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Comets

This section provides a comprehensive list of the bright comets currently visible in the sky. This list is updated with new information several times per day. Comets for which there is data from recent observations reported in the Comet Observation database (COBS) are listed first, in order of decreasing brightness. When data from recent observations is not available, the magnitude provided by the JPL Horizons datasets is used as an estimation of the brightness.

Legend of symbols:

C/2024 G3 (ATLAS)
visibility

C/2024 G3 (ATLAS)  radio_button_checked

Magnitude: 4.5 (Observed - COBS) trending_down
Coma Diameter: 12.0'
Tail Length: 6.0°
Observation Date: 2025-01-30
Apparent: 22h 58m 04s  -37° 22’ 03”
J2000: 22h 56m 40s  -37° 30’ 07”
in Grus
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29P/Schwassmann-Wachmann

29P/Schwassmann-Wachmann  radio_button_checked

Magnitude: 12.4 (Observed - COBS) trending_flat
Coma Diameter: 0.7'
Tail Length: n/a
Observation Date: 2025-02-08
Apparent: 09h 58m 22s  +09° 22’ 49”
J2000: 09h 57m 02s  +09° 30’ 02”
in Leo
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C/2023 A3 (Tsuchinshan-ATLAS)

C/2023 A3 (Tsuchinshan-ATLAS)  radio_button_checked

Magnitude: 12.4 (Observed - COBS) trending_down
Coma Diameter: 0.8'
Tail Length: 3.0'
Observation Date: 2025-02-03
Apparent: 20h 12m 53s  +10° 43’ 45”
J2000: 20h 11m 41s  +10° 39’ 10”
in Aquila
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P/2010 H2 (Vales)

P/2010 H2 (Vales)  radio_button_checked

Magnitude: 13.9 (Predicted - JPL) trending_up
Apparent: 13h 53m 32s  +04° 05’ 51”
J2000: 13h 52m 16s  +04° 13’ 14”
in Virgo
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C/2021 G2 (Atlas)

C/2021 G2 (Atlas)  radio_button_checked

Magnitude: 14.0 (Observed - COBS) trending_up
Coma Diameter: 1.2'
Tail Length: 3.1'
Observation Date: 2025-02-04
Apparent: 15h 28m 12s  -17° 10’ 02”
J2000: 15h 26m 47s  -17° 04’ 51”
in Libra
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C/2022 N2 (PANSTARRS)

C/2022 N2 (PANSTARRS)  radio_button_checked

Magnitude: 15.1 (Observed - COBS) trending_flat
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2025-02-02
Apparent: 23h 43m 04s  +01° 44’ 03”
J2000: 23h 41m 47s  +01° 35’ 41”
in Pisces
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C/2022 E2 (ATLAS)

C/2022 E2 (ATLAS)  radio_button_checked

Magnitude: 15.3 (Observed - COBS) trending_down
Coma Diameter: 0.2'
Tail Length: 6.4"
Observation Date: 2025-02-04
Apparent: 01h 27m 26s  +52° 52’ 07”
J2000: 01h 25m 53s  +52° 44’ 20”
in Cassiopeia
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21P/Giacobini-Zinner

21P/Giacobini-Zinner  radio_button_checked

Magnitude: 15.4 (Predicted - JPL) trending_up
Apparent: 21h 20m 52s  -00° 24’ 08”
J2000: 21h 19m 35s  -00° 30’ 34”
in Aquarius
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C/2014 UN271 (Bernardinelli-Bernstein)

C/2014 UN271 (Bernardinelli-Bernstein)  radio_button_checked

Magnitude: 15.5 (Observed - COBS) trending_flat
Coma Diameter: 0.5'
Tail Length: n/a
Observation Date: 2025-02-04
Apparent: 03h 32m 12s  -68° 33’ 56”
J2000: 03h 32m 03s  -68° 38’ 59”
in Hydrus
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C/2023 C2 (ATLAS)

C/2023 C2 (ATLAS)  radio_button_checked

Magnitude: 15.6 (Predicted - JPL) trending_flat
Apparent: 21h 15m 18s  -00° 08’ 41”
J2000: 21h 14m 01s  -00° 14’ 59”
in Aquarius
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49P/Arend-Rigaux

49P/Arend-Rigaux  radio_button_checked

Magnitude: 16.0 (Observed - COBS) trending_up
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2025-02-04
Apparent: 01h 32m 09s  -06° 28’ 53”
J2000: 01h 30m 54s  -06° 36’ 37”
in Cetus
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C/2022 S4 (Lemmon)

C/2022 S4 (Lemmon)  radio_button_checked

Magnitude: 16.1 (Predicted - JPL) trending_flat
Apparent: 15h 51m 43s  -56° 57’ 28”
J2000: 15h 49m 42s  -56° 52’ 59”
in Norma
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C/2017 K2 (PANSTARRS)

C/2017 K2 (PANSTARRS)  radio_button_checked

Magnitude: 16.1 (Observed - COBS) trending_down
Coma Diameter: 0.6'
Tail Length: n/a
Observation Date: 2025-02-04
Apparent: 05h 27m 12s  +22° 32’ 22”
J2000: 05h 25m 41s  +22° 31’ 09”
in Taurus
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25D/Neujmin 2 (Lost)

25D/Neujmin 2 (Lost)  radio_button_checked

Magnitude: 16.1 (Predicted - JPL) trending_up
Apparent: 05h 07m 11s  +21° 53’ 16”
J2000: 05h 05m 40s  +21° 51’ 19”
in Taurus
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C/2023 X2 (Lemmon)

C/2023 X2 (Lemmon)  radio_button_checked

Magnitude: 16.2 (Observed - COBS) trending_flat
Coma Diameter: 0.2'
Tail Length: n/a
Observation Date: 2025-02-01
Apparent: 03h 28m 03s  +48° 50’ 35”
J2000: 03h 26m 15s  +48° 45’ 24”
in Perseus
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C/2024 J2 (Wierzchos)

C/2024 J2 (Wierzchos)  radio_button_checked

Magnitude: 16.2 (Observed - COBS) trending_flat
Coma Diameter: 0.2'
Tail Length: n/a
Observation Date: 2025-02-02
Apparent: 21h 36m 23s  +27° 02’ 43”
J2000: 21h 35m 16s  +26° 55’ 56”
in Pegasus
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C/2019 U5 (PANSTARRS)

C/2019 U5 (PANSTARRS)  radio_button_checked

Magnitude: 16.4 (Observed - COBS) trending_down
Coma Diameter: 0.6'
Tail Length: 2.9'
Observation Date: 2025-02-04
Apparent: 05h 42m 17s  -48° 03’ 33”
J2000: 05h 41m 37s  -48° 04’ 13”
in Pictor
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48P/Johnson

48P/Johnson  radio_button_checked

Magnitude: 16.5 (Predicted - JPL) trending_flat
Apparent: 21h 31m 25s  -18° 43’ 38”
J2000: 21h 30m 01s  -18° 50’ 18”
in Capricornus
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C/2023 T3 (Fuls)

C/2023 T3 (Fuls)  radio_button_checked

Magnitude: 16.5 (Observed - COBS) trending_flat
Coma Diameter: 0.5'
Tail Length: n/a
Observation Date: 2025-02-04
Apparent: 13h 24m 42s  -35° 16’ 25”
J2000: 13h 23m 16s  -35° 08’ 35”
in Centaurus
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C/2023 R1 (PANSTARRS)

C/2023 R1 (PANSTARRS)  radio_button_checked

Magnitude: 16.6 (Observed - COBS) trending_up
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2025-02-02
Apparent: 22h 20m 10s  +17° 06’ 03”
J2000: 22h 18m 57s  +16° 58’ 28”
in Pegasus
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