon

Comet P/2023 B1 (PANSTARRS)

P/2023 B1 (PANSTARRS)
R.A: 10h 40m 40s   Dec: +26° 12’ 09”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 16.9 (JPL) 
in Leo Minor   current altitude greater than 30 degrees above the horizon

Comet C/2021 E3 (ZTF)

C/2021 E3 (ZTF)
R.A: 06h 41m 09s   Dec: -12° 19’ 08”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.0 (JPL)  fading
in Canis Majoris   object currently below the horizon

Comet 199P/Shoemaker 4

199P/Shoemaker 4
R.A: 18h 18m 01s   Dec: -14° 50’ 32”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.2 (JPL)  brightening
in Serpens   object currently below the horizon

Comet 185P/Petriew

185P/Petriew
R.A: 21h 39m 38s   Dec: -02° 56’ 00”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.4 (JPL)  brightening
in Aquarius   object currently below the horizon

Comet 116P/Wild 4

116P/Wild 4
R.A: 19h 36m 23s   Dec: -24° 59’ 25”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.5 (JPL) 
in Sagittarius   object currently below the horizon

Comet C/2020 F2 (ATLAS)

C/2020 F2 (ATLAS)
R.A: 12h 59m 37s   Dec: +11° 15’ 49”
Observed Magnitude 17.5 (COBS)
Estimated Magnitude 17.8 (JPL) 
in Virgo   current altitude greater than 30 degrees above the horizon

Comet 29P/Schwassmann-Wachmann 1

29P/Schwassmann-Wachmann 1
R.A: 06h 21m 33s   Dec: +27° 47’ 54”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.6 (JPL)  fading
in Gemini   current altitude less than 30 degrees above the horizon

Comet C/2023 E1 (ATLAS)

C/2023 E1 (ATLAS)
R.A: 12h 42m 14s   Dec: +30° 43’ 47”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.6 (JPL)  brightening
in Coma   current altitude greater than 30 degrees above the horizon

Comet Tsuchinshan-ATLAS (C/2023 A3)

Tsuchinshan-ATLAS (C/2023 A3)
R.A: 15h 11m 10s   Dec: +00° 28’ 12”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.6 (JPL)  brightening
in Virgo   current altitude greater than 30 degrees above the horizon

Comet C/2022 U4 (Bok)

C/2022 U4 (Bok)
R.A: 13h 12m 47s   Dec: +53° 59’ 34”
Observed Magnitude N.A. (COBS)
Estimated Magnitude 17.7 (JPL) 
in Ursa Major   current altitude greater than 30 degrees above the horizon
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