Bright Comets
This page 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.
Credits for comet observation data: COBS Comet Observation Database – CC BY-NA-SA 4.0
Visibility from selected location
visibility = visible to the naked eye
stars = binocular, brighter than 10th magnitude
launcher_assistant_on Current altitude ≥ 30°
launcher_assistant_on Current altitude < 30°
launcher_assistant_on Below the horizon
C/2021 T4 (Lemmon)
Magnitude : 10.4 (Observed - COBS)
trending_up
Coma Diameter : 4.0'
Tail Length : n/a
Observation Date : 2023-05-31
RA : 00h 42m 03s
Decl : -15° 01’ 39”
in
Cetus
C/2023 E1 (ATLAS)
Magnitude : 11.7 (Observed - COBS)
trending_up
Coma Diameter : 4.2'
Tail Length : n/a
Observation Date : 2023-06-02
RA : 12h 28m 47s
Decl : +70° 50’ 47”
in
Draco
C/2022 A2 (PANSTARRS)
Magnitude : 12.1 (Observed - COBS)
trending_down
Coma Diameter : 1.3'
Tail Length : n/a
Observation Date : 2023-05-31
RA : 00h 57m 12s
Decl : +36° 17’ 49”
in
Andromeda
C/2019 U5 (PANSTARRS)
Magnitude : 12.2 (Observed - COBS)
trending_down
Coma Diameter : n/a
Tail Length : n/a
Observation Date : 2023-05-27
RA : 10h 25m 01s
Decl : -05° 15’ 07”
in
Sextans
C/2020 K1 (PANSTARRS)
Magnitude : 12.3 (Observed - COBS)
trending_flat
Coma Diameter : 1.0'
Tail Length : n/a
Observation Date : 2023-05-27
RA : 21h 09m 54s
Decl : -75° 33’ 18”
in
Octans
237P/LINEAR
Magnitude : 12.5 (Observed - COBS)
trending_flat
Coma Diameter : 0.9'
Tail Length : n/a
Observation Date : 2023-05-31
RA : 20h 00m 48s
Decl : -06° 37’ 52”
in
Aquila
C/2019 T4 (ATLAS)
Magnitude : 14.0 (Observed - COBS)
trending_down
Coma Diameter : 2.2'
Tail Length : n/a
Observation Date : 2023-06-02
RA : 15h 18m 37s
Decl : +21° 29’ 18”
in
Serpens
C/2022 W3 (Leonard)
Magnitude : 14.7 (Observed - COBS)
trending_up
Coma Diameter : 1.8'
Tail Length : 1.3'
Observation Date : 2023-05-28
RA : 01h 45m 28s
Decl : +63° 48’ 51”
in
Cassiopeia
C/2022 L2 (ATLAS)
Magnitude : 15.8 (Observed - COBS)
trending_up
Coma Diameter : 1.1'
Tail Length : n/a
Observation Date : 2023-06-02
RA : 17h 11m 28s
Decl : +22° 54’ 38”
in
Hercules
C/2020 R7 (ATLAS)
Magnitude : 16.0 (Observed - COBS)
trending_down
Coma Diameter : 0.6'
Tail Length : n/a
Observation Date : 2023-05-29
RA : 16h 32m 54s
Decl : +32° 10’ 33”
in
Hercules
C/2023 A3 (Tsuchinshan-ATLAS)
Magnitude : 17.1 (Observed - COBS)
trending_up
Coma Diameter : n/a
Tail Length : n/a
Observation Date : 2023-05-28
RA : 14h 25m 25s
Decl : +03° 17’ 49”
in
Virgo
12P/Pons-Brooks
Magnitude : 17.3 (Observed - COBS)
trending_up
Coma Diameter : 0.4'
Tail Length : n/a
Observation Date : 2023-05-28
RA : 19h 20m 52s
Decl : +50° 26’ 59”
in
Cygnus
C/2020 V2 (ZTF)
Magnitude : 12.1 (Predicted - JPL)
trending_up
RA : 02h 58m 14s
Decl : +20° 09’ 16”
in
Aries
C/2017 K2 (PANSTARRS)
Magnitude : 13.8 (Predicted - JPL)
trending_down
RA : 05h 31m 37s
Decl : -15° 28’ 27”
in
Lepus
C/2021 S3 (PANSTARRS)
Magnitude : 13.8 (Predicted - JPL)
trending_up
RA : 06h 24m 26s
Decl : -23° 49’ 38”
in
Canis Majoris
81P/Wild
Magnitude : 14.4 (Predicted - JPL)
trending_down
RA : 17h 25m 04s
Decl : -18° 15’ 42”
in
Ophiucus
126P/IRAS
Magnitude : 14.4 (Predicted - JPL)
trending_up
RA : 01h 14m 07s
Decl : -05° 31’ 30”
in
Cetus
C/2022 E3 (ZTF)
Magnitude : 14.6 (Predicted - JPL)
trending_down
RA : 05h 44m 32s
Decl : -16° 24’ 06”
in
Lepus
185P/Petriew
Magnitude : 14.6 (Predicted - JPL)
trending_up
RA : 01h 44m 15s
Decl : +18° 17’ 44”
in
Pisces
364P/PANSTARRS
Magnitude : 15.3 (Predicted - JPL)
trending_down
RA : 01h 26m 04s
Decl : -06° 27’ 09”
in
Cetus
