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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/2025 F2 (SWAN)  radio_button_checked

C/2025 F2 (SWAN)

C/2025 F2 (SWAN)  radio_button_checked

Magnitude: 12.4 (Predicted - JPL) trending_down
Apparent: 05h 33m 29s  -17° 12’ 11”
J2000: 05h 32m 21s  -17° 13’ 11”
in Lepus
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217P/LINEAR  radio_button_checked

217P/LINEAR

217P/LINEAR  radio_button_checked

Magnitude: 12.6 (Observed - COBS) trending_flat
Coma Diameter: 1.2'
Tail Length: 6.6'
Observation Date: 2025-05-31
Apparent: 02h 59m 27s  +09° 04’ 42”
J2000: 02h 58m 06s  +08° 58’ 40”
in Cetus
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29P/Schwassmann-Wachmann  radio_button_checked

29P/Schwassmann-Wachmann

29P/Schwassmann-Wachmann  radio_button_checked

Magnitude: 13.1 (Observed - COBS) trending_flat
Coma Diameter: 1.7'
Tail Length: n/a
Observation Date: 2025-05-31
Apparent: 09h 46m 08s  +09° 54’ 46”
J2000: 09h 44m 47s  +10° 01’ 50”
in Leo
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C/2021 G2 (Atlas)  radio_button_checked

C/2021 G2 (Atlas)

C/2021 G2 (Atlas)  radio_button_checked

Magnitude: 13.6 (Observed - COBS) trending_down
Coma Diameter: 1.4'
Tail Length: 1.8'
Observation Date: 2025-05-31
Apparent: 15h 11m 58s  -03° 48’ 36”
J2000: 15h 10m 38s  -03° 42’ 53”
in Libra
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P/2010 H2 (Vales)  radio_button_checked

P/2010 H2 (Vales)

P/2010 H2 (Vales)  radio_button_checked

Magnitude: 13.9 (Predicted - JPL) trending_down
Apparent: 13h 07m 14s  +03° 54’ 49”
J2000: 13h 05m 56s  +04° 02’ 57”
in Virgo
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C/2014 UN271 (Bernardinelli-Bernstein)  radio_button_checked

C/2014 UN271 (Bernardinelli-Bernstein)

C/2014 UN271 (Bernardinelli-Bernstein)  radio_button_checked

Magnitude: 14.7 (Observed - COBS) trending_flat
Coma Diameter: 2.5'
Tail Length: n/a
Observation Date: 2025-05-24
Apparent: 04h 33m 21s  -65° 24’ 27”
J2000: 04h 33m 12s  -65° 27’ 35”
in Reticulum
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C/2024 J2 (Wierzchos)  radio_button_checked

C/2024 J2 (Wierzchos)

C/2024 J2 (Wierzchos)  radio_button_checked

Magnitude: 14.9 (Predicted - JPL) trending_down
Apparent: 01h 54m 33s  +09° 18’ 28”
J2000: 01h 53m 12s  +09° 11’ 00”
in Pisces
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C/2022 E2 (ATLAS)  radio_button_checked

C/2022 E2 (ATLAS)

C/2022 E2 (ATLAS)  radio_button_checked

Magnitude: 15.4 (Predicted - JPL) trending_flat
Apparent: 01h 54m 46s  +50° 38’ 52”
J2000: 01h 53m 08s  +50° 31’ 24”
in Perseus
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C/2022 N2 (PANSTARRS)  radio_button_checked

C/2022 N2 (PANSTARRS)

C/2022 N2 (PANSTARRS)  radio_button_checked

Magnitude: 15.4 (Predicted - JPL) trending_up
Apparent: 02h 01m 52s  +16° 50’ 50”
J2000: 02h 00m 29s  +16° 43’ 30”
in Aries
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C/2022 QE78 (ATLAS)  radio_button_checked

C/2022 QE78 (ATLAS)

C/2022 QE78 (ATLAS)  radio_button_checked

Magnitude: 15.8 (Predicted - JPL) trending_flat
Apparent: 07h 07m 47s  +17° 11’ 36”
J2000: 07h 06m 19s  +17° 14’ 03”
in Gemini
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C/2024 G3 (ATLAS)  radio_button_checked

C/2024 G3 (ATLAS)

C/2024 G3 (ATLAS)  radio_button_checked

Magnitude: 16.0 (Predicted - JPL) trending_down
Apparent: 02h 43m 28s  -54° 37’ 07”
J2000: 02h 42m 41s  -54° 43’ 32”
in Horologium
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496P/Hill  radio_button_checked

496P/Hill

496P/Hill  radio_button_checked

Magnitude: 16.1 (Observed - COBS) trending_down
Coma Diameter: 1.7'
Tail Length: n/a
Observation Date: 2025-05-24
Apparent: 08h 54m 52s  +30° 09’ 52”
J2000: 08h 53m 19s  +30° 15’ 43”
in Cancer
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C/2023 C2 (ATLAS)  radio_button_checked

C/2023 C2 (ATLAS)

C/2023 C2 (ATLAS)  radio_button_checked

Magnitude: 16.1 (Observed - COBS) trending_down
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2025-05-27
Apparent: 23h 30m 30s  +37° 16’ 47”
J2000: 23h 29m 15s  +37° 08’ 22”
in Andromeda
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C/2020 V2 (ZTF)  radio_button_checked

C/2020 V2 (ZTF)

C/2020 V2 (ZTF)  radio_button_checked

Magnitude: 16.1 (Observed - COBS) trending_down
Coma Diameter: 0.6'
Tail Length: n/a
Observation Date: 2025-05-26
Apparent: 22h 12m 33s  -68° 59’ 52”
J2000: 22h 10m 35s  -69° 07’ 25”
in Indus
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21P/Giacobini-Zinner  radio_button_checked

21P/Giacobini-Zinner

21P/Giacobini-Zinner  radio_button_checked

Magnitude: 16.3 (Predicted - JPL) trending_down
Apparent: 05h 00m 10s  +06° 07’ 33”
J2000: 04h 58m 48s  +06° 05’ 20”
in Orion
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C/2023 A3 (Tsuchinshan-ATLAS)  radio_button_checked

C/2023 A3 (Tsuchinshan-ATLAS)

C/2023 A3 (Tsuchinshan-ATLAS)  radio_button_checked

Magnitude: 16.3 (Observed - COBS) trending_down
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2025-06-01
Apparent: 19h 39m 43s  +28° 23’ 32”
J2000: 19h 38m 41s  +28° 19’ 58”
in Cygnus
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C/2024 E1 (Wierzchos)  radio_button_checked

C/2024 E1 (Wierzchos)

C/2024 E1 (Wierzchos)  radio_button_checked

Magnitude: 16.3 (Observed - COBS) trending_up
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2025-05-31
Apparent: 17h 41m 26s  +58° 10’ 31”
J2000: 17h 41m 02s  +58° 11’ 12”
in Draco
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C/2024 J3 (ATLAS)  radio_button_checked

C/2024 J3 (ATLAS)

C/2024 J3 (ATLAS)  radio_button_checked

Magnitude: 16.3 (Observed - COBS) trending_up
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2025-06-01
Apparent: 19h 37m 58s  -19° 36’ 15”
J2000: 19h 36m 29s  -19° 39’ 44”
in Sagittarius
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C/2023 R1 (PANSTARRS)  radio_button_checked

C/2023 R1 (PANSTARRS)

C/2023 R1 (PANSTARRS)  radio_button_checked

Magnitude: 16.4 (Observed - COBS) trending_up
Coma Diameter: 0.4'
Tail Length: n/a
Observation Date: 2025-05-30
Apparent: 22h 27m 49s  +23° 53’ 18”
J2000: 22h 26m 37s  +23° 45’ 30”
in Pegasus
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C/2024 A1 (ATLAS)  radio_button_checked

C/2024 A1 (ATLAS)

C/2024 A1 (ATLAS)  radio_button_checked

Magnitude: 16.5 (Predicted - JPL) trending_down
Apparent: 07h 02m 44s  +15° 22’ 41”
J2000: 07h 01m 17s  +15° 24’ 57”
in Gemini
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